Since version 1.2.140 it is possible to let the old h2 classes (v 1.2.128) connect to the database. The automatic upgrade .jar file must be present, and the url must contain NO_UPGRADE=TRUE.
@advanced_1348_h2
Limits and Limitations
Limits and Limitations
@advanced_1348_p
@advanced_1349_p
This database has the following known limitations:
This database has the following known limitations:
@advanced_1349_li
Database file size limits (excluding BLOB and CLOB data): With the default storage mechanism, the maximum file size is currently 256 GB for the data, and 256 GB for the index. With the page store (experimental): 4 TB or higher.
@advanced_1350_li
@advanced_1350_li
BLOB and CLOB size limit: every CLOB or BLOB can be up to 256 GB.
Database file size limits (excluding BLOB and CLOB data): With the default storage mechanism, the maximum file size is currently 256 GB for the data, and 256 GB for the index. With the page store (experimental): 4 TB or higher.
@advanced_1351_li
@advanced_1351_li
The maximum file size for FAT or FAT32 file systems is 4 GB. That means when using FAT or FAT32, the limit is 4 GB for the data. This is the limitation of the file system. The database does provide a workaround for this problem, it is to use the file name prefix <code>split:</code>. In that case files are split into files of 1 GB by default. An example database URL is: <code>jdbc:h2:split:~/test</code>.
BLOB and CLOB size limit: every CLOB or BLOB can be up to 256 GB.
@advanced_1352_li
@advanced_1352_li
The maximum number of rows per table is 2'147'483'648.
The maximum file size for FAT or FAT32 file systems is 4 GB. That means when using FAT or FAT32, the limit is 4 GB for the data. This is the limitation of the file system. The database does provide a workaround for this problem, it is to use the file name prefix <code>split:</code>. In that case files are split into files of 1 GB by default. An example database URL is: <code>jdbc:h2:split:~/test</code>.
@advanced_1353_li
@advanced_1353_li
Main memory requirements: The larger the database, the more main memory is required. With the default storage mechanism, the minimum main memory required for a 12 GB database is around 240 MB. With the page store (experimental), the minimum main memory required is much lower, around 1 MB for each 8 GB database file size.
The maximum number of rows per table is 2'147'483'648.
@advanced_1354_li
@advanced_1354_li
Limit on the complexity of SQL statements. Statements of the following form will result in a stack overflow exception:
Main memory requirements: The larger the database, the more main memory is required. With the version 1.1 storage mechanism, the minimum main memory required for a 12 GB database was around 240 MB. With the current page store, the minimum main memory required is much lower, around 1 MB for each 8 GB database file size.
@advanced_1355_li
@advanced_1355_li
There is no limit for the following entities, except the memory and storage capacity: maximum identifier length (table name, column name, and so on); maximum number of tables, columns, indexes, triggers, and other database objects; maximum statement length, number of parameters per statement, tables per statement, expressions in order by, group by, having, and so on; maximum rows per query; maximum columns per table, columns per index, indexes per table, lob columns per table, and so on; maximum row length, index row length, select row length; maximum length of a varchar column, decimal column, literal in a statement.
Limit on the complexity of SQL statements. Statements of the following form will result in a stack overflow exception:
@advanced_1356_li
@advanced_1356_li
There is no limit for the following entities, except the memory and storage capacity: maximum identifier length (table name, column name, and so on); maximum number of tables, columns, indexes, triggers, and other database objects; maximum statement length, number of parameters per statement, tables per statement, expressions in order by, group by, having, and so on; maximum rows per query; maximum columns per table, columns per index, indexes per table, lob columns per table, and so on; maximum row length, index row length, select row length; maximum length of a varchar column, decimal column, literal in a statement.
@advanced_1357_li
For limitations on data types, see the documentation of the respective Java data type or the data type documentation of this database.
For limitations on data types, see the documentation of the respective Java data type or the data type documentation of this database.
@advanced_1357_h2
@advanced_1358_h2
Glossary and Links
Glossary and Links
@advanced_1358_th
@advanced_1359_th
Term
Term
@advanced_1359_th
@advanced_1360_th
Description
Description
@advanced_1360_td
@advanced_1361_td
AES-128
AES-128
@advanced_1361_td
@advanced_1362_td
A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/Advanced_Encryption_Standard">Wikipedia: AES</a>
A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/Advanced_Encryption_Standard">Wikipedia: AES</a>
@advanced_1362_td
@advanced_1363_td
Birthday Paradox
Birthday Paradox
@advanced_1363_td
@advanced_1364_td
Describes the higher than expected probability that two persons in a room have the same birthday. Also valid for randomly generated UUIDs. See also: <a href="http://en.wikipedia.org/wiki/Birthday_paradox">Wikipedia: Birthday Paradox</a>
Describes the higher than expected probability that two persons in a room have the same birthday. Also valid for randomly generated UUIDs. See also: <a href="http://en.wikipedia.org/wiki/Birthday_paradox">Wikipedia: Birthday Paradox</a>
@advanced_1364_td
@advanced_1365_td
Digest
Digest
@advanced_1365_td
@advanced_1366_td
Protocol to protect a password (but not to protect data). See also: <a href="http://www.faqs.org/rfcs/rfc2617.html">RFC 2617: HTTP Digest Access Authentication</a>
Protocol to protect a password (but not to protect data). See also: <a href="http://www.faqs.org/rfcs/rfc2617.html">RFC 2617: HTTP Digest Access Authentication</a>
@advanced_1366_td
@advanced_1367_td
GCJ
GCJ
@advanced_1367_td
@advanced_1368_td
Compiler for Java. <a href="http://gcc.gnu.org/java">GNU Compiler for the Java</a> and <a href="http://www.dobysoft.com/products/nativej">NativeJ (commercial)</a>
Compiler for Java. <a href="http://gcc.gnu.org/java">GNU Compiler for the Java</a> and <a href="http://www.dobysoft.com/products/nativej">NativeJ (commercial)</a>
@advanced_1368_td
@advanced_1369_td
HTTPS
HTTPS
@advanced_1369_td
@advanced_1370_td
A protocol to provide security to HTTP connections. See also: <a href="http://www.ietf.org/rfc/rfc2818.txt">RFC 2818: HTTP Over TLS</a>
A protocol to provide security to HTTP connections. See also: <a href="http://www.ietf.org/rfc/rfc2818.txt">RFC 2818: HTTP Over TLS</a>
@advanced_1370_td
@advanced_1371_td
Modes of Operation
Modes of Operation
@advanced_1371_a
@advanced_1372_a
Wikipedia: Block cipher modes of operation
Wikipedia: Block cipher modes of operation
@advanced_1372_td
@advanced_1373_td
Salt
Salt
@advanced_1373_td
@advanced_1374_td
Random number to increase the security of passwords. See also: <a href="http://en.wikipedia.org/wiki/Key_derivation_function">Wikipedia: Key derivation function</a>
Random number to increase the security of passwords. See also: <a href="http://en.wikipedia.org/wiki/Key_derivation_function">Wikipedia: Key derivation function</a>
@advanced_1374_td
@advanced_1375_td
SHA-256
SHA-256
@advanced_1375_td
@advanced_1376_td
A cryptographic one-way hash function. See also: <a href="http://en.wikipedia.org/wiki/SHA_family">Wikipedia: SHA hash functions</a>
A cryptographic one-way hash function. See also: <a href="http://en.wikipedia.org/wiki/SHA_family">Wikipedia: SHA hash functions</a>
@advanced_1376_td
@advanced_1377_td
SQL Injection
SQL Injection
@advanced_1377_td
@advanced_1378_td
A security vulnerability where an application embeds SQL statements or expressions in user input. See also: <a href="http://en.wikipedia.org/wiki/SQL_injection">Wikipedia: SQL Injection</a>
A security vulnerability where an application embeds SQL statements or expressions in user input. See also: <a href="http://en.wikipedia.org/wiki/SQL_injection">Wikipedia: SQL Injection</a>
@advanced_1378_td
@advanced_1379_td
Watermark Attack
Watermark Attack
@advanced_1379_td
@advanced_1380_td
Security problem of certain encryption programs where the existence of certain data can be proven without decrypting. For more information, search in the internet for 'watermark attack cryptoloop'
Security problem of certain encryption programs where the existence of certain data can be proven without decrypting. For more information, search in the internet for 'watermark attack cryptoloop'
@advanced_1380_td
@advanced_1381_td
SSL/TLS
SSL/TLS
@advanced_1381_td
@advanced_1382_td
Secure Sockets Layer / Transport Layer Security. See also: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a>
Secure Sockets Layer / Transport Layer Security. See also: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a>
@advanced_1382_td
@advanced_1383_td
XTEA
XTEA
@advanced_1383_td
@advanced_1384_td
A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/XTEA">Wikipedia: XTEA</a>
A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/XTEA">Wikipedia: XTEA</a>
@build_1000_h1
@build_1000_h1
...
@@ -1243,199 +1246,202 @@ Building the Software
...
@@ -1243,199 +1246,202 @@ Building the Software
@build_1030_p
@build_1030_p
You will get a list of targets. If you want to build the <code>jar</code> file, execute (Windows):
You will get a list of targets. If you want to build the <code>jar</code> file, execute (Windows):
@build_1031_h3
@build_1031_p
To run the build tool in shell mode, use the command line option <code>-</code> as in <code>./build.sh -</code>.
@build_1032_h3
Switching the Source Code
Switching the Source Code
@build_1032_p
@build_1033_p
By default the source code uses Java 1.5 features, however Java 1.6 is supported as well. To switch the source code to the installed version of Java, run:
By default the source code uses Java 1.6 features, however Java 1.5 is supported as well. To switch the source code to the installed version of Java, run:
@build_1033_h2
@build_1034_h2
Build Targets
Build Targets
@build_1034_p
@build_1035_p
The build system can generate smaller jar files as well. The following targets are currently supported:
The build system can generate smaller jar files as well. The following targets are currently supported:
@build_1035_code
@build_1036_code
jarClient
jarClient
@build_1036_li
@build_1037_li
creates the file <code>h2client.jar</code>. This only contains the JDBC client.
creates the file <code>h2client.jar</code>. This only contains the JDBC client.
@build_1037_code
@build_1038_code
jarSmall
jarSmall
@build_1038_li
@build_1039_li
creates the file <code>h2small.jar</code>. This only contains the embedded database. Debug information is disabled.
creates the file <code>h2small.jar</code>. This only contains the embedded database. Debug information is disabled.
@build_1039_code
@build_1040_code
jarJaqu
jarJaqu
@build_1040_li
@build_1041_li
creates the file <code>h2jaqu.jar</code>. This only contains the JaQu (Java Query) implementation. All other jar files do not include JaQu.
creates the file <code>h2jaqu.jar</code>. This only contains the JaQu (Java Query) implementation. All other jar files do not include JaQu.
@build_1041_code
@build_1042_code
javadocImpl
javadocImpl
@build_1042_li
@build_1043_li
creates the Javadocs of the implementation.
creates the Javadocs of the implementation.
@build_1043_p
@build_1044_p
To create the file <code>h2client.jar</code>, go to the directory <code>h2</code> and execute the following command:
To create the file <code>h2client.jar</code>, go to the directory <code>h2</code> and execute the following command:
@build_1044_h2
@build_1045_h2
Using Maven 2
Using Maven 2
@build_1045_h3
@build_1046_h3
Using a Central Repository
Using a Central Repository
@build_1046_p
@build_1047_p
You can include the database in your Maven 2 project as a dependency. Example:
You can include the database in your Maven 2 project as a dependency. Example:
@build_1047_p
@build_1048_p
New versions of this database are first uploaded to http://hsql.sourceforge.net/m2-repo/ and then automatically synchronized with the main Maven repository; however after a new release it may take a few hours before they are available there.
New versions of this database are first uploaded to http://hsql.sourceforge.net/m2-repo/ and then automatically synchronized with the main Maven repository; however after a new release it may take a few hours before they are available there.
@build_1048_h3
@build_1049_h3
Using Snapshot Version
Using Snapshot Version
@build_1049_p
@build_1050_p
To build a <code>h2-*-SNAPSHOT.jar</code> file and upload it the to the local Maven 2 repository, execute the following command:
To build a <code>h2-*-SNAPSHOT.jar</code> file and upload it the to the local Maven 2 repository, execute the following command:
@build_1050_p
@build_1051_p
Afterwards, you can include the database in your Maven 2 project as a dependency:
Afterwards, you can include the database in your Maven 2 project as a dependency:
@build_1051_h2
@build_1052_h2
Translating
Translating
@build_1052_p
@build_1053_p
The translation of this software is split into the following parts:
The translation of this software is split into the following parts:
To translate the H2 Console, start it and select Preferences / Translate. After you are done, send the translated <code>*.prop</code> file to the Google Group. The web site is currently translated using Google.
To translate the H2 Console, start it and select Preferences / Translate. After you are done, send the translated <code>*.prop</code> file to the Google Group. The web site is currently translated using Google.
@build_1056_h2
@build_1057_h2
Providing Patches
Providing Patches
@build_1057_p
@build_1058_p
If you like to provide patches, please consider the following guidelines to simplify merging them:
If you like to provide patches, please consider the following guidelines to simplify merging them:
@build_1058_li
@build_1059_li
Only use Java 1.5 features (do not use Java 1.6) (see <a href="#environment">Environment</a>).
Only use Java 1.5 features (do not use Java 1.6) (see <a href="#environment">Environment</a>).
@build_1059_li
@build_1060_li
Follow the coding style used in the project, and use Checkstyle (see above) to verify. For example, do not use tabs (use spaces instead). The checkstyle configuration is in <code>src/installer/checkstyle.xml</code>.
Follow the coding style used in the project, and use Checkstyle (see above) to verify. For example, do not use tabs (use spaces instead). The checkstyle configuration is in <code>src/installer/checkstyle.xml</code>.
@build_1060_li
@build_1061_li
A template of the Eclipse settings are in <code>src/installer/eclipse.settings/*</code>. If you want to use them, you need to copy them to the <code>.settings</code> directory. The formatting options (<code>eclipseCodeStyle</code>) are also included.
A template of the Eclipse settings are in <code>src/installer/eclipse.settings/*</code>. If you want to use them, you need to copy them to the <code>.settings</code> directory. The formatting options (<code>eclipseCodeStyle</code>) are also included.
@build_1061_li
@build_1062_li
Please provide test cases and integrate them into the test suite. For Java level tests, see <code>src/test/org/h2/test/TestAll.java</code>. For SQL level tests, see <code>src/test/org/h2/test/test.in.txt</code> or <code>testSimple.in.txt</code>.
Please provide test cases and integrate them into the test suite. For Java level tests, see <code>src/test/org/h2/test/TestAll.java</code>. For SQL level tests, see <code>src/test/org/h2/test/test.in.txt</code> or <code>testSimple.in.txt</code>.
@build_1062_li
@build_1063_li
The test cases should cover at least 90% of the changed and new code; use a code coverage tool to verify that (see above). or use the build target <code>coverage</code>.
The test cases should cover at least 90% of the changed and new code; use a code coverage tool to verify that (see above). or use the build target <code>coverage</code>.
@build_1063_li
@build_1064_li
Verify that you did not break other features: run the test cases by executing <code>build test</code>.
Verify that you did not break other features: run the test cases by executing <code>build test</code>.
@build_1064_li
@build_1065_li
Provide end user documentation if required (<code>src/docsrc/html/*</code>).
Provide end user documentation if required (<code>src/docsrc/html/*</code>).
@build_1065_li
@build_1066_li
Document grammar changes in <code>src/docsrc/help/help.csv</code>
Document grammar changes in <code>src/docsrc/help/help.csv</code>
@build_1066_li
@build_1067_li
Provide a change log entry (<code>src/docsrc/html/changelog.html</code>).
Provide a change log entry (<code>src/docsrc/html/changelog.html</code>).
@build_1067_li
@build_1068_li
Verify the spelling using <code>build spellcheck</code>. If required add the new words to <code>src/tools/org/h2/build/doc/dictionary.txt</code>.
Verify the spelling using <code>build spellcheck</code>. If required add the new words to <code>src/tools/org/h2/build/doc/dictionary.txt</code>.
@build_1068_li
@build_1069_li
Run <code>src/installer/buildRelease</code> to find and fix formatting errors.
Run <code>src/installer/buildRelease</code> to find and fix formatting errors.
@build_1069_li
@build_1070_li
Verify the formatting using <code>build docs</code> and <code>build javadoc</code>.
Verify the formatting using <code>build docs</code> and <code>build javadoc</code>.
@build_1070_li
@build_1071_li
Submit patches as <code>.patch</code> files (compressed if big). To create a patch using Eclipse, use Team / Create Patch.
Submit patches as <code>.patch</code> files (compressed if big). To create a patch using Eclipse, use Team / Create Patch.
@build_1071_p
@build_1072_p
For legal reasons, patches need to be public in the form of an email to the <a href="http://groups.google.com/group/h2-database">group</a>, or in the form of an <a href="http://code.google.com/p/h2database/issues/list">issue report or attachment</a>. Significant contributions need to include the following statement:
For legal reasons, patches need to be public in the form of an email to the <a href="http://groups.google.com/group/h2-database">group</a>, or in the form of an <a href="http://code.google.com/p/h2database/issues/list">issue report or attachment</a>. Significant contributions need to include the following statement:
@build_1072_p
@build_1073_p
"I wrote the code, it's mine, and I'm contributing it to H2 for distribution multiple-licensed under the H2 License, version 1.0, and under the Eclipse Public License, version 1.0 (http://h2database.com/html/license.html)."
"I wrote the code, it's mine, and I'm contributing it to H2 for distribution multiple-licensed under the H2 License, version 1.0, and under the Eclipse Public License, version 1.0 (http://h2database.com/html/license.html)."
@build_1073_h2
@build_1074_h2
Reporting Problems or Requests
Reporting Problems or Requests
@build_1074_p
@build_1075_p
Please consider the following checklist if you have a question, want to report a problem, or if you have a feature request:
Please consider the following checklist if you have a question, want to report a problem, or if you have a feature request:
@build_1075_li
@build_1076_li
Feature requests are always welcome, even if the feature is already on the <a href="roadmap.html">roadmap</a>. Your mail will help prioritize feature requests. If you urgently need a feature, consider <a href="#providing_patches">providing a patch</a>.
Feature requests are always welcome, even if the feature is already on the <a href="roadmap.html">roadmap</a>. Your mail will help prioritize feature requests. If you urgently need a feature, consider <a href="#providing_patches">providing a patch</a>.
@build_1076_li
@build_1077_li
Before posting problems, check the <a href="faq.html">FAQ</a> and do a <a href="http://google.com">Google search</a>.
Before posting problems, check the <a href="faq.html">FAQ</a> and do a <a href="http://google.com">Google search</a>.
@build_1077_li
@build_1078_li
When got an unexpected exception, please try the <a href="sourceError.html">Error Analyzer tool</a>. If this doesn't help, please report the problem, including the complete error message and stack trace, and the root cause stack trace(s).
When got an unexpected exception, please try the <a href="sourceError.html">Error Analyzer tool</a>. If this doesn't help, please report the problem, including the complete error message and stack trace, and the root cause stack trace(s).
@build_1078_li
@build_1079_li
When sending source code, please use a public web clipboard such as <a href="http://pastebin.com">Pastebin</a>, <a href="http://cl1p.net">Cl1p</a>, or <a href="http://www.mysticpaste.com/new">Mystic Paste</a> to avoid formatting problems. Please keep test cases as simple and short as possible, but so that the problem can still be reproduced. As a template, use: <a href="http://h2database.googlecode.com/svn/trunk/h2/src/test/org/h2/samples/HelloWorld.java">HelloWorld.java</a>. Method that simply call other methods should be avoided, as well as unnecessary exception handling. Please use the JDBC API and no external tools or libraries. The test should include all required initialization code, and should be started with the main method.
When sending source code, please use a public web clipboard such as <a href="http://pastebin.com">Pastebin</a>, <a href="http://cl1p.net">Cl1p</a>, or <a href="http://www.mysticpaste.com/new">Mystic Paste</a> to avoid formatting problems. Please keep test cases as simple and short as possible, but so that the problem can still be reproduced. As a template, use: <a href="http://h2database.googlecode.com/svn/trunk/h2/src/test/org/h2/samples/HelloWorld.java">HelloWorld.java</a>. Method that simply call other methods should be avoided, as well as unnecessary exception handling. Please use the JDBC API and no external tools or libraries. The test should include all required initialization code, and should be started with the main method.
@build_1079_li
@build_1080_li
For large attachments, use a public temporary storage such as <a href="http://rapidshare.com">Rapidshare</a>.
For large attachments, use a public temporary storage such as <a href="http://rapidshare.com">Rapidshare</a>.
@build_1080_li
@build_1081_li
Google Group versus issue tracking: Use the <a href="http://groups.google.com/group/h2-database">Google Group</a> for questions or if you are not sure it's a bug. If you are sure it's a bug, you can create an <a href="http://code.google.com/p/h2database/issues/list">issue</a>, but you don't need to (sending an email to the group is enough). Please note that only few people monitor the issue tracking system.
Google Group versus issue tracking: Use the <a href="http://groups.google.com/group/h2-database">Google Group</a> for questions or if you are not sure it's a bug. If you are sure it's a bug, you can create an <a href="http://code.google.com/p/h2database/issues/list">issue</a>, but you don't need to (sending an email to the group is enough). Please note that only few people monitor the issue tracking system.
@build_1081_li
@build_1082_li
For out-of-memory problems, please analyze the problem yourself first, for example using the command line option <code>-XX:+HeapDumpOnOutOfMemoryError</code> and a memory analysis tool such as the <a href="http://www.eclipse.org/mat">Eclipse Memory Analyzer (MAT)</a>.
For out-of-memory problems, please analyze the problem yourself first, for example using the command line option <code>-XX:+HeapDumpOnOutOfMemoryError</code> and a memory analysis tool such as the <a href="http://www.eclipse.org/mat">Eclipse Memory Analyzer (MAT)</a>.
@build_1082_li
@build_1083_li
It may take a few days to get an answers. Please do not double post.
It may take a few days to get an answers. Please do not double post.
@build_1083_h2
@build_1084_h2
Automated Build
Automated Build
@build_1084_p
@build_1085_p
This build process is automated and runs regularly. The build process includes running the tests and code coverage, using the command line <code>./build.sh clean jar coverage -Dh2.ftpPassword=... uploadBuild</code>. The last results are available here:
This build process is automated and runs regularly. The build process includes running the tests and code coverage, using the command line <code>./build.sh clean jar coverage -Dh2.ftpPassword=... uploadBuild</code>. The last results are available here:
@build_1085_a
@build_1086_a
Test Output
Test Output
@build_1086_a
@build_1087_a
Code Coverage Summary
Code Coverage Summary
@build_1087_a
@build_1088_a
Code Coverage Details (download, 1.3 MB)
Code Coverage Details (download, 1.3 MB)
@build_1088_a
@build_1089_a
Build Newsfeed
Build Newsfeed
@build_1089_a
@build_1090_a
Latest Jar File (download, 1 MB)
Latest Jar File (download, 1 MB)
@build_1090_h2
@build_1091_h2
Generating Railroad Diagrams
Generating Railroad Diagrams
@build_1091_p
@build_1092_p
The railroad diagrams are HTML, formatted as nested tables. The diagrams are generated as follows:
The railroad diagrams are HTML, formatted as nested tables. The diagrams are generated as follows:
@build_1092_li
@build_1093_li
The BNF parser (<code>org.h2.bnf.Bnf</code>) reads and parses the BNF from the file <code>help.csv</code>.
The BNF parser (<code>org.h2.bnf.Bnf</code>) reads and parses the BNF from the file <code>help.csv</code>.
@build_1093_li
@build_1094_li
The page parser (<code>org.h2.server.web.PageParser</code>) reads the template HTML file and fills in the diagrams.
The page parser (<code>org.h2.server.web.PageParser</code>) reads the template HTML file and fills in the diagrams.
@build_1094_li
@build_1095_li
The rail images (one straight, four junctions, two turns) are generated using a simple Java application.
The rail images (one straight, four junctions, two turns) are generated using a simple Java application.
@build_1095_p
@build_1096_p
To generate railroad diagrams for other grammars, see the package <code>org.h2.jcr</code>. This package is used to generate the SQL-2 railroad diagrams for the JCR 2.0 specification.
To generate railroad diagrams for other grammars, see the package <code>org.h2.jcr</code>. This package is used to generate the SQL-2 railroad diagrams for the JCR 2.0 specification.
@changelog_1000_h1
@changelog_1000_h1
...
@@ -1445,1143 +1451,1167 @@ Change Log
...
@@ -1445,1143 +1451,1167 @@ Change Log
Next Version (unreleased)
Next Version (unreleased)
@changelog_1002_li
@changelog_1002_li
-
The build tool now supports (minimalistic) shell mode, started using ./build.sh -
@changelog_1003_h2
@changelog_1003_li
Version 1.2.139 (2010-07-10)
IS NULL comparison with nested queries and linked tables did not work. Example: select * from (select x from test) where x is null.
@changelog_1004_li
@changelog_1004_li
There was a bug in the internal IntIntHashMap. There were now known side effects however.
Support for null-safe equals. This includes the ANSI SQL standard syntax A IS [NOT] DISTINCT FROM B as well as the shorter A IS [NOT] B.
@changelog_1005_li
@changelog_1005_li
ANALYZE now uses less memory.
Primary key violations threw a strange exception message when using a single column INT or BIGINT key.
@changelog_1006_li
@changelog_1006_li
Memory mapped file system: improved error messages if there is a problem.
EXPLAIN ANALYZE now also lists the number of pages read from the file.
@changelog_1007_li
@changelog_1007_li
The Lucene fulltext search did not work well when using special file systems such as split or nioMapped.
Memory mapped files: There was a bug in version 1.2.139 so that memory mapped files could only be used together with split, for example: split:nioMapped: - the problem is now solved. It is still a good idea to use split:nioMapped: to work around the 2 GB limitation of memory mapped files.
@changelog_1008_li
@changelog_1008_li
The memory mapped file system (nioMapped: file prefix) couldn't seek past the file length.
Memory mapped files: the system property h2.nioCleanerHack is now disabled by default because it was not always working as expected. Now System.gc() is used in a loop until the buffer is garbage collected. This of course is also not a nice solution, but the only one known to work. See also http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4724038
@changelog_1009_li
@changelog_1009_li
Some file system operations did not work with stacked file systems (for example split and nioMapped). This also affected the DeleteDbFiles tool.
If an old 1.1 database file version is found on connect, it is now possible to let the old h2 classes (v 1.2.128) connect to the database. The automatic upgrade .jar file must be present, and the url must contain NO_UPGRADE=TRUE
@changelog_1010_li
@changelog_1010_li
The automatic upgrade temporary script file is now encrypted.
@changelog_1011_h2
Version 1.2.139 (2010-07-10)
@changelog_1012_li
There was a bug in the internal IntIntHashMap. There were now known side effects however.
@changelog_1013_li
ANALYZE now uses less memory.
@changelog_1014_li
Memory mapped file system: improved error messages if there is a problem.
@changelog_1015_li
The Lucene fulltext search did not work well when using special file systems such as split or nioMapped.
@changelog_1016_li
The memory mapped file system (nioMapped: file prefix) couldn't seek past the file length.
@changelog_1017_li
Some file system operations did not work with stacked file systems (for example split and nioMapped). This also affected the DeleteDbFiles tool.
@changelog_1018_li
New experimental query cache. The cache is only used if the SQL statement and all parameters match. Each session has it's own cache with the given size. Only the last returned result per query is cached. Only SELECT statements are cached (excluding UNION and FOR UPDATE statements). This works for both statements and prepared statement. To enable, set the system property h2.commandCacheSize to a value larger than 0. There is currently no plan to enable this option by default in future versions.
New experimental query cache. The cache is only used if the SQL statement and all parameters match. Each session has it's own cache with the given size. Only the last returned result per query is cached. Only SELECT statements are cached (excluding UNION and FOR UPDATE statements). This works for both statements and prepared statement. To enable, set the system property h2.commandCacheSize to a value larger than 0. There is currently no plan to enable this option by default in future versions.
@changelog_1011_li
@changelog_1019_li
Conditions with many OR operations could throw an UnsupportedOperationException if h2.optimizeOr was enabled.
Conditions with many OR operations could throw an UnsupportedOperationException if h2.optimizeOr was enabled.
@changelog_1012_li
@changelog_1020_li
XA connection: after transaction commit or rollback, the physical connection is set into autocommit mode.
XA connection: after transaction commit or rollback, the physical connection is set into autocommit mode.
@changelog_1013_li
@changelog_1021_li
MULTI_THREADED did not work correctly and could throw the exception "try to add a record twice" for larger databases because cache access was not correctly synchronized.
MULTI_THREADED did not work correctly and could throw the exception "try to add a record twice" for larger databases because cache access was not correctly synchronized.
@changelog_1014_li
@changelog_1022_li
Automatic database upgrade from non page store is now possible. If the classes from the h2mig_pagestore_addon.jar file are in the classpath, the database will be converted to the current page store format automatically. The file can be found here: <a href="http://h2database.com/h2mig_pagestore_addon.jar">http://h2database.com/h2mig_pagestore_addon.jar</a>
Automatic database upgrade from non page store is now possible. If the classes from the h2mig_pagestore_addon.jar file are in the classpath, the database will be converted to the current page store format automatically. The file can be found here: <a href="http://h2database.com/h2mig_pagestore_addon.jar">http://h2database.com/h2mig_pagestore_addon.jar</a>
@changelog_1015_li
@changelog_1023_li
The MultiDimension tools was extended with a few helper methods. The API was unified a bit.
The MultiDimension tools was extended with a few helper methods. The API was unified a bit.
@changelog_1016_li
@changelog_1024_li
ODBC: MS Access could not link to a table with unique index or primary key. To solve this problem, index meta data is currently disabled for ODBC. When using the new H2 version to access a database over ODBC, the PostgreSQL catalog is automatically upgraded. Using a database with an upgraded PostgreSQL catalog with an older version of H2 is still possible, but not over ODBC.
ODBC: MS Access could not link to a table with unique index or primary key. To solve this problem, index meta data is currently disabled for ODBC. When using the new H2 version to access a database over ODBC, the PostgreSQL catalog is automatically upgraded. Using a database with an upgraded PostgreSQL catalog with an older version of H2 is still possible, but not over ODBC.
@changelog_1017_li
@changelog_1025_li
ODBC: MS Access could not link to a table with a name containing '_'.
ODBC: MS Access could not link to a table with a name containing '_'.
@changelog_1018_li
@changelog_1026_li
ODBC: additional connection settings can now be added to the database name. Example: ~/test;cipher=xtea. Therefore, encrypted databases are supported.
ODBC: additional connection settings can now be added to the database name. Example: ~/test;cipher=xtea. Therefore, encrypted databases are supported.
@changelog_1019_li
@changelog_1027_li
Local temporary tables can now be created without having to commit a transaction using CREATE LOCAL TEMPORARY TABLE TEMP(ID INT PRIMARY KEY) TRANSACTIONAL.
Local temporary tables can now be created without having to commit a transaction using CREATE LOCAL TEMPORARY TABLE TEMP(ID INT PRIMARY KEY) TRANSACTIONAL.
@changelog_1020_li
@changelog_1028_li
New system property h2.dropRestrict (default false) to change the default action for DROP TABLE and DROP VIEW (false for CASCADE, true for RESTRICT). The plan is to enable this property by default in version 1.3.x.
New system property h2.dropRestrict (default false) to change the default action for DROP TABLE and DROP VIEW (false for CASCADE, true for RESTRICT). The plan is to enable this property by default in version 1.3.x.
@changelog_1021_li
@changelog_1029_li
DROP TABLE now also supports CASCADE (still the default) and RESTRICT.
DROP TABLE now also supports CASCADE (still the default) and RESTRICT.
@changelog_1022_li
@changelog_1030_li
The wrong exception was thrown when trying to connect to a server if the server was not running.
The wrong exception was thrown when trying to connect to a server if the server was not running.
@changelog_1023_li
@changelog_1031_li
UNION queries where the first query contains a nested query were parsed incorrectly. Example: "select 1 from (select 2 from dual) union select 3 from dual" was parsed as "select 1 from ((select 2 from dual) union select 3 from dual)". Fixed.
UNION queries where the first query contains a nested query were parsed incorrectly. Example: "select 1 from (select 2 from dual) union select 3 from dual" was parsed as "select 1 from ((select 2 from dual) union select 3 from dual)". Fixed.
@changelog_1024_li
@changelog_1032_li
Support ALTER SCHEMA name RENAME TO newName (rename schema). (patch from Kerry Sainsbury)
Support ALTER SCHEMA name RENAME TO newName (rename schema). (patch from Kerry Sainsbury)
@changelog_1025_h2
@changelog_1033_h2
Version 1.2.138 (2010-06-27)
Version 1.2.138 (2010-06-27)
@changelog_1026_li
@changelog_1034_li
Referential integrity: it was not allowed to delete a row with NULL in the parent table, if there was a row with NULL in the child table.
Referential integrity: it was not allowed to delete a row with NULL in the parent table, if there was a row with NULL in the child table.
@changelog_1027_li
@changelog_1035_li
Experimental feature to support case sensitive catalog names and database names using the DATABASE() method. To use this feature, set the system property h2.databaseToUpper to false. The plan is to set the property to false by default in version 1.3.x. Issue 204 - thanks to Sylvain Cuaz (ILM Informatique) for the patch.
Experimental feature to support case sensitive catalog names and database names using the DATABASE() method. To use this feature, set the system property h2.databaseToUpper to false. The plan is to set the property to false by default in version 1.3.x. Issue 204 - thanks to Sylvain Cuaz (ILM Informatique) for the patch.
@changelog_1028_li
@changelog_1036_li
Experimental feature to support nested joins. To enable, set the system property h2.nestedJoins to true. If enabled, nested joins and right outer joins should work as expected (issues 145, 177, and 203). The plan is to enable this feature by default in version 1.3.x.
Experimental feature to support nested joins. To enable, set the system property h2.nestedJoins to true. If enabled, nested joins and right outer joins should work as expected (issues 145, 177, and 203). The plan is to enable this feature by default in version 1.3.x.
@changelog_1029_li
@changelog_1037_li
New sample application: CachedPreparedStatements.
New sample application: CachedPreparedStatements.
@changelog_1030_li
@changelog_1038_li
When creating functions within a schema, those functions could not be used in views, nested queries, and constraints. Fixed.
When creating functions within a schema, those functions could not be used in views, nested queries, and constraints. Fixed.
@changelog_1031_li
@changelog_1039_li
The benchmarks have been run using recent database versions.
The benchmarks have been run using recent database versions.
@changelog_1032_li
@changelog_1040_li
Version 1.2.137 could still not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision).
Version 1.2.137 could still not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision).
@changelog_1033_li
@changelog_1041_li
Cluster: non-admin users could not connect when one of the cluster node was stopped. Issue 206.
Cluster: non-admin users could not connect when one of the cluster node was stopped. Issue 206.
@changelog_1034_li
@changelog_1042_li
DROP VIEW now supports the CASCADE and RESTRICT clauses (patch from Kerry Sainsbury)
DROP VIEW now supports the CASCADE and RESTRICT clauses (patch from Kerry Sainsbury)
@changelog_1035_li
@changelog_1043_li
CREATE VIEW now supports the OR REPLACE clause (patch from Kerry Sainsbury)
CREATE VIEW now supports the OR REPLACE clause (patch from Kerry Sainsbury)
@changelog_1036_li
@changelog_1044_li
Build tool: ability to only run one test using the -Dtest=className setting. eg: build -Dtest=org.h2.test.db.TestViewDropView test (patch from Kerry Sainsbury).
Build tool: ability to only run one test using the -Dtest=className setting. eg: build -Dtest=org.h2.test.db.TestViewDropView test (patch from Kerry Sainsbury).
@changelog_1037_h2
@changelog_1045_h2
Version 1.2.137 (2010-06-06)
Version 1.2.137 (2010-06-06)
@changelog_1038_li
@changelog_1046_li
Statements with a nested query and a condition that was always NULL threw an IndexOutOfBoundsException. Example: select * from (select null as x) where x=1
Statements with a nested query and a condition that was always NULL threw an IndexOutOfBoundsException. Example: select * from (select null as x) where x=1
@changelog_1039_li
@changelog_1047_li
The changes that were made to support large transactions also fixed a bug with large transactions (when the undo log file size is larger than 2 GB).
The changes that were made to support large transactions also fixed a bug with large transactions (when the undo log file size is larger than 2 GB).
@changelog_1040_li
@changelog_1048_li
Experimental feature to support very large transactions (except when using MVCC). To enable, set the system property h2.largeTransactions to true. If enabled, changes to tables without a primary key can be buffered to disk. The plan is to enable this feature by default in version 1.3.x.
Experimental feature to support very large transactions (except when using MVCC). To enable, set the system property h2.largeTransactions to true. If enabled, changes to tables without a primary key can be buffered to disk. The plan is to enable this feature by default in version 1.3.x.
@changelog_1041_li
@changelog_1049_li
H2 Console: editing result sets is now also working for database other than H2, if they do support updatable result sets. Add "@edit" before the query. Only limited testing has been done on this feature, some data types may not work (please provide feedback if you find issues).
H2 Console: editing result sets is now also working for database other than H2, if they do support updatable result sets. Add "@edit" before the query. Only limited testing has been done on this feature, some data types may not work (please provide feedback if you find issues).
@changelog_1042_li
@changelog_1050_li
Cluster: an open transaction was committed when a cluster node was stopped (because disabling the cluster executes SET CLUSTER '', which committed the transaction). Transaction are no longer committed when calling SET CLUSTER. Issue 199.
Cluster: an open transaction was committed when a cluster node was stopped (because disabling the cluster executes SET CLUSTER '', which committed the transaction). Transaction are no longer committed when calling SET CLUSTER. Issue 199.
@changelog_1043_li
@changelog_1051_li
Cluster: non-admin users couldn't connect to the cluster and couldn't disable the cluster. Issue 201.
Cluster: non-admin users couldn't connect to the cluster and couldn't disable the cluster. Issue 201.
@changelog_1044_li
@changelog_1052_li
Cluster: NEXTVAL('sequence') was only called on one cluster node, therefore sequence values could get out of sync.
Cluster: NEXTVAL('sequence') was only called on one cluster node, therefore sequence values could get out of sync.
@changelog_1045_li
@changelog_1053_li
Version 1.2.136 could not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision). A workaround has been implemented.
Version 1.2.136 could not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision). A workaround has been implemented.
@changelog_1046_li
@changelog_1054_li
The error code of IO exceptions in CSV functions was incorrect.
The error code of IO exceptions in CSV functions was incorrect.
@changelog_1047_li
@changelog_1055_li
The TriggerPassData example now uses a prefix (the database name).
The TriggerPassData example now uses a prefix (the database name).
@changelog_1048_li
@changelog_1056_li
The wrong exception was thrown when trying to reference a table that doesn't support references such as a table in the information schema.
The wrong exception was thrown when trying to reference a table that doesn't support references such as a table in the information schema.
@changelog_1049_li
@changelog_1057_li
Server.shutdownTcpServer can now stop all TCP servers on this JVM.
Server.shutdownTcpServer can now stop all TCP servers on this JVM.
@changelog_1050_li
@changelog_1058_li
JdbcConnectionPool: the default connection timeout is now 30 seconds (it used to be 5 minutes).
JdbcConnectionPool: the default connection timeout is now 30 seconds (it used to be 5 minutes).
@changelog_1051_li
@changelog_1059_li
LOB storage: LOBs added with "h2.lobInDatabase" enabled couldn't be read later with this option disabled.
LOB storage: LOBs added with "h2.lobInDatabase" enabled couldn't be read later with this option disabled.
@changelog_1052_h2
@changelog_1060_h2
Version 1.2.136 (2010-05-24)
Version 1.2.136 (2010-05-24)
@changelog_1053_li
@changelog_1061_li
When using ORDER BY and there are both ascending and descending indexes, the database used the first index even when the second one could be used for sorting.
When using ORDER BY and there are both ascending and descending indexes, the database used the first index even when the second one could be used for sorting.
@changelog_1054_li
@changelog_1062_li
Conditions of the form columnName IS NULL now use an index. To disable this feature, set the system property h2.optimizeIsNull to false.
Conditions of the form columnName IS NULL now use an index. To disable this feature, set the system property h2.optimizeIsNull to false.
@changelog_1055_li
@changelog_1063_li
H2 Console: when the settings were not stored yet (for example when running for the first time), the last recently used settings were not stored. A workaround was to create the file ".h2.server.properties" manually in the current user home directory, with the contents: webAllowOthers=false, webPort=8082, webSSL=false, 0=Generic H2 (Embedded)|org.h2.Driver|jdbc\:h2\:~/test|sa (where a comma is a newline).
H2 Console: when the settings were not stored yet (for example when running for the first time), the last recently used settings were not stored. A workaround was to create the file ".h2.server.properties" manually in the current user home directory, with the contents: webAllowOthers=false, webPort=8082, webSSL=false, 0=Generic H2 (Embedded)|org.h2.Driver|jdbc\:h2\:~/test|sa (where a comma is a newline).
@changelog_1056_li
@changelog_1064_li
The source code is now switched to Java 6 (JDK 1.6) by default. Java 5 (JDK 1.5) is still supported, and the jar file is still compiled for Java 5.
The source code is now switched to Java 6 (JDK 1.6) by default. Java 5 (JDK 1.5) is still supported, and the jar file is still compiled for Java 5.
@changelog_1057_li
@changelog_1065_li
The BOM (the byte-order-mark) character 0xfeff at the beginning of the file is ignored. This is for compatibility with Microsoft Excel.
The BOM (the byte-order-mark) character 0xfeff at the beginning of the file is ignored. This is for compatibility with Microsoft Excel.
@changelog_1058_li
@changelog_1066_li
When opening an existing database, the cache size is set to at most half the amount of memory available for the virtual machine (Runtime.getRuntime().maxMemory()), even if the cache size setting stored in the database is larger. Setting the cache size in the database URL or explicitly using SET CACHE_SIZE overrides this value (even if larger than the physical memory).
When opening an existing database, the cache size is set to at most half the amount of memory available for the virtual machine (Runtime.getRuntime().maxMemory()), even if the cache size setting stored in the database is larger. Setting the cache size in the database URL or explicitly using SET CACHE_SIZE overrides this value (even if larger than the physical memory).
@changelog_1059_li
@changelog_1067_li
INFORMATION_SCHEMA.SETTINGS: the cache size is now returned in KB.
INFORMATION_SCHEMA.SETTINGS: the cache size is now returned in KB.
@changelog_1060_li
@changelog_1068_li
New system property h2.selectForUpdateMvcc, the default is false (the feature is disabled). When enabled, SELECT ... FOR UPDATE only locks the selected rows in the MVCC mode. Aggregate or GROUP BY queries are not allowed in this case.
New system property h2.selectForUpdateMvcc, the default is false (the feature is disabled). When enabled, SELECT ... FOR UPDATE only locks the selected rows in the MVCC mode. Aggregate or GROUP BY queries are not allowed in this case.
@changelog_1061_li
@changelog_1069_li
Profiler: improved message if there was no stack trace.
Profiler: improved message if there was no stack trace.
@changelog_1062_li
@changelog_1070_li
The H2 Console can now be used within another application, in a frame or iframe. Issue 197.
The H2 Console can now be used within another application, in a frame or iframe. Issue 197.
@changelog_1063_li
@changelog_1071_li
Recover tool: the statistics section now includes page type counts again.
Recover tool: the statistics section now includes page type counts again.
@changelog_1064_li
@changelog_1072_li
Queries with multiple IN(...) conditions sometimes return the wrong results when there was a multi-column index for the column.
Queries with multiple IN(...) conditions sometimes return the wrong results when there was a multi-column index for the column.
@changelog_1065_li
@changelog_1073_li
Queries with IN(..., NULL) did sometimes return the wrong results when there was a index for the column.
Queries with IN(..., NULL) did sometimes return the wrong results when there was a index for the column.
@changelog_1066_li
@changelog_1074_li
DECIMAL: faster precision and memory usage calculations.
DECIMAL: faster precision and memory usage calculations.
@changelog_1067_li
@changelog_1075_li
A new class org.h2.tools.TriggerAdapter allows to use the ResultSet interface within trigger implementations.
A new class org.h2.tools.TriggerAdapter allows to use the ResultSet interface within trigger implementations.
@changelog_1068_li
@changelog_1076_li
A subselect which used an index could lead to wrong results. Fixed.
A subselect which used an index could lead to wrong results. Fixed.
@changelog_1069_li
@changelog_1077_li
Creating a cached temporary non persistent table with a primary key threw a NullPointerException.
Creating a cached temporary non persistent table with a primary key threw a NullPointerException.
@changelog_1070_h2
@changelog_1078_h2
Version 1.2.135 (2010-05-08)
Version 1.2.135 (2010-05-08)
@changelog_1071_li
@changelog_1079_li
Temporary files were not deleted when using large transactions, disabling autocommit, and closing the session without committing.
Temporary files were not deleted when using large transactions, disabling autocommit, and closing the session without committing.
@changelog_1072_li
@changelog_1080_li
Queries using multiple IN(..) conditions on the same table could cause repeated rows in the result set.
Queries using multiple IN(..) conditions on the same table could cause repeated rows in the result set.
@changelog_1073_li
@changelog_1081_li
Translation: Lubomir Grajciar translated the H2 Console as well as all error message to Slovensky. Thanks a lot!
Translation: Lubomir Grajciar translated the H2 Console as well as all error message to Slovensky. Thanks a lot!
@changelog_1074_li
@changelog_1082_li
There was a possible Java level deadlock when opening an uninitialized database and using a file system that also opened a database.
There was a possible Java level deadlock when opening an uninitialized database and using a file system that also opened a database.
@changelog_1075_li
@changelog_1083_li
When killing the process while the database was writing a checkpoint, while it was closing, or while running recovery (while removing temporary tables from a previous run), the database could become corrupt. A new test case has been implemented to ensure such problems can not occur in the future.
When killing the process while the database was writing a checkpoint, while it was closing, or while running recovery (while removing temporary tables from a previous run), the database could become corrupt. A new test case has been implemented to ensure such problems can not occur in the future.
@changelog_1076_li
@changelog_1084_li
File system: new method FileSystem.setReadOnly.
File system: new method FileSystem.setReadOnly.
@changelog_1077_li
@changelog_1085_li
The page size for new databases can now be set in the database URL using ;PAGE_SIZE=512. Currently this feature is only used to simplify testing.
The page size for new databases can now be set in the database URL using ;PAGE_SIZE=512. Currently this feature is only used to simplify testing.
@changelog_1078_li
@changelog_1086_li
New system property h2.functionsInSchema (default is false). If enabled, the SCRIPT statement always includes the schema name in the CREATE ALIAS statement (even if the schema is PUBLIC). This is not backward compatible with H2 versions 1.2.134 and older.
New system property h2.functionsInSchema (default is false). If enabled, the SCRIPT statement always includes the schema name in the CREATE ALIAS statement (even if the schema is PUBLIC). This is not backward compatible with H2 versions 1.2.134 and older.
@changelog_1079_li
@changelog_1087_li
Functions: it is no longer required to add a space after a comma in the parameter list. Example: CREATE ALIAS PARSE_INT FOR "java.lang.Integer.parseInt(java.lang.String,int)"
Functions: it is no longer required to add a space after a comma in the parameter list. Example: CREATE ALIAS PARSE_INT FOR "java.lang.Integer.parseInt(java.lang.String,int)"
@changelog_1080_li
@changelog_1088_li
Functions now reside within a schema, similar to sequences. If you do create such functions in schemas other than PUBLIC, then the database can not be opened with older versions of H2.
Functions now reside within a schema, similar to sequences. If you do create such functions in schemas other than PUBLIC, then the database can not be opened with older versions of H2.
@changelog_1081_li
@changelog_1089_li
Cluster: after a cluster node failed, the second cluster node can now be re-created and started without having to stop the first cluster node, and without having to stop running applications. To do that, append ;AUTO_RECONNECT=TRUE to the database URL.
Cluster: after a cluster node failed, the second cluster node can now be re-created and started without having to stop the first cluster node, and without having to stop running applications. To do that, append ;AUTO_RECONNECT=TRUE to the database URL.
@changelog_1082_li
@changelog_1090_li
Auto-reconnect: if another connection uses the database in exclusive mode then this connection will try to re-connect until the exclusive mode ends. This is important when using the cluster mode.
Auto-reconnect: if another connection uses the database in exclusive mode then this connection will try to re-connect until the exclusive mode ends. This is important when using the cluster mode.
@changelog_1083_li
@changelog_1091_li
SET EXCLUSIVE now supports 0 (disable), 1 (enable), and 2 (enable and close all other connections).
SET EXCLUSIVE now supports 0 (disable), 1 (enable), and 2 (enable and close all other connections).
@changelog_1084_li
@changelog_1092_li
Installing the H2 as a service should now work on Windows 7. The batch files now explicitly set the directory using pushd "%~dp0".
Installing the H2 as a service should now work on Windows 7. The batch files now explicitly set the directory using pushd "%~dp0".
@changelog_1085_li
@changelog_1093_li
Temporary tables can now be 'cached', that means indexes of temporary tables can be persisted. This enables very large temporary tables (both local and global).
Temporary tables can now be 'cached', that means indexes of temporary tables can be persisted. This enables very large temporary tables (both local and global).
@changelog_1086_li
@changelog_1094_li
The CreateCluster tool now sets the source database in exclusive mode before copying data to the new database.
The CreateCluster tool now sets the source database in exclusive mode before copying data to the new database.
@changelog_1087_li
@changelog_1095_li
The H2 Console now stream results one statement / result set at a time (using chunked transfer encoding). To disable, set the system property h2.consoleStream to false. This feature is not supported when using a servlet container.
The H2 Console now stream results one statement / result set at a time (using chunked transfer encoding). To disable, set the system property h2.consoleStream to false. This feature is not supported when using a servlet container.
@changelog_1088_li
@changelog_1096_li
The H2 Console did not call the CreateCluster tool with the correctly escaped parameters.
The H2 Console did not call the CreateCluster tool with the correctly escaped parameters.
@changelog_1089_li
@changelog_1097_li
Improved PostgreSQL compatibility for ALTER TABLE ALTER COLUMN.
Improved PostgreSQL compatibility for ALTER TABLE ALTER COLUMN.
@changelog_1090_li
@changelog_1098_li
Commas at the end of INSERT ... VALUES (), (), are now supported.
Commas at the end of INSERT ... VALUES (), (), are now supported.
@changelog_1091_li
@changelog_1099_li
The H2 Console "Start Browser" button now works even when the IP address changes while the tool runs (for example, because a wireless connection breaks, or when enabling / disabling the network connection).
The H2 Console "Start Browser" button now works even when the IP address changes while the tool runs (for example, because a wireless connection breaks, or when enabling / disabling the network connection).
@changelog_1092_li
@changelog_1100_li
When casting from float or double to BigDecimal, the result was sometimes unexpected, because "new BigDecimal(double val)" was used. Now "BigDecimal.valueOf(double val)" and "new BigDecimal(Float.toString(f))" are used. But it is still not recommended to use float or double for currency values (see data type documentation).
When casting from float or double to BigDecimal, the result was sometimes unexpected, because "new BigDecimal(double val)" was used. Now "BigDecimal.valueOf(double val)" and "new BigDecimal(Float.toString(f))" are used. But it is still not recommended to use float or double for currency values (see data type documentation).
@changelog_1093_li
@changelog_1101_li
Global temporary tables are now deleted when closing the database. Before, they were deleted when opening the database the next time.
Global temporary tables are now deleted when closing the database. Before, they were deleted when opening the database the next time.
@changelog_1094_li
@changelog_1102_li
UNIQUE was not listed as a keyword.
UNIQUE was not listed as a keyword.
@changelog_1095_li
@changelog_1103_li
Improved error message when an non-SQL-exception occurred in a user defined function. The method name and parameters are included in the error message.
Improved error message when an non-SQL-exception occurred in a user defined function. The method name and parameters are included in the error message.
@changelog_1096_li
@changelog_1104_li
For some queries, the exception did not include the SQL statement. Example: select x from system_range(1, 2) group by 'a'.
For some queries, the exception did not include the SQL statement. Example: select x from system_range(1, 2) group by 'a'.
@changelog_1097_li
@changelog_1105_li
The Shell tool will execute SQL statements passed as using the command line parameter -sql.
The Shell tool will execute SQL statements passed as using the command line parameter -sql.
@changelog_1098_li
@changelog_1106_li
If InetAddress.getLocalHost() fails, the database should now throw an exception.
If InetAddress.getLocalHost() fails, the database should now throw an exception.
@changelog_1099_li
@changelog_1107_li
New columns INFORMATION_SCHEMA.INDEXES.INDEX_CLASS and INFORMATION_SCHEMA.TABLES.TABLE_CLASS.
New columns INFORMATION_SCHEMA.INDEXES.INDEX_CLASS and INFORMATION_SCHEMA.TABLES.TABLE_CLASS.
@changelog_1100_li
@changelog_1108_li
INFORMATION_SCHEMA.INDEXES.SQL now contains the CREATE INDEX statement instead of just the fully qualified index name.
INFORMATION_SCHEMA.INDEXES.SQL now contains the CREATE INDEX statement instead of just the fully qualified index name.
@changelog_1101_h2
@changelog_1109_h2
Version 1.2.134 (2010-04-23)
Version 1.2.134 (2010-04-23)
@changelog_1102_li
@changelog_1110_li
New system property h2.analyzeAuto (default 0 meaning disabled) to automatically run ANALYZE after that many changes to a table. For details, see the Javadoc of this system property. The plan is to set this property to 2000 in version 1.3.x.
New system property h2.analyzeAuto (default 0 meaning disabled) to automatically run ANALYZE after that many changes to a table. For details, see the Javadoc of this system property. The plan is to set this property to 2000 in version 1.3.x.
@changelog_1103_li
@changelog_1111_li
JdbcXAConnection.start() does not support TMJOIN. Issue 189.
JdbcXAConnection.start() does not support TMJOIN. Issue 189.
@changelog_1104_li
@changelog_1112_li
MySQL compatibility: TIMESTAMPDIFF is now an alias for DATEDIFF.
MySQL compatibility: TIMESTAMPDIFF is now an alias for DATEDIFF.
@changelog_1105_li
@changelog_1113_li
MERGE did not respect foreign key and check constraints.
MERGE did not respect foreign key and check constraints.
@changelog_1106_li
@changelog_1114_li
ALTER TABLE ALTER COLUMN: changing the data type of a column no longer makes it nullable.
ALTER TABLE ALTER COLUMN: changing the data type of a column no longer makes it nullable.
@changelog_1107_li
@changelog_1115_li
When using AUTO_SERVER=TRUE, the server is now started as a daemon thread. This was a problem when using Tomcat and a connection pool.
When using AUTO_SERVER=TRUE, the server is now started as a daemon thread. This was a problem when using Tomcat and a connection pool.
@changelog_1108_li
@changelog_1116_li
Servers can now be started as a daemon thread using the command line options -tcpDaemon, -pgDaemon, and -webDaemon.
Servers can now be started as a daemon thread using the command line options -tcpDaemon, -pgDaemon, and -webDaemon.
@changelog_1109_li
@changelog_1117_li
H2 Console: the built-in commands are now documented.
H2 Console: the built-in commands are now documented.
@changelog_1110_li
@changelog_1118_li
REPLACE: if any parameter is null, the result is null.
REPLACE: if any parameter is null, the result is null.
@changelog_1111_li
@changelog_1119_li
Queries with DISTINCT and ORDER BY will now use the index on ORDER BY if possible. This is specially important for queries used inside IN(SELECT ...).
Queries with DISTINCT and ORDER BY will now use the index on ORDER BY if possible. This is specially important for queries used inside IN(SELECT ...).
@changelog_1112_li
@changelog_1120_li
The new statement EXPLAIN ANALYZE executes the statement, and displays the query plan with the actual row scan count for each table.
The new statement EXPLAIN ANALYZE executes the statement, and displays the query plan with the actual row scan count for each table.
@changelog_1113_li
@changelog_1121_li
H2 Console: the auto-complete feature didn't quote column names that need quoting. Issue 186.
H2 Console: the auto-complete feature didn't quote column names that need quoting. Issue 186.
@changelog_1114_li
@changelog_1122_li
The experimental LOB storage mechanism now supports all features of the old one. To use it, set the system property "h2.lobInDatabase" to "true". If you have used this feature in version 1.2.133, you need to export and re-import the database using SCRIPT / RUNSCRIPT.
The experimental LOB storage mechanism now supports all features of the old one. To use it, set the system property "h2.lobInDatabase" to "true". If you have used this feature in version 1.2.133, you need to export and re-import the database using SCRIPT / RUNSCRIPT.
@changelog_1115_li
@changelog_1123_li
The functions isBeforeFirst() and isAfterLast() were not compliant to the JDBC spec. If the ResultSet contains no rows, they must return false. Fixed.
The functions isBeforeFirst() and isAfterLast() were not compliant to the JDBC spec. If the ResultSet contains no rows, they must return false. Fixed.
@changelog_1116_li
@changelog_1124_li
Filesystem parameters like "split:" didn't work in server mode with baseDir set.
Filesystem parameters like "split:" didn't work in server mode with baseDir set.
@changelog_1117_li
@changelog_1125_li
If baseDir is set, and a database name is given which points to a directory outside the baseDir (eg. "../dbname"), an exception is thrown.
If baseDir is set, and a database name is given which points to a directory outside the baseDir (eg. "../dbname"), an exception is thrown.
@changelog_1118_h2
@changelog_1126_h2
Version 1.2.133 (2010-04-10)
Version 1.2.133 (2010-04-10)
@changelog_1119_li
@changelog_1127_li
A new experimental LOB storage mechanism is available. When enabled, CLOB and BLOB data is stored in hidden tables in the database. To use it, set the system property "h2.lobInDatabase" to "true". Compression is not yet implemented. Duplicate objects are only stored once. Usually writing is slower, but reading is faster (mainly because of caching).
A new experimental LOB storage mechanism is available. When enabled, CLOB and BLOB data is stored in hidden tables in the database. To use it, set the system property "h2.lobInDatabase" to "true". Compression is not yet implemented. Duplicate objects are only stored once. Usually writing is slower, but reading is faster (mainly because of caching).
@changelog_1120_li
@changelog_1128_li
The Shell tool threw a NumberFormatException on a empty statement.
The Shell tool threw a NumberFormatException on a empty statement.
@changelog_1121_li
@changelog_1129_li
The h2small-*.jar did not support "drop all objects delete files". Now it is supported (the DeleteDbFiles tool is now included).
The h2small-*.jar did not support "drop all objects delete files". Now it is supported (the DeleteDbFiles tool is now included).
@changelog_1122_li
@changelog_1130_li
Operations that don't fit in memory are now faster. Temporary file handling was changed.
Operations that don't fit in memory are now faster. Temporary file handling was changed.
@changelog_1123_li
@changelog_1131_li
The default maximum log stream size is now 2 MB. This is a good value according to some performance tests.
The default maximum log stream size is now 2 MB. This is a good value according to some performance tests.
@changelog_1124_li
@changelog_1132_li
New system property "h2.syncMethod" to configure what method to call when closing the database, on checkpoint, and on CHECKPOINT SYNC. The default is "sync" which calls RandomAccessFile.getFD().sync().
New system property "h2.syncMethod" to configure what method to call when closing the database, on checkpoint, and on CHECKPOINT SYNC. The default is "sync" which calls RandomAccessFile.getFD().sync().
@changelog_1125_li
@changelog_1133_li
ROWNUM could not be used for pagination. The follow query returned no rows: select x from (select *, rownum as r from system_range(1, 3)) where r=2;
ROWNUM could not be used for pagination. The follow query returned no rows: select x from (select *, rownum as r from system_range(1, 3)) where r=2;
@changelog_1126_li
@changelog_1134_li
Workaround for a java.sql.Date issue: years above 9999 are not formatted correctly. When calling ResultSet.getString() on a date value, an alternative formatting algorithm is used.
Workaround for a java.sql.Date issue: years above 9999 are not formatted correctly. When calling ResultSet.getString() on a date value, an alternative formatting algorithm is used.
@changelog_1127_li
@changelog_1135_li
Prepared statements with nested subqueries did not always return the correct result. Example: select ?, ?, (select count(*) from test t, (select id from test where 0=?) t2 where t2.id=t.id) from test
Prepared statements with nested subqueries did not always return the correct result. Example: select ?, ?, (select count(*) from test t, (select id from test where 0=?) t2 where t2.id=t.id) from test
@changelog_1128_li
@changelog_1136_li
When using MULTI_THREADED=TRUE, the exception following exception could be thrown: "object already exists: TABLES"
When using MULTI_THREADED=TRUE, the exception following exception could be thrown: "object already exists: TABLES"
@changelog_1129_li
@changelog_1137_li
Comparison of integer columns against float numbers was not always correct. Issue 182.
Comparison of integer columns against float numbers was not always correct. Issue 182.
@changelog_1130_li
@changelog_1138_li
H2 Console: Editing the result of a multi-line queries failed. Issue 183.
H2 Console: Editing the result of a multi-line queries failed. Issue 183.
@changelog_1131_li
@changelog_1139_li
H2 Console: if the settings file (.h2.properties) can't be accessed, the exception is now ignored.
H2 Console: if the settings file (.h2.properties) can't be accessed, the exception is now ignored.
@changelog_1132_h2
@changelog_1140_h2
Version 1.2.132 (2010-03-21)
Version 1.2.132 (2010-03-21)
@changelog_1133_li
@changelog_1141_li
The implementation of a Java to C (source code level) converter has been started. The plan is: it should be possible to convert H2 (or a part of it) to C so that the database can be run without a JVM. This will be a long term project (it may take a year or so).
The implementation of a Java to C (source code level) converter has been started. The plan is: it should be possible to convert H2 (or a part of it) to C so that the database can be run without a JVM. This will be a long term project (it may take a year or so).
@changelog_1134_li
@changelog_1142_li
User defined table implementation can now be used using CREATE TABLE ... ENGINE. Thanks to Sergi Vladykin for implementing this feature!
User defined table implementation can now be used using CREATE TABLE ... ENGINE. Thanks to Sergi Vladykin for implementing this feature!
@changelog_1135_li
@changelog_1143_li
Improved MS SQL Server compatibility: support string concatenation using "+". Thanks to Stepan for the patch!
Improved MS SQL Server compatibility: support string concatenation using "+". Thanks to Stepan for the patch!
@changelog_1136_li
@changelog_1144_li
When using the multi-threaded mode, running ANALYZE concurrently in multiple connections could throw an exception.
When using the multi-threaded mode, running ANALYZE concurrently in multiple connections could throw an exception.
@changelog_1137_li
@changelog_1145_li
The MERGE statement is now about 30% faster when using a PreparedStatement.
The MERGE statement is now about 30% faster when using a PreparedStatement.
@changelog_1138_li
@changelog_1146_li
Multi-column indexes where the second or later column was descending did not always produce correct results (rows were missing in the result set, or the result set was empty).
Multi-column indexes where the second or later column was descending did not always produce correct results (rows were missing in the result set, or the result set was empty).
@changelog_1139_li
@changelog_1147_li
When using large transactions or a small log size, the database could get very slow (profiling shows the hotspot is in FileObjectDisk.sync()).
When using large transactions or a small log size, the database could get very slow (profiling shows the hotspot is in FileObjectDisk.sync()).
@changelog_1140_li
@changelog_1148_li
The Shell tool now prints the stack trace when the list mode is enabled.
The Shell tool now prints the stack trace when the list mode is enabled.
@changelog_1141_li
@changelog_1149_li
CREATE ALIAS ... AS: Compilation was incorrect if the source code contained characters that are not supported by the default file encoding.
CREATE ALIAS ... AS: Compilation was incorrect if the source code contained characters that are not supported by the default file encoding.
@changelog_1142_li
@changelog_1150_li
Issue 176: the JdbcDataSource now also supports a 'description' property.
Issue 176: the JdbcDataSource now also supports a 'description' property.
@changelog_1143_li
@changelog_1151_li
The Shell tool threw a ArrayIndexOutOfBoundsException after 20 statements.
The Shell tool threw a ArrayIndexOutOfBoundsException after 20 statements.
@changelog_1144_li
@changelog_1152_li
When using the small version of H2 ('jarClient'), the first call to Connection.createBlob (or similar) could throw a ClassNotFoundException because the file org.h2.store.fs.FileSystemZip is not included. This missing class is now ignored.
When using the small version of H2 ('jarClient'), the first call to Connection.createBlob (or similar) could throw a ClassNotFoundException because the file org.h2.store.fs.FileSystemZip is not included. This missing class is now ignored.
@changelog_1145_li
@changelog_1153_li
Literals of type BIGINT now have the correct data type.
Literals of type BIGINT now have the correct data type.
@changelog_1146_h2
@changelog_1154_h2
Version 1.2.131 (2010-03-05)
Version 1.2.131 (2010-03-05)
@changelog_1147_li
@changelog_1155_li
Older versions of H2 (version 1.2.127 and older) could not connect to a new version (version 1.2.129 and newer). The connection blocked when trying to connect. Now the connection no longer blocks, instead a SQL exception is thrown.
Older versions of H2 (version 1.2.127 and older) could not connect to a new version (version 1.2.129 and newer). The connection blocked when trying to connect. Now the connection no longer blocks, instead a SQL exception is thrown.
@changelog_1148_li
@changelog_1156_li
In versions 1.2.129 and 1.2.130, a database could not be opened sometimes after dropping tables or indexes, and then creating new indexes for existing tables. The exception contained the text "parent not found" (version 1.2.129) or "Table not found" (version 1.2.130).
In versions 1.2.129 and 1.2.130, a database could not be opened sometimes after dropping tables or indexes, and then creating new indexes for existing tables. The exception contained the text "parent not found" (version 1.2.129) or "Table not found" (version 1.2.130).
@changelog_1149_li
@changelog_1157_li
After the database was closed, a null pointer exception could occur in Database.flush.
After the database was closed, a null pointer exception could occur in Database.flush.
@changelog_1150_li
@changelog_1158_li
An ArrayIndexOutOfBoundsException could occur in the page store (eg. on "delete from table"). Fixed.
An ArrayIndexOutOfBoundsException could occur in the page store (eg. on "delete from table"). Fixed.
@changelog_1151_h2
@changelog_1159_h2
Version 1.2.130 (2010-02-26)
Version 1.2.130 (2010-02-26)
@changelog_1152_li
@changelog_1160_li
EXPLAIN: The query plan now contains ".tableScan" if a table scan is used.
EXPLAIN: The query plan now contains ".tableScan" if a table scan is used.
@changelog_1153_li
@changelog_1161_li
IN(..): when combining and IN(..) condition with a condition that didn't use an index, the result could contain duplicate rows.
IN(..): when combining and IN(..) condition with a condition that didn't use an index, the result could contain duplicate rows.
@changelog_1154_li
@changelog_1162_li
IN(..): the index was not used if there were multiple IN(..) conditions.
IN(..): the index was not used if there were multiple IN(..) conditions.
@changelog_1155_li
@changelog_1163_li
For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
@changelog_1156_li
@changelog_1164_li
PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
@changelog_1157_li
@changelog_1165_li
A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
@changelog_1158_li
@changelog_1166_li
When using temporary tables, the database didn't shrink sometimes when closing. Also, sometimes a database could not recover normally.
When using temporary tables, the database didn't shrink sometimes when closing. Also, sometimes a database could not recover normally.
@changelog_1159_li
@changelog_1167_li
Large transactions could run out of heap space. The maximum size of a transaction is now much larger.
Large transactions could run out of heap space. The maximum size of a transaction is now much larger.
@changelog_1160_li
@changelog_1168_li
The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
@changelog_1161_li
@changelog_1169_li
Creating a database was delayed about 2 seconds if the directory didn't exist.
Creating a database was delayed about 2 seconds if the directory didn't exist.
@changelog_1162_li
@changelog_1170_li
Implemented INIT feature. If the database URL contains ";INIT=...;" then the DDL or DML commands following are executed on startup. Example URL: jdbc:h2:mem:test;INIT=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
Implemented INIT feature. If the database URL contains ";INIT=...;" then the DDL or DML commands following are executed on startup. Example URL: jdbc:h2:mem:test;INIT=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
@changelog_1163_h2
@changelog_1171_h2
Version 1.2.129 (2010-02-19)
Version 1.2.129 (2010-02-19)
@changelog_1164_li
@changelog_1172_li
The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
@changelog_1165_li
@changelog_1173_li
CREATE ALIAS: error message when compiling Java code have been improved.
CREATE ALIAS: error message when compiling Java code have been improved.
@changelog_1166_li
@changelog_1174_li
MVCC: creating a table with an incorrect constraint could cause strange errors.
MVCC: creating a table with an incorrect constraint could cause strange errors.
@changelog_1167_li
@changelog_1175_li
Hash indexes now are only used for single column indexes.
Hash indexes now are only used for single column indexes.
@changelog_1168_li
@changelog_1176_li
The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
@changelog_1169_li
@changelog_1177_li
The file system abstraction no longer throws SQL exceptions.
The file system abstraction no longer throws SQL exceptions.
@changelog_1170_li
@changelog_1178_li
DatabaseEventListener.diskSpaceIsLow has changed.
DatabaseEventListener.diskSpaceIsLow has changed.
@changelog_1171_li
@changelog_1179_li
The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
@changelog_1172_li
@changelog_1180_li
SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
@changelog_1173_li
@changelog_1181_li
When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
@changelog_1174_li
@changelog_1182_li
The BNF parser now uses the visitor pattern.
The BNF parser now uses the visitor pattern.
@changelog_1175_li
@changelog_1183_li
Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
@changelog_1176_li
@changelog_1184_li
The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
@changelog_1177_li
@changelog_1185_li
H2 Console: asynchronous login (using a DatabaseEventListener) is no longer supported.
H2 Console: asynchronous login (using a DatabaseEventListener) is no longer supported.
@changelog_1178_li
@changelog_1186_li
A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
@changelog_1179_li
@changelog_1187_li
The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
@changelog_1180_li
@changelog_1188_li
Tools: the method run(String... args) has been renamed to runTool(String... args).
Tools: the method run(String... args) has been renamed to runTool(String... args).
@changelog_1181_li
@changelog_1189_li
Server.startWebServer(Connection) was not working as expected.
Server.startWebServer(Connection) was not working as expected.
@changelog_1182_li
@changelog_1190_li
The database URL option ACCESS_MODE_LOG is no longer supported.
The database URL option ACCESS_MODE_LOG is no longer supported.
@changelog_1183_li
@changelog_1191_li
The database URL option RECOVER has currently no effect.
The database URL option RECOVER has currently no effect.
@changelog_1184_li
@changelog_1192_li
Converting an old (non-page store) database is no longer supported using this version.
Converting an old (non-page store) database is no longer supported using this version.
@changelog_1185_li
@changelog_1193_li
The following system properties are no longer supported: h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
The following system properties are no longer supported: h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
@changelog_1186_li
@changelog_1194_li
The setting LOG has currently no effect (it only had an effect when the page store was disabled).
The setting LOG has currently no effect (it only had an effect when the page store was disabled).
@changelog_1187_li
@changelog_1195_li
Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
@changelog_1188_li
@changelog_1196_li
The translated resources are now stored in UTF-8 format.
The translated resources are now stored in UTF-8 format.
@changelog_1189_li
@changelog_1197_li
The Windows service wrapper now detects if multiple versions of H2 are installed.
The Windows service wrapper now detects if multiple versions of H2 are installed.
@changelog_1190_h2
@changelog_1198_h2
Version 1.2.128 (2010-01-30)
Version 1.2.128 (2010-01-30)
@changelog_1191_li
@changelog_1199_li
There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http://code.google.com/p/h2database/issues/detail?id=158
There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http://code.google.com/p/h2database/issues/detail?id=158
@changelog_1192_li
@changelog_1200_li
The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
@changelog_1193_li
@changelog_1201_li
Automatic conversion of old databases to the page store format failed if the database contained LOB files.
Automatic conversion of old databases to the page store format failed if the database contained LOB files.
@changelog_1194_li
@changelog_1202_li
Nested subqueries didn't work for INSERT INTO and IN(..). Example: insert into test ((select 1));
Nested subqueries didn't work for INSERT INTO and IN(..). Example: insert into test ((select 1));
@changelog_1195_li
@changelog_1203_li
If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
@changelog_1196_li
@changelog_1204_li
Less classes are loaded when using the database in embedded mode.
Less classes are loaded when using the database in embedded mode.
@changelog_1197_li
@changelog_1205_li
The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
@changelog_1198_li
@changelog_1206_li
Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example: select count(*) from (select 1 union (select 2 intersect select 2)) x;
Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example: select count(*) from (select 1 union (select 2 intersect select 2)) x;
@changelog_1199_li
@changelog_1207_li
Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
@changelog_1200_li
@changelog_1208_li
Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
@changelog_1201_li
@changelog_1209_li
Documentation: the javadocs for Csv.write and read used the wrong default charset.
Documentation: the javadocs for Csv.write and read used the wrong default charset.
@changelog_1202_li
@changelog_1210_li
MVCC: if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
MVCC: if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
@changelog_1203_li
@changelog_1211_li
If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
@changelog_1204_li
@changelog_1212_li
Triggers: INSTEAD OF triggers are now supported. Such triggers can be defined on views.
Triggers: INSTEAD OF triggers are now supported. Such triggers can be defined on views.
@changelog_1205_li
@changelog_1213_li
New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
@changelog_1206_li
@changelog_1214_li
Slightly improved performance if the table is already locked.
Slightly improved performance if the table is already locked.
@changelog_1207_li
@changelog_1215_li
CompressLZF: faster decompression.
CompressLZF: faster decompression.
@changelog_1208_li
@changelog_1216_li
PgServer: the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
PgServer: the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
@changelog_1209_li
@changelog_1217_li
Serialized access mode (server-less multi-connection mode): fixed getGeneratedKeys() for sequences.
Serialized access mode (server-less multi-connection mode): fixed getGeneratedKeys() for sequences.
@changelog_1210_h2
@changelog_1218_h2
Version 1.2.127 (2010-01-15)
Version 1.2.127 (2010-01-15)
@changelog_1211_li
@changelog_1219_li
Serialized access mode (server-less multi-connection mode): sequences did not work as expected (there were gaps in generated values when using multiple connections).
Serialized access mode (server-less multi-connection mode): sequences did not work as expected (there were gaps in generated values when using multiple connections).
@changelog_1212_li
@changelog_1220_li
Page store: new databases can not be opened with older versions.
Page store: new databases can not be opened with older versions.
@changelog_1213_li
@changelog_1221_li
Page store: adding data to new database is now faster.
Page store: adding data to new database is now faster.
@changelog_1214_li
@changelog_1222_li
File system: getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
File system: getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
@changelog_1215_li
@changelog_1223_li
PgServer: incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches!
PgServer: incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches!
@changelog_1216_li
@changelog_1224_li
SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
@changelog_1217_li
@changelog_1225_li
Page store: the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
Page store: the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
@changelog_1218_li
@changelog_1226_li
Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
@changelog_1219_li
@changelog_1227_li
If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
@changelog_1220_li
@changelog_1228_li
Alter table is now supported even if a table has views defined. (Patch from Kerry Sainsbury).
Alter table is now supported even if a table has views defined. (Patch from Kerry Sainsbury).
@changelog_1221_li
@changelog_1229_li
Fulltext search: exceptions within the fulltext search package had the wrong SQL state.
Fulltext search: exceptions within the fulltext search package had the wrong SQL state.
@changelog_1222_li
@changelog_1230_li
The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
@changelog_1223_li
@changelog_1231_li
Trigger can now be called on rollback.
Trigger can now be called on rollback.
@changelog_1224_li
@changelog_1232_li
The shell script h2.sh ignored command line line arguments.
The shell script h2.sh ignored command line line arguments.
@changelog_1225_li
@changelog_1233_li
When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
@changelog_1226_li
@changelog_1234_li
The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
@changelog_1227_li
@changelog_1235_li
Native fulltext search: before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
Native fulltext search: before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
@changelog_1228_li
@changelog_1236_li
The .trace.db file is now only created if required.
The .trace.db file is now only created if required.
@changelog_1229_li
@changelog_1237_li
Shell tool: improved PostgreSQL compatibility.
Shell tool: improved PostgreSQL compatibility.
@changelog_1230_li
@changelog_1238_li
Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
@changelog_1231_li
@changelog_1239_li
H2 Console: data that is too long is now abbreviated as follows: text... (100000 characters). A large binary is abbreviated as follows: abcdef... (100000 bytes).
H2 Console: data that is too long is now abbreviated as follows: text... (100000 characters). A large binary is abbreviated as follows: abcdef... (100000 bytes).
@changelog_1232_li
@changelog_1240_li
Faster data conversion from BIGINT or INT to DECIMAL.
Faster data conversion from BIGINT or INT to DECIMAL.
@changelog_1233_li
@changelog_1241_li
Server-less multi-connection mode: try to delete log files if switching between read/write operations.
Server-less multi-connection mode: try to delete log files if switching between read/write operations.
@changelog_1234_li
@changelog_1242_li
CompressLZF: Faster decompress and improved javadocs
CompressLZF: Faster decompress and improved javadocs
@changelog_1235_h2
@changelog_1243_h2
Version 1.2.126 (2009-12-18)
Version 1.2.126 (2009-12-18)
@changelog_1236_li
@changelog_1244_li
The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
@changelog_1237_li
@changelog_1245_li
CSVREAD: when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
CSVREAD: when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
@changelog_1238_li
@changelog_1246_li
Optimization index conditions of the form 'column=NULL' (which is always false; unlike 'column IS NULL').
Optimization index conditions of the form 'column=NULL' (which is always false; unlike 'column IS NULL').
@changelog_1239_li
@changelog_1247_li
Script command and tool: the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
Script command and tool: the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
@changelog_1240_li
@changelog_1248_li
Statements with IN(SELECT..) conditions could produce the wrong result. Example: index on id, name; query: select * from test where id between 1 and 3 and name in (select 'World').
Statements with IN(SELECT..) conditions could produce the wrong result. Example: index on id, name; query: select * from test where id between 1 and 3 and name in (select 'World').
@changelog_1241_li
@changelog_1249_li
Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example: index on id; index on name; query: select * from (select * from test) where id=1 and name in('a', 'b'). select * from (select * from test) where id=1 and name in('Hello', 'World').
Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example: index on id; index on name; query: select * from (select * from test) where id=1 and name in('a', 'b'). select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1242_li
@changelog_1250_li
Page store: a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
Page store: a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
@changelog_1243_li
@changelog_1251_li
JaQu: the decompiler has been improved, and a few test cases already work. It is still incomplete however.
JaQu: the decompiler has been improved, and a few test cases already work. It is still incomplete however.
@changelog_1244_li
@changelog_1252_li
LIKE: any letter is now allowed after the escape character (which is still '\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
LIKE: any letter is now allowed after the escape character (which is still '\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
@changelog_1245_li
@changelog_1253_li
The reserve heap memory is no longer used.
The reserve heap memory is no longer used.
@changelog_1246_li
@changelog_1254_li
Database.checkpoint() could throw a NullPointerException.
Database.checkpoint() could throw a NullPointerException.
@changelog_1247_h2
@changelog_1255_h2
Version 1.2.125 (2009-12-06)
Version 1.2.125 (2009-12-06)
@changelog_1248_li
@changelog_1256_li
Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
@changelog_1249_li
@changelog_1257_li
The shell tool now has a very simple statement history.
The shell tool now has a very simple statement history.
@changelog_1250_li
@changelog_1258_li
The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
@changelog_1251_li
@changelog_1259_li
Right outer joins on tables that were already 'inner joined' was processed incorrectly.
Right outer joins on tables that were already 'inner joined' was processed incorrectly.
@changelog_1252_li
@changelog_1260_li
Temporary files from LOB objects were not deleted early enough when using the server mode.
Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1253_li
@changelog_1261_li
Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
@changelog_1254_li
@changelog_1262_li
When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
@changelog_1255_li
@changelog_1263_li
Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
@changelog_1256_li
@changelog_1264_li
Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
@changelog_1257_li
@changelog_1265_li
Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1258_li
@changelog_1266_li
The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
@changelog_1259_li
@changelog_1267_li
The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
@changelog_1260_li
@changelog_1268_li
Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
@changelog_1261_li
@changelog_1269_li
The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
@changelog_1262_li
@changelog_1270_li
More bugs in the server-less multi-connection mode have been fixed.
More bugs in the server-less multi-connection mode have been fixed.
@changelog_1263_li
@changelog_1271_li
When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
@changelog_1264_li
@changelog_1272_li
JdbcConnectionPool.getConnection() could throw a NullPointerException.
JdbcConnectionPool.getConnection() could throw a NullPointerException.
@changelog_1265_li
@changelog_1273_li
User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
@changelog_1266_li
@changelog_1274_li
User defined functions with source code didn't work after re-opening the database.
User defined functions with source code didn't work after re-opening the database.
@changelog_1267_li
@changelog_1275_li
The newsfeeds are now Atom 1.0 standard compliant.
The newsfeeds are now Atom 1.0 standard compliant.
@changelog_1268_li
@changelog_1276_li
The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
@changelog_1269_li
@changelog_1277_li
Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
@changelog_1270_li
@changelog_1278_li
Drop table did not delete lob files in old file store (not PAGE_STORE).
Drop table did not delete lob files in old file store (not PAGE_STORE).
@changelog_1271_h2
@changelog_1279_h2
Version 1.2.124 (2009-11-20)
Version 1.2.124 (2009-11-20)
@changelog_1272_li
@changelog_1280_li
Clustering: there is now a way to detect which cluster instances are running.
Clustering: there is now a way to detect which cluster instances are running.
@changelog_1273_li
@changelog_1281_li
ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
@changelog_1274_li
@changelog_1282_li
The file lock thread is now stopped when the database is closed.
The file lock thread is now stopped when the database is closed.
@changelog_1275_li
@changelog_1283_li
Issue 140: the Script tool now supports writing to a stream.
Issue 140: the Script tool now supports writing to a stream.
@changelog_1276_li
@changelog_1284_li
Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
@changelog_1277_li
@changelog_1285_li
Page store: new databases can not be opened with older versions.
Page store: new databases can not be opened with older versions.
@changelog_1278_li
@changelog_1286_li
Page store: multi-column indexes didn't work if the cache was very small.
Page store: multi-column indexes didn't work if the cache was very small.
@changelog_1279_li
@changelog_1287_li
Page store: opening a database could theoretically result in an endless loop.
Page store: opening a database could theoretically result in an endless loop.
@changelog_1280_li
@changelog_1288_li
Page store: adding large indexed columns could get very slow.
Page store: adding large indexed columns could get very slow.
@changelog_1281_li
@changelog_1289_li
Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
@changelog_1282_li
@changelog_1290_li
Page store: the recover tool sometimes generated a script file that contained duplicate data.
Page store: the recover tool sometimes generated a script file that contained duplicate data.
@changelog_1283_li
@changelog_1291_li
Page store: sometimes opening a read-only database failed.
Page store: sometimes opening a read-only database failed.
@changelog_1284_li
@changelog_1292_li
Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
@changelog_1285_li
@changelog_1293_li
Page store: when using a very small page size (128 bytes or smaller), writing a large row could result in an endless recursion. This is only a theoretical problem, as the page size is 2 KB.
Page store: when using a very small page size (128 bytes or smaller), writing a large row could result in an endless recursion. This is only a theoretical problem, as the page size is 2 KB.
@changelog_1286_li
@changelog_1294_li
Page store: getting the min value from a descending index with NULL entries could return the wrong result.
Page store: getting the min value from a descending index with NULL entries could return the wrong result.
@changelog_1287_li
@changelog_1295_li
Page store: improved auto-recovery after power failure.
Page store: improved auto-recovery after power failure.
@changelog_1288_li
@changelog_1296_li
The JDBC client did not detect that it was not talking to an H2 server. This could result in strange exceptions when trying to connect to another kind of server.
The JDBC client did not detect that it was not talking to an H2 server. This could result in strange exceptions when trying to connect to another kind of server.
@changelog_1289_li
@changelog_1297_li
User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
@changelog_1290_li
@changelog_1298_li
Database file lock: the exception "lock file modified in the future" is no longer thrown; instead, opening the file will be delayed by 2 seconds.
Database file lock: the exception "lock file modified in the future" is no longer thrown; instead, opening the file will be delayed by 2 seconds.
@changelog_1291_li
@changelog_1299_li
Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
@changelog_1292_li
@changelog_1300_li
Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
@changelog_1293_li
@changelog_1301_li
Improved read-only database detection.
Improved read-only database detection.
@changelog_1294_h2
@changelog_1302_h2
Version 1.2.123 (2009-11-08)
Version 1.2.123 (2009-11-08)
@changelog_1295_li
@changelog_1303_li
Page store: new databases can not be opened with older versions.
Page store: new databases can not be opened with older versions.
@changelog_1296_li
@changelog_1304_li
Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
@changelog_1297_li
@changelog_1305_li
Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
@changelog_1298_li
@changelog_1306_li
When using multi-threaded kernel mode, setting disabling locking (LOCK_MODE=0) will now throw an exception. At this time this combination will result in corruption when multiple threads try to update the same table.
When using multi-threaded kernel mode, setting disabling locking (LOCK_MODE=0) will now throw an exception. At this time this combination will result in corruption when multiple threads try to update the same table.
@changelog_1299_li
@changelog_1307_li
The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
@changelog_1300_li
@changelog_1308_li
The Lucene fulltext search now also returns the score.
The Lucene fulltext search now also returns the score.
@changelog_1301_li
@changelog_1309_li
New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
@changelog_1302_li
@changelog_1310_li
Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
@changelog_1303_li
@changelog_1311_li
Improved error messages: identifiers and values are now quoted.
Improved error messages: identifiers and values are now quoted.
@changelog_1304_li
@changelog_1312_li
Improved error message when casting a value failed: the column name and type is included in the message.
Improved error message when casting a value failed: the column name and type is included in the message.
@changelog_1305_li
@changelog_1313_li
Improved support for GAE for Java thanks to Vince Bonfanti.
Improved support for GAE for Java thanks to Vince Bonfanti.
@changelog_1306_h2
@changelog_1314_h2
Version 1.2.122 (2009-10-28)
Version 1.2.122 (2009-10-28)
@changelog_1307_li
@changelog_1315_li
The native fulltext search now supports streaming CLOB data.
The native fulltext search now supports streaming CLOB data.
@changelog_1308_li
@changelog_1316_li
If the database URL ends with ;PAGE_STORE=TRUE and a database in the old format exists, it is automatically converted to the new page store format if possible. A backup of the database is created first. Automatic conversion is not supported if the database was not closed normally (if it contains uncommitted transactions).
If the database URL ends with ;PAGE_STORE=TRUE and a database in the old format exists, it is automatically converted to the new page store format if possible. A backup of the database is created first. Automatic conversion is not supported if the database was not closed normally (if it contains uncommitted transactions).
@changelog_1309_li
@changelog_1317_li
Dropping the current user is now allowed if another admin user exists.
Dropping the current user is now allowed if another admin user exists.
@changelog_1310_li
@changelog_1318_li
Values of type BINARY or BLOB could not be converted to the data type OTHER.
Values of type BINARY or BLOB could not be converted to the data type OTHER.
@changelog_1311_li
@changelog_1319_li
SHUTDOWN COMPACT now fully compacts the database.
SHUTDOWN COMPACT now fully compacts the database.
@changelog_1312_li
@changelog_1320_li
New system properties h2.maxCompactCount and h2.maxCompactTime to allow changing the default behavior (at most 2 seconds compacting when closing the database).
New system properties h2.maxCompactCount and h2.maxCompactTime to allow changing the default behavior (at most 2 seconds compacting when closing the database).
@changelog_1313_li
@changelog_1321_li
New sorted insert optimization (see Performance / Database Performance Tuning).
New sorted insert optimization (see Performance / Database Performance Tuning).
@changelog_1314_li
@changelog_1322_li
Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
@changelog_1315_li
@changelog_1323_li
Page store: opening a large database was slow if it was not closed before.
Page store: opening a large database was slow if it was not closed before.
@changelog_1316_li
@changelog_1324_li
Page store: new write and read counters in the meta data table. Use SELECT * FROM INFORMATION_SCHEMA.SETTINGS WHERE NAME IN( 'info.FILE_WRITE_TOTAL', 'info.FILE_WRITE', 'info.FILE_READ', 'info.CACHE_MAX_SIZE', 'info.CACHE_SIZE')
Page store: new write and read counters in the meta data table. Use SELECT * FROM INFORMATION_SCHEMA.SETTINGS WHERE NAME IN( 'info.FILE_WRITE_TOTAL', 'info.FILE_WRITE', 'info.FILE_READ', 'info.CACHE_MAX_SIZE', 'info.CACHE_SIZE')
@changelog_1317_li
@changelog_1325_li
The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
@changelog_1318_li
@changelog_1326_li
The documentation is no longer available in Japanese because the translation was too much out of sync. Please use the Google translation instead.
The documentation is no longer available in Japanese because the translation was too much out of sync. Please use the Google translation instead.
@changelog_1319_li
@changelog_1327_li
Certain queries were not sorted if subselect queries were involved
Certain queries were not sorted if subselect queries were involved
@changelog_1320_li
@changelog_1328_li
More bugs in the server-less multi-connection mode have been fixed: 90097 The database is read only, caches must be cleared on reconnect, etc.
More bugs in the server-less multi-connection mode have been fixed: 90097 The database is read only, caches must be cleared on reconnect, etc.
@changelog_1321_h2
@changelog_1329_h2
Version 1.2.121 (2009-10-11)
Version 1.2.121 (2009-10-11)
@changelog_1322_li
@changelog_1330_li
Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
@changelog_1323_li
@changelog_1331_li
CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
@changelog_1324_li
@changelog_1332_li
If a database in the old format exists, it is now used. The system property is used for new databases, or if databases exist in both formats. In any case, the flag in the URL overrides this logic.
If a database in the old format exists, it is now used. The system property is used for new databases, or if databases exist in both formats. In any case, the flag in the URL overrides this logic.
@changelog_1325_li
@changelog_1333_li
Page store bugs were fixed. Large values in indexed columns could corrupt the index.
Page store bugs were fixed. Large values in indexed columns could corrupt the index.
@changelog_1326_li
@changelog_1334_li
The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
@changelog_1327_li
@changelog_1335_li
New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
@changelog_1328_h2
@changelog_1336_h2
Version 1.2.120 (2009-10-04)
Version 1.2.120 (2009-10-04)
@changelog_1329_li
@changelog_1337_li
This is a beta version.
This is a beta version.
@changelog_1330_li
@changelog_1338_li
Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
@changelog_1331_li
@changelog_1339_li
In version 1.2, the following system properties are now enabled by default: h2.pageStore, h2.nullConcatIsNull, h2.optimizeInList. The default value for h2.defaultMaxLengthInplaceLob is now 4096 (it was 1024 with version 1.1).
In version 1.2, the following system properties are now enabled by default: h2.pageStore, h2.nullConcatIsNull, h2.optimizeInList. The default value for h2.defaultMaxLengthInplaceLob is now 4096 (it was 1024 with version 1.1).
@changelog_1332_li
@changelog_1340_li
New databases are now stored in the new 'page store' file format. Existing databases are kept in the old file format. To use the old file format, append ;PAGE_STORE=FALSE to the database URL or set the system property h2.pageStore to false.
New databases are now stored in the new 'page store' file format. Existing databases are kept in the old file format. To use the old file format, append ;PAGE_STORE=FALSE to the database URL or set the system property h2.pageStore to false.
@changelog_1333_li
@changelog_1341_li
Issue 125: Renaming primary keys was not persistent. Fixed. Unfortunately, databases created by this version can not be opened with older versions because of this change.
Issue 125: Renaming primary keys was not persistent. Fixed. Unfortunately, databases created by this version can not be opened with older versions because of this change.
@changelog_1334_li
@changelog_1342_li
Issue 124: Hibernate schema validation failed for decimal/numeric columns. This problem is fixed in the Hibernate dialect that is included with H2 (src/tools/org/hibernate/dialect/H2Dialect.java.txt), but not in Hibernate yet.
Issue 124: Hibernate schema validation failed for decimal/numeric columns. This problem is fixed in the Hibernate dialect that is included with H2 (src/tools/org/hibernate/dialect/H2Dialect.java.txt), but not in Hibernate yet.
@changelog_1335_li
@changelog_1343_li
PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
@changelog_1336_li
@changelog_1344_li
Linked tables now support default values when inserting, updating or merging.
Linked tables now support default values when inserting, updating or merging.
@changelog_1337_li
@changelog_1345_li
Bugfixes in the page store.
Bugfixes in the page store.
@changelog_1338_li
@changelog_1346_li
Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
@changelog_1339_li
@changelog_1347_li
Allow writing to linked tables in readonly databases.
Allow writing to linked tables in readonly databases.
@changelog_1340_h2
@changelog_1348_h2
Version 1.1.119 (2009-09-26)
Version 1.1.119 (2009-09-26)
@changelog_1341_li
@changelog_1349_li
SQL statements in the exception message are no longer included if they contain '--hide--'.
SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1342_li
@changelog_1350_li
Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
@changelog_1343_li
@changelog_1351_li
New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
@changelog_1344_li
@changelog_1352_li
New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
@changelog_1345_li
@changelog_1353_li
The cache algorithm TQ is disabled in this version, because it is unstable, and because the current implementation does not have any measurable advantages over the default.
The cache algorithm TQ is disabled in this version, because it is unstable, and because the current implementation does not have any measurable advantages over the default.
@changelog_1346_li
@changelog_1354_li
New committer: Christian Peter. He works for <a href="http://www.docware.com">Docware</a> and helped a lot finding and fixing bugs, and generally improving the database. He is now a committer.
New committer: Christian Peter. He works for <a href="http://www.docware.com">Docware</a> and helped a lot finding and fixing bugs, and generally improving the database. He is now a committer.
@changelog_1347_li
@changelog_1355_li
ChangeFileEncryption did not work with Lob subdirectories. Fixed.
ChangeFileEncryption did not work with Lob subdirectories. Fixed.
@changelog_1348_li
@changelog_1356_li
Issue 121: JaQu: new simple update and merge methods.
Issue 121: JaQu: new simple update and merge methods.
@changelog_1349_li
@changelog_1357_li
Issue 120: JaQu didn't close result sets.
Issue 120: JaQu didn't close result sets.
@changelog_1350_li
@changelog_1358_li
Issue 119: JaQu creates wrong WHERE conditions on some inputs.
Issue 119: JaQu creates wrong WHERE conditions on some inputs.
@changelog_1351_li
@changelog_1359_li
The new page store mechanism is now alpha-level quality. The next release will most likely be "1.2.120 beta" where this mode is enabled by default. To use it right now, append ;PAGE_STORE=TRUE to the database URL. The file format of this mode will probably not change any more.
The new page store mechanism is now alpha-level quality. The next release will most likely be "1.2.120 beta" where this mode is enabled by default. To use it right now, append ;PAGE_STORE=TRUE to the database URL. The file format of this mode will probably not change any more.
@changelog_1352_li
@changelog_1360_li
SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
@changelog_1353_li
@changelog_1361_li
The Recover tool now also processes the log files, however applying those changes is still a manual process.
The Recover tool now also processes the log files, however applying those changes is still a manual process.
@changelog_1354_li
@changelog_1362_li
New sample application that shows how to pass data to a trigger.
New sample application that shows how to pass data to a trigger.
@changelog_1355_li
@changelog_1363_li
More bugs in the server-less multi-connection mode have been fixed: On Windows, two processes could write to the same database at the same time.
More bugs in the server-less multi-connection mode have been fixed: On Windows, two processes could write to the same database at the same time.
@changelog_1356_li
@changelog_1364_li
When loading triggers or other client classes (static functions, database event listener, user aggregate functions, other JDBC drivers), the database now uses the context class loader if the class could not be found using Class.forName().
When loading triggers or other client classes (static functions, database event listener, user aggregate functions, other JDBC drivers), the database now uses the context class loader if the class could not be found using Class.forName().
@changelog_1357_li
@changelog_1365_li
Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
@changelog_1358_li
@changelog_1366_li
Statement.getConnection() threw an exception if the connection was already closed.
Statement.getConnection() threw an exception if the connection was already closed.
@changelog_1359_li
@changelog_1367_li
The native fulltext index kept a reference to a database after the database was closed.
The native fulltext index kept a reference to a database after the database was closed.
@changelog_1360_li
@changelog_1368_li
Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1361_li
@changelog_1369_li
The optimizer does a better job for joins if indexes are missing.
The optimizer does a better job for joins if indexes are missing.
@changelog_1362_h2
@changelog_1370_h2
Version 1.1.118 (2009-09-04)
Version 1.1.118 (2009-09-04)
@changelog_1363_li
@changelog_1371_li
SHOW COLUMNS only listed indexed columns.
SHOW COLUMNS only listed indexed columns.
@changelog_1364_li
@changelog_1372_li
When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
@changelog_1365_li
@changelog_1373_li
DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
@changelog_1366_li
@changelog_1374_li
AUTO_INCREMENT now works in the same way in ALTER TABLE ALTER COLUMN as in CREATE TABLE (it does not create a primary key).
AUTO_INCREMENT now works in the same way in ALTER TABLE ALTER COLUMN as in CREATE TABLE (it does not create a primary key).
@changelog_1367_li
@changelog_1375_li
Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
@changelog_1368_li
@changelog_1376_li
Better support GaeVFS (Google App Engine Virtual File System).
Better support GaeVFS (Google App Engine Virtual File System).
@changelog_1369_li
@changelog_1377_li
JaQu: the plan is to support natural (pure Java / Scala) conditions such as (id == 1 && name.equals("Test")). A proof of concept decompiler is now included (it doesn't work yet).
JaQu: the plan is to support natural (pure Java / Scala) conditions such as (id == 1 && name.equals("Test")). A proof of concept decompiler is now included (it doesn't work yet).
@changelog_1370_li
@changelog_1378_li
Various bugfixes and improvements in the page store mechanism (still experimental).
Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1371_li
@changelog_1379_li
PreparedStatement.setObject now converts a java.lang.Character to a string.
PreparedStatement.setObject now converts a java.lang.Character to a string.
@changelog_1372_li
@changelog_1380_li
H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
@changelog_1373_li
@changelog_1381_li
Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
@changelog_1374_li
@changelog_1382_li
H2 Console: indexes of tables of non-default schemas are now also listed.
H2 Console: indexes of tables of non-default schemas are now also listed.
@changelog_1375_li
@changelog_1383_li
Issue 111: Multi-version concurrency / duplicate primary key after rollback.
Issue 111: Multi-version concurrency / duplicate primary key after rollback.
@changelog_1376_li
@changelog_1384_li
Issue 110: Multi-version concurrency / wrong exception is thrown.
Issue 110: Multi-version concurrency / wrong exception is thrown.
@changelog_1377_li
@changelog_1385_li
Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
@changelog_1378_li
@changelog_1386_li
Issue 101: The following sequence could throw the exception "Row not found when trying to delete": start a transaction, insert many rows, delete many rows, rollback. The number of rows depends on the cache size.
Issue 101: The following sequence could throw the exception "Row not found when trying to delete": start a transaction, insert many rows, delete many rows, rollback. The number of rows depends on the cache size.
@changelog_1379_li
@changelog_1387_li
The stack trace of very common exceptions is no longer written to the .trace.db file by default.
The stack trace of very common exceptions is no longer written to the .trace.db file by default.
@changelog_1380_li
@changelog_1388_li
An optimization for OR is implemented, but disabled by default. Expressions of the type X=1 OR X=2 are converted to X IN(1, 2). To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver.
An optimization for OR is implemented, but disabled by default. Expressions of the type X=1 OR X=2 are converted to X IN(1, 2). To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver.
@changelog_1381_li
@changelog_1389_li
An optimization for IN(..) and IN(SELECT...) is implemented, but disabled by default. To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver. If enabled, this overrides h2.optimizeIn and h2.optimizeInJoin. Unlike now, this optimization will also speed up updates and deletes.
An optimization for IN(..) and IN(SELECT...) is implemented, but disabled by default. To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver. If enabled, this overrides h2.optimizeIn and h2.optimizeInJoin. Unlike now, this optimization will also speed up updates and deletes.
# Since version 1.2.140 it is possible to let the old h2 classes (v 1.2.128) connect to the database. The automatic upgrade .jar file must be present, and the url must contain NO_UPGRADE=TRUE.
@advanced_1348_h2
#Limits and Limitations
#Limits and Limitations
@advanced_1348_p
@advanced_1349_p
# This database has the following known limitations:
# This database has the following known limitations:
@advanced_1349_li
#Database file size limits (excluding BLOB and CLOB data): With the default storage mechanism, the maximum file size is currently 256 GB for the data, and 256 GB for the index. With the page store (experimental): 4 TB or higher.
@advanced_1350_li
@advanced_1350_li
#BLOB and CLOB size limit: every CLOB or BLOB can be up to 256 GB.
#Database file size limits (excluding BLOB and CLOB data): With the default storage mechanism, the maximum file size is currently 256 GB for the data, and 256 GB for the index. With the page store (experimental): 4 TB or higher.
@advanced_1351_li
@advanced_1351_li
#The maximum file size for FAT or FAT32 file systems is 4 GB. That means when using FAT or FAT32, the limit is 4 GB for the data. This is the limitation of the file system. The database does provide a workaround for this problem, it is to use the file name prefix <code>split:</code>. In that case files are split into files of 1 GB by default. An example database URL is: <code>jdbc:h2:split:~/test</code>.
#BLOB and CLOB size limit: every CLOB or BLOB can be up to 256 GB.
@advanced_1352_li
@advanced_1352_li
#The maximum number of rows per table is 2'147'483'648.
#The maximum file size for FAT or FAT32 file systems is 4 GB. That means when using FAT or FAT32, the limit is 4 GB for the data. This is the limitation of the file system. The database does provide a workaround for this problem, it is to use the file name prefix <code>split:</code>. In that case files are split into files of 1 GB by default. An example database URL is: <code>jdbc:h2:split:~/test</code>.
@advanced_1353_li
@advanced_1353_li
#Main memory requirements: The larger the database, the more main memory is required. With the default storage mechanism, the minimum main memory required for a 12 GB database is around 240 MB. With the page store (experimental), the minimum main memory required is much lower, around 1 MB for each 8 GB database file size.
#The maximum number of rows per table is 2'147'483'648.
@advanced_1354_li
@advanced_1354_li
#Limit on the complexity of SQL statements. Statements of the following form will result in a stack overflow exception:
#Main memory requirements: The larger the database, the more main memory is required. With the version 1.1 storage mechanism, the minimum main memory required for a 12 GB database was around 240 MB. With the current page store, the minimum main memory required is much lower, around 1 MB for each 8 GB database file size.
@advanced_1355_li
@advanced_1355_li
#There is no limit for the following entities, except the memory and storage capacity: maximum identifier length (table name, column name, and so on); maximum number of tables, columns, indexes, triggers, and other database objects; maximum statement length, number of parameters per statement, tables per statement, expressions in order by, group by, having, and so on; maximum rows per query; maximum columns per table, columns per index, indexes per table, lob columns per table, and so on; maximum row length, index row length, select row length; maximum length of a varchar column, decimal column, literal in a statement.
#Limit on the complexity of SQL statements. Statements of the following form will result in a stack overflow exception:
@advanced_1356_li
@advanced_1356_li
#There is no limit for the following entities, except the memory and storage capacity: maximum identifier length (table name, column name, and so on); maximum number of tables, columns, indexes, triggers, and other database objects; maximum statement length, number of parameters per statement, tables per statement, expressions in order by, group by, having, and so on; maximum rows per query; maximum columns per table, columns per index, indexes per table, lob columns per table, and so on; maximum row length, index row length, select row length; maximum length of a varchar column, decimal column, literal in a statement.
@advanced_1357_li
#For limitations on data types, see the documentation of the respective Java data type or the data type documentation of this database.
#For limitations on data types, see the documentation of the respective Java data type or the data type documentation of this database.
@advanced_1357_h2
@advanced_1358_h2
用語集とリンク
用語集とリンク
@advanced_1358_th
@advanced_1359_th
用語
用語
@advanced_1359_th
@advanced_1360_th
説明
説明
@advanced_1360_td
@advanced_1361_td
AES-128
AES-128
@advanced_1361_td
@advanced_1362_td
#A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/Advanced_Encryption_Standard">Wikipedia: AES</a>
#A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/Advanced_Encryption_Standard">Wikipedia: AES</a>
@advanced_1362_td
@advanced_1363_td
Birthday Paradox
Birthday Paradox
@advanced_1363_td
@advanced_1364_td
#Describes the higher than expected probability that two persons in a room have the same birthday. Also valid for randomly generated UUIDs. See also: <a href="http://en.wikipedia.org/wiki/Birthday_paradox">Wikipedia: Birthday Paradox</a>
#Describes the higher than expected probability that two persons in a room have the same birthday. Also valid for randomly generated UUIDs. See also: <a href="http://en.wikipedia.org/wiki/Birthday_paradox">Wikipedia: Birthday Paradox</a>
@advanced_1364_td
@advanced_1365_td
Digest
Digest
@advanced_1365_td
@advanced_1366_td
#Protocol to protect a password (but not to protect data). See also: <a href="http://www.faqs.org/rfcs/rfc2617.html">RFC 2617: HTTP Digest Access Authentication</a>
#Protocol to protect a password (but not to protect data). See also: <a href="http://www.faqs.org/rfcs/rfc2617.html">RFC 2617: HTTP Digest Access Authentication</a>
@advanced_1366_td
@advanced_1367_td
GCJ
GCJ
@advanced_1367_td
@advanced_1368_td
#Compiler for Java. <a href="http://gcc.gnu.org/java">GNU Compiler for the Java</a> and <a href="http://www.dobysoft.com/products/nativej">NativeJ (commercial)</a>
#Compiler for Java. <a href="http://gcc.gnu.org/java">GNU Compiler for the Java</a> and <a href="http://www.dobysoft.com/products/nativej">NativeJ (commercial)</a>
@advanced_1368_td
@advanced_1369_td
HTTPS
HTTPS
@advanced_1369_td
@advanced_1370_td
#A protocol to provide security to HTTP connections. See also: <a href="http://www.ietf.org/rfc/rfc2818.txt">RFC 2818: HTTP Over TLS</a>
#A protocol to provide security to HTTP connections. See also: <a href="http://www.ietf.org/rfc/rfc2818.txt">RFC 2818: HTTP Over TLS</a>
@advanced_1370_td
@advanced_1371_td
Modes of Operation
Modes of Operation
@advanced_1371_a
@advanced_1372_a
#Wikipedia: Block cipher modes of operation
#Wikipedia: Block cipher modes of operation
@advanced_1372_td
@advanced_1373_td
Salt
Salt
@advanced_1373_td
@advanced_1374_td
#Random number to increase the security of passwords. See also: <a href="http://en.wikipedia.org/wiki/Key_derivation_function">Wikipedia: Key derivation function</a>
#Random number to increase the security of passwords. See also: <a href="http://en.wikipedia.org/wiki/Key_derivation_function">Wikipedia: Key derivation function</a>
#A security vulnerability where an application embeds SQL statements or expressions in user input. See also: <a href="http://en.wikipedia.org/wiki/SQL_injection">Wikipedia: SQL Injection</a>
#A security vulnerability where an application embeds SQL statements or expressions in user input. See also: <a href="http://en.wikipedia.org/wiki/SQL_injection">Wikipedia: SQL Injection</a>
@advanced_1378_td
@advanced_1379_td
Watermark Attack (透かし攻撃)
Watermark Attack (透かし攻撃)
@advanced_1379_td
@advanced_1380_td
#Security problem of certain encryption programs where the existence of certain data can be proven without decrypting. For more information, search in the internet for 'watermark attack cryptoloop'
#Security problem of certain encryption programs where the existence of certain data can be proven without decrypting. For more information, search in the internet for 'watermark attack cryptoloop'
@advanced_1380_td
@advanced_1381_td
SSL/TLS
SSL/TLS
@advanced_1381_td
@advanced_1382_td
#Secure Sockets Layer / Transport Layer Security. See also: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a>
#Secure Sockets Layer / Transport Layer Security. See also: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a>
@advanced_1382_td
@advanced_1383_td
XTEA
XTEA
@advanced_1383_td
@advanced_1384_td
#A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/XTEA">Wikipedia: XTEA</a>
#A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/XTEA">Wikipedia: XTEA</a>
@build_1000_h1
@build_1000_h1
...
@@ -1243,199 +1246,202 @@ XTEA
...
@@ -1243,199 +1246,202 @@ XTEA
@build_1030_p
@build_1030_p
# You will get a list of targets. If you want to build the <code>jar</code> file, execute (Windows):
# You will get a list of targets. If you want to build the <code>jar</code> file, execute (Windows):
@build_1031_h3
@build_1031_p
# To run the build tool in shell mode, use the command line option <code>-</code> as in <code>./build.sh -</code>.
@build_1032_h3
#Switching the Source Code
#Switching the Source Code
@build_1032_p
@build_1033_p
# By default the source code uses Java 1.5 features, however Java 1.6 is supported as well. To switch the source code to the installed version of Java, run:
# By default the source code uses Java 1.6 features, however Java 1.5 is supported as well. To switch the source code to the installed version of Java, run:
@build_1033_h2
@build_1034_h2
#Build Targets
#Build Targets
@build_1034_p
@build_1035_p
# The build system can generate smaller jar files as well. The following targets are currently supported:
# The build system can generate smaller jar files as well. The following targets are currently supported:
@build_1035_code
@build_1036_code
#jarClient
#jarClient
@build_1036_li
@build_1037_li
# creates the file <code>h2client.jar</code>. This only contains the JDBC client.
# creates the file <code>h2client.jar</code>. This only contains the JDBC client.
@build_1037_code
@build_1038_code
#jarSmall
#jarSmall
@build_1038_li
@build_1039_li
# creates the file <code>h2small.jar</code>. This only contains the embedded database. Debug information is disabled.
# creates the file <code>h2small.jar</code>. This only contains the embedded database. Debug information is disabled.
@build_1039_code
@build_1040_code
#jarJaqu
#jarJaqu
@build_1040_li
@build_1041_li
# creates the file <code>h2jaqu.jar</code>. This only contains the JaQu (Java Query) implementation. All other jar files do not include JaQu.
# creates the file <code>h2jaqu.jar</code>. This only contains the JaQu (Java Query) implementation. All other jar files do not include JaQu.
@build_1041_code
@build_1042_code
#javadocImpl
#javadocImpl
@build_1042_li
@build_1043_li
# creates the Javadocs of the implementation.
# creates the Javadocs of the implementation.
@build_1043_p
@build_1044_p
# To create the file <code>h2client.jar</code>, go to the directory <code>h2</code> and execute the following command:
# To create the file <code>h2client.jar</code>, go to the directory <code>h2</code> and execute the following command:
@build_1044_h2
@build_1045_h2
Maven 2 の利用
Maven 2 の利用
@build_1045_h3
@build_1046_h3
Centralリポジトリの利用
Centralリポジトリの利用
@build_1046_p
@build_1047_p
# You can include the database in your Maven 2 project as a dependency. Example:
# You can include the database in your Maven 2 project as a dependency. Example:
@build_1047_p
@build_1048_p
# New versions of this database are first uploaded to http://hsql.sourceforge.net/m2-repo/ and then automatically synchronized with the main Maven repository; however after a new release it may take a few hours before they are available there.
# New versions of this database are first uploaded to http://hsql.sourceforge.net/m2-repo/ and then automatically synchronized with the main Maven repository; however after a new release it may take a few hours before they are available there.
@build_1048_h3
@build_1049_h3
スナップショットバージョンの利用
スナップショットバージョンの利用
@build_1049_p
@build_1050_p
# To build a <code>h2-*-SNAPSHOT.jar</code> file and upload it the to the local Maven 2 repository, execute the following command:
# To build a <code>h2-*-SNAPSHOT.jar</code> file and upload it the to the local Maven 2 repository, execute the following command:
@build_1050_p
@build_1051_p
# Afterwards, you can include the database in your Maven 2 project as a dependency:
# Afterwards, you can include the database in your Maven 2 project as a dependency:
@build_1051_h2
@build_1052_h2
#Translating
#Translating
@build_1052_p
@build_1053_p
# The translation of this software is split into the following parts:
# The translation of this software is split into the following parts:
# To translate the H2 Console, start it and select Preferences / Translate. After you are done, send the translated <code>*.prop</code> file to the Google Group. The web site is currently translated using Google.
# To translate the H2 Console, start it and select Preferences / Translate. After you are done, send the translated <code>*.prop</code> file to the Google Group. The web site is currently translated using Google.
@build_1056_h2
@build_1057_h2
#Providing Patches
#Providing Patches
@build_1057_p
@build_1058_p
# If you like to provide patches, please consider the following guidelines to simplify merging them:
# If you like to provide patches, please consider the following guidelines to simplify merging them:
@build_1058_li
@build_1059_li
#Only use Java 1.5 features (do not use Java 1.6) (see <a href="#environment">Environment</a>).
#Only use Java 1.5 features (do not use Java 1.6) (see <a href="#environment">Environment</a>).
@build_1059_li
@build_1060_li
#Follow the coding style used in the project, and use Checkstyle (see above) to verify. For example, do not use tabs (use spaces instead). The checkstyle configuration is in <code>src/installer/checkstyle.xml</code>.
#Follow the coding style used in the project, and use Checkstyle (see above) to verify. For example, do not use tabs (use spaces instead). The checkstyle configuration is in <code>src/installer/checkstyle.xml</code>.
@build_1060_li
@build_1061_li
#A template of the Eclipse settings are in <code>src/installer/eclipse.settings/*</code>. If you want to use them, you need to copy them to the <code>.settings</code> directory. The formatting options (<code>eclipseCodeStyle</code>) are also included.
#A template of the Eclipse settings are in <code>src/installer/eclipse.settings/*</code>. If you want to use them, you need to copy them to the <code>.settings</code> directory. The formatting options (<code>eclipseCodeStyle</code>) are also included.
@build_1061_li
@build_1062_li
#Please provide test cases and integrate them into the test suite. For Java level tests, see <code>src/test/org/h2/test/TestAll.java</code>. For SQL level tests, see <code>src/test/org/h2/test/test.in.txt</code> or <code>testSimple.in.txt</code>.
#Please provide test cases and integrate them into the test suite. For Java level tests, see <code>src/test/org/h2/test/TestAll.java</code>. For SQL level tests, see <code>src/test/org/h2/test/test.in.txt</code> or <code>testSimple.in.txt</code>.
@build_1062_li
@build_1063_li
#The test cases should cover at least 90% of the changed and new code; use a code coverage tool to verify that (see above). or use the build target <code>coverage</code>.
#The test cases should cover at least 90% of the changed and new code; use a code coverage tool to verify that (see above). or use the build target <code>coverage</code>.
@build_1063_li
@build_1064_li
#Verify that you did not break other features: run the test cases by executing <code>build test</code>.
#Verify that you did not break other features: run the test cases by executing <code>build test</code>.
@build_1064_li
@build_1065_li
#Provide end user documentation if required (<code>src/docsrc/html/*</code>).
#Provide end user documentation if required (<code>src/docsrc/html/*</code>).
@build_1065_li
@build_1066_li
#Document grammar changes in <code>src/docsrc/help/help.csv</code>
#Document grammar changes in <code>src/docsrc/help/help.csv</code>
@build_1066_li
@build_1067_li
#Provide a change log entry (<code>src/docsrc/html/changelog.html</code>).
#Provide a change log entry (<code>src/docsrc/html/changelog.html</code>).
@build_1067_li
@build_1068_li
#Verify the spelling using <code>build spellcheck</code>. If required add the new words to <code>src/tools/org/h2/build/doc/dictionary.txt</code>.
#Verify the spelling using <code>build spellcheck</code>. If required add the new words to <code>src/tools/org/h2/build/doc/dictionary.txt</code>.
@build_1068_li
@build_1069_li
#Run <code>src/installer/buildRelease</code> to find and fix formatting errors.
#Run <code>src/installer/buildRelease</code> to find and fix formatting errors.
@build_1069_li
@build_1070_li
#Verify the formatting using <code>build docs</code> and <code>build javadoc</code>.
#Verify the formatting using <code>build docs</code> and <code>build javadoc</code>.
@build_1070_li
@build_1071_li
#Submit patches as <code>.patch</code> files (compressed if big). To create a patch using Eclipse, use Team / Create Patch.
#Submit patches as <code>.patch</code> files (compressed if big). To create a patch using Eclipse, use Team / Create Patch.
@build_1071_p
@build_1072_p
# For legal reasons, patches need to be public in the form of an email to the <a href="http://groups.google.com/group/h2-database">group</a>, or in the form of an <a href="http://code.google.com/p/h2database/issues/list">issue report or attachment</a>. Significant contributions need to include the following statement:
# For legal reasons, patches need to be public in the form of an email to the <a href="http://groups.google.com/group/h2-database">group</a>, or in the form of an <a href="http://code.google.com/p/h2database/issues/list">issue report or attachment</a>. Significant contributions need to include the following statement:
@build_1072_p
@build_1073_p
# "I wrote the code, it's mine, and I'm contributing it to H2 for distribution multiple-licensed under the H2 License, version 1.0, and under the Eclipse Public License, version 1.0 (http://h2database.com/html/license.html)."
# "I wrote the code, it's mine, and I'm contributing it to H2 for distribution multiple-licensed under the H2 License, version 1.0, and under the Eclipse Public License, version 1.0 (http://h2database.com/html/license.html)."
@build_1073_h2
@build_1074_h2
#Reporting Problems or Requests
#Reporting Problems or Requests
@build_1074_p
@build_1075_p
# Please consider the following checklist if you have a question, want to report a problem, or if you have a feature request:
# Please consider the following checklist if you have a question, want to report a problem, or if you have a feature request:
@build_1075_li
@build_1076_li
#Feature requests are always welcome, even if the feature is already on the <a href="roadmap.html">roadmap</a>. Your mail will help prioritize feature requests. If you urgently need a feature, consider <a href="#providing_patches">providing a patch</a>.
#Feature requests are always welcome, even if the feature is already on the <a href="roadmap.html">roadmap</a>. Your mail will help prioritize feature requests. If you urgently need a feature, consider <a href="#providing_patches">providing a patch</a>.
@build_1076_li
@build_1077_li
#Before posting problems, check the <a href="faq.html">FAQ</a> and do a <a href="http://google.com">Google search</a>.
#Before posting problems, check the <a href="faq.html">FAQ</a> and do a <a href="http://google.com">Google search</a>.
@build_1077_li
@build_1078_li
#When got an unexpected exception, please try the <a href="sourceError.html">Error Analyzer tool</a>. If this doesn't help, please report the problem, including the complete error message and stack trace, and the root cause stack trace(s).
#When got an unexpected exception, please try the <a href="sourceError.html">Error Analyzer tool</a>. If this doesn't help, please report the problem, including the complete error message and stack trace, and the root cause stack trace(s).
@build_1078_li
@build_1079_li
#When sending source code, please use a public web clipboard such as <a href="http://pastebin.com">Pastebin</a>, <a href="http://cl1p.net">Cl1p</a>, or <a href="http://www.mysticpaste.com/new">Mystic Paste</a> to avoid formatting problems. Please keep test cases as simple and short as possible, but so that the problem can still be reproduced. As a template, use: <a href="http://h2database.googlecode.com/svn/trunk/h2/src/test/org/h2/samples/HelloWorld.java">HelloWorld.java</a>. Method that simply call other methods should be avoided, as well as unnecessary exception handling. Please use the JDBC API and no external tools or libraries. The test should include all required initialization code, and should be started with the main method.
#When sending source code, please use a public web clipboard such as <a href="http://pastebin.com">Pastebin</a>, <a href="http://cl1p.net">Cl1p</a>, or <a href="http://www.mysticpaste.com/new">Mystic Paste</a> to avoid formatting problems. Please keep test cases as simple and short as possible, but so that the problem can still be reproduced. As a template, use: <a href="http://h2database.googlecode.com/svn/trunk/h2/src/test/org/h2/samples/HelloWorld.java">HelloWorld.java</a>. Method that simply call other methods should be avoided, as well as unnecessary exception handling. Please use the JDBC API and no external tools or libraries. The test should include all required initialization code, and should be started with the main method.
@build_1079_li
@build_1080_li
#For large attachments, use a public temporary storage such as <a href="http://rapidshare.com">Rapidshare</a>.
#For large attachments, use a public temporary storage such as <a href="http://rapidshare.com">Rapidshare</a>.
@build_1080_li
@build_1081_li
#Google Group versus issue tracking: Use the <a href="http://groups.google.com/group/h2-database">Google Group</a> for questions or if you are not sure it's a bug. If you are sure it's a bug, you can create an <a href="http://code.google.com/p/h2database/issues/list">issue</a>, but you don't need to (sending an email to the group is enough). Please note that only few people monitor the issue tracking system.
#Google Group versus issue tracking: Use the <a href="http://groups.google.com/group/h2-database">Google Group</a> for questions or if you are not sure it's a bug. If you are sure it's a bug, you can create an <a href="http://code.google.com/p/h2database/issues/list">issue</a>, but you don't need to (sending an email to the group is enough). Please note that only few people monitor the issue tracking system.
@build_1081_li
@build_1082_li
#For out-of-memory problems, please analyze the problem yourself first, for example using the command line option <code>-XX:+HeapDumpOnOutOfMemoryError</code> and a memory analysis tool such as the <a href="http://www.eclipse.org/mat">Eclipse Memory Analyzer (MAT)</a>.
#For out-of-memory problems, please analyze the problem yourself first, for example using the command line option <code>-XX:+HeapDumpOnOutOfMemoryError</code> and a memory analysis tool such as the <a href="http://www.eclipse.org/mat">Eclipse Memory Analyzer (MAT)</a>.
@build_1082_li
@build_1083_li
#It may take a few days to get an answers. Please do not double post.
#It may take a few days to get an answers. Please do not double post.
@build_1083_h2
@build_1084_h2
#Automated Build
#Automated Build
@build_1084_p
@build_1085_p
# This build process is automated and runs regularly. The build process includes running the tests and code coverage, using the command line <code>./build.sh clean jar coverage -Dh2.ftpPassword=... uploadBuild</code>. The last results are available here:
# This build process is automated and runs regularly. The build process includes running the tests and code coverage, using the command line <code>./build.sh clean jar coverage -Dh2.ftpPassword=... uploadBuild</code>. The last results are available here:
@build_1085_a
@build_1086_a
#Test Output
#Test Output
@build_1086_a
@build_1087_a
#Code Coverage Summary
#Code Coverage Summary
@build_1087_a
@build_1088_a
#Code Coverage Details (download, 1.3 MB)
#Code Coverage Details (download, 1.3 MB)
@build_1088_a
@build_1089_a
#Build Newsfeed
#Build Newsfeed
@build_1089_a
@build_1090_a
#Latest Jar File (download, 1 MB)
#Latest Jar File (download, 1 MB)
@build_1090_h2
@build_1091_h2
#Generating Railroad Diagrams
#Generating Railroad Diagrams
@build_1091_p
@build_1092_p
# The railroad diagrams are HTML, formatted as nested tables. The diagrams are generated as follows:
# The railroad diagrams are HTML, formatted as nested tables. The diagrams are generated as follows:
@build_1092_li
@build_1093_li
#The BNF parser (<code>org.h2.bnf.Bnf</code>) reads and parses the BNF from the file <code>help.csv</code>.
#The BNF parser (<code>org.h2.bnf.Bnf</code>) reads and parses the BNF from the file <code>help.csv</code>.
@build_1093_li
@build_1094_li
#The page parser (<code>org.h2.server.web.PageParser</code>) reads the template HTML file and fills in the diagrams.
#The page parser (<code>org.h2.server.web.PageParser</code>) reads the template HTML file and fills in the diagrams.
@build_1094_li
@build_1095_li
#The rail images (one straight, four junctions, two turns) are generated using a simple Java application.
#The rail images (one straight, four junctions, two turns) are generated using a simple Java application.
@build_1095_p
@build_1096_p
# To generate railroad diagrams for other grammars, see the package <code>org.h2.jcr</code>. This package is used to generate the SQL-2 railroad diagrams for the JCR 2.0 specification.
# To generate railroad diagrams for other grammars, see the package <code>org.h2.jcr</code>. This package is used to generate the SQL-2 railroad diagrams for the JCR 2.0 specification.
@changelog_1000_h1
@changelog_1000_h1
...
@@ -1445,1143 +1451,1167 @@ Centralリポジトリの利用
...
@@ -1445,1143 +1451,1167 @@ Centralリポジトリの利用
#Next Version (unreleased)
#Next Version (unreleased)
@changelog_1002_li
@changelog_1002_li
#-
#The build tool now supports (minimalistic) shell mode, started using ./build.sh -
@changelog_1003_h2
@changelog_1003_li
#Version 1.2.139 (2010-07-10)
#IS NULL comparison with nested queries and linked tables did not work. Example: select * from (select x from test) where x is null.
@changelog_1004_li
@changelog_1004_li
#There was a bug in the internal IntIntHashMap. There were now known side effects however.
#Support for null-safe equals. This includes the ANSI SQL standard syntax A IS [NOT] DISTINCT FROM B as well as the shorter A IS [NOT] B.
@changelog_1005_li
@changelog_1005_li
#ANALYZE now uses less memory.
#Primary key violations threw a strange exception message when using a single column INT or BIGINT key.
@changelog_1006_li
@changelog_1006_li
#Memory mapped file system: improved error messages if there is a problem.
#EXPLAIN ANALYZE now also lists the number of pages read from the file.
@changelog_1007_li
@changelog_1007_li
#The Lucene fulltext search did not work well when using special file systems such as split or nioMapped.
#Memory mapped files: There was a bug in version 1.2.139 so that memory mapped files could only be used together with split, for example: split:nioMapped: - the problem is now solved. It is still a good idea to use split:nioMapped: to work around the 2 GB limitation of memory mapped files.
@changelog_1008_li
@changelog_1008_li
#The memory mapped file system (nioMapped: file prefix) couldn't seek past the file length.
#Memory mapped files: the system property h2.nioCleanerHack is now disabled by default because it was not always working as expected. Now System.gc() is used in a loop until the buffer is garbage collected. This of course is also not a nice solution, but the only one known to work. See also http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4724038
@changelog_1009_li
@changelog_1009_li
#Some file system operations did not work with stacked file systems (for example split and nioMapped). This also affected the DeleteDbFiles tool.
#If an old 1.1 database file version is found on connect, it is now possible to let the old h2 classes (v 1.2.128) connect to the database. The automatic upgrade .jar file must be present, and the url must contain NO_UPGRADE=TRUE
@changelog_1010_li
@changelog_1010_li
#The automatic upgrade temporary script file is now encrypted.
@changelog_1011_h2
#Version 1.2.139 (2010-07-10)
@changelog_1012_li
#There was a bug in the internal IntIntHashMap. There were now known side effects however.
@changelog_1013_li
#ANALYZE now uses less memory.
@changelog_1014_li
#Memory mapped file system: improved error messages if there is a problem.
@changelog_1015_li
#The Lucene fulltext search did not work well when using special file systems such as split or nioMapped.
@changelog_1016_li
#The memory mapped file system (nioMapped: file prefix) couldn't seek past the file length.
@changelog_1017_li
#Some file system operations did not work with stacked file systems (for example split and nioMapped). This also affected the DeleteDbFiles tool.
@changelog_1018_li
#New experimental query cache. The cache is only used if the SQL statement and all parameters match. Each session has it's own cache with the given size. Only the last returned result per query is cached. Only SELECT statements are cached (excluding UNION and FOR UPDATE statements). This works for both statements and prepared statement. To enable, set the system property h2.commandCacheSize to a value larger than 0. There is currently no plan to enable this option by default in future versions.
#New experimental query cache. The cache is only used if the SQL statement and all parameters match. Each session has it's own cache with the given size. Only the last returned result per query is cached. Only SELECT statements are cached (excluding UNION and FOR UPDATE statements). This works for both statements and prepared statement. To enable, set the system property h2.commandCacheSize to a value larger than 0. There is currently no plan to enable this option by default in future versions.
@changelog_1011_li
@changelog_1019_li
#Conditions with many OR operations could throw an UnsupportedOperationException if h2.optimizeOr was enabled.
#Conditions with many OR operations could throw an UnsupportedOperationException if h2.optimizeOr was enabled.
@changelog_1012_li
@changelog_1020_li
#XA connection: after transaction commit or rollback, the physical connection is set into autocommit mode.
#XA connection: after transaction commit or rollback, the physical connection is set into autocommit mode.
@changelog_1013_li
@changelog_1021_li
#MULTI_THREADED did not work correctly and could throw the exception "try to add a record twice" for larger databases because cache access was not correctly synchronized.
#MULTI_THREADED did not work correctly and could throw the exception "try to add a record twice" for larger databases because cache access was not correctly synchronized.
@changelog_1014_li
@changelog_1022_li
#Automatic database upgrade from non page store is now possible. If the classes from the h2mig_pagestore_addon.jar file are in the classpath, the database will be converted to the current page store format automatically. The file can be found here: <a href="http://h2database.com/h2mig_pagestore_addon.jar">http://h2database.com/h2mig_pagestore_addon.jar</a>
#Automatic database upgrade from non page store is now possible. If the classes from the h2mig_pagestore_addon.jar file are in the classpath, the database will be converted to the current page store format automatically. The file can be found here: <a href="http://h2database.com/h2mig_pagestore_addon.jar">http://h2database.com/h2mig_pagestore_addon.jar</a>
@changelog_1015_li
@changelog_1023_li
#The MultiDimension tools was extended with a few helper methods. The API was unified a bit.
#The MultiDimension tools was extended with a few helper methods. The API was unified a bit.
@changelog_1016_li
@changelog_1024_li
#ODBC: MS Access could not link to a table with unique index or primary key. To solve this problem, index meta data is currently disabled for ODBC. When using the new H2 version to access a database over ODBC, the PostgreSQL catalog is automatically upgraded. Using a database with an upgraded PostgreSQL catalog with an older version of H2 is still possible, but not over ODBC.
#ODBC: MS Access could not link to a table with unique index or primary key. To solve this problem, index meta data is currently disabled for ODBC. When using the new H2 version to access a database over ODBC, the PostgreSQL catalog is automatically upgraded. Using a database with an upgraded PostgreSQL catalog with an older version of H2 is still possible, but not over ODBC.
@changelog_1017_li
@changelog_1025_li
#ODBC: MS Access could not link to a table with a name containing '_'.
#ODBC: MS Access could not link to a table with a name containing '_'.
@changelog_1018_li
@changelog_1026_li
#ODBC: additional connection settings can now be added to the database name. Example: ~/test;cipher=xtea. Therefore, encrypted databases are supported.
#ODBC: additional connection settings can now be added to the database name. Example: ~/test;cipher=xtea. Therefore, encrypted databases are supported.
@changelog_1019_li
@changelog_1027_li
#Local temporary tables can now be created without having to commit a transaction using CREATE LOCAL TEMPORARY TABLE TEMP(ID INT PRIMARY KEY) TRANSACTIONAL.
#Local temporary tables can now be created without having to commit a transaction using CREATE LOCAL TEMPORARY TABLE TEMP(ID INT PRIMARY KEY) TRANSACTIONAL.
@changelog_1020_li
@changelog_1028_li
#New system property h2.dropRestrict (default false) to change the default action for DROP TABLE and DROP VIEW (false for CASCADE, true for RESTRICT). The plan is to enable this property by default in version 1.3.x.
#New system property h2.dropRestrict (default false) to change the default action for DROP TABLE and DROP VIEW (false for CASCADE, true for RESTRICT). The plan is to enable this property by default in version 1.3.x.
@changelog_1021_li
@changelog_1029_li
#DROP TABLE now also supports CASCADE (still the default) and RESTRICT.
#DROP TABLE now also supports CASCADE (still the default) and RESTRICT.
@changelog_1022_li
@changelog_1030_li
#The wrong exception was thrown when trying to connect to a server if the server was not running.
#The wrong exception was thrown when trying to connect to a server if the server was not running.
@changelog_1023_li
@changelog_1031_li
#UNION queries where the first query contains a nested query were parsed incorrectly. Example: "select 1 from (select 2 from dual) union select 3 from dual" was parsed as "select 1 from ((select 2 from dual) union select 3 from dual)". Fixed.
#UNION queries where the first query contains a nested query were parsed incorrectly. Example: "select 1 from (select 2 from dual) union select 3 from dual" was parsed as "select 1 from ((select 2 from dual) union select 3 from dual)". Fixed.
@changelog_1024_li
@changelog_1032_li
#Support ALTER SCHEMA name RENAME TO newName (rename schema). (patch from Kerry Sainsbury)
#Support ALTER SCHEMA name RENAME TO newName (rename schema). (patch from Kerry Sainsbury)
@changelog_1025_h2
@changelog_1033_h2
#Version 1.2.138 (2010-06-27)
#Version 1.2.138 (2010-06-27)
@changelog_1026_li
@changelog_1034_li
#Referential integrity: it was not allowed to delete a row with NULL in the parent table, if there was a row with NULL in the child table.
#Referential integrity: it was not allowed to delete a row with NULL in the parent table, if there was a row with NULL in the child table.
@changelog_1027_li
@changelog_1035_li
#Experimental feature to support case sensitive catalog names and database names using the DATABASE() method. To use this feature, set the system property h2.databaseToUpper to false. The plan is to set the property to false by default in version 1.3.x. Issue 204 - thanks to Sylvain Cuaz (ILM Informatique) for the patch.
#Experimental feature to support case sensitive catalog names and database names using the DATABASE() method. To use this feature, set the system property h2.databaseToUpper to false. The plan is to set the property to false by default in version 1.3.x. Issue 204 - thanks to Sylvain Cuaz (ILM Informatique) for the patch.
@changelog_1028_li
@changelog_1036_li
#Experimental feature to support nested joins. To enable, set the system property h2.nestedJoins to true. If enabled, nested joins and right outer joins should work as expected (issues 145, 177, and 203). The plan is to enable this feature by default in version 1.3.x.
#Experimental feature to support nested joins. To enable, set the system property h2.nestedJoins to true. If enabled, nested joins and right outer joins should work as expected (issues 145, 177, and 203). The plan is to enable this feature by default in version 1.3.x.
#When creating functions within a schema, those functions could not be used in views, nested queries, and constraints. Fixed.
#When creating functions within a schema, those functions could not be used in views, nested queries, and constraints. Fixed.
@changelog_1031_li
@changelog_1039_li
#The benchmarks have been run using recent database versions.
#The benchmarks have been run using recent database versions.
@changelog_1032_li
@changelog_1040_li
#Version 1.2.137 could still not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision).
#Version 1.2.137 could still not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision).
@changelog_1033_li
@changelog_1041_li
#Cluster: non-admin users could not connect when one of the cluster node was stopped. Issue 206.
#Cluster: non-admin users could not connect when one of the cluster node was stopped. Issue 206.
@changelog_1034_li
@changelog_1042_li
#DROP VIEW now supports the CASCADE and RESTRICT clauses (patch from Kerry Sainsbury)
#DROP VIEW now supports the CASCADE and RESTRICT clauses (patch from Kerry Sainsbury)
@changelog_1035_li
@changelog_1043_li
#CREATE VIEW now supports the OR REPLACE clause (patch from Kerry Sainsbury)
#CREATE VIEW now supports the OR REPLACE clause (patch from Kerry Sainsbury)
@changelog_1036_li
@changelog_1044_li
#Build tool: ability to only run one test using the -Dtest=className setting. eg: build -Dtest=org.h2.test.db.TestViewDropView test (patch from Kerry Sainsbury).
#Build tool: ability to only run one test using the -Dtest=className setting. eg: build -Dtest=org.h2.test.db.TestViewDropView test (patch from Kerry Sainsbury).
@changelog_1037_h2
@changelog_1045_h2
#Version 1.2.137 (2010-06-06)
#Version 1.2.137 (2010-06-06)
@changelog_1038_li
@changelog_1046_li
#Statements with a nested query and a condition that was always NULL threw an IndexOutOfBoundsException. Example: select * from (select null as x) where x=1
#Statements with a nested query and a condition that was always NULL threw an IndexOutOfBoundsException. Example: select * from (select null as x) where x=1
@changelog_1039_li
@changelog_1047_li
#The changes that were made to support large transactions also fixed a bug with large transactions (when the undo log file size is larger than 2 GB).
#The changes that were made to support large transactions also fixed a bug with large transactions (when the undo log file size is larger than 2 GB).
@changelog_1040_li
@changelog_1048_li
#Experimental feature to support very large transactions (except when using MVCC). To enable, set the system property h2.largeTransactions to true. If enabled, changes to tables without a primary key can be buffered to disk. The plan is to enable this feature by default in version 1.3.x.
#Experimental feature to support very large transactions (except when using MVCC). To enable, set the system property h2.largeTransactions to true. If enabled, changes to tables without a primary key can be buffered to disk. The plan is to enable this feature by default in version 1.3.x.
@changelog_1041_li
@changelog_1049_li
#H2 Console: editing result sets is now also working for database other than H2, if they do support updatable result sets. Add "@edit" before the query. Only limited testing has been done on this feature, some data types may not work (please provide feedback if you find issues).
#H2 Console: editing result sets is now also working for database other than H2, if they do support updatable result sets. Add "@edit" before the query. Only limited testing has been done on this feature, some data types may not work (please provide feedback if you find issues).
@changelog_1042_li
@changelog_1050_li
#Cluster: an open transaction was committed when a cluster node was stopped (because disabling the cluster executes SET CLUSTER '', which committed the transaction). Transaction are no longer committed when calling SET CLUSTER. Issue 199.
#Cluster: an open transaction was committed when a cluster node was stopped (because disabling the cluster executes SET CLUSTER '', which committed the transaction). Transaction are no longer committed when calling SET CLUSTER. Issue 199.
@changelog_1043_li
@changelog_1051_li
#Cluster: non-admin users couldn't connect to the cluster and couldn't disable the cluster. Issue 201.
#Cluster: non-admin users couldn't connect to the cluster and couldn't disable the cluster. Issue 201.
@changelog_1044_li
@changelog_1052_li
#Cluster: NEXTVAL('sequence') was only called on one cluster node, therefore sequence values could get out of sync.
#Cluster: NEXTVAL('sequence') was only called on one cluster node, therefore sequence values could get out of sync.
@changelog_1045_li
@changelog_1053_li
#Version 1.2.136 could not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision). A workaround has been implemented.
#Version 1.2.136 could not be converted to Java 1.4 (because the Retrotranslator doesn't support BigDecimal.precision). A workaround has been implemented.
@changelog_1046_li
@changelog_1054_li
#The error code of IO exceptions in CSV functions was incorrect.
#The error code of IO exceptions in CSV functions was incorrect.
@changelog_1047_li
@changelog_1055_li
#The TriggerPassData example now uses a prefix (the database name).
#The TriggerPassData example now uses a prefix (the database name).
@changelog_1048_li
@changelog_1056_li
#The wrong exception was thrown when trying to reference a table that doesn't support references such as a table in the information schema.
#The wrong exception was thrown when trying to reference a table that doesn't support references such as a table in the information schema.
@changelog_1049_li
@changelog_1057_li
#Server.shutdownTcpServer can now stop all TCP servers on this JVM.
#Server.shutdownTcpServer can now stop all TCP servers on this JVM.
@changelog_1050_li
@changelog_1058_li
#JdbcConnectionPool: the default connection timeout is now 30 seconds (it used to be 5 minutes).
#JdbcConnectionPool: the default connection timeout is now 30 seconds (it used to be 5 minutes).
@changelog_1051_li
@changelog_1059_li
#LOB storage: LOBs added with "h2.lobInDatabase" enabled couldn't be read later with this option disabled.
#LOB storage: LOBs added with "h2.lobInDatabase" enabled couldn't be read later with this option disabled.
@changelog_1052_h2
@changelog_1060_h2
#Version 1.2.136 (2010-05-24)
#Version 1.2.136 (2010-05-24)
@changelog_1053_li
@changelog_1061_li
#When using ORDER BY and there are both ascending and descending indexes, the database used the first index even when the second one could be used for sorting.
#When using ORDER BY and there are both ascending and descending indexes, the database used the first index even when the second one could be used for sorting.
@changelog_1054_li
@changelog_1062_li
#Conditions of the form columnName IS NULL now use an index. To disable this feature, set the system property h2.optimizeIsNull to false.
#Conditions of the form columnName IS NULL now use an index. To disable this feature, set the system property h2.optimizeIsNull to false.
@changelog_1055_li
@changelog_1063_li
#H2 Console: when the settings were not stored yet (for example when running for the first time), the last recently used settings were not stored. A workaround was to create the file ".h2.server.properties" manually in the current user home directory, with the contents: webAllowOthers=false, webPort=8082, webSSL=false, 0=Generic H2 (Embedded)|org.h2.Driver|jdbc\:h2\:~/test|sa (where a comma is a newline).
#H2 Console: when the settings were not stored yet (for example when running for the first time), the last recently used settings were not stored. A workaround was to create the file ".h2.server.properties" manually in the current user home directory, with the contents: webAllowOthers=false, webPort=8082, webSSL=false, 0=Generic H2 (Embedded)|org.h2.Driver|jdbc\:h2\:~/test|sa (where a comma is a newline).
@changelog_1056_li
@changelog_1064_li
#The source code is now switched to Java 6 (JDK 1.6) by default. Java 5 (JDK 1.5) is still supported, and the jar file is still compiled for Java 5.
#The source code is now switched to Java 6 (JDK 1.6) by default. Java 5 (JDK 1.5) is still supported, and the jar file is still compiled for Java 5.
@changelog_1057_li
@changelog_1065_li
#The BOM (the byte-order-mark) character 0xfeff at the beginning of the file is ignored. This is for compatibility with Microsoft Excel.
#The BOM (the byte-order-mark) character 0xfeff at the beginning of the file is ignored. This is for compatibility with Microsoft Excel.
@changelog_1058_li
@changelog_1066_li
#When opening an existing database, the cache size is set to at most half the amount of memory available for the virtual machine (Runtime.getRuntime().maxMemory()), even if the cache size setting stored in the database is larger. Setting the cache size in the database URL or explicitly using SET CACHE_SIZE overrides this value (even if larger than the physical memory).
#When opening an existing database, the cache size is set to at most half the amount of memory available for the virtual machine (Runtime.getRuntime().maxMemory()), even if the cache size setting stored in the database is larger. Setting the cache size in the database URL or explicitly using SET CACHE_SIZE overrides this value (even if larger than the physical memory).
@changelog_1059_li
@changelog_1067_li
#INFORMATION_SCHEMA.SETTINGS: the cache size is now returned in KB.
#INFORMATION_SCHEMA.SETTINGS: the cache size is now returned in KB.
@changelog_1060_li
@changelog_1068_li
#New system property h2.selectForUpdateMvcc, the default is false (the feature is disabled). When enabled, SELECT ... FOR UPDATE only locks the selected rows in the MVCC mode. Aggregate or GROUP BY queries are not allowed in this case.
#New system property h2.selectForUpdateMvcc, the default is false (the feature is disabled). When enabled, SELECT ... FOR UPDATE only locks the selected rows in the MVCC mode. Aggregate or GROUP BY queries are not allowed in this case.
@changelog_1061_li
@changelog_1069_li
#Profiler: improved message if there was no stack trace.
#Profiler: improved message if there was no stack trace.
@changelog_1062_li
@changelog_1070_li
#The H2 Console can now be used within another application, in a frame or iframe. Issue 197.
#The H2 Console can now be used within another application, in a frame or iframe. Issue 197.
@changelog_1063_li
@changelog_1071_li
#Recover tool: the statistics section now includes page type counts again.
#Recover tool: the statistics section now includes page type counts again.
@changelog_1064_li
@changelog_1072_li
#Queries with multiple IN(...) conditions sometimes return the wrong results when there was a multi-column index for the column.
#Queries with multiple IN(...) conditions sometimes return the wrong results when there was a multi-column index for the column.
@changelog_1065_li
@changelog_1073_li
#Queries with IN(..., NULL) did sometimes return the wrong results when there was a index for the column.
#Queries with IN(..., NULL) did sometimes return the wrong results when there was a index for the column.
@changelog_1066_li
@changelog_1074_li
#DECIMAL: faster precision and memory usage calculations.
#DECIMAL: faster precision and memory usage calculations.
@changelog_1067_li
@changelog_1075_li
#A new class org.h2.tools.TriggerAdapter allows to use the ResultSet interface within trigger implementations.
#A new class org.h2.tools.TriggerAdapter allows to use the ResultSet interface within trigger implementations.
@changelog_1068_li
@changelog_1076_li
#A subselect which used an index could lead to wrong results. Fixed.
#A subselect which used an index could lead to wrong results. Fixed.
@changelog_1069_li
@changelog_1077_li
#Creating a cached temporary non persistent table with a primary key threw a NullPointerException.
#Creating a cached temporary non persistent table with a primary key threw a NullPointerException.
@changelog_1070_h2
@changelog_1078_h2
#Version 1.2.135 (2010-05-08)
#Version 1.2.135 (2010-05-08)
@changelog_1071_li
@changelog_1079_li
#Temporary files were not deleted when using large transactions, disabling autocommit, and closing the session without committing.
#Temporary files were not deleted when using large transactions, disabling autocommit, and closing the session without committing.
@changelog_1072_li
@changelog_1080_li
#Queries using multiple IN(..) conditions on the same table could cause repeated rows in the result set.
#Queries using multiple IN(..) conditions on the same table could cause repeated rows in the result set.
@changelog_1073_li
@changelog_1081_li
#Translation: Lubomir Grajciar translated the H2 Console as well as all error message to Slovensky. Thanks a lot!
#Translation: Lubomir Grajciar translated the H2 Console as well as all error message to Slovensky. Thanks a lot!
@changelog_1074_li
@changelog_1082_li
#There was a possible Java level deadlock when opening an uninitialized database and using a file system that also opened a database.
#There was a possible Java level deadlock when opening an uninitialized database and using a file system that also opened a database.
@changelog_1075_li
@changelog_1083_li
#When killing the process while the database was writing a checkpoint, while it was closing, or while running recovery (while removing temporary tables from a previous run), the database could become corrupt. A new test case has been implemented to ensure such problems can not occur in the future.
#When killing the process while the database was writing a checkpoint, while it was closing, or while running recovery (while removing temporary tables from a previous run), the database could become corrupt. A new test case has been implemented to ensure such problems can not occur in the future.
@changelog_1076_li
@changelog_1084_li
#File system: new method FileSystem.setReadOnly.
#File system: new method FileSystem.setReadOnly.
@changelog_1077_li
@changelog_1085_li
#The page size for new databases can now be set in the database URL using ;PAGE_SIZE=512. Currently this feature is only used to simplify testing.
#The page size for new databases can now be set in the database URL using ;PAGE_SIZE=512. Currently this feature is only used to simplify testing.
@changelog_1078_li
@changelog_1086_li
#New system property h2.functionsInSchema (default is false). If enabled, the SCRIPT statement always includes the schema name in the CREATE ALIAS statement (even if the schema is PUBLIC). This is not backward compatible with H2 versions 1.2.134 and older.
#New system property h2.functionsInSchema (default is false). If enabled, the SCRIPT statement always includes the schema name in the CREATE ALIAS statement (even if the schema is PUBLIC). This is not backward compatible with H2 versions 1.2.134 and older.
@changelog_1079_li
@changelog_1087_li
#Functions: it is no longer required to add a space after a comma in the parameter list. Example: CREATE ALIAS PARSE_INT FOR "java.lang.Integer.parseInt(java.lang.String,int)"
#Functions: it is no longer required to add a space after a comma in the parameter list. Example: CREATE ALIAS PARSE_INT FOR "java.lang.Integer.parseInt(java.lang.String,int)"
@changelog_1080_li
@changelog_1088_li
#Functions now reside within a schema, similar to sequences. If you do create such functions in schemas other than PUBLIC, then the database can not be opened with older versions of H2.
#Functions now reside within a schema, similar to sequences. If you do create such functions in schemas other than PUBLIC, then the database can not be opened with older versions of H2.
@changelog_1081_li
@changelog_1089_li
#Cluster: after a cluster node failed, the second cluster node can now be re-created and started without having to stop the first cluster node, and without having to stop running applications. To do that, append ;AUTO_RECONNECT=TRUE to the database URL.
#Cluster: after a cluster node failed, the second cluster node can now be re-created and started without having to stop the first cluster node, and without having to stop running applications. To do that, append ;AUTO_RECONNECT=TRUE to the database URL.
@changelog_1082_li
@changelog_1090_li
#Auto-reconnect: if another connection uses the database in exclusive mode then this connection will try to re-connect until the exclusive mode ends. This is important when using the cluster mode.
#Auto-reconnect: if another connection uses the database in exclusive mode then this connection will try to re-connect until the exclusive mode ends. This is important when using the cluster mode.
@changelog_1083_li
@changelog_1091_li
#SET EXCLUSIVE now supports 0 (disable), 1 (enable), and 2 (enable and close all other connections).
#SET EXCLUSIVE now supports 0 (disable), 1 (enable), and 2 (enable and close all other connections).
@changelog_1084_li
@changelog_1092_li
#Installing the H2 as a service should now work on Windows 7. The batch files now explicitly set the directory using pushd "%~dp0".
#Installing the H2 as a service should now work on Windows 7. The batch files now explicitly set the directory using pushd "%~dp0".
@changelog_1085_li
@changelog_1093_li
#Temporary tables can now be 'cached', that means indexes of temporary tables can be persisted. This enables very large temporary tables (both local and global).
#Temporary tables can now be 'cached', that means indexes of temporary tables can be persisted. This enables very large temporary tables (both local and global).
@changelog_1086_li
@changelog_1094_li
#The CreateCluster tool now sets the source database in exclusive mode before copying data to the new database.
#The CreateCluster tool now sets the source database in exclusive mode before copying data to the new database.
@changelog_1087_li
@changelog_1095_li
#The H2 Console now stream results one statement / result set at a time (using chunked transfer encoding). To disable, set the system property h2.consoleStream to false. This feature is not supported when using a servlet container.
#The H2 Console now stream results one statement / result set at a time (using chunked transfer encoding). To disable, set the system property h2.consoleStream to false. This feature is not supported when using a servlet container.
@changelog_1088_li
@changelog_1096_li
#The H2 Console did not call the CreateCluster tool with the correctly escaped parameters.
#The H2 Console did not call the CreateCluster tool with the correctly escaped parameters.
@changelog_1089_li
@changelog_1097_li
#Improved PostgreSQL compatibility for ALTER TABLE ALTER COLUMN.
#Improved PostgreSQL compatibility for ALTER TABLE ALTER COLUMN.
@changelog_1090_li
@changelog_1098_li
#Commas at the end of INSERT ... VALUES (), (), are now supported.
#Commas at the end of INSERT ... VALUES (), (), are now supported.
@changelog_1091_li
@changelog_1099_li
#The H2 Console "Start Browser" button now works even when the IP address changes while the tool runs (for example, because a wireless connection breaks, or when enabling / disabling the network connection).
#The H2 Console "Start Browser" button now works even when the IP address changes while the tool runs (for example, because a wireless connection breaks, or when enabling / disabling the network connection).
@changelog_1092_li
@changelog_1100_li
#When casting from float or double to BigDecimal, the result was sometimes unexpected, because "new BigDecimal(double val)" was used. Now "BigDecimal.valueOf(double val)" and "new BigDecimal(Float.toString(f))" are used. But it is still not recommended to use float or double for currency values (see data type documentation).
#When casting from float or double to BigDecimal, the result was sometimes unexpected, because "new BigDecimal(double val)" was used. Now "BigDecimal.valueOf(double val)" and "new BigDecimal(Float.toString(f))" are used. But it is still not recommended to use float or double for currency values (see data type documentation).
@changelog_1093_li
@changelog_1101_li
#Global temporary tables are now deleted when closing the database. Before, they were deleted when opening the database the next time.
#Global temporary tables are now deleted when closing the database. Before, they were deleted when opening the database the next time.
@changelog_1094_li
@changelog_1102_li
#UNIQUE was not listed as a keyword.
#UNIQUE was not listed as a keyword.
@changelog_1095_li
@changelog_1103_li
#Improved error message when an non-SQL-exception occurred in a user defined function. The method name and parameters are included in the error message.
#Improved error message when an non-SQL-exception occurred in a user defined function. The method name and parameters are included in the error message.
@changelog_1096_li
@changelog_1104_li
#For some queries, the exception did not include the SQL statement. Example: select x from system_range(1, 2) group by 'a'.
#For some queries, the exception did not include the SQL statement. Example: select x from system_range(1, 2) group by 'a'.
@changelog_1097_li
@changelog_1105_li
#The Shell tool will execute SQL statements passed as using the command line parameter -sql.
#The Shell tool will execute SQL statements passed as using the command line parameter -sql.
@changelog_1098_li
@changelog_1106_li
#If InetAddress.getLocalHost() fails, the database should now throw an exception.
#If InetAddress.getLocalHost() fails, the database should now throw an exception.
@changelog_1099_li
@changelog_1107_li
#New columns INFORMATION_SCHEMA.INDEXES.INDEX_CLASS and INFORMATION_SCHEMA.TABLES.TABLE_CLASS.
#New columns INFORMATION_SCHEMA.INDEXES.INDEX_CLASS and INFORMATION_SCHEMA.TABLES.TABLE_CLASS.
@changelog_1100_li
@changelog_1108_li
#INFORMATION_SCHEMA.INDEXES.SQL now contains the CREATE INDEX statement instead of just the fully qualified index name.
#INFORMATION_SCHEMA.INDEXES.SQL now contains the CREATE INDEX statement instead of just the fully qualified index name.
@changelog_1101_h2
@changelog_1109_h2
#Version 1.2.134 (2010-04-23)
#Version 1.2.134 (2010-04-23)
@changelog_1102_li
@changelog_1110_li
#New system property h2.analyzeAuto (default 0 meaning disabled) to automatically run ANALYZE after that many changes to a table. For details, see the Javadoc of this system property. The plan is to set this property to 2000 in version 1.3.x.
#New system property h2.analyzeAuto (default 0 meaning disabled) to automatically run ANALYZE after that many changes to a table. For details, see the Javadoc of this system property. The plan is to set this property to 2000 in version 1.3.x.
@changelog_1103_li
@changelog_1111_li
#JdbcXAConnection.start() does not support TMJOIN. Issue 189.
#JdbcXAConnection.start() does not support TMJOIN. Issue 189.
@changelog_1104_li
@changelog_1112_li
#MySQL compatibility: TIMESTAMPDIFF is now an alias for DATEDIFF.
#MySQL compatibility: TIMESTAMPDIFF is now an alias for DATEDIFF.
@changelog_1105_li
@changelog_1113_li
#MERGE did not respect foreign key and check constraints.
#MERGE did not respect foreign key and check constraints.
@changelog_1106_li
@changelog_1114_li
#ALTER TABLE ALTER COLUMN: changing the data type of a column no longer makes it nullable.
#ALTER TABLE ALTER COLUMN: changing the data type of a column no longer makes it nullable.
@changelog_1107_li
@changelog_1115_li
#When using AUTO_SERVER=TRUE, the server is now started as a daemon thread. This was a problem when using Tomcat and a connection pool.
#When using AUTO_SERVER=TRUE, the server is now started as a daemon thread. This was a problem when using Tomcat and a connection pool.
@changelog_1108_li
@changelog_1116_li
#Servers can now be started as a daemon thread using the command line options -tcpDaemon, -pgDaemon, and -webDaemon.
#Servers can now be started as a daemon thread using the command line options -tcpDaemon, -pgDaemon, and -webDaemon.
@changelog_1109_li
@changelog_1117_li
#H2 Console: the built-in commands are now documented.
#H2 Console: the built-in commands are now documented.
@changelog_1110_li
@changelog_1118_li
#REPLACE: if any parameter is null, the result is null.
#REPLACE: if any parameter is null, the result is null.
@changelog_1111_li
@changelog_1119_li
#Queries with DISTINCT and ORDER BY will now use the index on ORDER BY if possible. This is specially important for queries used inside IN(SELECT ...).
#Queries with DISTINCT and ORDER BY will now use the index on ORDER BY if possible. This is specially important for queries used inside IN(SELECT ...).
@changelog_1112_li
@changelog_1120_li
#The new statement EXPLAIN ANALYZE executes the statement, and displays the query plan with the actual row scan count for each table.
#The new statement EXPLAIN ANALYZE executes the statement, and displays the query plan with the actual row scan count for each table.
@changelog_1113_li
@changelog_1121_li
#H2 Console: the auto-complete feature didn't quote column names that need quoting. Issue 186.
#H2 Console: the auto-complete feature didn't quote column names that need quoting. Issue 186.
@changelog_1114_li
@changelog_1122_li
#The experimental LOB storage mechanism now supports all features of the old one. To use it, set the system property "h2.lobInDatabase" to "true". If you have used this feature in version 1.2.133, you need to export and re-import the database using SCRIPT / RUNSCRIPT.
#The experimental LOB storage mechanism now supports all features of the old one. To use it, set the system property "h2.lobInDatabase" to "true". If you have used this feature in version 1.2.133, you need to export and re-import the database using SCRIPT / RUNSCRIPT.
@changelog_1115_li
@changelog_1123_li
#The functions isBeforeFirst() and isAfterLast() were not compliant to the JDBC spec. If the ResultSet contains no rows, they must return false. Fixed.
#The functions isBeforeFirst() and isAfterLast() were not compliant to the JDBC spec. If the ResultSet contains no rows, they must return false. Fixed.
@changelog_1116_li
@changelog_1124_li
#Filesystem parameters like "split:" didn't work in server mode with baseDir set.
#Filesystem parameters like "split:" didn't work in server mode with baseDir set.
@changelog_1117_li
@changelog_1125_li
#If baseDir is set, and a database name is given which points to a directory outside the baseDir (eg. "../dbname"), an exception is thrown.
#If baseDir is set, and a database name is given which points to a directory outside the baseDir (eg. "../dbname"), an exception is thrown.
@changelog_1118_h2
@changelog_1126_h2
#Version 1.2.133 (2010-04-10)
#Version 1.2.133 (2010-04-10)
@changelog_1119_li
@changelog_1127_li
#A new experimental LOB storage mechanism is available. When enabled, CLOB and BLOB data is stored in hidden tables in the database. To use it, set the system property "h2.lobInDatabase" to "true". Compression is not yet implemented. Duplicate objects are only stored once. Usually writing is slower, but reading is faster (mainly because of caching).
#A new experimental LOB storage mechanism is available. When enabled, CLOB and BLOB data is stored in hidden tables in the database. To use it, set the system property "h2.lobInDatabase" to "true". Compression is not yet implemented. Duplicate objects are only stored once. Usually writing is slower, but reading is faster (mainly because of caching).
@changelog_1120_li
@changelog_1128_li
#The Shell tool threw a NumberFormatException on a empty statement.
#The Shell tool threw a NumberFormatException on a empty statement.
@changelog_1121_li
@changelog_1129_li
#The h2small-*.jar did not support "drop all objects delete files". Now it is supported (the DeleteDbFiles tool is now included).
#The h2small-*.jar did not support "drop all objects delete files". Now it is supported (the DeleteDbFiles tool is now included).
@changelog_1122_li
@changelog_1130_li
#Operations that don't fit in memory are now faster. Temporary file handling was changed.
#Operations that don't fit in memory are now faster. Temporary file handling was changed.
@changelog_1123_li
@changelog_1131_li
#The default maximum log stream size is now 2 MB. This is a good value according to some performance tests.
#The default maximum log stream size is now 2 MB. This is a good value according to some performance tests.
@changelog_1124_li
@changelog_1132_li
#New system property "h2.syncMethod" to configure what method to call when closing the database, on checkpoint, and on CHECKPOINT SYNC. The default is "sync" which calls RandomAccessFile.getFD().sync().
#New system property "h2.syncMethod" to configure what method to call when closing the database, on checkpoint, and on CHECKPOINT SYNC. The default is "sync" which calls RandomAccessFile.getFD().sync().
@changelog_1125_li
@changelog_1133_li
#ROWNUM could not be used for pagination. The follow query returned no rows: select x from (select *, rownum as r from system_range(1, 3)) where r=2;
#ROWNUM could not be used for pagination. The follow query returned no rows: select x from (select *, rownum as r from system_range(1, 3)) where r=2;
@changelog_1126_li
@changelog_1134_li
#Workaround for a java.sql.Date issue: years above 9999 are not formatted correctly. When calling ResultSet.getString() on a date value, an alternative formatting algorithm is used.
#Workaround for a java.sql.Date issue: years above 9999 are not formatted correctly. When calling ResultSet.getString() on a date value, an alternative formatting algorithm is used.
@changelog_1127_li
@changelog_1135_li
#Prepared statements with nested subqueries did not always return the correct result. Example: select ?, ?, (select count(*) from test t, (select id from test where 0=?) t2 where t2.id=t.id) from test
#Prepared statements with nested subqueries did not always return the correct result. Example: select ?, ?, (select count(*) from test t, (select id from test where 0=?) t2 where t2.id=t.id) from test
@changelog_1128_li
@changelog_1136_li
#When using MULTI_THREADED=TRUE, the exception following exception could be thrown: "object already exists: TABLES"
#When using MULTI_THREADED=TRUE, the exception following exception could be thrown: "object already exists: TABLES"
@changelog_1129_li
@changelog_1137_li
#Comparison of integer columns against float numbers was not always correct. Issue 182.
#Comparison of integer columns against float numbers was not always correct. Issue 182.
@changelog_1130_li
@changelog_1138_li
#H2 Console: Editing the result of a multi-line queries failed. Issue 183.
#H2 Console: Editing the result of a multi-line queries failed. Issue 183.
@changelog_1131_li
@changelog_1139_li
#H2 Console: if the settings file (.h2.properties) can't be accessed, the exception is now ignored.
#H2 Console: if the settings file (.h2.properties) can't be accessed, the exception is now ignored.
@changelog_1132_h2
@changelog_1140_h2
#Version 1.2.132 (2010-03-21)
#Version 1.2.132 (2010-03-21)
@changelog_1133_li
@changelog_1141_li
#The implementation of a Java to C (source code level) converter has been started. The plan is: it should be possible to convert H2 (or a part of it) to C so that the database can be run without a JVM. This will be a long term project (it may take a year or so).
#The implementation of a Java to C (source code level) converter has been started. The plan is: it should be possible to convert H2 (or a part of it) to C so that the database can be run without a JVM. This will be a long term project (it may take a year or so).
@changelog_1134_li
@changelog_1142_li
#User defined table implementation can now be used using CREATE TABLE ... ENGINE. Thanks to Sergi Vladykin for implementing this feature!
#User defined table implementation can now be used using CREATE TABLE ... ENGINE. Thanks to Sergi Vladykin for implementing this feature!
@changelog_1135_li
@changelog_1143_li
#Improved MS SQL Server compatibility: support string concatenation using "+". Thanks to Stepan for the patch!
#Improved MS SQL Server compatibility: support string concatenation using "+". Thanks to Stepan for the patch!
@changelog_1136_li
@changelog_1144_li
#When using the multi-threaded mode, running ANALYZE concurrently in multiple connections could throw an exception.
#When using the multi-threaded mode, running ANALYZE concurrently in multiple connections could throw an exception.
@changelog_1137_li
@changelog_1145_li
#The MERGE statement is now about 30% faster when using a PreparedStatement.
#The MERGE statement is now about 30% faster when using a PreparedStatement.
@changelog_1138_li
@changelog_1146_li
#Multi-column indexes where the second or later column was descending did not always produce correct results (rows were missing in the result set, or the result set was empty).
#Multi-column indexes where the second or later column was descending did not always produce correct results (rows were missing in the result set, or the result set was empty).
@changelog_1139_li
@changelog_1147_li
#When using large transactions or a small log size, the database could get very slow (profiling shows the hotspot is in FileObjectDisk.sync()).
#When using large transactions or a small log size, the database could get very slow (profiling shows the hotspot is in FileObjectDisk.sync()).
@changelog_1140_li
@changelog_1148_li
#The Shell tool now prints the stack trace when the list mode is enabled.
#The Shell tool now prints the stack trace when the list mode is enabled.
@changelog_1141_li
@changelog_1149_li
#CREATE ALIAS ... AS: Compilation was incorrect if the source code contained characters that are not supported by the default file encoding.
#CREATE ALIAS ... AS: Compilation was incorrect if the source code contained characters that are not supported by the default file encoding.
@changelog_1142_li
@changelog_1150_li
#Issue 176: the JdbcDataSource now also supports a 'description' property.
#Issue 176: the JdbcDataSource now also supports a 'description' property.
@changelog_1143_li
@changelog_1151_li
#The Shell tool threw a ArrayIndexOutOfBoundsException after 20 statements.
#The Shell tool threw a ArrayIndexOutOfBoundsException after 20 statements.
@changelog_1144_li
@changelog_1152_li
#When using the small version of H2 ('jarClient'), the first call to Connection.createBlob (or similar) could throw a ClassNotFoundException because the file org.h2.store.fs.FileSystemZip is not included. This missing class is now ignored.
#When using the small version of H2 ('jarClient'), the first call to Connection.createBlob (or similar) could throw a ClassNotFoundException because the file org.h2.store.fs.FileSystemZip is not included. This missing class is now ignored.
@changelog_1145_li
@changelog_1153_li
#Literals of type BIGINT now have the correct data type.
#Literals of type BIGINT now have the correct data type.
@changelog_1146_h2
@changelog_1154_h2
#Version 1.2.131 (2010-03-05)
#Version 1.2.131 (2010-03-05)
@changelog_1147_li
@changelog_1155_li
#Older versions of H2 (version 1.2.127 and older) could not connect to a new version (version 1.2.129 and newer). The connection blocked when trying to connect. Now the connection no longer blocks, instead a SQL exception is thrown.
#Older versions of H2 (version 1.2.127 and older) could not connect to a new version (version 1.2.129 and newer). The connection blocked when trying to connect. Now the connection no longer blocks, instead a SQL exception is thrown.
@changelog_1148_li
@changelog_1156_li
#In versions 1.2.129 and 1.2.130, a database could not be opened sometimes after dropping tables or indexes, and then creating new indexes for existing tables. The exception contained the text "parent not found" (version 1.2.129) or "Table not found" (version 1.2.130).
#In versions 1.2.129 and 1.2.130, a database could not be opened sometimes after dropping tables or indexes, and then creating new indexes for existing tables. The exception contained the text "parent not found" (version 1.2.129) or "Table not found" (version 1.2.130).
@changelog_1149_li
@changelog_1157_li
#After the database was closed, a null pointer exception could occur in Database.flush.
#After the database was closed, a null pointer exception could occur in Database.flush.
@changelog_1150_li
@changelog_1158_li
#An ArrayIndexOutOfBoundsException could occur in the page store (eg. on "delete from table"). Fixed.
#An ArrayIndexOutOfBoundsException could occur in the page store (eg. on "delete from table"). Fixed.
@changelog_1151_h2
@changelog_1159_h2
#Version 1.2.130 (2010-02-26)
#Version 1.2.130 (2010-02-26)
@changelog_1152_li
@changelog_1160_li
#EXPLAIN: The query plan now contains ".tableScan" if a table scan is used.
#EXPLAIN: The query plan now contains ".tableScan" if a table scan is used.
@changelog_1153_li
@changelog_1161_li
#IN(..): when combining and IN(..) condition with a condition that didn't use an index, the result could contain duplicate rows.
#IN(..): when combining and IN(..) condition with a condition that didn't use an index, the result could contain duplicate rows.
@changelog_1154_li
@changelog_1162_li
#IN(..): the index was not used if there were multiple IN(..) conditions.
#IN(..): the index was not used if there were multiple IN(..) conditions.
@changelog_1155_li
@changelog_1163_li
#For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
#For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
@changelog_1156_li
@changelog_1164_li
#PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
#PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
@changelog_1157_li
@changelog_1165_li
#A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
#A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
@changelog_1158_li
@changelog_1166_li
#When using temporary tables, the database didn't shrink sometimes when closing. Also, sometimes a database could not recover normally.
#When using temporary tables, the database didn't shrink sometimes when closing. Also, sometimes a database could not recover normally.
@changelog_1159_li
@changelog_1167_li
#Large transactions could run out of heap space. The maximum size of a transaction is now much larger.
#Large transactions could run out of heap space. The maximum size of a transaction is now much larger.
@changelog_1160_li
@changelog_1168_li
#The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
#The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
@changelog_1161_li
@changelog_1169_li
#Creating a database was delayed about 2 seconds if the directory didn't exist.
#Creating a database was delayed about 2 seconds if the directory didn't exist.
@changelog_1162_li
@changelog_1170_li
#Implemented INIT feature. If the database URL contains ";INIT=...;" then the DDL or DML commands following are executed on startup. Example URL: jdbc:h2:mem:test;INIT=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
#Implemented INIT feature. If the database URL contains ";INIT=...;" then the DDL or DML commands following are executed on startup. Example URL: jdbc:h2:mem:test;INIT=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
@changelog_1163_h2
@changelog_1171_h2
#Version 1.2.129 (2010-02-19)
#Version 1.2.129 (2010-02-19)
@changelog_1164_li
@changelog_1172_li
#The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
#The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
@changelog_1165_li
@changelog_1173_li
#CREATE ALIAS: error message when compiling Java code have been improved.
#CREATE ALIAS: error message when compiling Java code have been improved.
@changelog_1166_li
@changelog_1174_li
#MVCC: creating a table with an incorrect constraint could cause strange errors.
#MVCC: creating a table with an incorrect constraint could cause strange errors.
@changelog_1167_li
@changelog_1175_li
#Hash indexes now are only used for single column indexes.
#Hash indexes now are only used for single column indexes.
@changelog_1168_li
@changelog_1176_li
#The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
#The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
@changelog_1169_li
@changelog_1177_li
#The file system abstraction no longer throws SQL exceptions.
#The file system abstraction no longer throws SQL exceptions.
@changelog_1170_li
@changelog_1178_li
#DatabaseEventListener.diskSpaceIsLow has changed.
#DatabaseEventListener.diskSpaceIsLow has changed.
@changelog_1171_li
@changelog_1179_li
#The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
#The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
@changelog_1172_li
@changelog_1180_li
#SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
#SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
@changelog_1173_li
@changelog_1181_li
#When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
#When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
@changelog_1174_li
@changelog_1182_li
#The BNF parser now uses the visitor pattern.
#The BNF parser now uses the visitor pattern.
@changelog_1175_li
@changelog_1183_li
#Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
#Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
@changelog_1176_li
@changelog_1184_li
#The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
#The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
@changelog_1177_li
@changelog_1185_li
#H2 Console: asynchronous login (using a DatabaseEventListener) is no longer supported.
#H2 Console: asynchronous login (using a DatabaseEventListener) is no longer supported.
@changelog_1178_li
@changelog_1186_li
#A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
#A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
@changelog_1179_li
@changelog_1187_li
#The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
#The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
@changelog_1180_li
@changelog_1188_li
#Tools: the method run(String... args) has been renamed to runTool(String... args).
#Tools: the method run(String... args) has been renamed to runTool(String... args).
@changelog_1181_li
@changelog_1189_li
#Server.startWebServer(Connection) was not working as expected.
#Server.startWebServer(Connection) was not working as expected.
@changelog_1182_li
@changelog_1190_li
#The database URL option ACCESS_MODE_LOG is no longer supported.
#The database URL option ACCESS_MODE_LOG is no longer supported.
@changelog_1183_li
@changelog_1191_li
#The database URL option RECOVER has currently no effect.
#The database URL option RECOVER has currently no effect.
@changelog_1184_li
@changelog_1192_li
#Converting an old (non-page store) database is no longer supported using this version.
#Converting an old (non-page store) database is no longer supported using this version.
@changelog_1185_li
@changelog_1193_li
#The following system properties are no longer supported: h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
#The following system properties are no longer supported: h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
@changelog_1186_li
@changelog_1194_li
#The setting LOG has currently no effect (it only had an effect when the page store was disabled).
#The setting LOG has currently no effect (it only had an effect when the page store was disabled).
@changelog_1187_li
@changelog_1195_li
#Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
#Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
@changelog_1188_li
@changelog_1196_li
#The translated resources are now stored in UTF-8 format.
#The translated resources are now stored in UTF-8 format.
@changelog_1189_li
@changelog_1197_li
#The Windows service wrapper now detects if multiple versions of H2 are installed.
#The Windows service wrapper now detects if multiple versions of H2 are installed.
@changelog_1190_h2
@changelog_1198_h2
#Version 1.2.128 (2010-01-30)
#Version 1.2.128 (2010-01-30)
@changelog_1191_li
@changelog_1199_li
#There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http://code.google.com/p/h2database/issues/detail?id=158
#There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http://code.google.com/p/h2database/issues/detail?id=158
@changelog_1192_li
@changelog_1200_li
#The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
#The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
@changelog_1193_li
@changelog_1201_li
#Automatic conversion of old databases to the page store format failed if the database contained LOB files.
#Automatic conversion of old databases to the page store format failed if the database contained LOB files.
@changelog_1194_li
@changelog_1202_li
#Nested subqueries didn't work for INSERT INTO and IN(..). Example: insert into test ((select 1));
#Nested subqueries didn't work for INSERT INTO and IN(..). Example: insert into test ((select 1));
@changelog_1195_li
@changelog_1203_li
#If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
#If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
@changelog_1196_li
@changelog_1204_li
#Less classes are loaded when using the database in embedded mode.
#Less classes are loaded when using the database in embedded mode.
@changelog_1197_li
@changelog_1205_li
#The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
#The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
@changelog_1198_li
@changelog_1206_li
#Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example: select count(*) from (select 1 union (select 2 intersect select 2)) x;
#Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example: select count(*) from (select 1 union (select 2 intersect select 2)) x;
@changelog_1199_li
@changelog_1207_li
#Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
#Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
@changelog_1200_li
@changelog_1208_li
#Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
#Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
@changelog_1201_li
@changelog_1209_li
#Documentation: the javadocs for Csv.write and read used the wrong default charset.
#Documentation: the javadocs for Csv.write and read used the wrong default charset.
@changelog_1202_li
@changelog_1210_li
#MVCC: if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
#MVCC: if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
@changelog_1203_li
@changelog_1211_li
#If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
#If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
@changelog_1204_li
@changelog_1212_li
#Triggers: INSTEAD OF triggers are now supported. Such triggers can be defined on views.
#Triggers: INSTEAD OF triggers are now supported. Such triggers can be defined on views.
@changelog_1205_li
@changelog_1213_li
#New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
#New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
@changelog_1206_li
@changelog_1214_li
#Slightly improved performance if the table is already locked.
#Slightly improved performance if the table is already locked.
@changelog_1207_li
@changelog_1215_li
#CompressLZF: faster decompression.
#CompressLZF: faster decompression.
@changelog_1208_li
@changelog_1216_li
#PgServer: the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
#PgServer: the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
@changelog_1209_li
@changelog_1217_li
#Serialized access mode (server-less multi-connection mode): fixed getGeneratedKeys() for sequences.
#Serialized access mode (server-less multi-connection mode): fixed getGeneratedKeys() for sequences.
@changelog_1210_h2
@changelog_1218_h2
#Version 1.2.127 (2010-01-15)
#Version 1.2.127 (2010-01-15)
@changelog_1211_li
@changelog_1219_li
#Serialized access mode (server-less multi-connection mode): sequences did not work as expected (there were gaps in generated values when using multiple connections).
#Serialized access mode (server-less multi-connection mode): sequences did not work as expected (there were gaps in generated values when using multiple connections).
@changelog_1212_li
@changelog_1220_li
#Page store: new databases can not be opened with older versions.
#Page store: new databases can not be opened with older versions.
@changelog_1213_li
@changelog_1221_li
#Page store: adding data to new database is now faster.
#Page store: adding data to new database is now faster.
@changelog_1214_li
@changelog_1222_li
#File system: getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
#File system: getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
@changelog_1215_li
@changelog_1223_li
#PgServer: incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches!
#PgServer: incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches!
@changelog_1216_li
@changelog_1224_li
#SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
#SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
@changelog_1217_li
@changelog_1225_li
#Page store: the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
#Page store: the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
@changelog_1218_li
@changelog_1226_li
#Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
#Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
@changelog_1219_li
@changelog_1227_li
#If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
#If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
@changelog_1220_li
@changelog_1228_li
#Alter table is now supported even if a table has views defined. (Patch from Kerry Sainsbury).
#Alter table is now supported even if a table has views defined. (Patch from Kerry Sainsbury).
@changelog_1221_li
@changelog_1229_li
#Fulltext search: exceptions within the fulltext search package had the wrong SQL state.
#Fulltext search: exceptions within the fulltext search package had the wrong SQL state.
@changelog_1222_li
@changelog_1230_li
#The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
#The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
@changelog_1223_li
@changelog_1231_li
#Trigger can now be called on rollback.
#Trigger can now be called on rollback.
@changelog_1224_li
@changelog_1232_li
#The shell script h2.sh ignored command line line arguments.
#The shell script h2.sh ignored command line line arguments.
@changelog_1225_li
@changelog_1233_li
#When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
#When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
@changelog_1226_li
@changelog_1234_li
#The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
#The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
@changelog_1227_li
@changelog_1235_li
#Native fulltext search: before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
#Native fulltext search: before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
@changelog_1228_li
@changelog_1236_li
#The .trace.db file is now only created if required.
#The .trace.db file is now only created if required.
@changelog_1229_li
@changelog_1237_li
#Shell tool: improved PostgreSQL compatibility.
#Shell tool: improved PostgreSQL compatibility.
@changelog_1230_li
@changelog_1238_li
#Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
#Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
@changelog_1231_li
@changelog_1239_li
#H2 Console: data that is too long is now abbreviated as follows: text... (100000 characters). A large binary is abbreviated as follows: abcdef... (100000 bytes).
#H2 Console: data that is too long is now abbreviated as follows: text... (100000 characters). A large binary is abbreviated as follows: abcdef... (100000 bytes).
@changelog_1232_li
@changelog_1240_li
#Faster data conversion from BIGINT or INT to DECIMAL.
#Faster data conversion from BIGINT or INT to DECIMAL.
@changelog_1233_li
@changelog_1241_li
#Server-less multi-connection mode: try to delete log files if switching between read/write operations.
#Server-less multi-connection mode: try to delete log files if switching between read/write operations.
@changelog_1234_li
@changelog_1242_li
#CompressLZF: Faster decompress and improved javadocs
#CompressLZF: Faster decompress and improved javadocs
@changelog_1235_h2
@changelog_1243_h2
#Version 1.2.126 (2009-12-18)
#Version 1.2.126 (2009-12-18)
@changelog_1236_li
@changelog_1244_li
#The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
#The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
@changelog_1237_li
@changelog_1245_li
#CSVREAD: when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
#CSVREAD: when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
@changelog_1238_li
@changelog_1246_li
#Optimization index conditions of the form 'column=NULL' (which is always false; unlike 'column IS NULL').
#Optimization index conditions of the form 'column=NULL' (which is always false; unlike 'column IS NULL').
@changelog_1239_li
@changelog_1247_li
#Script command and tool: the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
#Script command and tool: the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
@changelog_1240_li
@changelog_1248_li
#Statements with IN(SELECT..) conditions could produce the wrong result. Example: index on id, name; query: select * from test where id between 1 and 3 and name in (select 'World').
#Statements with IN(SELECT..) conditions could produce the wrong result. Example: index on id, name; query: select * from test where id between 1 and 3 and name in (select 'World').
@changelog_1241_li
@changelog_1249_li
#Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example: index on id; index on name; query: select * from (select * from test) where id=1 and name in('a', 'b'). select * from (select * from test) where id=1 and name in('Hello', 'World').
#Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example: index on id; index on name; query: select * from (select * from test) where id=1 and name in('a', 'b'). select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1242_li
@changelog_1250_li
#Page store: a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
#Page store: a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
@changelog_1243_li
@changelog_1251_li
#JaQu: the decompiler has been improved, and a few test cases already work. It is still incomplete however.
#JaQu: the decompiler has been improved, and a few test cases already work. It is still incomplete however.
@changelog_1244_li
@changelog_1252_li
#LIKE: any letter is now allowed after the escape character (which is still '\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
#LIKE: any letter is now allowed after the escape character (which is still '\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
@changelog_1245_li
@changelog_1253_li
#The reserve heap memory is no longer used.
#The reserve heap memory is no longer used.
@changelog_1246_li
@changelog_1254_li
#Database.checkpoint() could throw a NullPointerException.
#Database.checkpoint() could throw a NullPointerException.
@changelog_1247_h2
@changelog_1255_h2
#Version 1.2.125 (2009-12-06)
#Version 1.2.125 (2009-12-06)
@changelog_1248_li
@changelog_1256_li
#Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
#Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
@changelog_1249_li
@changelog_1257_li
#The shell tool now has a very simple statement history.
#The shell tool now has a very simple statement history.
@changelog_1250_li
@changelog_1258_li
#The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
#The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
@changelog_1251_li
@changelog_1259_li
#Right outer joins on tables that were already 'inner joined' was processed incorrectly.
#Right outer joins on tables that were already 'inner joined' was processed incorrectly.
@changelog_1252_li
@changelog_1260_li
#Temporary files from LOB objects were not deleted early enough when using the server mode.
#Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1253_li
@changelog_1261_li
#Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
#Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
@changelog_1254_li
@changelog_1262_li
#When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
#When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
@changelog_1255_li
@changelog_1263_li
#Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
#Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
@changelog_1256_li
@changelog_1264_li
#Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
#Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
@changelog_1257_li
@changelog_1265_li
#Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
#Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1258_li
@changelog_1266_li
#The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
#The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
@changelog_1259_li
@changelog_1267_li
#The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
#The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
@changelog_1260_li
@changelog_1268_li
#Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
#Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
@changelog_1261_li
@changelog_1269_li
#The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
#The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
@changelog_1262_li
@changelog_1270_li
#More bugs in the server-less multi-connection mode have been fixed.
#More bugs in the server-less multi-connection mode have been fixed.
@changelog_1263_li
@changelog_1271_li
#When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
#When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
@changelog_1264_li
@changelog_1272_li
#JdbcConnectionPool.getConnection() could throw a NullPointerException.
#JdbcConnectionPool.getConnection() could throw a NullPointerException.
@changelog_1265_li
@changelog_1273_li
#User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
#User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
@changelog_1266_li
@changelog_1274_li
#User defined functions with source code didn't work after re-opening the database.
#User defined functions with source code didn't work after re-opening the database.
@changelog_1267_li
@changelog_1275_li
#The newsfeeds are now Atom 1.0 standard compliant.
#The newsfeeds are now Atom 1.0 standard compliant.
@changelog_1268_li
@changelog_1276_li
#The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
#The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
@changelog_1269_li
@changelog_1277_li
#Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
#Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
@changelog_1270_li
@changelog_1278_li
#Drop table did not delete lob files in old file store (not PAGE_STORE).
#Drop table did not delete lob files in old file store (not PAGE_STORE).
@changelog_1271_h2
@changelog_1279_h2
#Version 1.2.124 (2009-11-20)
#Version 1.2.124 (2009-11-20)
@changelog_1272_li
@changelog_1280_li
#Clustering: there is now a way to detect which cluster instances are running.
#Clustering: there is now a way to detect which cluster instances are running.
@changelog_1273_li
@changelog_1281_li
#ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
#ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
@changelog_1274_li
@changelog_1282_li
#The file lock thread is now stopped when the database is closed.
#The file lock thread is now stopped when the database is closed.
@changelog_1275_li
@changelog_1283_li
#Issue 140: the Script tool now supports writing to a stream.
#Issue 140: the Script tool now supports writing to a stream.
@changelog_1276_li
@changelog_1284_li
#Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
#Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
@changelog_1277_li
@changelog_1285_li
#Page store: new databases can not be opened with older versions.
#Page store: new databases can not be opened with older versions.
@changelog_1278_li
@changelog_1286_li
#Page store: multi-column indexes didn't work if the cache was very small.
#Page store: multi-column indexes didn't work if the cache was very small.
@changelog_1279_li
@changelog_1287_li
#Page store: opening a database could theoretically result in an endless loop.
#Page store: opening a database could theoretically result in an endless loop.
@changelog_1280_li
@changelog_1288_li
#Page store: adding large indexed columns could get very slow.
#Page store: adding large indexed columns could get very slow.
@changelog_1281_li
@changelog_1289_li
#Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
#Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
@changelog_1282_li
@changelog_1290_li
#Page store: the recover tool sometimes generated a script file that contained duplicate data.
#Page store: the recover tool sometimes generated a script file that contained duplicate data.
@changelog_1283_li
@changelog_1291_li
#Page store: sometimes opening a read-only database failed.
#Page store: sometimes opening a read-only database failed.
@changelog_1284_li
@changelog_1292_li
#Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
#Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
@changelog_1285_li
@changelog_1293_li
#Page store: when using a very small page size (128 bytes or smaller), writing a large row could result in an endless recursion. This is only a theoretical problem, as the page size is 2 KB.
#Page store: when using a very small page size (128 bytes or smaller), writing a large row could result in an endless recursion. This is only a theoretical problem, as the page size is 2 KB.
@changelog_1286_li
@changelog_1294_li
#Page store: getting the min value from a descending index with NULL entries could return the wrong result.
#Page store: getting the min value from a descending index with NULL entries could return the wrong result.
@changelog_1287_li
@changelog_1295_li
#Page store: improved auto-recovery after power failure.
#Page store: improved auto-recovery after power failure.
@changelog_1288_li
@changelog_1296_li
#The JDBC client did not detect that it was not talking to an H2 server. This could result in strange exceptions when trying to connect to another kind of server.
#The JDBC client did not detect that it was not talking to an H2 server. This could result in strange exceptions when trying to connect to another kind of server.
@changelog_1289_li
@changelog_1297_li
#User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
#User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
@changelog_1290_li
@changelog_1298_li
#Database file lock: the exception "lock file modified in the future" is no longer thrown; instead, opening the file will be delayed by 2 seconds.
#Database file lock: the exception "lock file modified in the future" is no longer thrown; instead, opening the file will be delayed by 2 seconds.
@changelog_1291_li
@changelog_1299_li
#Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
#Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
@changelog_1292_li
@changelog_1300_li
#Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
#Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
@changelog_1293_li
@changelog_1301_li
#Improved read-only database detection.
#Improved read-only database detection.
@changelog_1294_h2
@changelog_1302_h2
#Version 1.2.123 (2009-11-08)
#Version 1.2.123 (2009-11-08)
@changelog_1295_li
@changelog_1303_li
#Page store: new databases can not be opened with older versions.
#Page store: new databases can not be opened with older versions.
@changelog_1296_li
@changelog_1304_li
#Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
#Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
@changelog_1297_li
@changelog_1305_li
#Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
#Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
@changelog_1298_li
@changelog_1306_li
#When using multi-threaded kernel mode, setting disabling locking (LOCK_MODE=0) will now throw an exception. At this time this combination will result in corruption when multiple threads try to update the same table.
#When using multi-threaded kernel mode, setting disabling locking (LOCK_MODE=0) will now throw an exception. At this time this combination will result in corruption when multiple threads try to update the same table.
@changelog_1299_li
@changelog_1307_li
#The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
#The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
@changelog_1300_li
@changelog_1308_li
#The Lucene fulltext search now also returns the score.
#The Lucene fulltext search now also returns the score.
@changelog_1301_li
@changelog_1309_li
# New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
# New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
@changelog_1302_li
@changelog_1310_li
#Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
#Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
@changelog_1303_li
@changelog_1311_li
#Improved error messages: identifiers and values are now quoted.
#Improved error messages: identifiers and values are now quoted.
@changelog_1304_li
@changelog_1312_li
#Improved error message when casting a value failed: the column name and type is included in the message.
#Improved error message when casting a value failed: the column name and type is included in the message.
@changelog_1305_li
@changelog_1313_li
#Improved support for GAE for Java thanks to Vince Bonfanti.
#Improved support for GAE for Java thanks to Vince Bonfanti.
@changelog_1306_h2
@changelog_1314_h2
#Version 1.2.122 (2009-10-28)
#Version 1.2.122 (2009-10-28)
@changelog_1307_li
@changelog_1315_li
#The native fulltext search now supports streaming CLOB data.
#The native fulltext search now supports streaming CLOB data.
@changelog_1308_li
@changelog_1316_li
#If the database URL ends with ;PAGE_STORE=TRUE and a database in the old format exists, it is automatically converted to the new page store format if possible. A backup of the database is created first. Automatic conversion is not supported if the database was not closed normally (if it contains uncommitted transactions).
#If the database URL ends with ;PAGE_STORE=TRUE and a database in the old format exists, it is automatically converted to the new page store format if possible. A backup of the database is created first. Automatic conversion is not supported if the database was not closed normally (if it contains uncommitted transactions).
@changelog_1309_li
@changelog_1317_li
#Dropping the current user is now allowed if another admin user exists.
#Dropping the current user is now allowed if another admin user exists.
@changelog_1310_li
@changelog_1318_li
#Values of type BINARY or BLOB could not be converted to the data type OTHER.
#Values of type BINARY or BLOB could not be converted to the data type OTHER.
@changelog_1311_li
@changelog_1319_li
#SHUTDOWN COMPACT now fully compacts the database.
#SHUTDOWN COMPACT now fully compacts the database.
@changelog_1312_li
@changelog_1320_li
#New system properties h2.maxCompactCount and h2.maxCompactTime to allow changing the default behavior (at most 2 seconds compacting when closing the database).
#New system properties h2.maxCompactCount and h2.maxCompactTime to allow changing the default behavior (at most 2 seconds compacting when closing the database).
@changelog_1313_li
@changelog_1321_li
#New sorted insert optimization (see Performance / Database Performance Tuning).
#New sorted insert optimization (see Performance / Database Performance Tuning).
@changelog_1314_li
@changelog_1322_li
#Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
#Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
@changelog_1315_li
@changelog_1323_li
#Page store: opening a large database was slow if it was not closed before.
#Page store: opening a large database was slow if it was not closed before.
@changelog_1316_li
@changelog_1324_li
#Page store: new write and read counters in the meta data table. Use SELECT * FROM INFORMATION_SCHEMA.SETTINGS WHERE NAME IN( 'info.FILE_WRITE_TOTAL', 'info.FILE_WRITE', 'info.FILE_READ', 'info.CACHE_MAX_SIZE', 'info.CACHE_SIZE')
#Page store: new write and read counters in the meta data table. Use SELECT * FROM INFORMATION_SCHEMA.SETTINGS WHERE NAME IN( 'info.FILE_WRITE_TOTAL', 'info.FILE_WRITE', 'info.FILE_READ', 'info.CACHE_MAX_SIZE', 'info.CACHE_SIZE')
@changelog_1317_li
@changelog_1325_li
#The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
#The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
@changelog_1318_li
@changelog_1326_li
#The documentation is no longer available in Japanese because the translation was too much out of sync. Please use the Google translation instead.
#The documentation is no longer available in Japanese because the translation was too much out of sync. Please use the Google translation instead.
@changelog_1319_li
@changelog_1327_li
#Certain queries were not sorted if subselect queries were involved
#Certain queries were not sorted if subselect queries were involved
@changelog_1320_li
@changelog_1328_li
#More bugs in the server-less multi-connection mode have been fixed: 90097 The database is read only, caches must be cleared on reconnect, etc.
#More bugs in the server-less multi-connection mode have been fixed: 90097 The database is read only, caches must be cleared on reconnect, etc.
@changelog_1321_h2
@changelog_1329_h2
#Version 1.2.121 (2009-10-11)
#Version 1.2.121 (2009-10-11)
@changelog_1322_li
@changelog_1330_li
#Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
#Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
@changelog_1323_li
@changelog_1331_li
#CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
#CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
@changelog_1324_li
@changelog_1332_li
#If a database in the old format exists, it is now used. The system property is used for new databases, or if databases exist in both formats. In any case, the flag in the URL overrides this logic.
#If a database in the old format exists, it is now used. The system property is used for new databases, or if databases exist in both formats. In any case, the flag in the URL overrides this logic.
@changelog_1325_li
@changelog_1333_li
#Page store bugs were fixed. Large values in indexed columns could corrupt the index.
#Page store bugs were fixed. Large values in indexed columns could corrupt the index.
@changelog_1326_li
@changelog_1334_li
#The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
#The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
@changelog_1327_li
@changelog_1335_li
#New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
#New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
@changelog_1328_h2
@changelog_1336_h2
#Version 1.2.120 (2009-10-04)
#Version 1.2.120 (2009-10-04)
@changelog_1329_li
@changelog_1337_li
#This is a beta version.
#This is a beta version.
@changelog_1330_li
@changelog_1338_li
#Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
#Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
@changelog_1331_li
@changelog_1339_li
#In version 1.2, the following system properties are now enabled by default: h2.pageStore, h2.nullConcatIsNull, h2.optimizeInList. The default value for h2.defaultMaxLengthInplaceLob is now 4096 (it was 1024 with version 1.1).
#In version 1.2, the following system properties are now enabled by default: h2.pageStore, h2.nullConcatIsNull, h2.optimizeInList. The default value for h2.defaultMaxLengthInplaceLob is now 4096 (it was 1024 with version 1.1).
@changelog_1332_li
@changelog_1340_li
#New databases are now stored in the new 'page store' file format. Existing databases are kept in the old file format. To use the old file format, append ;PAGE_STORE=FALSE to the database URL or set the system property h2.pageStore to false.
#New databases are now stored in the new 'page store' file format. Existing databases are kept in the old file format. To use the old file format, append ;PAGE_STORE=FALSE to the database URL or set the system property h2.pageStore to false.
@changelog_1333_li
@changelog_1341_li
#Issue 125: Renaming primary keys was not persistent. Fixed. Unfortunately, databases created by this version can not be opened with older versions because of this change.
#Issue 125: Renaming primary keys was not persistent. Fixed. Unfortunately, databases created by this version can not be opened with older versions because of this change.
@changelog_1334_li
@changelog_1342_li
#Issue 124: Hibernate schema validation failed for decimal/numeric columns. This problem is fixed in the Hibernate dialect that is included with H2 (src/tools/org/hibernate/dialect/H2Dialect.java.txt), but not in Hibernate yet.
#Issue 124: Hibernate schema validation failed for decimal/numeric columns. This problem is fixed in the Hibernate dialect that is included with H2 (src/tools/org/hibernate/dialect/H2Dialect.java.txt), but not in Hibernate yet.
@changelog_1335_li
@changelog_1343_li
#PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
#PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
@changelog_1336_li
@changelog_1344_li
#Linked tables now support default values when inserting, updating or merging.
#Linked tables now support default values when inserting, updating or merging.
@changelog_1337_li
@changelog_1345_li
#Bugfixes in the page store.
#Bugfixes in the page store.
@changelog_1338_li
@changelog_1346_li
#Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
#Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
@changelog_1339_li
@changelog_1347_li
#Allow writing to linked tables in readonly databases.
#Allow writing to linked tables in readonly databases.
@changelog_1340_h2
@changelog_1348_h2
#Version 1.1.119 (2009-09-26)
#Version 1.1.119 (2009-09-26)
@changelog_1341_li
@changelog_1349_li
#SQL statements in the exception message are no longer included if they contain '--hide--'.
#SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1342_li
@changelog_1350_li
#Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
#Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
@changelog_1343_li
@changelog_1351_li
#New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
#New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
@changelog_1344_li
@changelog_1352_li
#New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
#New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
@changelog_1345_li
@changelog_1353_li
#The cache algorithm TQ is disabled in this version, because it is unstable, and because the current implementation does not have any measurable advantages over the default.
#The cache algorithm TQ is disabled in this version, because it is unstable, and because the current implementation does not have any measurable advantages over the default.
@changelog_1346_li
@changelog_1354_li
#New committer: Christian Peter. He works for <a href="http://www.docware.com">Docware</a> and helped a lot finding and fixing bugs, and generally improving the database. He is now a committer.
#New committer: Christian Peter. He works for <a href="http://www.docware.com">Docware</a> and helped a lot finding and fixing bugs, and generally improving the database. He is now a committer.
@changelog_1347_li
@changelog_1355_li
#ChangeFileEncryption did not work with Lob subdirectories. Fixed.
#ChangeFileEncryption did not work with Lob subdirectories. Fixed.
@changelog_1348_li
@changelog_1356_li
#Issue 121: JaQu: new simple update and merge methods.
#Issue 121: JaQu: new simple update and merge methods.
@changelog_1349_li
@changelog_1357_li
#Issue 120: JaQu didn't close result sets.
#Issue 120: JaQu didn't close result sets.
@changelog_1350_li
@changelog_1358_li
#Issue 119: JaQu creates wrong WHERE conditions on some inputs.
#Issue 119: JaQu creates wrong WHERE conditions on some inputs.
@changelog_1351_li
@changelog_1359_li
#The new page store mechanism is now alpha-level quality. The next release will most likely be "1.2.120 beta" where this mode is enabled by default. To use it right now, append ;PAGE_STORE=TRUE to the database URL. The file format of this mode will probably not change any more.
#The new page store mechanism is now alpha-level quality. The next release will most likely be "1.2.120 beta" where this mode is enabled by default. To use it right now, append ;PAGE_STORE=TRUE to the database URL. The file format of this mode will probably not change any more.
@changelog_1352_li
@changelog_1360_li
#SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
#SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
@changelog_1353_li
@changelog_1361_li
#The Recover tool now also processes the log files, however applying those changes is still a manual process.
#The Recover tool now also processes the log files, however applying those changes is still a manual process.
@changelog_1354_li
@changelog_1362_li
#New sample application that shows how to pass data to a trigger.
#New sample application that shows how to pass data to a trigger.
@changelog_1355_li
@changelog_1363_li
#More bugs in the server-less multi-connection mode have been fixed: On Windows, two processes could write to the same database at the same time.
#More bugs in the server-less multi-connection mode have been fixed: On Windows, two processes could write to the same database at the same time.
@changelog_1356_li
@changelog_1364_li
#When loading triggers or other client classes (static functions, database event listener, user aggregate functions, other JDBC drivers), the database now uses the context class loader if the class could not be found using Class.forName().
#When loading triggers or other client classes (static functions, database event listener, user aggregate functions, other JDBC drivers), the database now uses the context class loader if the class could not be found using Class.forName().
@changelog_1357_li
@changelog_1365_li
#Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
#Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
@changelog_1358_li
@changelog_1366_li
#Statement.getConnection() threw an exception if the connection was already closed.
#Statement.getConnection() threw an exception if the connection was already closed.
@changelog_1359_li
@changelog_1367_li
#The native fulltext index kept a reference to a database after the database was closed.
#The native fulltext index kept a reference to a database after the database was closed.
@changelog_1360_li
@changelog_1368_li
#Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
#Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1361_li
@changelog_1369_li
#The optimizer does a better job for joins if indexes are missing.
#The optimizer does a better job for joins if indexes are missing.
@changelog_1362_h2
@changelog_1370_h2
#Version 1.1.118 (2009-09-04)
#Version 1.1.118 (2009-09-04)
@changelog_1363_li
@changelog_1371_li
#SHOW COLUMNS only listed indexed columns.
#SHOW COLUMNS only listed indexed columns.
@changelog_1364_li
@changelog_1372_li
#When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
#When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
@changelog_1365_li
@changelog_1373_li
#DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
#DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
@changelog_1366_li
@changelog_1374_li
#AUTO_INCREMENT now works in the same way in ALTER TABLE ALTER COLUMN as in CREATE TABLE (it does not create a primary key).
#AUTO_INCREMENT now works in the same way in ALTER TABLE ALTER COLUMN as in CREATE TABLE (it does not create a primary key).
@changelog_1367_li
@changelog_1375_li
#Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
#Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
@changelog_1368_li
@changelog_1376_li
#Better support GaeVFS (Google App Engine Virtual File System).
#Better support GaeVFS (Google App Engine Virtual File System).
@changelog_1369_li
@changelog_1377_li
#JaQu: the plan is to support natural (pure Java / Scala) conditions such as (id == 1 && name.equals("Test")). A proof of concept decompiler is now included (it doesn't work yet).
#JaQu: the plan is to support natural (pure Java / Scala) conditions such as (id == 1 && name.equals("Test")). A proof of concept decompiler is now included (it doesn't work yet).
@changelog_1370_li
@changelog_1378_li
#Various bugfixes and improvements in the page store mechanism (still experimental).
#Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1371_li
@changelog_1379_li
#PreparedStatement.setObject now converts a java.lang.Character to a string.
#PreparedStatement.setObject now converts a java.lang.Character to a string.
@changelog_1372_li
@changelog_1380_li
#H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
#H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
@changelog_1373_li
@changelog_1381_li
#Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
#Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
@changelog_1374_li
@changelog_1382_li
#H2 Console: indexes of tables of non-default schemas are now also listed.
#H2 Console: indexes of tables of non-default schemas are now also listed.
@changelog_1375_li
@changelog_1383_li
#Issue 111: Multi-version concurrency / duplicate primary key after rollback.
#Issue 111: Multi-version concurrency / duplicate primary key after rollback.
@changelog_1376_li
@changelog_1384_li
#Issue 110: Multi-version concurrency / wrong exception is thrown.
#Issue 110: Multi-version concurrency / wrong exception is thrown.
@changelog_1377_li
@changelog_1385_li
#Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
#Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
@changelog_1378_li
@changelog_1386_li
#Issue 101: The following sequence could throw the exception "Row not found when trying to delete": start a transaction, insert many rows, delete many rows, rollback. The number of rows depends on the cache size.
#Issue 101: The following sequence could throw the exception "Row not found when trying to delete": start a transaction, insert many rows, delete many rows, rollback. The number of rows depends on the cache size.
@changelog_1379_li
@changelog_1387_li
#The stack trace of very common exceptions is no longer written to the .trace.db file by default.
#The stack trace of very common exceptions is no longer written to the .trace.db file by default.
@changelog_1380_li
@changelog_1388_li
#An optimization for OR is implemented, but disabled by default. Expressions of the type X=1 OR X=2 are converted to X IN(1, 2). To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver.
#An optimization for OR is implemented, but disabled by default. Expressions of the type X=1 OR X=2 are converted to X IN(1, 2). To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver.
@changelog_1381_li
@changelog_1389_li
#An optimization for IN(..) and IN(SELECT...) is implemented, but disabled by default. To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver. If enabled, this overrides h2.optimizeIn and h2.optimizeInJoin. Unlike now, this optimization will also speed up updates and deletes.
#An optimization for IN(..) and IN(SELECT...) is implemented, but disabled by default. To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver. If enabled, this overrides h2.optimizeIn and h2.optimizeInJoin. Unlike now, this optimization will also speed up updates and deletes.
