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h2/src/docsrc/text/_docs_en.utf8.txt
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...@@ -509,7 +509,7 @@ Convert the H2 Console to an .exe file using: <code>ikvmc -target:winexe h2.jar< ...@@ -509,7 +509,7 @@ Convert the H2 Console to an .exe file using: <code>ikvmc -target:winexe h2.jar<
Create a .dll file using (change the version accordingly): <code>ikvmc.exe -target:library -version:1.0.68.0 h2.jar</code> Create a .dll file using (change the version accordingly): <code>ikvmc.exe -target:library -version:1.0.68.0 h2.jar</code>
@advanced_1170_p @advanced_1170_p
If you want your C# application use H2, you need to add the h2.dll and the IKVM.OpenJDK.ClassLibrary.dll to your C# solution. See also the short <a href="http://groups.google.com/group/h2-database/browse_thread/thread/400bc5a9bc9de3fd">C# source code example</a> . If you want your C# application use H2, you need to add the h2.dll and the IKVM.OpenJDK.ClassLibrary.dll to your C# solution. Here some sample code:
@advanced_1171_h2 @advanced_1171_h2
ACID ACID
...@@ -989,795 +989,801 @@ Change Log ...@@ -989,795 +989,801 @@ Change Log
Next Version (unreleased) Next Version (unreleased)
@changelog_1002_li @changelog_1002_li
.
@changelog_1003_h2
Version 1.0.68 (2008-03-18)
@changelog_1004_li
Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000. Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000.
@changelog_1003_li @changelog_1005_li
A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked. A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked.
@changelog_1004_li @changelog_1006_li
Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory. Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory.
@changelog_1005_li @changelog_1007_li
ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction. ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction.
@changelog_1006_li @changelog_1008_li
New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled. New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled.
@changelog_1007_li @changelog_1009_li
When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed. When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed.
@changelog_1008_li @changelog_1010_li
Improved performance when using lob files in directories (however this is still disabled by default) Improved performance when using lob files in directories (however this is still disabled by default)
@changelog_1009_li @changelog_1011_li
H2 Console: autocomplete didn't work with very large scripts. Fixed. H2 Console: autocomplete didn't work with very large scripts. Fixed.
@changelog_1010_li @changelog_1012_li
Fulltext search: new method SEARCH_DATA that returns the column names and primary keys as arrays. Fulltext search: new method SEARCH_DATA that returns the column names and primary keys as arrays.
@changelog_1011_li @changelog_1013_li
New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true. New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true.
@changelog_1012_li @changelog_1014_li
When using multi-version concurrency (MVCC=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session. When using multi-version concurrency (MVCC=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session.
@changelog_1013_li @changelog_1015_li
H2 Console: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr. H2 Console: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr.
@changelog_1014_li @changelog_1016_li
H2 Console: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu. H2 Console: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu.
@changelog_1015_li @changelog_1017_li
H2 Console: the start window works better with IKVM H2 Console: the start window works better with IKVM
@changelog_1016_li @changelog_1018_li
H2 Console: improved compatibility with Safari (Safari requires keep-alive) H2 Console: improved compatibility with Safari (Safari requires keep-alive)
@changelog_1017_li @changelog_1019_li
Random: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem. Random: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem.
@changelog_1018_li @changelog_1020_li
SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException. SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException.
@changelog_1019_li @changelog_1021_li
When using a view, the column precision was changed to the default scale for some data types. When using a view, the column precision was changed to the default scale for some data types.
@changelog_1020_li @changelog_1022_li
CSVWRITE now supports a 'null string' that is used for parsing and writing NULL. CSVWRITE now supports a 'null string' that is used for parsing and writing NULL.
@changelog_1021_li @changelog_1023_li
Some long running queries could not be cancelled. Some long running queries could not be cancelled.
@changelog_1022_li @changelog_1024_li
Queries with many outer join tables were very slow. Fixed. Queries with many outer join tables were very slow. Fixed.
@changelog_1023_li @changelog_1025_li
The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache. The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache.
@changelog_1024_li @changelog_1026_li
UPDATE SET column=DEFAULT is now supported. UPDATE SET column=DEFAULT is now supported.
@changelog_1025_h2 @changelog_1027_h2
Version 1.0.67 (2008-02-22) Version 1.0.67 (2008-02-22)
@changelog_1026_li @changelog_1028_li
New function FILE_READ to read a file or from an URL. Both binary and text data is supported. New function FILE_READ to read a file or from an URL. Both binary and text data is supported.
@changelog_1027_li @changelog_1029_li
CREATE TABLE AS SELECT now supports specifying the column list and data types. CREATE TABLE AS SELECT now supports specifying the column list and data types.
@changelog_1028_li @changelog_1030_li
Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock. Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock.
@changelog_1029_li @changelog_1031_li
A user now has all rights on his own local temporary tables. A user now has all rights on his own local temporary tables.
@changelog_1030_li @changelog_1032_li
The CSV tool now supports a custom lineSeparator. The CSV tool now supports a custom lineSeparator.
@changelog_1031_li @changelog_1033_li
When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering. When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering.
@changelog_1032_li @changelog_1034_li
The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen! The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen!
@changelog_1033_li @changelog_1035_li
Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger. Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger.
@changelog_1034_li @changelog_1036_li
Opening databases with ACCESS_MODE_DATA=r is now supported. In this case the database is read-only, but the files don't not need to be read-only. Opening databases with ACCESS_MODE_DATA=r is now supported. In this case the database is read-only, but the files don't not need to be read-only.
@changelog_1035_li @changelog_1037_li
Security: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks. Security: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks.
@changelog_1036_li @changelog_1038_li
The value cache is now a soft reference cache. This should help save memory. The value cache is now a soft reference cache. This should help save memory.
@changelog_1037_li @changelog_1039_li
CREATE INDEX on a table with many rows could run out of memory. Fixed. CREATE INDEX on a table with many rows could run out of memory. Fixed.
@changelog_1038_li @changelog_1040_li
Large result sets are now a bit faster. Large result sets are now a bit faster.
@changelog_1039_li @changelog_1041_li
ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions). ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions).
@changelog_1040_li @changelog_1042_li
When setting the base directory on the command line, the user directory prefix ('~') was ignored. When setting the base directory on the command line, the user directory prefix ('~') was ignored.
@changelog_1041_li @changelog_1043_li
The DbStarter servlet didn't start the TCP listener even if configured. The DbStarter servlet didn't start the TCP listener even if configured.
@changelog_1042_li @changelog_1044_li
Statement.setQueryTimeout() is now supported. Statement.setQueryTimeout() is now supported.
@changelog_1043_li @changelog_1045_li
New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout. New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout.
@changelog_1044_li @changelog_1046_li
Changing the transaction log level (SET LOG) is now written to the trace file by default. Changing the transaction log level (SET LOG) is now written to the trace file by default.
@changelog_1045_li @changelog_1047_li
In a SQL script, primary key constraints are now ordered before foreign key constraints. In a SQL script, primary key constraints are now ordered before foreign key constraints.
@changelog_1046_li @changelog_1048_li
It was not possible to create a referential constraint to a table in a different schema in some situations. It was not possible to create a referential constraint to a table in a different schema in some situations.
@changelog_1047_li @changelog_1049_li
The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case. The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case.
@changelog_1048_h2 @changelog_1050_h2
Version 1.0.66 (2008-02-02) Version 1.0.66 (2008-02-02)
@changelog_1049_li @changelog_1051_li
There is a new online error analyzer tool. There is a new online error analyzer tool.
@changelog_1050_li @changelog_1052_li
H2 Console: stack traces are now links to the source code in the source repository (H2 database only). H2 Console: stack traces are now links to the source code in the source repository (H2 database only).
@changelog_1051_li @changelog_1053_li
CHAR data type equals comparison was case insensitive instead of case sensitive. CHAR data type equals comparison was case insensitive instead of case sensitive.
@changelog_1052_li @changelog_1054_li
The exception 'Value too long for column' now includes the data. The exception 'Value too long for column' now includes the data.
@changelog_1053_li @changelog_1055_li
The table name was missing in the documentation of CREATE INDEX. The table name was missing in the documentation of CREATE INDEX.
@changelog_1054_li @changelog_1056_li
Better support for IKVM (www.ikvm.net): the H2 Console now opens a browser window. Better support for IKVM (www.ikvm.net): the H2 Console now opens a browser window.
@changelog_1055_li @changelog_1057_li
The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions. The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions.
@changelog_1056_li @changelog_1058_li
The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed. The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed.
@changelog_1057_li @changelog_1059_li
The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far). The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far).
@changelog_1058_li @changelog_1060_li
The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice. The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice.
@changelog_1059_li @changelog_1061_li
Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading. Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading.
@changelog_1060_li @changelog_1062_li
For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string). For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string).
@changelog_1061_li @changelog_1063_li
Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster. Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster.
@changelog_1062_li @changelog_1064_li
Variables: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables. Variables: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables.
@changelog_1063_li @changelog_1065_li
Fulltext search is now supported in named in-memory databases. Fulltext search is now supported in named in-memory databases.
@changelog_1064_li @changelog_1066_li
H2 Console: multiple consecutive spaces in the setting name did not work. Fixed. H2 Console: multiple consecutive spaces in the setting name did not work. Fixed.
@changelog_1065_h2 @changelog_1067_h2
Version 1.0.65 (2008-01-18) Version 1.0.65 (2008-01-18)
@changelog_1066_li @changelog_1068_li
The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6). The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6).
@changelog_1067_li @changelog_1069_li
A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER=1 to the database URL in cases where it should not have been required. A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER=1 to the database URL in cases where it should not have been required.
@changelog_1068_li @changelog_1070_li
The performance for DROP and DROP ALL OBJECTS has been improved. The performance for DROP and DROP ALL OBJECTS has been improved.
@changelog_1069_li @changelog_1071_li
The ChangePassword API has been improved. The ChangePassword API has been improved.
@changelog_1070_li @changelog_1072_li
User defined variables are now supported. Examples: SET @VAR=10;CALL @VAR. This can be used for running totals as in: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10) User defined variables are now supported. Examples: SET @VAR=10;CALL @VAR. This can be used for running totals as in: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10)
@changelog_1071_li @changelog_1073_li
The Ukrainian translation has been improved. The Ukrainian translation has been improved.
@changelog_1072_li @changelog_1074_li
CALL statements can now be used in batch updates and called using Statement.executeUpdate. CALL statements can now be used in batch updates and called using Statement.executeUpdate.
@changelog_1073_li @changelog_1075_li
New read-only setting CREATE_BUILD (the build number of the database engine that created the database). New read-only setting CREATE_BUILD (the build number of the database engine that created the database).
@changelog_1074_li @changelog_1076_li
The optimizer did not use multi column indexes for range queries in some cases. Fixed. The optimizer did not use multi column indexes for range queries in some cases. Fixed.
@changelog_1075_li @changelog_1077_li
The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified. The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified.
@changelog_1076_li @changelog_1078_li
The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress. The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress.
@changelog_1077_li @changelog_1079_li
Batch update: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed. Batch update: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed.
@changelog_1078_li @changelog_1080_li
Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed. Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed.
@changelog_1079_li @changelog_1081_li
The performance for large result sets in the server mode has been improved. The performance for large result sets in the server mode has been improved.
@changelog_1080_li @changelog_1082_li
The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize. The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize.
@changelog_1081_li @changelog_1083_li
The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used. The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used.
@changelog_1082_li @changelog_1084_li
The SCRIPT command did not split up CLOB data correctly. Fixed. The SCRIPT command did not split up CLOB data correctly. Fixed.
@changelog_1083_li @changelog_1085_li
Optimization for single column distinct queries with an index: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false. Optimization for single column distinct queries with an index: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false.
@changelog_1084_li @changelog_1086_li
DROP ALL OBJECTS did not drop user defined aggregate functions and domains. DROP ALL OBJECTS did not drop user defined aggregate functions and domains.
@changelog_1085_li @changelog_1087_li
PostgreSQL compatibility: COUNT(T.*) is now supported. PostgreSQL compatibility: COUNT(T.*) is now supported.
@changelog_1086_li @changelog_1088_li
LIKE comparisons are now faster. LIKE comparisons are now faster.
@changelog_1087_li @changelog_1089_li
Encrypted databases are now faster. Encrypted databases are now faster.
@changelog_1088_h2 @changelog_1090_h2
Version 1.0.64 (2007-12-27) Version 1.0.64 (2007-12-27)
@changelog_1089_li @changelog_1091_li
3-way union queries with prepared statement or views could return the wrong results. Fixed. 3-way union queries with prepared statement or views could return the wrong results. Fixed.
@changelog_1090_li @changelog_1092_li
The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed. The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed.
@changelog_1091_li @changelog_1093_li
CSV tool: some escape/separator character combinations did not work. Fixed. CSV tool: some escape/separator character combinations did not work. Fixed.
@changelog_1092_li @changelog_1094_li
CSV tool: the character # could not be used as a separator when reading. CSV tool: the character # could not be used as a separator when reading.
@changelog_1093_li @changelog_1095_li
Recovery: when the index file is corrupt, now the database deletes it and re-creates it automatically. Recovery: when the index file is corrupt, now the database deletes it and re-creates it automatically.
@changelog_1094_li @changelog_1096_li
The MVCC mode did not work well with in-memory databases. Fixed. The MVCC mode did not work well with in-memory databases. Fixed.
@changelog_1095_li @changelog_1097_li
The FTP server now supports a event listener. Thanks Fulvio Biondi for the help! The FTP server now supports a event listener. Thanks Fulvio Biondi for the help!
@changelog_1096_li @changelog_1098_li
New system function CANCEL_SESSION to cancel the currently executing statement of another session. New system function CANCEL_SESSION to cancel the currently executing statement of another session.
@changelog_1097_li @changelog_1099_li
The database now supports an exclusive mode. In exclusive mode, new connections are rejected. The database now supports an exclusive mode. In exclusive mode, new connections are rejected.
@changelog_1098_li @changelog_1100_li
H2 Console: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '=null'. H2 Console: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '=null'.
@changelog_1099_li @changelog_1101_li
New built-in functions RPAD and LPAD. New built-in functions RPAD and LPAD.
@changelog_1100_li @changelog_1102_li
New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session. New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session.
@changelog_1101_li @changelog_1103_li
The Ukrainian translation was not working in the last release. Fixed. The Ukrainian translation was not working in the last release. Fixed.
@changelog_1102_li @changelog_1104_li
Creating many tables (many hundreds) was slow. Fixed. Creating many tables (many hundreds) was slow. Fixed.
@changelog_1103_li @changelog_1105_li
Opening a database with many indexes (thousands) was slow. Fixed. Opening a database with many indexes (thousands) was slow. Fixed.
@changelog_1104_li @changelog_1106_li
H2 Console / autocomplete: Ctrl+Space now shows the list in all modes. H2 Console / autocomplete: Ctrl+Space now shows the list in all modes.
@changelog_1105_li @changelog_1107_li
The method Trigger.init has been changed: the parameters 'before' and 'type', have been added to the init method. The method Trigger.init has been changed: the parameters 'before' and 'type', have been added to the init method.
@changelog_1106_li @changelog_1108_li
The performance has been improved for ResultSet methods with column name. The performance has been improved for ResultSet methods with column name.
@changelog_1107_li @changelog_1109_li
A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed. A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed.
@changelog_1108_li @changelog_1110_li
The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar! The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar!
@changelog_1109_li @changelog_1111_li
Improved debugging support: toString methods of most object now return a meaningful text. Improved debugging support: toString methods of most object now return a meaningful text.
@changelog_1110_li @changelog_1112_li
The classes DbStarter and WebServlet have been moved to src/main. The classes DbStarter and WebServlet have been moved to src/main.
@changelog_1111_li @changelog_1113_li
The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement. The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement.
@changelog_1112_li @changelog_1114_li
Loading classes and calling methods can be restricted using the new system property h2.allowedClasses. Loading classes and calling methods can be restricted using the new system property h2.allowedClasses.
@changelog_1113_li @changelog_1115_li
The database could not be used in Java applets due to security exceptions. Fixed. The database could not be used in Java applets due to security exceptions. Fixed.
@changelog_1114_h2 @changelog_1116_h2
Version 1.0.63 (2007-12-02) Version 1.0.63 (2007-12-02)
@changelog_1115_li @changelog_1117_li
The SecurePassword example has been improved. The SecurePassword example has been improved.
@changelog_1116_li @changelog_1118_li
In timezones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed. In timezones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed.
@changelog_1117_li @changelog_1119_li
The native fulltext search was not working properly after re-connecting. The native fulltext search was not working properly after re-connecting.
@changelog_1118_li @changelog_1120_li
Improved FTP server: now the PORT command is supported. Improved FTP server: now the PORT command is supported.
@changelog_1119_li @changelog_1121_li
Temporary views (FROM(...)) with UNION didn't work if nested. Fixed. Temporary views (FROM(...)) with UNION didn't work if nested. Fixed.
@changelog_1120_li @changelog_1122_li
Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin=true Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin=true
@changelog_1121_li @changelog_1123_li
The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot! The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot!
@changelog_1122_li @changelog_1124_li
New function TABLE_DISTINCT. New function TABLE_DISTINCT.
@changelog_1123_li @changelog_1125_li
Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly. Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly.
@changelog_1124_li @changelog_1126_li
Certain setting in the Server didn't work (http://code.google.com/p/h2database/issues/detail?id=7). Certain setting in the Server didn't work (http://code.google.com/p/h2database/issues/detail?id=7).
@changelog_1125_h2 @changelog_1127_h2
Version 1.0.62 (2007-11-25) Version 1.0.62 (2007-11-25)
@changelog_1126_li @changelog_1128_li
Large updates and deletes are now supported by buffering data to disk if required. The threshold is currently set to 100'000 bytes and can be changed using SET MAX_OPERATION_MEMORY or using by appending ;MAX_OPERATION_MEMORY=.. to the database URL. See also the docs. Large updates and deletes are now supported by buffering data to disk if required. The threshold is currently set to 100'000 bytes and can be changed using SET MAX_OPERATION_MEMORY or using by appending ;MAX_OPERATION_MEMORY=.. to the database URL. See also the docs.
@changelog_1127_li @changelog_1129_li
MVCC: now an exception is thrown when an application tries to change the MVCC setting while the database is already open. MVCC: now an exception is thrown when an application tries to change the MVCC setting while the database is already open.
@changelog_1128_li @changelog_1130_li
Referential integrity checks didn't lock the referenced table, and thus could read uncommitted rows of other connections. In that way the referential constraints could get violated (except when using MVCC). Referential integrity checks didn't lock the referenced table, and thus could read uncommitted rows of other connections. In that way the referential constraints could get violated (except when using MVCC).
@changelog_1129_li @changelog_1131_li
Renaming or dropping a user with a schema, or removing the admin property of that user made the schema inaccessible after re-opening the database. Fixed. Renaming or dropping a user with a schema, or removing the admin property of that user made the schema inaccessible after re-opening the database. Fixed.
@changelog_1130_li @changelog_1132_li
The H2 Console now also support the command line option -ifExists when started from the Server tool, but only when connecting to H2 databases. The H2 Console now also support the command line option -ifExists when started from the Server tool, but only when connecting to H2 databases.
@changelog_1131_li @changelog_1133_li
Duplicate column names were not detected when renaming columns. Fixed. Duplicate column names were not detected when renaming columns. Fixed.
@changelog_1132_li @changelog_1134_li
The console did not display multiple embedded spaces in text correctly. Fixed. The console did not display multiple embedded spaces in text correctly. Fixed.
@changelog_1133_li @changelog_1135_li
Google Android support: use 'ant codeswitchAndroid' to switch the source code to Android. Google Android support: use 'ant codeswitchAndroid' to switch the source code to Android.
@changelog_1134_li @changelog_1136_li
Values of type ARRAY are now sorted as in PostgreSQL. Values of type ARRAY are now sorted as in PostgreSQL.
@changelog_1135_li @changelog_1137_li
In the cluster mode, could not connect if only one server was running (last release only). Fixed. In the cluster mode, could not connect if only one server was running (last release only). Fixed.
@changelog_1136_li @changelog_1138_li
The performance of large CSV operations has been improved. The performance of large CSV operations has been improved.
@changelog_1137_li @changelog_1139_li
Now using custom toString() for most JDBC objects and commands. Now using custom toString() for most JDBC objects and commands.
@changelog_1138_li @changelog_1140_li
Nested temporary views (SELECT * FROM (SELECT ...)) with parameters didn't work in some cases. Fixed. Nested temporary views (SELECT * FROM (SELECT ...)) with parameters didn't work in some cases. Fixed.
@changelog_1139_li @changelog_1141_li
CSV: Using an empty field delimiter didn't work (a workaround was using char(0)). Fixed. CSV: Using an empty field delimiter didn't work (a workaround was using char(0)). Fixed.
@changelog_1140_li @changelog_1142_li
A patch for Apache DDL Utils is available at https://issues.apache.org/jira/browse/DDLUTILS-185 A patch for Apache DDL Utils is available at https://issues.apache.org/jira/browse/DDLUTILS-185
@changelog_1141_li @changelog_1143_li
The default value for h2.emergencySpaceInitial is now 256 KB (to speed up creating encrypted databases) The default value for h2.emergencySpaceInitial is now 256 KB (to speed up creating encrypted databases)
@changelog_1142_li @changelog_1144_li
Eduardo Velasques has translated the H2 Console and the error messages to Brazilian Portuguese. Thanks a lot! Eduardo Velasques has translated the H2 Console and the error messages to Brazilian Portuguese. Thanks a lot!
@changelog_1143_li @changelog_1145_li
Creating a table from GROUP_CONCAT didn't work if the data was longer than 255 characters Creating a table from GROUP_CONCAT didn't work if the data was longer than 255 characters
@changelog_1144_h2 @changelog_1146_h2
Version 1.0.61 (2007-11-10) Version 1.0.61 (2007-11-10)
@changelog_1145_li @changelog_1147_li
The Lucene Fulltext implementation is now compiled and included in the h2.jar. Requires Lucene 2.2. The Lucene Fulltext implementation is now compiled and included in the h2.jar. Requires Lucene 2.2.
@changelog_1146_li @changelog_1148_li
Added more tests. The code coverage is now at 83%. Added more tests. The code coverage is now at 83%.
@changelog_1147_li @changelog_1149_li
ResultSetMetaData.getColumnDisplaySize was calculated as the longest display size for the given result set, but should be the maximum size that fits in the column. Fixed. ResultSetMetaData.getColumnDisplaySize was calculated as the longest display size for the given result set, but should be the maximum size that fits in the column. Fixed.
@changelog_1148_li @changelog_1150_li
The MODE used to be a global setting, now it is a database level setting. The MODE used to be a global setting, now it is a database level setting.
@changelog_1149_li @changelog_1151_li
The database does now always round to the nearest number when converting a floating point to a integer: CAST(1.5 AS INT) will now result in 2, like in PostgreSQL and MySQL. The database does now always round to the nearest number when converting a floating point to a integer: CAST(1.5 AS INT) will now result in 2, like in PostgreSQL and MySQL.
@changelog_1150_li @changelog_1152_li
Math operations using unknown data types (for example -? and ?+?) are now interpreted as decimal. Math operations using unknown data types (for example -? and ?+?) are now interpreted as decimal.
@changelog_1151_li @changelog_1153_li
INSTR, LOCATE: backward searching is not supported by using a negative start position. INSTR, LOCATE: backward searching is not supported by using a negative start position.
@changelog_1152_li @changelog_1154_li
Can now open a database stored in a jar or zip file (for example, jdbc:h2:zip:c:/temp/h2.zip!/test). Can now open a database stored in a jar or zip file (for example, jdbc:h2:zip:c:/temp/h2.zip!/test).
@changelog_1153_li @changelog_1155_li
Files access now uses an API (FileSystem, FileObject), this will simplify adding other file systems and features (for example replication). Files access now uses an API (FileSystem, FileObject), this will simplify adding other file systems and features (for example replication).
@changelog_1154_li @changelog_1156_li
Vlad Alexahin has translated H2 Console to Russian. Thanks a lot! Vlad Alexahin has translated H2 Console to Russian. Thanks a lot!
@changelog_1155_li @changelog_1157_li
Descending indexes are now supported. This is useful when sorting columns descending, for example by creation date. Descending indexes are now supported. This is useful when sorting columns descending, for example by creation date.
@changelog_1156_li @changelog_1158_li
Solved a Java level deadlock in the DatabaseCloser. Solved a Java level deadlock in the DatabaseCloser.
@changelog_1157_li @changelog_1159_li
CREATE SEQUENCE: New option CACHE (number of pre-allocated numbers). New column CACHE in the sequence meta data table. The default cache size is still 32. CREATE SEQUENCE: New option CACHE (number of pre-allocated numbers). New column CACHE in the sequence meta data table. The default cache size is still 32.
@changelog_1158_li @changelog_1160_li
MVCC: The system property h2.mvcc has been removed. A few bugs have been fixed, and new tests have been added. MVCC: The system property h2.mvcc has been removed. A few bugs have been fixed, and new tests have been added.
@changelog_1159_h2 @changelog_1161_h2
Version 1.0.60 (2007-10-20) Version 1.0.60 (2007-10-20)
@changelog_1160_li @changelog_1162_li
JdbcXAConnection: starting a transaction before getting the connection didn't switch off autocommit. JdbcXAConnection: starting a transaction before getting the connection didn't switch off autocommit.
@changelog_1161_li @changelog_1163_li
User defined aggregate functions are not supported. User defined aggregate functions are not supported.
@changelog_1162_li @changelog_1164_li
Server.shutdownTcpServer was blocked when first called with force=false and then force=true. Now documentation is improved, and it is no longer blocked. Server.shutdownTcpServer was blocked when first called with force=false and then force=true. Now documentation is improved, and it is no longer blocked.
@changelog_1163_li @changelog_1165_li
Stack traces did not include the SQL statement in all cases where they could have. Also, stack traces with SQL statement are now shorter. Stack traces did not include the SQL statement in all cases where they could have. Also, stack traces with SQL statement are now shorter.
@changelog_1164_li @changelog_1166_li
Linked tables: now tables in non-default schemas are supported as well Linked tables: now tables in non-default schemas are supported as well
@changelog_1165_li @changelog_1167_li
New Italian translation from PierPaolo Ucchino. Thanks a lot! New Italian translation from PierPaolo Ucchino. Thanks a lot!
@changelog_1166_li @changelog_1168_li
CSV: New methods to set the escape character and field delimiter in the Csv tool and the CSVWRITE and CSVREAD methods. CSV: New methods to set the escape character and field delimiter in the Csv tool and the CSVWRITE and CSVREAD methods.
@changelog_1167_li @changelog_1169_li
Prepared statements could not be used after data definition statements (creating tables and so on). Fixed. Prepared statements could not be used after data definition statements (creating tables and so on). Fixed.
@changelog_1168_li @changelog_1170_li
PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed. PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed.
@changelog_1169_li @changelog_1171_li
The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed. The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed.
@changelog_1170_li @changelog_1172_li
CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example: select * from csvread('jar:file:///c:/temp/test.jar!/test.csv'); CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example: select * from csvread('jar:file:///c:/temp/test.jar!/test.csv');
@changelog_1171_h2 @changelog_1173_h2
Version 1.0.59 (2007-10-03) Version 1.0.59 (2007-10-03)
@changelog_1172_li @changelog_1174_li
When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed. When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed.
@changelog_1173_li @changelog_1175_li
If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed. If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed.
@changelog_1174_li @changelog_1176_li
Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed. Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed.
@changelog_1175_li @changelog_1177_li
A PreparedStatement that was cancelled could not be reused. Fixed. A PreparedStatement that was cancelled could not be reused. Fixed.
@changelog_1176_li @changelog_1178_li
H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow). H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow).
@changelog_1177_li @changelog_1179_li
When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed. When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed.
@changelog_1178_li @changelog_1180_li
Fulltext search is now documented (in the Tutorial). Fulltext search is now documented (in the Tutorial).
@changelog_1179_li @changelog_1181_li
The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed. The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed.
@changelog_1180_li @changelog_1182_li
When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed. When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed.
@changelog_1181_li @changelog_1183_li
When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed. When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed.
@changelog_1182_li @changelog_1184_li
REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used. REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used.
@changelog_1183_li @changelog_1185_li
SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste. SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste.
@changelog_1184_li @changelog_1186_li
When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed. When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed.
@changelog_1185_li @changelog_1187_li
Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed. Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed.
@changelog_1186_li @changelog_1188_li
Compatibility: comparing columns with constants that are out of range does not throw an exception. Compatibility: comparing columns with constants that are out of range does not throw an exception.
@changelog_1187_h2 @changelog_1189_h2
Version 1.0.58 (2007-09-15) Version 1.0.58 (2007-09-15)
@changelog_1188_li @changelog_1190_li
System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi. System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi.
@changelog_1189_li @changelog_1191_li
Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false. Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false.
@changelog_1190_li @changelog_1192_li
The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*). The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*).
@changelog_1191_li @changelog_1193_li
When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used. When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used.
@changelog_1192_li @changelog_1194_li
When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed. When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed.
@changelog_1193_li @changelog_1195_li
Maven 2: new version are now automatically synced with the central repositories. Maven 2: new version are now automatically synced with the central repositories.
@changelog_1194_li @changelog_1196_li
The default value for MAX_MEMORY_UNDO is now 100000. The default value for MAX_MEMORY_UNDO is now 100000.
@changelog_1195_li @changelog_1197_li
The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it. The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it.
@changelog_1196_li @changelog_1198_li
Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..). Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..).
@changelog_1197_li @changelog_1199_li
After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed. After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed.
@changelog_1198_li @changelog_1200_li
About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876">an additionally problem</a> . A workaround has been implemented. About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876">an additionally problem</a> . A workaround has been implemented.
@changelog_1199_li @changelog_1201_li
Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values. Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values.
@changelog_1200_li @changelog_1202_li
Using spaces in column and table aliases was not supported when used inside a view or temporary view. Using spaces in column and table aliases was not supported when used inside a view or temporary view.
@changelog_1201_li @changelog_1203_li
The version (build) number is now included in the manifest file. The version (build) number is now included in the manifest file.
@changelog_1202_li @changelog_1204_li
In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second. In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second.
@changelog_1203_li @changelog_1205_li
The database file sizes are now increased at most 32 MB at any time. The database file sizes are now increased at most 32 MB at any time.
@changelog_1204_li @changelog_1206_li
New method DatabaseEventListener.opened that is called just after opening a database. New method DatabaseEventListener.opened that is called just after opening a database.
@changelog_1205_li @changelog_1207_li
When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query. When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query.
@changelog_1206_li @changelog_1208_li
A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception. A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception.
@changelog_1207_li @changelog_1209_li
User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail. User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail.
@changelog_1208_li @changelog_1210_li
Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data). Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data).
@changelog_1209_li @changelog_1211_li
Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL. Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL.
@changelog_1210_li @changelog_1212_li
For PgServer, character encoding other than UTF-8 did not work correctly. Fixed. For PgServer, character encoding other than UTF-8 did not work correctly. Fixed.
@changelog_1211_li @changelog_1213_li
Using a function in a GROUP BY expression that is used in a view as a condition did not always work. Using a function in a GROUP BY expression that is used in a view as a condition did not always work.
@changelog_1212_h2 @changelog_1214_h2
Version 1.0.57 (2007-08-25) Version 1.0.57 (2007-08-25)
@changelog_1213_li @changelog_1215_li
New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome. New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome.
@changelog_1214_li @changelog_1216_li
The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change. The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change.
@changelog_1215_li @changelog_1217_li
The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time. The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time.
@changelog_1216_li @changelog_1218_li
Opening large read-only databases was very slow. Fixed. Opening large read-only databases was very slow. Fixed.
@changelog_1217_li @changelog_1219_li
New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot! New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot!
@changelog_1218_li @changelog_1220_li
Disabling / enabling referential integrity for a table can now be used inside a transaction. Disabling / enabling referential integrity for a table can now be used inside a transaction.
@changelog_1219_li @changelog_1221_li
Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed. Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed.
@changelog_1220_li @changelog_1222_li
Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed. Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed.
@changelog_1221_li @changelog_1223_li
When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed. When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed.
@changelog_1222_li @changelog_1224_li
When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed. When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed.
@changelog_1223_li @changelog_1225_li
Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table. Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table.
@changelog_1224_li @changelog_1226_li
Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now. Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now.
@changelog_1225_li @changelog_1227_li
Can now incrementally translate the documentation. See also FAQ. Can now incrementally translate the documentation. See also FAQ.
@changelog_1226_li @changelog_1228_li
Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense. Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense.
@changelog_1227_li @changelog_1229_li
The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables. The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables.
@changelog_1228_li @changelog_1230_li
Google translate did not work for the H2 homepage. It should be fixed now. Google translate did not work for the H2 homepage. It should be fixed now.
@changelog_1229_li @changelog_1231_li
The CONVERT function did not work with views when using UNION. The CONVERT function did not work with views when using UNION.
@changelog_1230_li @changelog_1232_li
The build now issues a warning if the source code is switched to the wrong version. The build now issues a warning if the source code is switched to the wrong version.
@changelog_1231_li @changelog_1233_li
The default lock mode is now read committed instead of serialized. The default lock mode is now read committed instead of serialized.
@changelog_1232_li @changelog_1234_li
PG server: data was truncated when reading large VARCHAR columns and decimal columns. PG server: data was truncated when reading large VARCHAR columns and decimal columns.
@changelog_1233_li @changelog_1235_li
PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed. PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed.
@changelog_1234_li @changelog_1236_li
Some file operations didn't work for files in the root directory. Fixed. Some file operations didn't work for files in the root directory. Fixed.
@changelog_1235_li @changelog_1237_li
In the Restore tool, the parameter -file did not work. Fixed. In the Restore tool, the parameter -file did not work. Fixed.
@changelog_1236_li @changelog_1238_li
Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported. Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported.
@changelog_1237_li @changelog_1239_li
The column name C_CURRENT_TIMESTAMP did not work in the last release. The column name C_CURRENT_TIMESTAMP did not work in the last release.
@changelog_1238_li @changelog_1240_li
OpenOffice compatibility: support database name in column names. OpenOffice compatibility: support database name in column names.
@changelog_1239_h2 @changelog_1241_h2
Version 1.0.56 (2007-08-02) Version 1.0.56 (2007-08-02)
@changelog_1240_li @changelog_1242_li
A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete). A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete).
@changelog_1241_li @changelog_1243_li
The error messages (src/main/org/h2/res/_*.*) can now be translated. The error messages (src/main/org/h2/res/_*.*) can now be translated.
@changelog_1242_li @changelog_1244_li
Part of the documentation has been translated to Japanese by Yusuke Fukushima. Part of the documentation has been translated to Japanese by Yusuke Fukushima.
@changelog_1243_li @changelog_1245_li
Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem. Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem.
@changelog_1244_li @changelog_1246_li
The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024. The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024.
@changelog_1245_li @changelog_1247_li
A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details. A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details.
@changelog_1246_li @changelog_1248_li
The experimental H2 ODBC driver has been removed. The experimental H2 ODBC driver has been removed.
@changelog_1247_li @changelog_1249_li
The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000. The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000.
@changelog_1248_li @changelog_1250_li
Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used. Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used.
@changelog_1249_li @changelog_1251_li
The old view implementation has been removed. The old view implementation has been removed.
@changelog_1250_li @changelog_1252_li
The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used. The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used.
@changelog_1251_li @changelog_1253_li
H2 Console: In the last release, the shutdown button did not work. Fixed. H2 Console: In the last release, the shutdown button did not work. Fixed.
@changelog_1252_li @changelog_1254_li
Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE. Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE.
@changelog_1253_li @changelog_1255_li
The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed. The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed.
@changelog_1254_li @changelog_1256_li
Calculation of cache memory usage has been improved. Calculation of cache memory usage has been improved.
@changelog_1255_li @changelog_1257_li
In some situations record were released too late from the cache. Fixed. In some situations record were released too late from the cache. Fixed.
@changelog_1256_li @changelog_1258_li
The cache size is now measured in KB instead of blocks of 128 byte. The cache size is now measured in KB instead of blocks of 128 byte.
@changelog_1257_li @changelog_1259_li
CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables. CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables.
@changelog_1258_li @changelog_1260_li
The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update. The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update.
@changelog_1259_li @changelog_1261_li
The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row. The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row.
@changelog_1260_li @changelog_1262_li
Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot. Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot.
@changelog_1261_li @changelog_1263_li
Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals. Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals.
@changelog_1262_li @changelog_1264_li
Documentation: the source code in 'Compacting a Database' was incorrect. Fixed. Documentation: the source code in 'Compacting a Database' was incorrect. Fixed.
@changelog_1263_li @changelog_1265_li
In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT. In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT.
@changelog_1264_li @changelog_1266_li
Views using UNION did not work correctly. Fixed. Views using UNION did not work correctly. Fixed.
@changelog_1265_li @changelog_1267_li
Function tables did not work with views and EXPLAIN. Fixed. Function tables did not work with views and EXPLAIN. Fixed.
@download_1000_h1 @download_1000_h1
...@@ -7415,7 +7421,7 @@ When using Java Web Start / JNLP (Java Network Launch Protocol), permissions tag ...@@ -7415,7 +7421,7 @@ When using Java Web Start / JNLP (Java Network Launch Protocol), permissions tag
Using a Connection Pool Using a Connection Pool
@tutorial_1179_p @tutorial_1179_p
For many databases, opening a connection is slow, and it is a good idea to use a connection pool to re-use connections. For H2 however opening a connection usually is fast if the database is already open. Using a connection pool manager for H2 actually slows down the process a bit, except if file encryption is used (in this case opening a connection is about half as fast are using a connection pool). A simple connection pool is: <a href="http://www.source-code.biz/snippets/java/8.htm">Mini Connection Pool Manager</a> . There are other, more complex connection pools available, for example <a href="http://jakarta.apache.org/commons/dbcp/">DBCP</a> . For many databases, opening a connection is slow, and it is a good idea to use a connection pool to re-use connections. For H2 however opening a connection usually is fast if the database is already open. Using a connection pool manager for H2 actually slows down the process a bit, except if file encryption is used (in this case opening a connection is about half as fast as using a connection pool). A simple connection pool manager is included in H2. It is based on the <a href="http://www.source-code.biz/snippets/java/8.htm">Mini Connection Pool Manager</a> from Christian d'Heureuse. There are other, more complex connection pools available, for example <a href="http://jakarta.apache.org/commons/dbcp/">DBCP</a> . The build-in connection pool manager is used as follows:
@tutorial_1180_h2 @tutorial_1180_h2
Fulltext Search Fulltext Search
......
h2/src/docsrc/text/_docs_ja.utf8.txt
浏览文件 @ 36e4a4ce
...@@ -511,7 +511,7 @@ PGプロトコルサポートの制限 ...@@ -511,7 +511,7 @@ PGプロトコルサポートの制限
#Create a .dll file using (change the version accordingly): <code>ikvmc.exe -target:library -version:1.0.68.0 h2.jar</code> #Create a .dll file using (change the version accordingly): <code>ikvmc.exe -target:library -version:1.0.68.0 h2.jar</code>
@advanced_1170_p @advanced_1170_p
#If you want your C# application use H2, you need to add the h2.dll and the IKVM.OpenJDK.ClassLibrary.dll to your C# solution. See also the short <a href="http://groups.google.com/group/h2-database/browse_thread/thread/400bc5a9bc9de3fd">C# source code example</a> . #If you want your C# application use H2, you need to add the h2.dll and the IKVM.OpenJDK.ClassLibrary.dll to your C# solution. Here some sample code:
@advanced_1171_h2 @advanced_1171_h2
ACID ACID
...@@ -991,795 +991,801 @@ Centralリポジトリの利用 ...@@ -991,795 +991,801 @@ Centralリポジトリの利用
#Next Version (unreleased) #Next Version (unreleased)
@changelog_1002_li @changelog_1002_li
#.
@changelog_1003_h2
#Version 1.0.68 (2008-03-18)
@changelog_1004_li
#Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000. #Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000.
@changelog_1003_li @changelog_1005_li
#A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked. #A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked.
@changelog_1004_li @changelog_1006_li
#Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory. #Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory.
@changelog_1005_li @changelog_1007_li
#ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction. #ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction.
@changelog_1006_li @changelog_1008_li
#New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled. #New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled.
@changelog_1007_li @changelog_1009_li
#When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed. #When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed.
@changelog_1008_li @changelog_1010_li
#Improved performance when using lob files in directories (however this is still disabled by default) #Improved performance when using lob files in directories (however this is still disabled by default)
@changelog_1009_li @changelog_1011_li
#H2 Console: autocomplete didn't work with very large scripts. Fixed. #H2 Console: autocomplete didn't work with very large scripts. Fixed.
@changelog_1010_li @changelog_1012_li
#Fulltext search: new method SEARCH_DATA that returns the column names and primary keys as arrays. #Fulltext search: new method SEARCH_DATA that returns the column names and primary keys as arrays.
@changelog_1011_li @changelog_1013_li
#New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true. #New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true.
@changelog_1012_li @changelog_1014_li
#When using multi-version concurrency (MVCC=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session. #When using multi-version concurrency (MVCC=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session.
@changelog_1013_li @changelog_1015_li
#H2 Console: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr. #H2 Console: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr.
@changelog_1014_li @changelog_1016_li
#H2 Console: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu. #H2 Console: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu.
@changelog_1015_li @changelog_1017_li
#H2 Console: the start window works better with IKVM #H2 Console: the start window works better with IKVM
@changelog_1016_li @changelog_1018_li
#H2 Console: improved compatibility with Safari (Safari requires keep-alive) #H2 Console: improved compatibility with Safari (Safari requires keep-alive)
@changelog_1017_li @changelog_1019_li
#Random: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem. #Random: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem.
@changelog_1018_li @changelog_1020_li
#SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException. #SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException.
@changelog_1019_li @changelog_1021_li
#When using a view, the column precision was changed to the default scale for some data types. #When using a view, the column precision was changed to the default scale for some data types.
@changelog_1020_li @changelog_1022_li
#CSVWRITE now supports a 'null string' that is used for parsing and writing NULL. #CSVWRITE now supports a 'null string' that is used for parsing and writing NULL.
@changelog_1021_li @changelog_1023_li
#Some long running queries could not be cancelled. #Some long running queries could not be cancelled.
@changelog_1022_li @changelog_1024_li
#Queries with many outer join tables were very slow. Fixed. #Queries with many outer join tables were very slow. Fixed.
@changelog_1023_li @changelog_1025_li
#The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache. #The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache.
@changelog_1024_li @changelog_1026_li
#UPDATE SET column=DEFAULT is now supported. #UPDATE SET column=DEFAULT is now supported.
@changelog_1025_h2 @changelog_1027_h2
#Version 1.0.67 (2008-02-22) #Version 1.0.67 (2008-02-22)
@changelog_1026_li @changelog_1028_li
#New function FILE_READ to read a file or from an URL. Both binary and text data is supported. #New function FILE_READ to read a file or from an URL. Both binary and text data is supported.
@changelog_1027_li @changelog_1029_li
#CREATE TABLE AS SELECT now supports specifying the column list and data types. #CREATE TABLE AS SELECT now supports specifying the column list and data types.
@changelog_1028_li @changelog_1030_li
#Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock. #Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock.
@changelog_1029_li @changelog_1031_li
#A user now has all rights on his own local temporary tables. #A user now has all rights on his own local temporary tables.
@changelog_1030_li @changelog_1032_li
#The CSV tool now supports a custom lineSeparator. #The CSV tool now supports a custom lineSeparator.
@changelog_1031_li @changelog_1033_li
#When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering. #When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering.
@changelog_1032_li @changelog_1034_li
#The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen! #The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen!
@changelog_1033_li @changelog_1035_li
#Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger. #Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger.
@changelog_1034_li @changelog_1036_li
#Opening databases with ACCESS_MODE_DATA=r is now supported. In this case the database is read-only, but the files don't not need to be read-only. #Opening databases with ACCESS_MODE_DATA=r is now supported. In this case the database is read-only, but the files don't not need to be read-only.
@changelog_1035_li @changelog_1037_li
#Security: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks. #Security: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks.
@changelog_1036_li @changelog_1038_li
#The value cache is now a soft reference cache. This should help save memory. #The value cache is now a soft reference cache. This should help save memory.
@changelog_1037_li @changelog_1039_li
#CREATE INDEX on a table with many rows could run out of memory. Fixed. #CREATE INDEX on a table with many rows could run out of memory. Fixed.
@changelog_1038_li @changelog_1040_li
#Large result sets are now a bit faster. #Large result sets are now a bit faster.
@changelog_1039_li @changelog_1041_li
#ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions). #ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions).
@changelog_1040_li @changelog_1042_li
#When setting the base directory on the command line, the user directory prefix ('~') was ignored. #When setting the base directory on the command line, the user directory prefix ('~') was ignored.
@changelog_1041_li @changelog_1043_li
#The DbStarter servlet didn't start the TCP listener even if configured. #The DbStarter servlet didn't start the TCP listener even if configured.
@changelog_1042_li @changelog_1044_li
#Statement.setQueryTimeout() is now supported. #Statement.setQueryTimeout() is now supported.
@changelog_1043_li @changelog_1045_li
#New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout. #New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout.
@changelog_1044_li @changelog_1046_li
#Changing the transaction log level (SET LOG) is now written to the trace file by default. #Changing the transaction log level (SET LOG) is now written to the trace file by default.
@changelog_1045_li @changelog_1047_li
#In a SQL script, primary key constraints are now ordered before foreign key constraints. #In a SQL script, primary key constraints are now ordered before foreign key constraints.
@changelog_1046_li @changelog_1048_li
#It was not possible to create a referential constraint to a table in a different schema in some situations. #It was not possible to create a referential constraint to a table in a different schema in some situations.
@changelog_1047_li @changelog_1049_li
#The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case. #The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case.
@changelog_1048_h2 @changelog_1050_h2
#Version 1.0.66 (2008-02-02) #Version 1.0.66 (2008-02-02)
@changelog_1049_li @changelog_1051_li
#There is a new online error analyzer tool. #There is a new online error analyzer tool.
@changelog_1050_li @changelog_1052_li
#H2 Console: stack traces are now links to the source code in the source repository (H2 database only). #H2 Console: stack traces are now links to the source code in the source repository (H2 database only).
@changelog_1051_li @changelog_1053_li
#CHAR data type equals comparison was case insensitive instead of case sensitive. #CHAR data type equals comparison was case insensitive instead of case sensitive.
@changelog_1052_li @changelog_1054_li
#The exception 'Value too long for column' now includes the data. #The exception 'Value too long for column' now includes the data.
@changelog_1053_li @changelog_1055_li
#The table name was missing in the documentation of CREATE INDEX. #The table name was missing in the documentation of CREATE INDEX.
@changelog_1054_li @changelog_1056_li
#Better support for IKVM (www.ikvm.net): the H2 Console now opens a browser window. #Better support for IKVM (www.ikvm.net): the H2 Console now opens a browser window.
@changelog_1055_li @changelog_1057_li
#The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions. #The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions.
@changelog_1056_li @changelog_1058_li
#The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed. #The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed.
@changelog_1057_li @changelog_1059_li
#The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far). #The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far).
@changelog_1058_li @changelog_1060_li
#The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice. #The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice.
@changelog_1059_li @changelog_1061_li
#Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading. #Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading.
@changelog_1060_li @changelog_1062_li
#For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string). #For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string).
@changelog_1061_li @changelog_1063_li
#Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster. #Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster.
@changelog_1062_li @changelog_1064_li
#Variables: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables. #Variables: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables.
@changelog_1063_li @changelog_1065_li
#Fulltext search is now supported in named in-memory databases. #Fulltext search is now supported in named in-memory databases.
@changelog_1064_li @changelog_1066_li
#H2 Console: multiple consecutive spaces in the setting name did not work. Fixed. #H2 Console: multiple consecutive spaces in the setting name did not work. Fixed.
@changelog_1065_h2 @changelog_1067_h2
#Version 1.0.65 (2008-01-18) #Version 1.0.65 (2008-01-18)
@changelog_1066_li @changelog_1068_li
#The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6). #The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6).
@changelog_1067_li @changelog_1069_li
#A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER=1 to the database URL in cases where it should not have been required. #A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER=1 to the database URL in cases where it should not have been required.
@changelog_1068_li @changelog_1070_li
#The performance for DROP and DROP ALL OBJECTS has been improved. #The performance for DROP and DROP ALL OBJECTS has been improved.
@changelog_1069_li @changelog_1071_li
#The ChangePassword API has been improved. #The ChangePassword API has been improved.
@changelog_1070_li @changelog_1072_li
#User defined variables are now supported. Examples: SET @VAR=10;CALL @VAR. This can be used for running totals as in: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10) #User defined variables are now supported. Examples: SET @VAR=10;CALL @VAR. This can be used for running totals as in: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10)
@changelog_1071_li @changelog_1073_li
#The Ukrainian translation has been improved. #The Ukrainian translation has been improved.
@changelog_1072_li @changelog_1074_li
#CALL statements can now be used in batch updates and called using Statement.executeUpdate. #CALL statements can now be used in batch updates and called using Statement.executeUpdate.
@changelog_1073_li @changelog_1075_li
#New read-only setting CREATE_BUILD (the build number of the database engine that created the database). #New read-only setting CREATE_BUILD (the build number of the database engine that created the database).
@changelog_1074_li @changelog_1076_li
#The optimizer did not use multi column indexes for range queries in some cases. Fixed. #The optimizer did not use multi column indexes for range queries in some cases. Fixed.
@changelog_1075_li @changelog_1077_li
#The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified. #The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified.
@changelog_1076_li @changelog_1078_li
#The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress. #The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress.
@changelog_1077_li @changelog_1079_li
#Batch update: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed. #Batch update: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed.
@changelog_1078_li @changelog_1080_li
#Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed. #Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed.
@changelog_1079_li @changelog_1081_li
#The performance for large result sets in the server mode has been improved. #The performance for large result sets in the server mode has been improved.
@changelog_1080_li @changelog_1082_li
#The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize. #The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize.
@changelog_1081_li @changelog_1083_li
#The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used. #The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used.
@changelog_1082_li @changelog_1084_li
#The SCRIPT command did not split up CLOB data correctly. Fixed. #The SCRIPT command did not split up CLOB data correctly. Fixed.
@changelog_1083_li @changelog_1085_li
#Optimization for single column distinct queries with an index: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false. #Optimization for single column distinct queries with an index: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false.
@changelog_1084_li @changelog_1086_li
#DROP ALL OBJECTS did not drop user defined aggregate functions and domains. #DROP ALL OBJECTS did not drop user defined aggregate functions and domains.
@changelog_1085_li @changelog_1087_li
#PostgreSQL compatibility: COUNT(T.*) is now supported. #PostgreSQL compatibility: COUNT(T.*) is now supported.
@changelog_1086_li @changelog_1088_li
#LIKE comparisons are now faster. #LIKE comparisons are now faster.
@changelog_1087_li @changelog_1089_li
#Encrypted databases are now faster. #Encrypted databases are now faster.
@changelog_1088_h2 @changelog_1090_h2
#Version 1.0.64 (2007-12-27) #Version 1.0.64 (2007-12-27)
@changelog_1089_li @changelog_1091_li
#3-way union queries with prepared statement or views could return the wrong results. Fixed. #3-way union queries with prepared statement or views could return the wrong results. Fixed.
@changelog_1090_li @changelog_1092_li
#The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed. #The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed.
@changelog_1091_li @changelog_1093_li
#CSV tool: some escape/separator character combinations did not work. Fixed. #CSV tool: some escape/separator character combinations did not work. Fixed.
@changelog_1092_li @changelog_1094_li
#CSV tool: the character # could not be used as a separator when reading. #CSV tool: the character # could not be used as a separator when reading.
@changelog_1093_li @changelog_1095_li
#Recovery: when the index file is corrupt, now the database deletes it and re-creates it automatically. #Recovery: when the index file is corrupt, now the database deletes it and re-creates it automatically.
@changelog_1094_li @changelog_1096_li
#The MVCC mode did not work well with in-memory databases. Fixed. #The MVCC mode did not work well with in-memory databases. Fixed.
@changelog_1095_li @changelog_1097_li
#The FTP server now supports a event listener. Thanks Fulvio Biondi for the help! #The FTP server now supports a event listener. Thanks Fulvio Biondi for the help!
@changelog_1096_li @changelog_1098_li
#New system function CANCEL_SESSION to cancel the currently executing statement of another session. #New system function CANCEL_SESSION to cancel the currently executing statement of another session.
@changelog_1097_li @changelog_1099_li
#The database now supports an exclusive mode. In exclusive mode, new connections are rejected. #The database now supports an exclusive mode. In exclusive mode, new connections are rejected.
@changelog_1098_li @changelog_1100_li
#H2 Console: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '=null'. #H2 Console: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '=null'.
@changelog_1099_li @changelog_1101_li
#New built-in functions RPAD and LPAD. #New built-in functions RPAD and LPAD.
@changelog_1100_li @changelog_1102_li
#New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session. #New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session.
@changelog_1101_li @changelog_1103_li
#The Ukrainian translation was not working in the last release. Fixed. #The Ukrainian translation was not working in the last release. Fixed.
@changelog_1102_li @changelog_1104_li
#Creating many tables (many hundreds) was slow. Fixed. #Creating many tables (many hundreds) was slow. Fixed.
@changelog_1103_li @changelog_1105_li
#Opening a database with many indexes (thousands) was slow. Fixed. #Opening a database with many indexes (thousands) was slow. Fixed.
@changelog_1104_li @changelog_1106_li
#H2 Console / autocomplete: Ctrl+Space now shows the list in all modes. #H2 Console / autocomplete: Ctrl+Space now shows the list in all modes.
@changelog_1105_li @changelog_1107_li
#The method Trigger.init has been changed: the parameters 'before' and 'type', have been added to the init method. #The method Trigger.init has been changed: the parameters 'before' and 'type', have been added to the init method.
@changelog_1106_li @changelog_1108_li
#The performance has been improved for ResultSet methods with column name. #The performance has been improved for ResultSet methods with column name.
@changelog_1107_li @changelog_1109_li
#A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed. #A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed.
@changelog_1108_li @changelog_1110_li
#The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar! #The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar!
@changelog_1109_li @changelog_1111_li
#Improved debugging support: toString methods of most object now return a meaningful text. #Improved debugging support: toString methods of most object now return a meaningful text.
@changelog_1110_li @changelog_1112_li
#The classes DbStarter and WebServlet have been moved to src/main. #The classes DbStarter and WebServlet have been moved to src/main.
@changelog_1111_li @changelog_1113_li
#The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement. #The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement.
@changelog_1112_li @changelog_1114_li
#Loading classes and calling methods can be restricted using the new system property h2.allowedClasses. #Loading classes and calling methods can be restricted using the new system property h2.allowedClasses.
@changelog_1113_li @changelog_1115_li
#The database could not be used in Java applets due to security exceptions. Fixed. #The database could not be used in Java applets due to security exceptions. Fixed.
@changelog_1114_h2 @changelog_1116_h2
#Version 1.0.63 (2007-12-02) #Version 1.0.63 (2007-12-02)
@changelog_1115_li @changelog_1117_li
#The SecurePassword example has been improved. #The SecurePassword example has been improved.
@changelog_1116_li @changelog_1118_li
#In timezones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed. #In timezones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed.
@changelog_1117_li @changelog_1119_li
#The native fulltext search was not working properly after re-connecting. #The native fulltext search was not working properly after re-connecting.
@changelog_1118_li @changelog_1120_li
#Improved FTP server: now the PORT command is supported. #Improved FTP server: now the PORT command is supported.
@changelog_1119_li @changelog_1121_li
#Temporary views (FROM(...)) with UNION didn't work if nested. Fixed. #Temporary views (FROM(...)) with UNION didn't work if nested. Fixed.
@changelog_1120_li @changelog_1122_li
#Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin=true #Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin=true
@changelog_1121_li @changelog_1123_li
#The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot! #The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot!
@changelog_1122_li @changelog_1124_li
#New function TABLE_DISTINCT. #New function TABLE_DISTINCT.
@changelog_1123_li @changelog_1125_li
#Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly. #Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly.
@changelog_1124_li @changelog_1126_li
#Certain setting in the Server didn't work (http://code.google.com/p/h2database/issues/detail?id=7). #Certain setting in the Server didn't work (http://code.google.com/p/h2database/issues/detail?id=7).
@changelog_1125_h2 @changelog_1127_h2
#Version 1.0.62 (2007-11-25) #Version 1.0.62 (2007-11-25)
@changelog_1126_li @changelog_1128_li
#Large updates and deletes are now supported by buffering data to disk if required. The threshold is currently set to 100'000 bytes and can be changed using SET MAX_OPERATION_MEMORY or using by appending ;MAX_OPERATION_MEMORY=.. to the database URL. See also the docs. #Large updates and deletes are now supported by buffering data to disk if required. The threshold is currently set to 100'000 bytes and can be changed using SET MAX_OPERATION_MEMORY or using by appending ;MAX_OPERATION_MEMORY=.. to the database URL. See also the docs.
@changelog_1127_li @changelog_1129_li
#MVCC: now an exception is thrown when an application tries to change the MVCC setting while the database is already open. #MVCC: now an exception is thrown when an application tries to change the MVCC setting while the database is already open.
@changelog_1128_li @changelog_1130_li
#Referential integrity checks didn't lock the referenced table, and thus could read uncommitted rows of other connections. In that way the referential constraints could get violated (except when using MVCC). #Referential integrity checks didn't lock the referenced table, and thus could read uncommitted rows of other connections. In that way the referential constraints could get violated (except when using MVCC).
@changelog_1129_li @changelog_1131_li
#Renaming or dropping a user with a schema, or removing the admin property of that user made the schema inaccessible after re-opening the database. Fixed. #Renaming or dropping a user with a schema, or removing the admin property of that user made the schema inaccessible after re-opening the database. Fixed.
@changelog_1130_li @changelog_1132_li
#The H2 Console now also support the command line option -ifExists when started from the Server tool, but only when connecting to H2 databases. #The H2 Console now also support the command line option -ifExists when started from the Server tool, but only when connecting to H2 databases.
@changelog_1131_li @changelog_1133_li
#Duplicate column names were not detected when renaming columns. Fixed. #Duplicate column names were not detected when renaming columns. Fixed.
@changelog_1132_li @changelog_1134_li
#The console did not display multiple embedded spaces in text correctly. Fixed. #The console did not display multiple embedded spaces in text correctly. Fixed.
@changelog_1133_li @changelog_1135_li
#Google Android support: use 'ant codeswitchAndroid' to switch the source code to Android. #Google Android support: use 'ant codeswitchAndroid' to switch the source code to Android.
@changelog_1134_li @changelog_1136_li
#Values of type ARRAY are now sorted as in PostgreSQL. #Values of type ARRAY are now sorted as in PostgreSQL.
@changelog_1135_li @changelog_1137_li
#In the cluster mode, could not connect if only one server was running (last release only). Fixed. #In the cluster mode, could not connect if only one server was running (last release only). Fixed.
@changelog_1136_li @changelog_1138_li
#The performance of large CSV operations has been improved. #The performance of large CSV operations has been improved.
@changelog_1137_li @changelog_1139_li
#Now using custom toString() for most JDBC objects and commands. #Now using custom toString() for most JDBC objects and commands.
@changelog_1138_li @changelog_1140_li
#Nested temporary views (SELECT * FROM (SELECT ...)) with parameters didn't work in some cases. Fixed. #Nested temporary views (SELECT * FROM (SELECT ...)) with parameters didn't work in some cases. Fixed.
@changelog_1139_li @changelog_1141_li
#CSV: Using an empty field delimiter didn't work (a workaround was using char(0)). Fixed. #CSV: Using an empty field delimiter didn't work (a workaround was using char(0)). Fixed.
@changelog_1140_li @changelog_1142_li
#A patch for Apache DDL Utils is available at https://issues.apache.org/jira/browse/DDLUTILS-185 #A patch for Apache DDL Utils is available at https://issues.apache.org/jira/browse/DDLUTILS-185
@changelog_1141_li @changelog_1143_li
#The default value for h2.emergencySpaceInitial is now 256 KB (to speed up creating encrypted databases) #The default value for h2.emergencySpaceInitial is now 256 KB (to speed up creating encrypted databases)
@changelog_1142_li @changelog_1144_li
#Eduardo Velasques has translated the H2 Console and the error messages to Brazilian Portuguese. Thanks a lot! #Eduardo Velasques has translated the H2 Console and the error messages to Brazilian Portuguese. Thanks a lot!
@changelog_1143_li @changelog_1145_li
#Creating a table from GROUP_CONCAT didn't work if the data was longer than 255 characters #Creating a table from GROUP_CONCAT didn't work if the data was longer than 255 characters
@changelog_1144_h2 @changelog_1146_h2
#Version 1.0.61 (2007-11-10) #Version 1.0.61 (2007-11-10)
@changelog_1145_li @changelog_1147_li
#The Lucene Fulltext implementation is now compiled and included in the h2.jar. Requires Lucene 2.2. #The Lucene Fulltext implementation is now compiled and included in the h2.jar. Requires Lucene 2.2.
@changelog_1146_li @changelog_1148_li
#Added more tests. The code coverage is now at 83%. #Added more tests. The code coverage is now at 83%.
@changelog_1147_li @changelog_1149_li
#ResultSetMetaData.getColumnDisplaySize was calculated as the longest display size for the given result set, but should be the maximum size that fits in the column. Fixed. #ResultSetMetaData.getColumnDisplaySize was calculated as the longest display size for the given result set, but should be the maximum size that fits in the column. Fixed.
@changelog_1148_li @changelog_1150_li
#The MODE used to be a global setting, now it is a database level setting. #The MODE used to be a global setting, now it is a database level setting.
@changelog_1149_li @changelog_1151_li
#The database does now always round to the nearest number when converting a floating point to a integer: CAST(1.5 AS INT) will now result in 2, like in PostgreSQL and MySQL. #The database does now always round to the nearest number when converting a floating point to a integer: CAST(1.5 AS INT) will now result in 2, like in PostgreSQL and MySQL.
@changelog_1150_li @changelog_1152_li
#Math operations using unknown data types (for example -? and ?+?) are now interpreted as decimal. #Math operations using unknown data types (for example -? and ?+?) are now interpreted as decimal.
@changelog_1151_li @changelog_1153_li
#INSTR, LOCATE: backward searching is not supported by using a negative start position. #INSTR, LOCATE: backward searching is not supported by using a negative start position.
@changelog_1152_li @changelog_1154_li
#Can now open a database stored in a jar or zip file (for example, jdbc:h2:zip:c:/temp/h2.zip!/test). #Can now open a database stored in a jar or zip file (for example, jdbc:h2:zip:c:/temp/h2.zip!/test).
@changelog_1153_li @changelog_1155_li
#Files access now uses an API (FileSystem, FileObject), this will simplify adding other file systems and features (for example replication). #Files access now uses an API (FileSystem, FileObject), this will simplify adding other file systems and features (for example replication).
@changelog_1154_li @changelog_1156_li
#Vlad Alexahin has translated H2 Console to Russian. Thanks a lot! #Vlad Alexahin has translated H2 Console to Russian. Thanks a lot!
@changelog_1155_li @changelog_1157_li
#Descending indexes are now supported. This is useful when sorting columns descending, for example by creation date. #Descending indexes are now supported. This is useful when sorting columns descending, for example by creation date.
@changelog_1156_li @changelog_1158_li
#Solved a Java level deadlock in the DatabaseCloser. #Solved a Java level deadlock in the DatabaseCloser.
@changelog_1157_li @changelog_1159_li
#CREATE SEQUENCE: New option CACHE (number of pre-allocated numbers). New column CACHE in the sequence meta data table. The default cache size is still 32. #CREATE SEQUENCE: New option CACHE (number of pre-allocated numbers). New column CACHE in the sequence meta data table. The default cache size is still 32.
@changelog_1158_li @changelog_1160_li
#MVCC: The system property h2.mvcc has been removed. A few bugs have been fixed, and new tests have been added. #MVCC: The system property h2.mvcc has been removed. A few bugs have been fixed, and new tests have been added.
@changelog_1159_h2 @changelog_1161_h2
#Version 1.0.60 (2007-10-20) #Version 1.0.60 (2007-10-20)
@changelog_1160_li @changelog_1162_li
#JdbcXAConnection: starting a transaction before getting the connection didn't switch off autocommit. #JdbcXAConnection: starting a transaction before getting the connection didn't switch off autocommit.
@changelog_1161_li @changelog_1163_li
#User defined aggregate functions are not supported. #User defined aggregate functions are not supported.
@changelog_1162_li @changelog_1164_li
#Server.shutdownTcpServer was blocked when first called with force=false and then force=true. Now documentation is improved, and it is no longer blocked. #Server.shutdownTcpServer was blocked when first called with force=false and then force=true. Now documentation is improved, and it is no longer blocked.
@changelog_1163_li @changelog_1165_li
#Stack traces did not include the SQL statement in all cases where they could have. Also, stack traces with SQL statement are now shorter. #Stack traces did not include the SQL statement in all cases where they could have. Also, stack traces with SQL statement are now shorter.
@changelog_1164_li @changelog_1166_li
#Linked tables: now tables in non-default schemas are supported as well #Linked tables: now tables in non-default schemas are supported as well
@changelog_1165_li @changelog_1167_li
#New Italian translation from PierPaolo Ucchino. Thanks a lot! #New Italian translation from PierPaolo Ucchino. Thanks a lot!
@changelog_1166_li @changelog_1168_li
#CSV: New methods to set the escape character and field delimiter in the Csv tool and the CSVWRITE and CSVREAD methods. #CSV: New methods to set the escape character and field delimiter in the Csv tool and the CSVWRITE and CSVREAD methods.
@changelog_1167_li @changelog_1169_li
#Prepared statements could not be used after data definition statements (creating tables and so on). Fixed. #Prepared statements could not be used after data definition statements (creating tables and so on). Fixed.
@changelog_1168_li @changelog_1170_li
#PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed. #PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed.
@changelog_1169_li @changelog_1171_li
#The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed. #The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed.
@changelog_1170_li @changelog_1172_li
#CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example: select * from csvread('jar:file:///c:/temp/test.jar!/test.csv'); #CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example: select * from csvread('jar:file:///c:/temp/test.jar!/test.csv');
@changelog_1171_h2 @changelog_1173_h2
#Version 1.0.59 (2007-10-03) #Version 1.0.59 (2007-10-03)
@changelog_1172_li @changelog_1174_li
#When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed. #When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed.
@changelog_1173_li @changelog_1175_li
#If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed. #If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed.
@changelog_1174_li @changelog_1176_li
#Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed. #Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed.
@changelog_1175_li @changelog_1177_li
#A PreparedStatement that was cancelled could not be reused. Fixed. #A PreparedStatement that was cancelled could not be reused. Fixed.
@changelog_1176_li @changelog_1178_li
#H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow). #H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow).
@changelog_1177_li @changelog_1179_li
#When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed. #When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed.
@changelog_1178_li @changelog_1180_li
#Fulltext search is now documented (in the Tutorial). #Fulltext search is now documented (in the Tutorial).
@changelog_1179_li @changelog_1181_li
#The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed. #The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed.
@changelog_1180_li @changelog_1182_li
#When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed. #When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed.
@changelog_1181_li @changelog_1183_li
#When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed. #When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed.
@changelog_1182_li @changelog_1184_li
#REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used. #REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used.
@changelog_1183_li @changelog_1185_li
#SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste. #SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste.
@changelog_1184_li @changelog_1186_li
#When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed. #When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed.
@changelog_1185_li @changelog_1187_li
#Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed. #Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed.
@changelog_1186_li @changelog_1188_li
#Compatibility: comparing columns with constants that are out of range does not throw an exception. #Compatibility: comparing columns with constants that are out of range does not throw an exception.
@changelog_1187_h2 @changelog_1189_h2
#Version 1.0.58 (2007-09-15) #Version 1.0.58 (2007-09-15)
@changelog_1188_li @changelog_1190_li
#System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi. #System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi.
@changelog_1189_li @changelog_1191_li
#Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false. #Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false.
@changelog_1190_li @changelog_1192_li
#The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*). #The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*).
@changelog_1191_li @changelog_1193_li
#When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used. #When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used.
@changelog_1192_li @changelog_1194_li
#When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed. #When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed.
@changelog_1193_li @changelog_1195_li
#Maven 2: new version are now automatically synced with the central repositories. #Maven 2: new version are now automatically synced with the central repositories.
@changelog_1194_li @changelog_1196_li
#The default value for MAX_MEMORY_UNDO is now 100000. #The default value for MAX_MEMORY_UNDO is now 100000.
@changelog_1195_li @changelog_1197_li
#The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it. #The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it.
@changelog_1196_li @changelog_1198_li
#Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..). #Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..).
@changelog_1197_li @changelog_1199_li
#After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed. #After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed.
@changelog_1198_li @changelog_1200_li
#About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876">an additionally problem</a> . A workaround has been implemented. #About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876">an additionally problem</a> . A workaround has been implemented.
@changelog_1199_li @changelog_1201_li
#Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values. #Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values.
@changelog_1200_li @changelog_1202_li
#Using spaces in column and table aliases was not supported when used inside a view or temporary view. #Using spaces in column and table aliases was not supported when used inside a view or temporary view.
@changelog_1201_li @changelog_1203_li
#The version (build) number is now included in the manifest file. #The version (build) number is now included in the manifest file.
@changelog_1202_li @changelog_1204_li
#In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second. #In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second.
@changelog_1203_li @changelog_1205_li
#The database file sizes are now increased at most 32 MB at any time. #The database file sizes are now increased at most 32 MB at any time.
@changelog_1204_li @changelog_1206_li
#New method DatabaseEventListener.opened that is called just after opening a database. #New method DatabaseEventListener.opened that is called just after opening a database.
@changelog_1205_li @changelog_1207_li
#When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query. #When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query.
@changelog_1206_li @changelog_1208_li
#A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception. #A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception.
@changelog_1207_li @changelog_1209_li
#User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail. #User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail.
@changelog_1208_li @changelog_1210_li
#Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data). #Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data).
@changelog_1209_li @changelog_1211_li
#Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL. #Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL.
@changelog_1210_li @changelog_1212_li
#For PgServer, character encoding other than UTF-8 did not work correctly. Fixed. #For PgServer, character encoding other than UTF-8 did not work correctly. Fixed.
@changelog_1211_li @changelog_1213_li
#Using a function in a GROUP BY expression that is used in a view as a condition did not always work. #Using a function in a GROUP BY expression that is used in a view as a condition did not always work.
@changelog_1212_h2 @changelog_1214_h2
#Version 1.0.57 (2007-08-25) #Version 1.0.57 (2007-08-25)
@changelog_1213_li @changelog_1215_li
#New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome. #New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome.
@changelog_1214_li @changelog_1216_li
#The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change. #The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change.
@changelog_1215_li @changelog_1217_li
#The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time. #The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time.
@changelog_1216_li @changelog_1218_li
#Opening large read-only databases was very slow. Fixed. #Opening large read-only databases was very slow. Fixed.
@changelog_1217_li @changelog_1219_li
#New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot! #New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot!
@changelog_1218_li @changelog_1220_li
#Disabling / enabling referential integrity for a table can now be used inside a transaction. #Disabling / enabling referential integrity for a table can now be used inside a transaction.
@changelog_1219_li @changelog_1221_li
#Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed. #Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed.
@changelog_1220_li @changelog_1222_li
#Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed. #Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed.
@changelog_1221_li @changelog_1223_li
#When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed. #When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed.
@changelog_1222_li @changelog_1224_li
#When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed. #When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed.
@changelog_1223_li @changelog_1225_li
#Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table. #Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table.
@changelog_1224_li @changelog_1226_li
#Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now. #Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now.
@changelog_1225_li @changelog_1227_li
#Can now incrementally translate the documentation. See also FAQ. #Can now incrementally translate the documentation. See also FAQ.
@changelog_1226_li @changelog_1228_li
#Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense. #Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense.
@changelog_1227_li @changelog_1229_li
#The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables. #The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables.
@changelog_1228_li @changelog_1230_li
#Google translate did not work for the H2 homepage. It should be fixed now. #Google translate did not work for the H2 homepage. It should be fixed now.
@changelog_1229_li @changelog_1231_li
#The CONVERT function did not work with views when using UNION. #The CONVERT function did not work with views when using UNION.
@changelog_1230_li @changelog_1232_li
#The build now issues a warning if the source code is switched to the wrong version. #The build now issues a warning if the source code is switched to the wrong version.
@changelog_1231_li @changelog_1233_li
#The default lock mode is now read committed instead of serialized. #The default lock mode is now read committed instead of serialized.
@changelog_1232_li @changelog_1234_li
#PG server: data was truncated when reading large VARCHAR columns and decimal columns. #PG server: data was truncated when reading large VARCHAR columns and decimal columns.
@changelog_1233_li @changelog_1235_li
#PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed. #PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed.
@changelog_1234_li @changelog_1236_li
#Some file operations didn't work for files in the root directory. Fixed. #Some file operations didn't work for files in the root directory. Fixed.
@changelog_1235_li @changelog_1237_li
#In the Restore tool, the parameter -file did not work. Fixed. #In the Restore tool, the parameter -file did not work. Fixed.
@changelog_1236_li @changelog_1238_li
#Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported. #Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported.
@changelog_1237_li @changelog_1239_li
#The column name C_CURRENT_TIMESTAMP did not work in the last release. #The column name C_CURRENT_TIMESTAMP did not work in the last release.
@changelog_1238_li @changelog_1240_li
#OpenOffice compatibility: support database name in column names. #OpenOffice compatibility: support database name in column names.
@changelog_1239_h2 @changelog_1241_h2
#Version 1.0.56 (2007-08-02) #Version 1.0.56 (2007-08-02)
@changelog_1240_li @changelog_1242_li
#A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete). #A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete).
@changelog_1241_li @changelog_1243_li
#The error messages (src/main/org/h2/res/_*.*) can now be translated. #The error messages (src/main/org/h2/res/_*.*) can now be translated.
@changelog_1242_li @changelog_1244_li
#Part of the documentation has been translated to Japanese by Yusuke Fukushima. #Part of the documentation has been translated to Japanese by Yusuke Fukushima.
@changelog_1243_li @changelog_1245_li
#Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem. #Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem.
@changelog_1244_li @changelog_1246_li
#The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024. #The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024.
@changelog_1245_li @changelog_1247_li
#A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details. #A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details.
@changelog_1246_li @changelog_1248_li
#The experimental H2 ODBC driver has been removed. #The experimental H2 ODBC driver has been removed.
@changelog_1247_li @changelog_1249_li
#The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000. #The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000.
@changelog_1248_li @changelog_1250_li
#Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used. #Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used.
@changelog_1249_li @changelog_1251_li
#The old view implementation has been removed. #The old view implementation has been removed.
@changelog_1250_li @changelog_1252_li
#The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used. #The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used.
@changelog_1251_li @changelog_1253_li
#H2 Console: In the last release, the shutdown button did not work. Fixed. #H2 Console: In the last release, the shutdown button did not work. Fixed.
@changelog_1252_li @changelog_1254_li
#Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE. #Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE.
@changelog_1253_li @changelog_1255_li
#The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed. #The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed.
@changelog_1254_li @changelog_1256_li
#Calculation of cache memory usage has been improved. #Calculation of cache memory usage has been improved.
@changelog_1255_li @changelog_1257_li
#In some situations record were released too late from the cache. Fixed. #In some situations record were released too late from the cache. Fixed.
@changelog_1256_li @changelog_1258_li
#The cache size is now measured in KB instead of blocks of 128 byte. #The cache size is now measured in KB instead of blocks of 128 byte.
@changelog_1257_li @changelog_1259_li
#CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables. #CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables.
@changelog_1258_li @changelog_1260_li
#The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update. #The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update.
@changelog_1259_li @changelog_1261_li
#The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row. #The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row.
@changelog_1260_li @changelog_1262_li
#Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot. #Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot.
@changelog_1261_li @changelog_1263_li
#Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals. #Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals.
@changelog_1262_li @changelog_1264_li
#Documentation: the source code in 'Compacting a Database' was incorrect. Fixed. #Documentation: the source code in 'Compacting a Database' was incorrect. Fixed.
@changelog_1263_li @changelog_1265_li
#In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT. #In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT.
@changelog_1264_li @changelog_1266_li
#Views using UNION did not work correctly. Fixed. #Views using UNION did not work correctly. Fixed.
@changelog_1265_li @changelog_1267_li
#Function tables did not work with views and EXPLAIN. Fixed. #Function tables did not work with views and EXPLAIN. Fixed.
@download_1000_h1 @download_1000_h1
...@@ -7425,7 +7431,7 @@ Java Web Start / JNLP (Java Network Launch Protocol) を使用している時、 ...@@ -7425,7 +7431,7 @@ Java Web Start / JNLP (Java Network Launch Protocol) を使用している時、
#Using a Connection Pool #Using a Connection Pool
@tutorial_1179_p @tutorial_1179_p
#For many databases, opening a connection is slow, and it is a good idea to use a connection pool to re-use connections. For H2 however opening a connection usually is fast if the database is already open. Using a connection pool manager for H2 actually slows down the process a bit, except if file encryption is used (in this case opening a connection is about half as fast are using a connection pool). A simple connection pool is: <a href="http://www.source-code.biz/snippets/java/8.htm">Mini Connection Pool Manager</a> . There are other, more complex connection pools available, for example <a href="http://jakarta.apache.org/commons/dbcp/">DBCP</a> . #For many databases, opening a connection is slow, and it is a good idea to use a connection pool to re-use connections. For H2 however opening a connection usually is fast if the database is already open. Using a connection pool manager for H2 actually slows down the process a bit, except if file encryption is used (in this case opening a connection is about half as fast as using a connection pool). A simple connection pool manager is included in H2. It is based on the <a href="http://www.source-code.biz/snippets/java/8.htm">Mini Connection Pool Manager</a> from Christian d'Heureuse. There are other, more complex connection pools available, for example <a href="http://jakarta.apache.org/commons/dbcp/">DBCP</a> . The build-in connection pool manager is used as follows:
@tutorial_1180_h2 @tutorial_1180_h2
フルテキストサーチ フルテキストサーチ
...@@ -7927,6 +7933,81 @@ Wikipedia: Block cipher modes of operation ...@@ -7927,6 +7933,81 @@ Wikipedia: Block cipher modes of operation
@~advanced_1280_td @~advanced_1280_td
Secure Sockets Layer / Transport Layer Security。こちらもご覧下さい: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a> Secure Sockets Layer / Transport Layer Security。こちらもご覧下さい: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a>
@~changelog_1003_li
#A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked.
@~changelog_1025_h2
#Version 1.0.67 (2008-02-22)
@~changelog_1027_li
#CREATE TABLE AS SELECT now supports specifying the column list and data types.
@~changelog_1048_h2
#Version 1.0.66 (2008-02-02)
@~changelog_1050_li
#H2 Console: stack traces are now links to the source code in the source repository (H2 database only).
@~changelog_1065_h2
#Version 1.0.65 (2008-01-18)
@~changelog_1067_li
#A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER=1 to the database URL in cases where it should not have been required.
@~changelog_1088_h2
#Version 1.0.64 (2007-12-27)
@~changelog_1090_li
#The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed.
@~changelog_1114_h2
#Version 1.0.63 (2007-12-02)
@~changelog_1116_li
#In timezones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed.
@~changelog_1125_h2
#Version 1.0.62 (2007-11-25)
@~changelog_1127_li
#MVCC: now an exception is thrown when an application tries to change the MVCC setting while the database is already open.
@~changelog_1144_h2
#Version 1.0.61 (2007-11-10)
@~changelog_1146_li
#Added more tests. The code coverage is now at 83%.
@~changelog_1159_h2
#Version 1.0.60 (2007-10-20)
@~changelog_1161_li
#User defined aggregate functions are not supported.
@~changelog_1171_h2
#Version 1.0.59 (2007-10-03)
@~changelog_1173_li
#If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed.
@~changelog_1187_h2
#Version 1.0.58 (2007-09-15)
@~changelog_1189_li
#Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false.
@~changelog_1212_h2
#Version 1.0.57 (2007-08-25)
@~changelog_1214_li
#The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change.
@~changelog_1239_h2
#Version 1.0.56 (2007-08-02)
@~changelog_1241_li
#The error messages (src/main/org/h2/res/_*.*) can now be translated.
@~roadmap_1362_h2 @~roadmap_1362_h2
#Not Planned #Not Planned
......
h2/src/docsrc/textbase/_docs_en.properties
浏览文件 @ 36e4a4ce
...@@ -168,7 +168,7 @@ advanced_1166_li=Copy the h2.jar file to ikvm/bin ...@@ -168,7 +168,7 @@ advanced_1166_li=Copy the h2.jar file to ikvm/bin
advanced_1167_li=Run the H2 Console using\: <code>ikvm -jar h2.jar</code> advanced_1167_li=Run the H2 Console using\: <code>ikvm -jar h2.jar</code>
advanced_1168_li=Convert the H2 Console to an .exe file using\: <code>ikvmc -target\:winexe h2.jar</code> . You may ignore the warnings. advanced_1168_li=Convert the H2 Console to an .exe file using\: <code>ikvmc -target\:winexe h2.jar</code> . You may ignore the warnings.
advanced_1169_li=Create a .dll file using (change the version accordingly)\: <code>ikvmc.exe -target\:library -version\:1.0.68.0 h2.jar</code> advanced_1169_li=Create a .dll file using (change the version accordingly)\: <code>ikvmc.exe -target\:library -version\:1.0.68.0 h2.jar</code>
advanced_1170_p=If you want your C\# application use H2, you need to add the h2.dll and the IKVM.OpenJDK.ClassLibrary.dll to your C\# solution. See also the short <a href\="http\://groups.google.com/group/h2-database/browse_thread/thread/400bc5a9bc9de3fd">C\# source code example</a> . advanced_1170_p=If you want your C\# application use H2, you need to add the h2.dll and the IKVM.OpenJDK.ClassLibrary.dll to your C\# solution. Here some sample code\:
advanced_1171_h2=ACID advanced_1171_h2=ACID
advanced_1172_p=In the database world, ACID stands for\: advanced_1172_p=In the database world, ACID stands for\:
advanced_1173_li=Atomicity\: Transactions must be atomic, meaning either all tasks are performed or none. advanced_1173_li=Atomicity\: Transactions must be atomic, meaning either all tasks are performed or none.
...@@ -328,270 +328,272 @@ build_1033_li=Web site\: src/docsrc/text/_docs_*.utf8.txt ...@@ -328,270 +328,272 @@ build_1033_li=Web site\: src/docsrc/text/_docs_*.utf8.txt
build_1034_p=The conversion between UTF-8 and Java encoding (using the \\u syntax), as well as the HTML entities (&\#..;) is automated by running the tool PropertiesToUTF8. The web site translation is automated as well, using <code>ant docs</code> . build_1034_p=The conversion between UTF-8 and Java encoding (using the \\u syntax), as well as the HTML entities (&\#..;) is automated by running the tool PropertiesToUTF8. The web site translation is automated as well, using <code>ant docs</code> .
changelog_1000_h1=Change Log changelog_1000_h1=Change Log
changelog_1001_h2=Next Version (unreleased) changelog_1001_h2=Next Version (unreleased)
changelog_1002_li=Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000. changelog_1002_li=.
changelog_1003_li=A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked. changelog_1003_h2=Version 1.0.68 (2008-03-18)
changelog_1004_li=Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory. changelog_1004_li=Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000.
changelog_1005_li=ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction. changelog_1005_li=A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked.
changelog_1006_li=New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled. changelog_1006_li=Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory.
changelog_1007_li=When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed. changelog_1007_li=ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction.
changelog_1008_li=Improved performance when using lob files in directories (however this is still disabled by default) changelog_1008_li=New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled.
changelog_1009_li=H2 Console\: autocomplete didn't work with very large scripts. Fixed. changelog_1009_li=When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed.
changelog_1010_li=Fulltext search\: new method SEARCH_DATA that returns the column names and primary keys as arrays. changelog_1010_li=Improved performance when using lob files in directories (however this is still disabled by default)
changelog_1011_li=New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true. changelog_1011_li=H2 Console\: autocomplete didn't work with very large scripts. Fixed.
changelog_1012_li=When using multi-version concurrency (MVCC\=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session. changelog_1012_li=Fulltext search\: new method SEARCH_DATA that returns the column names and primary keys as arrays.
changelog_1013_li=H2 Console\: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr. changelog_1013_li=New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true.
changelog_1014_li=H2 Console\: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu. changelog_1014_li=When using multi-version concurrency (MVCC\=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session.
changelog_1015_li=H2 Console\: the start window works better with IKVM changelog_1015_li=H2 Console\: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr.
changelog_1016_li=H2 Console\: improved compatibility with Safari (Safari requires keep-alive) changelog_1016_li=H2 Console\: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu.
changelog_1017_li=Random\: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem. changelog_1017_li=H2 Console\: the start window works better with IKVM
changelog_1018_li=SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException. changelog_1018_li=H2 Console\: improved compatibility with Safari (Safari requires keep-alive)
changelog_1019_li=When using a view, the column precision was changed to the default scale for some data types. changelog_1019_li=Random\: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem.
changelog_1020_li=CSVWRITE now supports a 'null string' that is used for parsing and writing NULL. changelog_1020_li=SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException.
changelog_1021_li=Some long running queries could not be cancelled. changelog_1021_li=When using a view, the column precision was changed to the default scale for some data types.
changelog_1022_li=Queries with many outer join tables were very slow. Fixed. changelog_1022_li=CSVWRITE now supports a 'null string' that is used for parsing and writing NULL.
changelog_1023_li=The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache. changelog_1023_li=Some long running queries could not be cancelled.
changelog_1024_li=UPDATE SET column\=DEFAULT is now supported. changelog_1024_li=Queries with many outer join tables were very slow. Fixed.
changelog_1025_h2=Version 1.0.67 (2008-02-22) changelog_1025_li=The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache.
changelog_1026_li=New function FILE_READ to read a file or from an URL. Both binary and text data is supported. changelog_1026_li=UPDATE SET column\=DEFAULT is now supported.
changelog_1027_li=CREATE TABLE AS SELECT now supports specifying the column list and data types. changelog_1027_h2=Version 1.0.67 (2008-02-22)
changelog_1028_li=Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock. changelog_1028_li=New function FILE_READ to read a file or from an URL. Both binary and text data is supported.
changelog_1029_li=A user now has all rights on his own local temporary tables. changelog_1029_li=CREATE TABLE AS SELECT now supports specifying the column list and data types.
changelog_1030_li=The CSV tool now supports a custom lineSeparator. changelog_1030_li=Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock.
changelog_1031_li=When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering. changelog_1031_li=A user now has all rights on his own local temporary tables.
changelog_1032_li=The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen\! changelog_1032_li=The CSV tool now supports a custom lineSeparator.
changelog_1033_li=Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger. changelog_1033_li=When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering.
changelog_1034_li=Opening databases with ACCESS_MODE_DATA\=r is now supported. In this case the database is read-only, but the files don't not need to be read-only. changelog_1034_li=The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen\!
changelog_1035_li=Security\: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks. changelog_1035_li=Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger.
changelog_1036_li=The value cache is now a soft reference cache. This should help save memory. changelog_1036_li=Opening databases with ACCESS_MODE_DATA\=r is now supported. In this case the database is read-only, but the files don't not need to be read-only.
changelog_1037_li=CREATE INDEX on a table with many rows could run out of memory. Fixed. changelog_1037_li=Security\: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks.
changelog_1038_li=Large result sets are now a bit faster. changelog_1038_li=The value cache is now a soft reference cache. This should help save memory.
changelog_1039_li=ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions). changelog_1039_li=CREATE INDEX on a table with many rows could run out of memory. Fixed.
changelog_1040_li=When setting the base directory on the command line, the user directory prefix ('~') was ignored. changelog_1040_li=Large result sets are now a bit faster.
changelog_1041_li=The DbStarter servlet didn't start the TCP listener even if configured. changelog_1041_li=ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions).
changelog_1042_li=Statement.setQueryTimeout() is now supported. changelog_1042_li=When setting the base directory on the command line, the user directory prefix ('~') was ignored.
changelog_1043_li=New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout. changelog_1043_li=The DbStarter servlet didn't start the TCP listener even if configured.
changelog_1044_li=Changing the transaction log level (SET LOG) is now written to the trace file by default. changelog_1044_li=Statement.setQueryTimeout() is now supported.
changelog_1045_li=In a SQL script, primary key constraints are now ordered before foreign key constraints. changelog_1045_li=New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout.
changelog_1046_li=It was not possible to create a referential constraint to a table in a different schema in some situations. changelog_1046_li=Changing the transaction log level (SET LOG) is now written to the trace file by default.
changelog_1047_li=The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case. changelog_1047_li=In a SQL script, primary key constraints are now ordered before foreign key constraints.
changelog_1048_h2=Version 1.0.66 (2008-02-02) changelog_1048_li=It was not possible to create a referential constraint to a table in a different schema in some situations.
changelog_1049_li=There is a new online error analyzer tool. changelog_1049_li=The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case.
changelog_1050_li=H2 Console\: stack traces are now links to the source code in the source repository (H2 database only). changelog_1050_h2=Version 1.0.66 (2008-02-02)
changelog_1051_li=CHAR data type equals comparison was case insensitive instead of case sensitive. changelog_1051_li=There is a new online error analyzer tool.
changelog_1052_li=The exception 'Value too long for column' now includes the data. changelog_1052_li=H2 Console\: stack traces are now links to the source code in the source repository (H2 database only).
changelog_1053_li=The table name was missing in the documentation of CREATE INDEX. changelog_1053_li=CHAR data type equals comparison was case insensitive instead of case sensitive.
changelog_1054_li=Better support for IKVM (www.ikvm.net)\: the H2 Console now opens a browser window. changelog_1054_li=The exception 'Value too long for column' now includes the data.
changelog_1055_li=The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions. changelog_1055_li=The table name was missing in the documentation of CREATE INDEX.
changelog_1056_li=The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed. changelog_1056_li=Better support for IKVM (www.ikvm.net)\: the H2 Console now opens a browser window.
changelog_1057_li=The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far). changelog_1057_li=The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions.
changelog_1058_li=The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice. changelog_1058_li=The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed.
changelog_1059_li=Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading. changelog_1059_li=The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far).
changelog_1060_li=For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string). changelog_1060_li=The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice.
changelog_1061_li=Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster. changelog_1061_li=Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading.
changelog_1062_li=Variables\: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables. changelog_1062_li=For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string).
changelog_1063_li=Fulltext search is now supported in named in-memory databases. changelog_1063_li=Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster.
changelog_1064_li=H2 Console\: multiple consecutive spaces in the setting name did not work. Fixed. changelog_1064_li=Variables\: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables.
changelog_1065_h2=Version 1.0.65 (2008-01-18) changelog_1065_li=Fulltext search is now supported in named in-memory databases.
changelog_1066_li=The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6). changelog_1066_li=H2 Console\: multiple consecutive spaces in the setting name did not work. Fixed.
changelog_1067_li=A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER\=1 to the database URL in cases where it should not have been required. changelog_1067_h2=Version 1.0.65 (2008-01-18)
changelog_1068_li=The performance for DROP and DROP ALL OBJECTS has been improved. changelog_1068_li=The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6).
changelog_1069_li=The ChangePassword API has been improved. changelog_1069_li=A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER\=1 to the database URL in cases where it should not have been required.
changelog_1070_li=User defined variables are now supported. Examples\: SET @VAR\=10;CALL @VAR. This can be used for running totals as in\: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10) changelog_1070_li=The performance for DROP and DROP ALL OBJECTS has been improved.
changelog_1071_li=The Ukrainian translation has been improved. changelog_1071_li=The ChangePassword API has been improved.
changelog_1072_li=CALL statements can now be used in batch updates and called using Statement.executeUpdate. changelog_1072_li=User defined variables are now supported. Examples\: SET @VAR\=10;CALL @VAR. This can be used for running totals as in\: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10)
changelog_1073_li=New read-only setting CREATE_BUILD (the build number of the database engine that created the database). changelog_1073_li=The Ukrainian translation has been improved.
changelog_1074_li=The optimizer did not use multi column indexes for range queries in some cases. Fixed. changelog_1074_li=CALL statements can now be used in batch updates and called using Statement.executeUpdate.
changelog_1075_li=The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified. changelog_1075_li=New read-only setting CREATE_BUILD (the build number of the database engine that created the database).
changelog_1076_li=The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress. changelog_1076_li=The optimizer did not use multi column indexes for range queries in some cases. Fixed.
changelog_1077_li=Batch update\: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed. changelog_1077_li=The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified.
changelog_1078_li=Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed. changelog_1078_li=The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress.
changelog_1079_li=The performance for large result sets in the server mode has been improved. changelog_1079_li=Batch update\: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed.
changelog_1080_li=The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize. changelog_1080_li=Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed.
changelog_1081_li=The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used. changelog_1081_li=The performance for large result sets in the server mode has been improved.
changelog_1082_li=The SCRIPT command did not split up CLOB data correctly. Fixed. changelog_1082_li=The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize.
changelog_1083_li=Optimization for single column distinct queries with an index\: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false. changelog_1083_li=The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used.
changelog_1084_li=DROP ALL OBJECTS did not drop user defined aggregate functions and domains. changelog_1084_li=The SCRIPT command did not split up CLOB data correctly. Fixed.
changelog_1085_li=PostgreSQL compatibility\: COUNT(T.*) is now supported. changelog_1085_li=Optimization for single column distinct queries with an index\: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false.
changelog_1086_li=LIKE comparisons are now faster. changelog_1086_li=DROP ALL OBJECTS did not drop user defined aggregate functions and domains.
changelog_1087_li=Encrypted databases are now faster. changelog_1087_li=PostgreSQL compatibility\: COUNT(T.*) is now supported.
changelog_1088_h2=Version 1.0.64 (2007-12-27) changelog_1088_li=LIKE comparisons are now faster.
changelog_1089_li=3-way union queries with prepared statement or views could return the wrong results. Fixed. changelog_1089_li=Encrypted databases are now faster.
changelog_1090_li=The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed. changelog_1090_h2=Version 1.0.64 (2007-12-27)
changelog_1091_li=CSV tool\: some escape/separator character combinations did not work. Fixed. changelog_1091_li=3-way union queries with prepared statement or views could return the wrong results. Fixed.
changelog_1092_li=CSV tool\: the character \# could not be used as a separator when reading. changelog_1092_li=The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed.
changelog_1093_li=Recovery\: when the index file is corrupt, now the database deletes it and re-creates it automatically. changelog_1093_li=CSV tool\: some escape/separator character combinations did not work. Fixed.
changelog_1094_li=The MVCC mode did not work well with in-memory databases. Fixed. changelog_1094_li=CSV tool\: the character \# could not be used as a separator when reading.
changelog_1095_li=The FTP server now supports a event listener. Thanks Fulvio Biondi for the help\! changelog_1095_li=Recovery\: when the index file is corrupt, now the database deletes it and re-creates it automatically.
changelog_1096_li=New system function CANCEL_SESSION to cancel the currently executing statement of another session. changelog_1096_li=The MVCC mode did not work well with in-memory databases. Fixed.
changelog_1097_li=The database now supports an exclusive mode. In exclusive mode, new connections are rejected. changelog_1097_li=The FTP server now supports a event listener. Thanks Fulvio Biondi for the help\!
changelog_1098_li=H2 Console\: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '\=null'. changelog_1098_li=New system function CANCEL_SESSION to cancel the currently executing statement of another session.
changelog_1099_li=New built-in functions RPAD and LPAD. changelog_1099_li=The database now supports an exclusive mode. In exclusive mode, new connections are rejected.
changelog_1100_li=New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session. changelog_1100_li=H2 Console\: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '\=null'.
changelog_1101_li=The Ukrainian translation was not working in the last release. Fixed. changelog_1101_li=New built-in functions RPAD and LPAD.
changelog_1102_li=Creating many tables (many hundreds) was slow. Fixed. changelog_1102_li=New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session.
changelog_1103_li=Opening a database with many indexes (thousands) was slow. Fixed. changelog_1103_li=The Ukrainian translation was not working in the last release. Fixed.
changelog_1104_li=H2 Console / autocomplete\: Ctrl+Space now shows the list in all modes. changelog_1104_li=Creating many tables (many hundreds) was slow. Fixed.
changelog_1105_li=The method Trigger.init has been changed\: the parameters 'before' and 'type', have been added to the init method. changelog_1105_li=Opening a database with many indexes (thousands) was slow. Fixed.
changelog_1106_li=The performance has been improved for ResultSet methods with column name. changelog_1106_li=H2 Console / autocomplete\: Ctrl+Space now shows the list in all modes.
changelog_1107_li=A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed. changelog_1107_li=The method Trigger.init has been changed\: the parameters 'before' and 'type', have been added to the init method.
changelog_1108_li=The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar\! changelog_1108_li=The performance has been improved for ResultSet methods with column name.
changelog_1109_li=Improved debugging support\: toString methods of most object now return a meaningful text. changelog_1109_li=A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed.
changelog_1110_li=The classes DbStarter and WebServlet have been moved to src/main. changelog_1110_li=The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar\!
changelog_1111_li=The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement. changelog_1111_li=Improved debugging support\: toString methods of most object now return a meaningful text.
changelog_1112_li=Loading classes and calling methods can be restricted using the new system property h2.allowedClasses. changelog_1112_li=The classes DbStarter and WebServlet have been moved to src/main.
changelog_1113_li=The database could not be used in Java applets due to security exceptions. Fixed. changelog_1113_li=The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement.
changelog_1114_h2=Version 1.0.63 (2007-12-02) changelog_1114_li=Loading classes and calling methods can be restricted using the new system property h2.allowedClasses.
changelog_1115_li=The SecurePassword example has been improved. changelog_1115_li=The database could not be used in Java applets due to security exceptions. Fixed.
changelog_1116_li=In timezones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed. changelog_1116_h2=Version 1.0.63 (2007-12-02)
changelog_1117_li=The native fulltext search was not working properly after re-connecting. changelog_1117_li=The SecurePassword example has been improved.
changelog_1118_li=Improved FTP server\: now the PORT command is supported. changelog_1118_li=In timezones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed.
changelog_1119_li=Temporary views (FROM(...)) with UNION didn't work if nested. Fixed. changelog_1119_li=The native fulltext search was not working properly after re-connecting.
changelog_1120_li=Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin\=true changelog_1120_li=Improved FTP server\: now the PORT command is supported.
changelog_1121_li=The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot\! changelog_1121_li=Temporary views (FROM(...)) with UNION didn't work if nested. Fixed.
changelog_1122_li=New function TABLE_DISTINCT. changelog_1122_li=Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin\=true
changelog_1123_li=Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly. changelog_1123_li=The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot\!
changelog_1124_li=Certain setting in the Server didn't work (http\://code.google.com/p/h2database/issues/detail?id\=7). changelog_1124_li=New function TABLE_DISTINCT.
changelog_1125_h2=Version 1.0.62 (2007-11-25) changelog_1125_li=Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly.
changelog_1126_li=Large updates and deletes are now supported by buffering data to disk if required. The threshold is currently set to 100'000 bytes and can be changed using SET MAX_OPERATION_MEMORY or using by appending ;MAX_OPERATION_MEMORY\=.. to the database URL. See also the docs. changelog_1126_li=Certain setting in the Server didn't work (http\://code.google.com/p/h2database/issues/detail?id\=7).
changelog_1127_li=MVCC\: now an exception is thrown when an application tries to change the MVCC setting while the database is already open. changelog_1127_h2=Version 1.0.62 (2007-11-25)
changelog_1128_li=Referential integrity checks didn't lock the referenced table, and thus could read uncommitted rows of other connections. In that way the referential constraints could get violated (except when using MVCC). changelog_1128_li=Large updates and deletes are now supported by buffering data to disk if required. The threshold is currently set to 100'000 bytes and can be changed using SET MAX_OPERATION_MEMORY or using by appending ;MAX_OPERATION_MEMORY\=.. to the database URL. See also the docs.
changelog_1129_li=Renaming or dropping a user with a schema, or removing the admin property of that user made the schema inaccessible after re-opening the database. Fixed. changelog_1129_li=MVCC\: now an exception is thrown when an application tries to change the MVCC setting while the database is already open.
changelog_1130_li=The H2 Console now also support the command line option -ifExists when started from the Server tool, but only when connecting to H2 databases. changelog_1130_li=Referential integrity checks didn't lock the referenced table, and thus could read uncommitted rows of other connections. In that way the referential constraints could get violated (except when using MVCC).
changelog_1131_li=Duplicate column names were not detected when renaming columns. Fixed. changelog_1131_li=Renaming or dropping a user with a schema, or removing the admin property of that user made the schema inaccessible after re-opening the database. Fixed.
changelog_1132_li=The console did not display multiple embedded spaces in text correctly. Fixed. changelog_1132_li=The H2 Console now also support the command line option -ifExists when started from the Server tool, but only when connecting to H2 databases.
changelog_1133_li=Google Android support\: use 'ant codeswitchAndroid' to switch the source code to Android. changelog_1133_li=Duplicate column names were not detected when renaming columns. Fixed.
changelog_1134_li=Values of type ARRAY are now sorted as in PostgreSQL. changelog_1134_li=The console did not display multiple embedded spaces in text correctly. Fixed.
changelog_1135_li=In the cluster mode, could not connect if only one server was running (last release only). Fixed. changelog_1135_li=Google Android support\: use 'ant codeswitchAndroid' to switch the source code to Android.
changelog_1136_li=The performance of large CSV operations has been improved. changelog_1136_li=Values of type ARRAY are now sorted as in PostgreSQL.
changelog_1137_li=Now using custom toString() for most JDBC objects and commands. changelog_1137_li=In the cluster mode, could not connect if only one server was running (last release only). Fixed.
changelog_1138_li=Nested temporary views (SELECT * FROM (SELECT ...)) with parameters didn't work in some cases. Fixed. changelog_1138_li=The performance of large CSV operations has been improved.
changelog_1139_li=CSV\: Using an empty field delimiter didn't work (a workaround was using char(0)). Fixed. changelog_1139_li=Now using custom toString() for most JDBC objects and commands.
changelog_1140_li=A patch for Apache DDL Utils is available at https\://issues.apache.org/jira/browse/DDLUTILS-185 changelog_1140_li=Nested temporary views (SELECT * FROM (SELECT ...)) with parameters didn't work in some cases. Fixed.
changelog_1141_li=The default value for h2.emergencySpaceInitial is now 256 KB (to speed up creating encrypted databases) changelog_1141_li=CSV\: Using an empty field delimiter didn't work (a workaround was using char(0)). Fixed.
changelog_1142_li=Eduardo Velasques has translated the H2 Console and the error messages to Brazilian Portuguese. Thanks a lot\! changelog_1142_li=A patch for Apache DDL Utils is available at https\://issues.apache.org/jira/browse/DDLUTILS-185
changelog_1143_li=Creating a table from GROUP_CONCAT didn't work if the data was longer than 255 characters changelog_1143_li=The default value for h2.emergencySpaceInitial is now 256 KB (to speed up creating encrypted databases)
changelog_1144_h2=Version 1.0.61 (2007-11-10) changelog_1144_li=Eduardo Velasques has translated the H2 Console and the error messages to Brazilian Portuguese. Thanks a lot\!
changelog_1145_li=The Lucene Fulltext implementation is now compiled and included in the h2.jar. Requires Lucene 2.2. changelog_1145_li=Creating a table from GROUP_CONCAT didn't work if the data was longer than 255 characters
changelog_1146_li=Added more tests. The code coverage is now at 83%. changelog_1146_h2=Version 1.0.61 (2007-11-10)
changelog_1147_li=ResultSetMetaData.getColumnDisplaySize was calculated as the longest display size for the given result set, but should be the maximum size that fits in the column. Fixed. changelog_1147_li=The Lucene Fulltext implementation is now compiled and included in the h2.jar. Requires Lucene 2.2.
changelog_1148_li=The MODE used to be a global setting, now it is a database level setting. changelog_1148_li=Added more tests. The code coverage is now at 83%.
changelog_1149_li=The database does now always round to the nearest number when converting a floating point to a integer\: CAST(1.5 AS INT) will now result in 2, like in PostgreSQL and MySQL. changelog_1149_li=ResultSetMetaData.getColumnDisplaySize was calculated as the longest display size for the given result set, but should be the maximum size that fits in the column. Fixed.
changelog_1150_li=Math operations using unknown data types (for example -? and ?+?) are now interpreted as decimal. changelog_1150_li=The MODE used to be a global setting, now it is a database level setting.
changelog_1151_li=INSTR, LOCATE\: backward searching is not supported by using a negative start position. changelog_1151_li=The database does now always round to the nearest number when converting a floating point to a integer\: CAST(1.5 AS INT) will now result in 2, like in PostgreSQL and MySQL.
changelog_1152_li=Can now open a database stored in a jar or zip file (for example, jdbc\:h2\:zip\:c\:/temp/h2.zip\!/test). changelog_1152_li=Math operations using unknown data types (for example -? and ?+?) are now interpreted as decimal.
changelog_1153_li=Files access now uses an API (FileSystem, FileObject), this will simplify adding other file systems and features (for example replication). changelog_1153_li=INSTR, LOCATE\: backward searching is not supported by using a negative start position.
changelog_1154_li=Vlad Alexahin has translated H2 Console to Russian. Thanks a lot\! changelog_1154_li=Can now open a database stored in a jar or zip file (for example, jdbc\:h2\:zip\:c\:/temp/h2.zip\!/test).
changelog_1155_li=Descending indexes are now supported. This is useful when sorting columns descending, for example by creation date. changelog_1155_li=Files access now uses an API (FileSystem, FileObject), this will simplify adding other file systems and features (for example replication).
changelog_1156_li=Solved a Java level deadlock in the DatabaseCloser. changelog_1156_li=Vlad Alexahin has translated H2 Console to Russian. Thanks a lot\!
changelog_1157_li=CREATE SEQUENCE\: New option CACHE (number of pre-allocated numbers). New column CACHE in the sequence meta data table. The default cache size is still 32. changelog_1157_li=Descending indexes are now supported. This is useful when sorting columns descending, for example by creation date.
changelog_1158_li=MVCC\: The system property h2.mvcc has been removed. A few bugs have been fixed, and new tests have been added. changelog_1158_li=Solved a Java level deadlock in the DatabaseCloser.
changelog_1159_h2=Version 1.0.60 (2007-10-20) changelog_1159_li=CREATE SEQUENCE\: New option CACHE (number of pre-allocated numbers). New column CACHE in the sequence meta data table. The default cache size is still 32.
changelog_1160_li=JdbcXAConnection\: starting a transaction before getting the connection didn't switch off autocommit. changelog_1160_li=MVCC\: The system property h2.mvcc has been removed. A few bugs have been fixed, and new tests have been added.
changelog_1161_li=User defined aggregate functions are not supported. changelog_1161_h2=Version 1.0.60 (2007-10-20)
changelog_1162_li=Server.shutdownTcpServer was blocked when first called with force\=false and then force\=true. Now documentation is improved, and it is no longer blocked. changelog_1162_li=JdbcXAConnection\: starting a transaction before getting the connection didn't switch off autocommit.
changelog_1163_li=Stack traces did not include the SQL statement in all cases where they could have. Also, stack traces with SQL statement are now shorter. changelog_1163_li=User defined aggregate functions are not supported.
changelog_1164_li=Linked tables\: now tables in non-default schemas are supported as well changelog_1164_li=Server.shutdownTcpServer was blocked when first called with force\=false and then force\=true. Now documentation is improved, and it is no longer blocked.
changelog_1165_li=New Italian translation from PierPaolo Ucchino. Thanks a lot\! changelog_1165_li=Stack traces did not include the SQL statement in all cases where they could have. Also, stack traces with SQL statement are now shorter.
changelog_1166_li=CSV\: New methods to set the escape character and field delimiter in the Csv tool and the CSVWRITE and CSVREAD methods. changelog_1166_li=Linked tables\: now tables in non-default schemas are supported as well
changelog_1167_li=Prepared statements could not be used after data definition statements (creating tables and so on). Fixed. changelog_1167_li=New Italian translation from PierPaolo Ucchino. Thanks a lot\!
changelog_1168_li=PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed. changelog_1168_li=CSV\: New methods to set the escape character and field delimiter in the Csv tool and the CSVWRITE and CSVREAD methods.
changelog_1169_li=The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed. changelog_1169_li=Prepared statements could not be used after data definition statements (creating tables and so on). Fixed.
changelog_1170_li=CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example\: select * from csvread('jar\:file\:///c\:/temp/test.jar\!/test.csv'); changelog_1170_li=PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed.
changelog_1171_h2=Version 1.0.59 (2007-10-03) changelog_1171_li=The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed.
changelog_1172_li=When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed. changelog_1172_li=CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example\: select * from csvread('jar\:file\:///c\:/temp/test.jar\!/test.csv');
changelog_1173_li=If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed. changelog_1173_h2=Version 1.0.59 (2007-10-03)
changelog_1174_li=Multi-threaded kernel (MULTI_THREADED\=1)\: A synchronization problem has been fixed. changelog_1174_li=When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed.
changelog_1175_li=A PreparedStatement that was cancelled could not be reused. Fixed. changelog_1175_li=If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed.
changelog_1176_li=H2 Console\: Progress information when logging into a H2 embedded database (useful when opening a database is slow). changelog_1176_li=Multi-threaded kernel (MULTI_THREADED\=1)\: A synchronization problem has been fixed.
changelog_1177_li=When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed. changelog_1177_li=A PreparedStatement that was cancelled could not be reused. Fixed.
changelog_1178_li=Fulltext search is now documented (in the Tutorial). changelog_1178_li=H2 Console\: Progress information when logging into a H2 embedded database (useful when opening a database is slow).
changelog_1179_li=The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed. changelog_1179_li=When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed.
changelog_1180_li=When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed. changelog_1180_li=Fulltext search is now documented (in the Tutorial).
changelog_1181_li=When using the (undocumented) in-memory file system (jdbc\:h2\:memFS\:x or jdbc\:h2\:memLZF\:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed. changelog_1181_li=The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed.
changelog_1182_li=REGEXP compatibility\: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used. changelog_1182_li=When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed.
changelog_1183_li=SCRIPT\: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste. changelog_1183_li=When using the (undocumented) in-memory file system (jdbc\:h2\:memFS\:x or jdbc\:h2\:memLZF\:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed.
changelog_1184_li=When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example\: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed. changelog_1184_li=REGEXP compatibility\: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used.
changelog_1185_li=Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed. changelog_1185_li=SCRIPT\: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste.
changelog_1186_li=Compatibility\: comparing columns with constants that are out of range does not throw an exception. changelog_1186_li=When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example\: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed.
changelog_1187_h2=Version 1.0.58 (2007-09-15) changelog_1187_li=Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed.
changelog_1188_li=System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi. changelog_1188_li=Compatibility\: comparing columns with constants that are out of range does not throw an exception.
changelog_1189_li=Optimization for independent subqueries. For example, this query can now an index\: SELECT * FROM TEST WHERE ID \= (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false. changelog_1189_h2=Version 1.0.58 (2007-09-15)
changelog_1190_li=The explain plan now says\: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*). changelog_1190_li=System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi.
changelog_1191_li=When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used. changelog_1191_li=Optimization for independent subqueries. For example, this query can now an index\: SELECT * FROM TEST WHERE ID \= (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false.
changelog_1192_li=When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed. changelog_1192_li=The explain plan now says\: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*).
changelog_1193_li=Maven 2\: new version are now automatically synced with the central repositories. changelog_1193_li=When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used.
changelog_1194_li=The default value for MAX_MEMORY_UNDO is now 100000. changelog_1194_li=When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed.
changelog_1195_li=The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it. changelog_1195_li=Maven 2\: new version are now automatically synced with the central repositories.
changelog_1196_li=Oracle compatibility\: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..). changelog_1196_li=The default value for MAX_MEMORY_UNDO is now 100000.
changelog_1197_li=After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed. changelog_1197_li=The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it.
changelog_1198_li=About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem\: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is <a href\="http\://bugs.sun.com/bugdatabase/view_bug.do?bug_id\=4197876">an additionally problem</a> . A workaround has been implemented. changelog_1198_li=Oracle compatibility\: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..).
changelog_1199_li=Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values. changelog_1199_li=After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed.
changelog_1200_li=Using spaces in column and table aliases was not supported when used inside a view or temporary view. changelog_1200_li=About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem\: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is <a href\="http\://bugs.sun.com/bugdatabase/view_bug.do?bug_id\=4197876">an additionally problem</a> . A workaround has been implemented.
changelog_1201_li=The version (build) number is now included in the manifest file. changelog_1201_li=Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values.
changelog_1202_li=In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second. changelog_1202_li=Using spaces in column and table aliases was not supported when used inside a view or temporary view.
changelog_1203_li=The database file sizes are now increased at most 32 MB at any time. changelog_1203_li=The version (build) number is now included in the manifest file.
changelog_1204_li=New method DatabaseEventListener.opened that is called just after opening a database. changelog_1204_li=In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second.
changelog_1205_li=When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query. changelog_1205_li=The database file sizes are now increased at most 32 MB at any time.
changelog_1206_li=A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception. changelog_1206_li=New method DatabaseEventListener.opened that is called just after opening a database.
changelog_1207_li=User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail. changelog_1207_li=When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query.
changelog_1208_li=Improved MultiDimension tool (for spatial queries)\: in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data). changelog_1208_li=A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception.
changelog_1209_li=Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL. changelog_1209_li=User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail.
changelog_1210_li=For PgServer, character encoding other than UTF-8 did not work correctly. Fixed. changelog_1210_li=Improved MultiDimension tool (for spatial queries)\: in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data).
changelog_1211_li=Using a function in a GROUP BY expression that is used in a view as a condition did not always work. changelog_1211_li=Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL.
changelog_1212_h2=Version 1.0.57 (2007-08-25) changelog_1212_li=For PgServer, character encoding other than UTF-8 did not work correctly. Fixed.
changelog_1213_li=New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc\:h2\:test;MVCC\=TRUE) or as a system property (-Dh2.mvcc\=true). This is work-in-progress, use it at your own risk. Feedback is welcome. changelog_1213_li=Using a function in a GROUP BY expression that is used in a view as a condition did not always work.
changelog_1214_li=The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change. changelog_1214_h2=Version 1.0.57 (2007-08-25)
changelog_1215_li=The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed\: only one database may be backed up at any time. changelog_1215_li=New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc\:h2\:test;MVCC\=TRUE) or as a system property (-Dh2.mvcc\=true). This is work-in-progress, use it at your own risk. Feedback is welcome.
changelog_1216_li=Opening large read-only databases was very slow. Fixed. changelog_1216_li=The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change.
changelog_1217_li=New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot\! changelog_1217_li=The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed\: only one database may be backed up at any time.
changelog_1218_li=Disabling / enabling referential integrity for a table can now be used inside a transaction. changelog_1218_li=Opening large read-only databases was very slow. Fixed.
changelog_1219_li=Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed. changelog_1219_li=New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot\!
changelog_1220_li=Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed. changelog_1220_li=Disabling / enabling referential integrity for a table can now be used inside a transaction.
changelog_1221_li=When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed. changelog_1221_li=Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed.
changelog_1222_li=When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed. changelog_1222_li=Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed.
changelog_1223_li=Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table. changelog_1223_li=When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed.
changelog_1224_li=Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now. changelog_1224_li=When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed.
changelog_1225_li=Can now incrementally translate the documentation. See also FAQ. changelog_1225_li=Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table.
changelog_1226_li=Improved error messages\: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense. changelog_1226_li=Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now.
changelog_1227_li=The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java\:comp/env/jdbc/Test). This should also work for linked tables. changelog_1227_li=Can now incrementally translate the documentation. See also FAQ.
changelog_1228_li=Google translate did not work for the H2 homepage. It should be fixed now. changelog_1228_li=Improved error messages\: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense.
changelog_1229_li=The CONVERT function did not work with views when using UNION. changelog_1229_li=The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java\:comp/env/jdbc/Test). This should also work for linked tables.
changelog_1230_li=The build now issues a warning if the source code is switched to the wrong version. changelog_1230_li=Google translate did not work for the H2 homepage. It should be fixed now.
changelog_1231_li=The default lock mode is now read committed instead of serialized. changelog_1231_li=The CONVERT function did not work with views when using UNION.
changelog_1232_li=PG server\: data was truncated when reading large VARCHAR columns and decimal columns. changelog_1232_li=The build now issues a warning if the source code is switched to the wrong version.
changelog_1233_li=PG server\: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed. changelog_1233_li=The default lock mode is now read committed instead of serialized.
changelog_1234_li=Some file operations didn't work for files in the root directory. Fixed. changelog_1234_li=PG server\: data was truncated when reading large VARCHAR columns and decimal columns.
changelog_1235_li=In the Restore tool, the parameter -file did not work. Fixed. changelog_1235_li=PG server\: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed.
changelog_1236_li=Two-phase commit\: commit with transaction name was only supported in the recovery scan. Now it is always supported. changelog_1236_li=Some file operations didn't work for files in the root directory. Fixed.
changelog_1237_li=The column name C_CURRENT_TIMESTAMP did not work in the last release. changelog_1237_li=In the Restore tool, the parameter -file did not work. Fixed.
changelog_1238_li=OpenOffice compatibility\: support database name in column names. changelog_1238_li=Two-phase commit\: commit with transaction name was only supported in the recovery scan. Now it is always supported.
changelog_1239_h2=Version 1.0.56 (2007-08-02) changelog_1239_li=The column name C_CURRENT_TIMESTAMP did not work in the last release.
changelog_1240_li=A new tool to help translation has been implemented\: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '\#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete). changelog_1240_li=OpenOffice compatibility\: support database name in column names.
changelog_1241_li=The error messages (src/main/org/h2/res/_*.*) can now be translated. changelog_1241_h2=Version 1.0.56 (2007-08-02)
changelog_1242_li=Part of the documentation has been translated to Japanese by Yusuke Fukushima. changelog_1242_li=A new tool to help translation has been implemented\: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '\#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete).
changelog_1243_li=Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem. changelog_1243_li=The error messages (src/main/org/h2/res/_*.*) can now be translated.
changelog_1244_li=The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024. changelog_1244_li=Part of the documentation has been translated to Japanese by Yusuke Fukushima.
changelog_1245_li=A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details. changelog_1245_li=Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem.
changelog_1246_li=The experimental H2 ODBC driver has been removed. changelog_1246_li=The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024.
changelog_1247_li=The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo\=2000000000. changelog_1247_li=A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details.
changelog_1248_li=Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE\: expression REGEXP matchExpression. However, indexes are not yet used. changelog_1248_li=The experimental H2 ODBC driver has been removed.
changelog_1249_li=The old view implementation has been removed. changelog_1249_li=The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo\=2000000000.
changelog_1250_li=The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used. changelog_1250_li=Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE\: expression REGEXP matchExpression. However, indexes are not yet used.
changelog_1251_li=H2 Console\: In the last release, the shutdown button did not work. Fixed. changelog_1251_li=The old view implementation has been removed.
changelog_1252_li=Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE. changelog_1252_li=The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used.
changelog_1253_li=The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed. changelog_1253_li=H2 Console\: In the last release, the shutdown button did not work. Fixed.
changelog_1254_li=Calculation of cache memory usage has been improved. changelog_1254_li=Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE.
changelog_1255_li=In some situations record were released too late from the cache. Fixed. changelog_1255_li=The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed.
changelog_1256_li=The cache size is now measured in KB instead of blocks of 128 byte. changelog_1256_li=Calculation of cache memory usage has been improved.
changelog_1257_li=CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables. changelog_1257_li=In some situations record were released too late from the cache. Fixed.
changelog_1258_li=The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update. changelog_1258_li=The cache size is now measured in KB instead of blocks of 128 byte.
changelog_1259_li=The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row. changelog_1259_li=CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables.
changelog_1260_li=Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot. changelog_1260_li=The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update.
changelog_1261_li=Optimization for conditions like WHERE A\=B AND B\=X (A\=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals. changelog_1261_li=The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row.
changelog_1262_li=Documentation\: the source code in 'Compacting a Database' was incorrect. Fixed. changelog_1262_li=Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot.
changelog_1263_li=In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT. changelog_1263_li=Optimization for conditions like WHERE A\=B AND B\=X (A\=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals.
changelog_1264_li=Views using UNION did not work correctly. Fixed. changelog_1264_li=Documentation\: the source code in 'Compacting a Database' was incorrect. Fixed.
changelog_1265_li=Function tables did not work with views and EXPLAIN. Fixed. changelog_1265_li=In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT.
changelog_1266_li=Views using UNION did not work correctly. Fixed.
changelog_1267_li=Function tables did not work with views and EXPLAIN. Fixed.
download_1000_h1=Downloads download_1000_h1=Downloads
download_1001_h3=Version 1.0.67 (2008-03-15, Current) download_1001_h3=Version 1.0.67 (2008-03-15, Current)
download_1002_a=Windows Installer download_1002_a=Windows Installer
...@@ -2470,7 +2472,7 @@ tutorial_1175_p=This can be done by create it using the NetBeans OpenOffice plug ...@@ -2470,7 +2472,7 @@ tutorial_1175_p=This can be done by create it using the NetBeans OpenOffice plug
tutorial_1176_h2=Java Web Start / JNLP tutorial_1176_h2=Java Web Start / JNLP
tutorial_1177_p=When using Java Web Start / JNLP (Java Network Launch Protocol), permissions tags must be set in the .jnlp file, and the application .jar file must be signed. Otherwise, when trying to write to the file system, the following exception will occur\: java.security.AccessControlException\: access denied (java.io.FilePermission ... read). Example permission tags\: tutorial_1177_p=When using Java Web Start / JNLP (Java Network Launch Protocol), permissions tags must be set in the .jnlp file, and the application .jar file must be signed. Otherwise, when trying to write to the file system, the following exception will occur\: java.security.AccessControlException\: access denied (java.io.FilePermission ... read). Example permission tags\:
tutorial_1178_h2=Using a Connection Pool tutorial_1178_h2=Using a Connection Pool
tutorial_1179_p=For many databases, opening a connection is slow, and it is a good idea to use a connection pool to re-use connections. For H2 however opening a connection usually is fast if the database is already open. Using a connection pool manager for H2 actually slows down the process a bit, except if file encryption is used (in this case opening a connection is about half as fast are using a connection pool). A simple connection pool is\: <a href\="http\://www.source-code.biz/snippets/java/8.htm">Mini Connection Pool Manager</a> . There are other, more complex connection pools available, for example <a href\="http\://jakarta.apache.org/commons/dbcp/">DBCP</a> . tutorial_1179_p=For many databases, opening a connection is slow, and it is a good idea to use a connection pool to re-use connections. For H2 however opening a connection usually is fast if the database is already open. Using a connection pool manager for H2 actually slows down the process a bit, except if file encryption is used (in this case opening a connection is about half as fast as using a connection pool). A simple connection pool manager is included in H2. It is based on the <a href\="http\://www.source-code.biz/snippets/java/8.htm">Mini Connection Pool Manager</a> from Christian d'Heureuse. There are other, more complex connection pools available, for example <a href\="http\://jakarta.apache.org/commons/dbcp/">DBCP</a> . The build-in connection pool manager is used as follows\:
tutorial_1180_h2=Fulltext Search tutorial_1180_h2=Fulltext Search
tutorial_1181_p=H2 supports Lucene full text search and native full text search implementation. tutorial_1181_p=H2 supports Lucene full text search and native full text search implementation.
tutorial_1182_h3=Using the Native Full Text Search tutorial_1182_h3=Using the Native Full Text Search
......
h2/src/main/org/h2/jdbcx/JdbcConnectionPoolManager.java
浏览文件 @ 36e4a4ce
...@@ -5,14 +5,17 @@ ...@@ -5,14 +5,17 @@
* *
* This class is dual-licensed LGPL and under the H2 License. * This class is dual-licensed LGPL and under the H2 License.
* *
* This module is free software: you can redistribute it and/or modify it under * This module is free software: you can redistribute it and/or
* the terms of the GNU Lesser General Public License as published by the Free * modify it under the terms of the GNU Lesser General Public
* Software Foundation, either version 3 of the License, or (at your option) * License as published by the Free Software Foundation, either
* any later version. See http://www.gnu.org/licenses/lgpl.html * version 3 of the License, or (at your option) any later version.
* See http://www.gnu.org/licenses/lgpl.html
* *
* This program is distributed in the hope that it will be useful, but WITHOUT * This program is distributed in the hope that it will be useful,
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * but WITHOUT ANY WARRANTY; without even the implied
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. * warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*/ */
package org.h2.jdbcx; package org.h2.jdbcx;
......
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