Right outer joins on tables that were already 'inner joined' was processed incorrectly.
-
@changelog_1003_li
Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1003_h2
Version 1.2.125 (2009-12-06)
@changelog_1004_li
Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
@changelog_1005_li
When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
The shell tool now has a very simple statement history.
@changelog_1006_li
Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
@changelog_1007_li
Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
Right outer joins on tables that were already 'inner joined' was processed incorrectly.
@changelog_1008_li
Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1009_li
The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
@changelog_1010_li
The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower.
When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
@changelog_1011_li
Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
@changelog_1012_li
The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
@changelog_1013_li
More bugs in the server-less multi-connection mode have been fixed.
Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1014_li
When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
@changelog_1015_li
JdbcConnectionPool.getConnection() could throw a NullPointerException.
The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
@changelog_1016_li
User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
@changelog_1017_li
User defined functions with source code didn't work after re-opening the database.
The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
@changelog_1018_li
The newsfeeds are now Atom 1.0 standard compliant.
More bugs in the server-less multi-connection mode have been fixed.
@changelog_1019_li
When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
@changelog_1020_li
JdbcConnectionPool.getConnection() could throw a NullPointerException.
@changelog_1021_li
User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
@changelog_1022_li
User defined functions with source code didn't work after re-opening the database.
@changelog_1023_li
The newsfeeds are now Atom 1.0 standard compliant.
@changelog_1024_li
The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
@changelog_1020_h2
@changelog_1025_li
Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
@changelog_1026_li
Drop table did not delete lob files in old file store (not PAGE_STORE).
@changelog_1027_h2
Version 1.2.124 (2009-11-20)
@changelog_1021_li
@changelog_1028_li
Clustering: there is now a way to detect which cluster instances are running.
@changelog_1022_li
@changelog_1029_li
ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
@changelog_1023_li
@changelog_1030_li
The file lock thread is now stopped when the database is closed.
@changelog_1024_li
@changelog_1031_li
Issue 140: the Script tool now supports writing to a stream.
@changelog_1025_li
@changelog_1032_li
Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
@changelog_1026_li
@changelog_1033_li
Page store: new databases can not be opened with older versions.
@changelog_1027_li
@changelog_1034_li
Page store: multi-column indexes didn't work if the cache was very small.
@changelog_1028_li
@changelog_1035_li
Page store: opening a database could theoretically result in an endless loop.
@changelog_1029_li
@changelog_1036_li
Page store: adding large indexed columns could get very slow.
@changelog_1030_li
@changelog_1037_li
Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
@changelog_1031_li
@changelog_1038_li
Page store: the recover tool sometimes generated a script file that contained duplicate data.
@changelog_1032_li
@changelog_1039_li
Page store: sometimes opening a read-only database failed.
@changelog_1033_li
@changelog_1040_li
Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
@changelog_1034_li
@changelog_1041_li
Page store: when using a very small page size (128 bytes or smaller), writing a large row could result in an endless recursion. This is only a theoretical problem, as the page size is 2 KB.
@changelog_1035_li
@changelog_1042_li
Page store: getting the min value from a descending index with NULL entries could return the wrong result.
@changelog_1036_li
@changelog_1043_li
Page store: improved auto-recovery after power failure.
@changelog_1037_li
@changelog_1044_li
The JDBC client did not detect that it was not talking to an H2 server. This could result in strange exceptions when trying to connect to another kind of server.
@changelog_1038_li
@changelog_1045_li
User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
@changelog_1039_li
Database file lock: the exception "lock file modified in the future" is longer thrown; instead, opening the file will be delayed by 2 seconds.
@changelog_1046_li
Database file lock: the exception "lock file modified in the future" is no longer thrown; instead, opening the file will be delayed by 2 seconds.
@changelog_1040_li
@changelog_1047_li
Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
@changelog_1041_li
@changelog_1048_li
Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
@changelog_1042_li
@changelog_1049_li
Improved read-only database detection.
@changelog_1043_h2
@changelog_1050_h2
Version 1.2.123 (2009-11-08)
@changelog_1044_li
@changelog_1051_li
Page store: new databases can not be opened with older versions.
@changelog_1045_li
@changelog_1052_li
Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
@changelog_1046_li
@changelog_1053_li
Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
@changelog_1047_li
@changelog_1054_li
When using multi-threaded kernel mode, setting disabling locking (LOCK_MODE=0) will now throw an exception. At this time this combination will result in corruption when multiple threads try to update the same table.
@changelog_1048_li
@changelog_1055_li
The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
@changelog_1049_li
@changelog_1056_li
The Lucene fulltext search now also returns the score.
@changelog_1050_li
@changelog_1057_li
New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
@changelog_1051_li
@changelog_1058_li
Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
@changelog_1052_li
@changelog_1059_li
Improved error messages: identifiers and values are now quoted.
@changelog_1053_li
@changelog_1060_li
Improved error message when casting a value failed: the column name and type is included in the message.
@changelog_1054_li
@changelog_1061_li
Improved support for GAE for Java thanks to Vince Bonfanti.
@changelog_1055_h2
@changelog_1062_h2
Version 1.2.122 (2009-10-28)
@changelog_1056_li
@changelog_1063_li
The native fulltext search now supports streaming CLOB data.
@changelog_1057_li
@changelog_1064_li
If the database URL ends with ;PAGE_STORE=TRUE and a database in the old format exists, it is automatically converted to the new page store format if possible. A backup of the database is created first. Automatic conversion is not supported if the database was not closed normally (if it contains uncommitted transactions).
@changelog_1058_li
@changelog_1065_li
Dropping the current user is now allowed if another admin user exists.
@changelog_1059_li
@changelog_1066_li
Values of type BINARY or BLOB could not be converted to the data type OTHER.
@changelog_1060_li
@changelog_1067_li
SHUTDOWN COMPACT now fully compacts the database.
@changelog_1061_li
@changelog_1068_li
New system properties h2.maxCompactCount and h2.maxCompactTime to allow changing the default behavior (at most 2 seconds compacting when closing the database).
@changelog_1062_li
@changelog_1069_li
New sorted insert optimization (see Performance / Database Performance Tuning).
@changelog_1063_li
@changelog_1070_li
Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
@changelog_1064_li
@changelog_1071_li
Page store: opening a large database was slow if it was not closed before.
@changelog_1065_li
@changelog_1072_li
Page store: new write and read counters in the meta data table. Use SELECT * FROM INFORMATION_SCHEMA.SETTINGS WHERE NAME IN( 'info.FILE_WRITE_TOTAL', 'info.FILE_WRITE', 'info.FILE_READ', 'info.CACHE_MAX_SIZE', 'info.CACHE_SIZE')
@changelog_1066_li
@changelog_1073_li
The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
@changelog_1067_li
@changelog_1074_li
The documentation is no longer available in Japanese because the translation was too much out of sync. Please use the Google translation instead.
@changelog_1068_li
@changelog_1075_li
Certain queries were not sorted if subselect queries were involved
@changelog_1069_li
@changelog_1076_li
More bugs in the server-less multi-connection mode have been fixed: 90097 The database is read only, caches must be cleared on reconnect, etc.
@changelog_1070_h2
@changelog_1077_h2
Version 1.2.121 (2009-10-11)
@changelog_1071_li
@changelog_1078_li
Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
@changelog_1072_li
@changelog_1079_li
CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
@changelog_1073_li
@changelog_1080_li
If a database in the old format exists, it is now used. The system property is used for new databases, or if databases exist in both formats. In any case, the flag in the URL overrides this logic.
@changelog_1074_li
@changelog_1081_li
Page store bugs were fixed. Large values in indexed columns could corrupt the index.
@changelog_1075_li
@changelog_1082_li
The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
@changelog_1076_li
@changelog_1083_li
New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
@changelog_1077_h2
@changelog_1084_h2
Version 1.2.120 (2009-10-04)
@changelog_1078_li
@changelog_1085_li
This is a beta version.
@changelog_1079_li
@changelog_1086_li
Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
@changelog_1080_li
@changelog_1087_li
In version 1.2, the following system properties are now enabled by default: h2.pageStore, h2.nullConcatIsNull, h2.optimizeInList. The default value for h2.defaultMaxLengthInplaceLob is now 4096 (it was 1024 with version 1.1).
@changelog_1081_li
@changelog_1088_li
New databases are now stored in the new 'page store' file format. Existing databases are kept in the old file format. To use the old file format, append ;PAGE_STORE=FALSE to the database URL or set the system property h2.pageStore to false.
@changelog_1082_li
@changelog_1089_li
Issue 125: Renaming primary keys was not persistent. Fixed. Unfortunately, databases created by this version can not be opened with older versions because of this change.
@changelog_1083_li
@changelog_1090_li
Issue 124: Hibernate schema validation failed for decimal/numeric columns. This problem is fixed in the Hibernate dialect that is included with H2 (src/tools/org/hibernate/dialect/H2Dialect.java.txt), but not in Hibernate yet.
@changelog_1084_li
@changelog_1091_li
PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
@changelog_1085_li
@changelog_1092_li
Linked tables now support default values when inserting, updating or merging.
@changelog_1086_li
@changelog_1093_li
Bugfixes in the page store.
@changelog_1087_li
@changelog_1094_li
Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
@changelog_1088_li
@changelog_1095_li
Allow writing to linked tables in readonly databases.
@changelog_1089_h2
@changelog_1096_h2
Version 1.1.119 (2009-09-26)
@changelog_1090_li
@changelog_1097_li
SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1091_li
@changelog_1098_li
Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
@changelog_1092_li
@changelog_1099_li
New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
@changelog_1093_li
@changelog_1100_li
New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
@changelog_1094_li
@changelog_1101_li
The cache algorithm TQ is disabled in this version, because it is unstable, and because the current implementation does not have any measurable advantages over the default.
@changelog_1095_li
@changelog_1102_li
New committer: Christian Peter. He works for <a href="http://www.docware.com">Docware</a> and helped a lot finding and fixing bugs, and generally improving the database. He is now a committer.
@changelog_1096_li
@changelog_1103_li
ChangeFileEncryption did not work with Lob subdirectories. Fixed.
@changelog_1097_li
@changelog_1104_li
Issue 121: JaQu: new simple update and merge methods.
@changelog_1098_li
@changelog_1105_li
Issue 120: JaQu didn't close result sets.
@changelog_1099_li
@changelog_1106_li
Issue 119: JaQu creates wrong WHERE conditions on some inputs.
@changelog_1100_li
@changelog_1107_li
The new page store mechanism is now alpha-level quality. The next release will most likely be "1.2.120 beta" where this mode is enabled by default. To use it right now, append ;PAGE_STORE=TRUE to the database URL. The file format of this mode will probably not change any more.
@changelog_1101_li
@changelog_1108_li
SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
@changelog_1102_li
@changelog_1109_li
The Recover tool now also processes the log files, however applying those changes is still a manual process.
@changelog_1103_li
@changelog_1110_li
New sample application that shows how to pass data to a trigger.
@changelog_1104_li
@changelog_1111_li
More bugs in the server-less multi-connection mode have been fixed: On Windows, two processes could write to the same database at the same time.
@changelog_1105_li
@changelog_1112_li
When loading triggers or other client classes (static functions, database event listener, user aggregate functions, other JDBC drivers), the database now uses the context class loader if the class could not be found using Class.forName().
@changelog_1106_li
@changelog_1113_li
Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
@changelog_1107_li
@changelog_1114_li
Statement.getConnection() threw an exception if the connection was already closed.
@changelog_1108_li
@changelog_1115_li
The native fulltext index kept a reference to a database after the database was closed.
@changelog_1109_li
@changelog_1116_li
Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1110_li
@changelog_1117_li
The optimizer does a better job for joins if indexes are missing.
@changelog_1111_h2
@changelog_1118_h2
Version 1.1.118 (2009-09-04)
@changelog_1112_li
@changelog_1119_li
SHOW COLUMNS only listed indexed columns.
@changelog_1113_li
@changelog_1120_li
When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
@changelog_1114_li
@changelog_1121_li
DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
@changelog_1115_li
@changelog_1122_li
AUTO_INCREMENT now works in the same way in ALTER TABLE ALTER COLUMN as in CREATE TABLE (it does not create a primary key).
@changelog_1116_li
@changelog_1123_li
Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
@changelog_1117_li
@changelog_1124_li
Better support GaeVFS (Google App Engine Virtual File System).
@changelog_1118_li
@changelog_1125_li
JaQu: the plan is to support natural (pure Java / Scala) conditions such as (id == 1 && name.equals("Test")). A proof of concept decompiler is now included (it doesn't work yet).
@changelog_1119_li
@changelog_1126_li
Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1120_li
@changelog_1127_li
PreparedStatement.setObject now converts a java.lang.Character to a string.
@changelog_1121_li
@changelog_1128_li
H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
@changelog_1122_li
@changelog_1129_li
Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
@changelog_1123_li
@changelog_1130_li
H2 Console: indexes of tables of non-default schemas are now also listed.
@changelog_1124_li
@changelog_1131_li
Issue 111: Multi-version concurrency / duplicate primary key after rollback.
@changelog_1125_li
@changelog_1132_li
Issue 110: Multi-version concurrency / wrong exception is thrown.
@changelog_1126_li
@changelog_1133_li
Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
@changelog_1127_li
@changelog_1134_li
Issue 101: The following sequence could throw the exception "Row not found when trying to delete": start a transaction, insert many rows, delete many rows, rollback. The number of rows depends on the cache size.
@changelog_1128_li
@changelog_1135_li
The stack trace of very common exceptions is no longer written to the .trace.db file by default.
@changelog_1129_li
@changelog_1136_li
An optimization for OR is implemented, but disabled by default. Expressions of the type X=1 OR X=2 are converted to X IN(1, 2). To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver.
@changelog_1130_li
@changelog_1137_li
An optimization for IN(..) and IN(SELECT...) is implemented, but disabled by default. To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver. If enabled, this overrides h2.optimizeIn and h2.optimizeInJoin. Unlike now, this optimization will also speed up updates and deletes.
@changelog_1131_h2
@changelog_1138_h2
Version 1.1.117 (2009-08-09)
@changelog_1132_li
@changelog_1139_li
New committer: Sam Van Oort has been contributing to H2 since quite some time in many ways (on the mailing list, documentation, and in the form of patches). He is now a committer.
@changelog_1133_li
@changelog_1140_li
JaQu: the order of the fields in the database no longer needs to match the order in the database.
@changelog_1134_li
@changelog_1141_li
Issue 103: MVCC: the setting MAX_MEMORY_UNDO can currently not be supported when using multi-version concurrency, that means the complete undo log must fit in memory.
@changelog_1135_li
@changelog_1142_li
LIKE: the escape mechanism can now be disable using ESCAPE ''. The default escape character can be changed using the system property h2.defaultEscape. The default is still '\' (as in MySQL and PostgreSQL).
@changelog_1136_li
@changelog_1143_li
Views using functions were not re-evaluated when necessary.
@changelog_1137_li
@changelog_1144_li
Improved MySQL compatibility for SHOW COLUMNS.
@changelog_1138_li
@changelog_1145_li
Improved PostgreSQL compatibility for timestamp literals with timezone.
@changelog_1139_li
@changelog_1146_li
Sergi Vladykin translated the error messages to Russian. Thanks a lot!
@changelog_1140_li
@changelog_1147_li
Support for Java 6 DatabaseMetaData.getTables, getColumns, getProcedures, and getProcedureColumns.
@changelog_1141_li
@changelog_1148_li
Issue 101: Rollback of a large transaction (more than 100000 rows) could fail.
@changelog_1142_li
@changelog_1149_li
Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1143_li
@changelog_1150_li
The functions LENGTH, OCTET_LENGTH, and BIT_LENGTH now return BIGINT.
@changelog_1144_li
@changelog_1151_li
Data types CLOB and BLOB: the maximum precision was Integer.MAX_VALUE, it is now Long.MAX_VALUE.
@changelog_1145_li
@changelog_1152_li
Multi-threaded kernel: creating and dropping temporary database objects and the potentially free pages list was not correctly synchronized. Thanks a lot to Eric Faulhaber for the test case and patch!
@changelog_1146_li
@changelog_1153_li
Parsing SQL script files is now faster.
@changelog_1147_li
@changelog_1154_li
CSV reading is now faster.
@changelog_1148_li
@changelog_1155_li
SimpleResultSet.newInstance(SimpleRowSource rs) did not work.
@changelog_1149_h2
@changelog_1156_h2
Version 1.1.116 (2009-07-18)
@changelog_1150_li
@changelog_1157_li
Server-less multi-connection mode: more bugs are fixed.
@changelog_1151_li
@changelog_1158_li
The built-in help (INFORMATION_SCHEMA.HELP) is smaller, shrinking the jar file size a bit.
@changelog_1152_li
@changelog_1159_li
H2 Console: column of tables of non-default schemas are now also listed, except for schemas starting with 'INFO'.
@changelog_1153_li
@changelog_1160_li
ALTER TABLE: removing an auto-increment or identity column didn't remove the sequence.
@changelog_1154_li
@changelog_1161_li
Creating indexes is now a bit faster.
@changelog_1155_li
@changelog_1162_li
PG Server: new system property h2.pgClientEncoding to explicitly set the encoding for clients that don't send the encoding (the default encoding is UTF-8). Thanks a lot to Sergi Vladykin for the patch!
@changelog_1156_li
@changelog_1163_li
PG Server: improved compatibility by using the type ids of the PostgreSQL driver. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1157_li
@changelog_1164_li
H2 Console: Oracle system tables are no longer listed, improving performance.
@changelog_1158_li
@changelog_1165_li
Result sets are now read-only except if the statement or prepared statement was created with the concurrency ResultSet.CONCUR_UPDATABLE. This change is required because the old behavior (all result set are updatable) violated the JDBC spec. For backward compatibility, use the system property h2.defaultResultSetConcurrency.
@changelog_1159_li
@changelog_1166_li
New system property h2.defaultResultSetConcurrency to change the default result set concurrency.
@changelog_1160_li
@changelog_1167_li
JDBC: using an invalid result set type or concurrency now throws an exception.
@changelog_1161_li
@changelog_1168_li
If a pooled connection was not closed but garbage collected, a NullPointerException could occur.
@changelog_1162_li
@changelog_1169_li
Fulltext search: a NullPointerException was thrown when updating a value that was NULL previously.
@changelog_1163_li
@changelog_1170_li
The Recover tool did not work with .data.db files of the wrong size.
@changelog_1164_li
@changelog_1171_li
Triggers: if there was an exception when initializing a trigger, this exception could be hidden, and in some cases (specially when using the Lucene fulltext index mechanism) a NullPointerException was thrown later on. Now the exception that occurred on init is thrown when changing data.
@changelog_1165_li
@changelog_1172_li
The soft-references cache (CACHE_TYPE=SOFT_LRU) could throw a NullPointerException.
@changelog_1166_li
@changelog_1173_li
To enable the new page store mechanism, append ;PAGE_STORE=TRUE to the database URL. or set the system property h2.pageStore to true. This mechanism is still experimental, and the file format will change, but it is quite stable now.
@changelog_1167_h2
@changelog_1174_h2
Version 1.1.115 (2009-06-21)
@changelog_1168_li
@changelog_1175_li
The new storage mechanism is now alpha quality. To try it out, set the system property "h2.pageStore" to "true" (java -Dh2.pageStore=true). There are still bugs to be found and fixed, for example inserting many rows references a lot of main memory. Performance is currently about the same as with the regular storage mechanism, but the database file size is smaller. The file format is not stable yet.
@changelog_1169_li
@changelog_1176_li
ALTER TABLE could throw an exception "object already exists" in some cases.
@changelog_1170_li
@changelog_1177_li
Views: in some situations, an ArrayIndexOutOfBoundsException was thrown when using the same view concurrently.
@changelog_1171_li
@changelog_1178_li
java.util.UUID is now supported in PreparedStatement.setObject and user defined Java functions. ResultSet.getObject() returns a java.util.UUID when using the UUID data type.
@changelog_1172_li
@changelog_1179_li
H2 Console: the language was reset to the browser language when disconnecting.
@changelog_1173_li
@changelog_1180_li
H2 Console: improved Polish translation.
@changelog_1174_li
@changelog_1181_li
Server-less multi-connection mode: more bugs are fixed.
@changelog_1175_li
@changelog_1182_li
The download page now included the SHA1 checksums.
@changelog_1176_li
@changelog_1183_li
Shell tool: the file encoding workaround is now documented if you run java org.h2.tools.Shell -?.
@changelog_1177_li
@changelog_1184_li
The RunScript tool and SQL statement did not work with the compression method LZF.
@changelog_1178_li
@changelog_1185_li
Fulltext search: searching for NULL or an empty string threw an exception.
@changelog_1179_li
@changelog_1186_li
Lucene fulltext search: FTL_DROP_ALL did not drop the triggers.
@changelog_1180_li
@changelog_1187_li
Backup: if the database contained CLOB or BLOB data, the backup included a file entry for the LOB directory. This caused the restore to fail.
@changelog_1181_li
@changelog_1188_li
Data types: LONG is now an alias for BIGINT.
@changelog_1182_h2
@changelog_1189_h2
Version 1.1.114 (2009-06-01)
@changelog_1183_li
@changelog_1190_li
ResultSetMetaData.getColumnClassName returned the wrong class for CLOB and BLOB columns.
@changelog_1184_li
@changelog_1191_li
Fulltext search: data is no longer deleted and re-inserted if the indexed columns didn't change.
@changelog_1185_li
@changelog_1192_li
In some situations, an ArrayIndexOutOfBoundsException was thrown when adding rows. This was caused by a bug in the b-tree code.
@changelog_1186_li
@changelog_1193_li
Microsoft Windows Vista: when using the the installer, Vista wrote "This program may not have installed correctly." This message should no longer appear (in the h2.nsi file, the line 'RequestExecutionLevel highest' was added).
@changelog_1187_li
@changelog_1194_li
The Recover tool did not always work when the database contains referential integrity constraints.
@changelog_1188_li
@changelog_1195_li
Java 1.5 is now required to run H2. If required, Retrotranslator can be used to create a Java 1.4 version (http://retrotranslator.sourceforge.net/).
@changelog_1189_h2
@changelog_1196_h2
Version 1.1.113 (2009-05-21)
@changelog_1190_li
@changelog_1197_li
Shell tool: the built-in commands EXIT, HELP, ?, LIST, and so on didn't work with a semicolon at the end.
@changelog_1191_li
@changelog_1198_li
JDK 1.5 is now required to build the jar file. However it is still possible to create a jar file for Java 1.4. For details, see buildRelease.sh and buildRelease.bat. As an alternative, compile using JDK 1.5 or 1.6 and use Retrotranslator to create a Java 1.4 version (http://retrotranslator.sourceforge.net/).
@changelog_1192_li
@changelog_1199_li
When deleting or updating many rows in a table, the space in the index file was not re-used in the default mode (persistent database, b-tree index, LOG=1). This caused the index file to grow over time. Workarounds were to delete and re-created the index file, alter the table (add a remove a column), or append ;LOG=2 to the database URL. To disable the change, set the system property h2.reuseSpaceBtreeIndex to false.
@changelog_1193_li
@changelog_1200_li
Identifiers with a digit and then a dollar sign didn't work. Example: A1$B.
@changelog_1194_li
@changelog_1201_li
MS SQL Server compatibility: support for linked tables with NVARCHAR, NCHAR, NCLOB, and LONGNVARCHAR.
@changelog_1195_li
@changelog_1202_li
Android: workaround for a problem when using read-only databases in zip files (skip seems to be implemented incorrectly on the Android system).
@changelog_1196_li
@changelog_1203_li
Calling execute() or prepareStatement() with null as the SQL statement now throws an exception.
@changelog_1197_li
@changelog_1204_li
Benchmark: the number of executed statements was incorrect. The H2 database was loaded at the beginning of the test to collect results, now it is loaded at the very end. Thanks to Fred Toussi from HSQLDB for reporting those problems. However the changed do not affect the relative performance.
@changelog_1198_li
@changelog_1205_li
H2 Console: command line settings are no longer stored in the properties file. They are now only used for the current process, except if they are explicitly saved.
@changelog_1199_li
@changelog_1206_li
Cache: support for a second level soft-references cache. To enable it, append ;CACHE_TYPE=SOFT_LRU (or SOFT_TQ) to the database URL, or set the system property h2.cacheTypeDefault to "SOFT_LRU" / "SOFT_TQ". Enabling the second level cache reduces performance for small databases, but speeds up large databases. It makes sense to use it if the available memory size is unknown. Thanks a lot to Jan Kotek!
@changelog_1200_h2
@changelog_1207_h2
Version 1.1.112 (2009-05-01)
@changelog_1201_li
@changelog_1208_li
JdbcPreparedStatement.toString() could throw a NullPointerException.
@changelog_1202_li
@changelog_1209_li
EclipseLink: added H2Platform.supportsIdentity().
@changelog_1203_li
@changelog_1210_li
Connection pool: the default login timeout is now 5 minutes.
@changelog_1204_li
@changelog_1211_li
After truncating tables, opening large databases could become slow because indexes were always re-built unnecessarily when opening.
@changelog_1205_li
@changelog_1212_li
More bugs in the server-less multi-connection mode have been fixed: Sometimes parameters of prepared statements were lost when a reconnecting. Concurrent read operations were slow. To improve performance, executeQuery(..) must be used for queries (execute(..) switches to the write mode, which is slow).
@changelog_1206_li
@changelog_1213_li
GROUP BY queries with a self-join (join to the same table) that were grouped by columns with indexes returned the wrong result in some cases.
@changelog_1207_li
@changelog_1214_li
Improved error message when the .lock.db file modification time is in the future.
@changelog_1208_li
@changelog_1215_li
The MERGE statement now returns 0 as the generated key if the row was updated.
@changelog_1209_li
@changelog_1216_li
Running code coverage is now automated.
@changelog_1210_li
@changelog_1217_li
A file system implementation can now be registered using FileSystem.register.
@changelog_1211_li
@changelog_1218_li
The database file system is no longer included in the jar file, it moved to the test section.
@changelog_1212_h2
@changelog_1219_h2
Version 1.1.111 (2009-04-10)
@changelog_1213_li
@changelog_1220_li
In-memory databases can now run inside the Google App Engine.
@changelog_1214_li
@changelog_1221_li
Queries that are ordered by an indexed column returned no rows in certain cases (if all rows were deleted from the table previously, and there is a low number of rows in the table, and when not using other conditions, and when using the default b tree index).
@changelog_1215_li
@changelog_1222_li
The wrong exception was thrown when using unquoted text for the SQL statements COMMENT, ALTER USER, and SET PASSWORD.
@changelog_1216_li
@changelog_1223_li
The built-in connection pool did not roll back transactions and enable autocommit enabled after closing a connection.
@changelog_1217_li
@changelog_1224_li
Sometimes a StackOverflow occurred when checking for deadlock. See also http://code.google.com/p/h2database/issues/detail?id=61
@changelog_1218_li
@changelog_1225_li
The Shell tool no longer truncates results with only one column, and displays a message if data was truncated.
@changelog_1219_h2
@changelog_1226_h2
Version 1.1.110 (2009-04-03)
@changelog_1220_li
@changelog_1227_li
Support for not persistent in-memory tables in regular (persistent) databases using CREATE MEMORY TABLE(..) NOT PERSISTENT. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1221_li
@changelog_1228_li
The H2 Console trimmed the password (removed leading and trailing spaces). This is no longer the case, to support encrypted H2 database with an empty user password.
@changelog_1222_li
@changelog_1229_li
The data type of a SUBSTRING method was wrong.
@changelog_1223_li
@changelog_1230_li
ResultSet.findColumn and get methods with column label parameters now also check for matching column names (like most databases except MySQL).
@changelog_1224_li
@changelog_1231_li
H2 Console: the browser system property now supports a list of arguments. Example: java -Dh2.browser="open,-a,Safari,%url" ...
@changelog_1225_li
@changelog_1232_li
Improved Javadoc navigation (similar to Scaladoc).
@changelog_1226_li
@changelog_1233_li
H2 Console: auto-complete of identifiers did not work correctly for H2 databases in MySQL mode.
@changelog_1227_li
@changelog_1234_li
DISTINCT and GROUP BY on a CLOB column was broken.
@changelog_1228_li
@changelog_1235_li
The FTP server moved to the tools section and is no longer included in the h2*.jar file.
@changelog_1229_li
@changelog_1236_li
Improved error message for unsupported features: now the message says what exactly is not supported.
@changelog_1230_li
@changelog_1237_li
Improved OSGi support.
@changelog_1231_li
@changelog_1238_li
Some internal caches did not use the LRU mechanism. Fixed (LOB file list, optimizer cost cache, trace system, view indexes, collection keys, compressed in-memory file system).
@changelog_1232_li
@changelog_1239_li
The API of the tools changed a bit (each tool now returns an exit code).
@changelog_1233_li
@changelog_1240_li
Command line help of the tools now match the javadocs. The build converts the javadocs to a resource that is read by the tool at runtime. This should not have an effect on using the database, but it reduces duplicate and out-of-sync documentation.
@changelog_1234_li
@changelog_1241_li
CREATE TABLE: improved compatibility (support for UNIQUE NOT NULL).
@changelog_1235_li
@changelog_1242_li
DatabaseMetaData.getSQLKeywords now returns the correct list.
@changelog_1236_li
@changelog_1243_li
Deterministic user defined functions did not work when the parameter was a column. Fixed.
@changelog_1237_li
@changelog_1244_li
JdbcConnectionPool.setLoginTimeout with 0 now uses the default timeout.
@changelog_1238_li
@changelog_1245_li
Creating a JdbcConnectionPool has been simplified a bit.
@changelog_1239_li
@changelog_1246_li
The built-in connection pool did not re-use connections. Getting a connection using the built-in JdbcConnectionPool is now about 70 times faster than opening connections using DriverManager.getConnection.
@changelog_1240_li
@changelog_1247_li
More bugs in the server-less multi-connection mode have been fixed: If a process terminated while writing, other open connections were blocked. If two processes were writing to the database, sometimes the database was corrupt after closing.
@changelog_1241_li
@changelog_1248_li
Linked tables to SQLite database can now be created.
@changelog_1242_li
@changelog_1249_li
Nested IN(IN(...)) didn't work.
@changelog_1243_li
@changelog_1250_li
NIO storage: the nio: prefix was using memory mapped files instead of FileChannel.
@changelog_1244_h2
@changelog_1251_h2
Version 1.1.109 (2009-03-14)
@changelog_1245_li
@changelog_1252_li
The optimization for IN(...) is now only used if comparing a column with an index.
@changelog_1246_li
@changelog_1253_li
User defined functions can now be deterministic (see CREATE ALIAS documentation).
@changelog_1247_li
@changelog_1254_li
Multiple nested queries in the FROM clause with parameters did not always work.
@changelog_1248_li
@changelog_1255_li
When converting CLOB to BINARY, each character resulted in one byte. Now, the text is parsed as a hex as when converting VARCHAR.
@changelog_1249_li
@changelog_1256_li
New experimental NIO storage mechanism with both FileChannel and memory mapped files. To use it, use the file name prefix nio: or nioMapped: as in jdbc:h2:nio:~/test. So far it looks like NIO storage is faster on Mac OS but slower on some Windows systems. Thanks a lot to Jan Kotek for the patch!
@changelog_1250_li
@changelog_1257_li
The functions BITOR, BITAND, BITXOR, and MOD now accept and return BIGINT instead of INT.
@changelog_1251_li
@changelog_1258_li
Could not use the same linked table multiple times in the same query.
@changelog_1252_li
@changelog_1259_li
Bugs in the server-less multi-connection mode have been fixed.
@changelog_1253_li
@changelog_1260_li
Column names could not be named "UNIQUE" (with the quotes).
@changelog_1254_li
@changelog_1261_li
New system function TRANSACTION_ID() to get the current transaction identifier for a session.
@changelog_1255_h2
@changelog_1262_h2
Version 1.1.108 (2009-02-28)
@changelog_1256_li
@changelog_1263_li
When the shutdown hook closed the database, the last log file was deleted too early. This could cause uncommitted changes to be persisted. In some cases, this could cause data corruption.
@changelog_1257_li
@changelog_1264_li
JdbcConnectionPool: it was possible to set a negative connection pool size.
@changelog_1258_li
@changelog_1265_li
Fulltext search did not support table names with a backslash.
@changelog_1259_li
@changelog_1266_li
The internal IntArray class did not work correctly when initialized with a zero length array.
@changelog_1260_li
@changelog_1267_li
The H2 Console web application (war file) did only support ASCII characters. Now UTF-8 is supported.
@changelog_1261_li
@changelog_1268_li
DATEADD does no longer require that the argument is a timestamp.
@changelog_1262_li
@changelog_1269_li
The database file locking mechanism didn't work correctly on Mac OS.
@changelog_1263_li
@changelog_1270_li
Some built-in functions reported the wrong precision, scale, and display size.
@changelog_1264_li
@changelog_1271_li
MySQL compatibility for CREATE TABLE is improved (UNSIGNED, KEY).
@changelog_1265_li
@changelog_1272_li
Recovery did not work if there were more than 255 lobs stored as files.
@changelog_1266_li
@changelog_1273_li
New experimental mode to support multiple read-write connections without starting a server. To enable this mode, append ;FILE_LOCK=SERIALIZED;OPEN_NEW=TRUE to the database URL. Don't expect high performance when multiple concurrent writers.
@changelog_1267_li
@changelog_1274_li
In a web application, the database classes are not unloaded if a connection is open. This may cause out of memory when re-deploying a web application. The DbStarter is changed to close all connections to the configured database (by executing SHUTDOWN).
@changelog_1268_li
@changelog_1275_li
The WebServlet did not close the database when un-deploying the web application.
@changelog_1269_li
@changelog_1276_li
The exception message of failed INSERT or MERGE statements now includes all values and the row number.
@changelog_1270_li
@changelog_1277_li
If opening a database failed with an out of memory exception, some files were not closed.
@changelog_1271_li
@changelog_1278_li
Optimizer: the expected runtime calculation was incorrect. The fixed calculation should give slightly better query plans when using many joins.
@changelog_1272_li
@changelog_1279_li
Improved exception message when connecting to a just started server fails.
@changelog_1273_li
@changelog_1280_li
Connection.isValid is a bit faster.
@changelog_1274_li
@changelog_1281_li
H2 Console: the autocomplete feature has been improved a bit. It can now better parse conditions.
@changelog_1275_li
@changelog_1282_li
When restarting a web application in Tomcat, an exception was thrown sometimes. In most cases this was a NullPointerException. A workaround in H2 has been implemented. The root cause of the problem is now documented in the FAQ: Tomcat sets all static fields (final or non-final) to null when unloading a web application. A workaround is to put the h2.jar in the lib directory, or set the system property org.apache.catalina.loader.WebappClassLoader.ENABLE_CLEAR_REFERENCES to false.
@changelog_1276_h2
@changelog_1283_h2
Version 1.1.107 (2009-01-24)
@changelog_1277_li
@changelog_1284_li
Some DatabaseMetaData operations did not work for non-admin users for versions 1.1.x.
@changelog_1278_li
@changelog_1285_li
The MySQL compatibility extension fromUnixTime now used the English locale.
@changelog_1279_li
@changelog_1286_li
When using LOG=2 and repeatedly updating the last row rows of a table, the index file grew quickly.
@changelog_1280_li
@changelog_1287_li
In versions 1.1.105 and 1.1.106, encrypted script files of earlier versions could not be processed. This is now again possible. The problem was that such script files were stored in a special format (STORAGE=TEXT) but support for this format was removed in version 1.1.105.
@changelog_1281_li
@changelog_1288_li
Enabling the trace mechanism by creating a specially named file is no longer supported.
@changelog_1282_h2
@changelog_1289_h2
Version 1.1.106 (2009-01-04)
@changelog_1283_li
@changelog_1290_li
Statement.setQueryTimeout did not work correctly for some statements.
@changelog_1284_li
@changelog_1291_li
CREATE DOMAIN: built-in data types can now only be changed if no tables exist.
@changelog_1285_li
@changelog_1292_li
Linked tables: a workaround for Oracle DATE columns has been implemented.
@changelog_1286_li
@changelog_1293_li
DatabaseMetaData.getPrimaryKeys: the column PK_NAME now contains the constraint name instead of the index name (compatibility for PostgreSQL and Derby).
@changelog_1287_li
@changelog_1294_li
Using IN(..) inside a IN(SELECT..) did not always work.
@changelog_1288_li
@changelog_1295_li
Views with IN(..) that used a view itself did not work.
@changelog_1289_li
@changelog_1296_li
Union queries with LIMIT or ORDER BY that are used in a view or subquery did not work.
@changelog_1290_li
@changelog_1297_li
The license change a bit: so far the license was modified to say 'Swiss law'. This is now changed back to the original 'US law'. This was requested by a user, and I don't see a problem.
@changelog_1291_li
@changelog_1298_li
Constraints for local temporary tables now session scoped. So far they were global. Thanks a lot to Eric Faulhaber for finding and fixing this problem!
@changelog_1292_li
@changelog_1299_li
When using the auto-server mode, and if the lock file was modified in the future, the wrong exception was thrown ('Connection is broken' instead of 'Error opening database: lock file modified in the future').
@changelog_1293_h2
@changelog_1300_h2
Version 1.1.105 (2008-12-19)
@changelog_1294_li
@changelog_1301_li
The setting STORAGE=TEXT is no longer supported.
@changelog_1295_li
@changelog_1302_li
Deleting a database using the tool DeleteDbFiles deleted LOB files of other databases in the same directory.
@changelog_1296_li
@changelog_1303_li
When used in a subquery, LIKE and IN(..) did not work correctly sometimes.
@changelog_1297_li
@changelog_1304_li
The fulltext search documentation has been improved.
@changelog_1298_li
@changelog_1305_li
ARRAY_GET returned the wrong data type (ARRAY). Now it returns VARCHAR.
@changelog_1299_li
@changelog_1306_li
Natural join: the joined columns are not repeated any more when using SELECT *.
@changelog_1300_li
@changelog_1307_li
User defined aggregate functions: the method getType expected internal data types instead of SQL types.
@changelog_1301_li
@changelog_1308_li
User defined aggregate functions did not work if there was no group by expression.
@changelog_1302_li
@changelog_1309_li
MySQL compatibility: support for := assignment as in @sum:=@sum+x
@changelog_1303_li
@changelog_1310_li
INSERT INTO TEST(SELECT * FROM TEST) is now supported.
@changelog_1304_li
@changelog_1311_li
Each session threw an invisible exception when garbage collected.
@changelog_1305_li
@changelog_1312_li
Foreign key constraints that refer to a quoted column did not work.
@changelog_1306_li
@changelog_1313_li
New meta data column INFORMATION_SCHEMA.TABLES.LAST_MODIFICATION to get the table modification counter.
@changelog_1307_li
@changelog_1314_li
Shell: line comments didn't work correctly.
@changelog_1308_li
@changelog_1315_li
H2 Console: columns are now listed for up to 500 tables instead of 100.
@changelog_1309_li
@changelog_1316_li
H2 Console: Cmd+Enter executes the current statement, Alt+Space for autocomplete.
@changelog_1310_li
@changelog_1317_li
JaQu: the maximum length of a column can now be defined using maxLength. For an example, see Product.java (maxLength(category, 255)).
@changelog_1311_li
@changelog_1318_li
Rıdvan Ağar has completed the Turkish translation of the H2 Console. Thanks a lot!
@changelog_1312_h2
@changelog_1319_h2
Version 1.1.104 (2008-11-28)
@changelog_1313_li
@changelog_1320_li
If a query that was used like a table contained group by and was ordered by an expression that is not in the column list, an exception was thrown.
@changelog_1314_li
@changelog_1321_li
JaQu: tables are now auto-created when running a query.
@changelog_1315_li
@changelog_1322_li
The optimizer had problems with function tables (for example CSVREAD and FTL_SEARCH). A new system property h2.estimatedFunctionTableRows (default 1000) defines how many rows can be expected in the table.
@changelog_1316_li
@changelog_1323_li
The function SUM could overflow when using large values. It returns now a data type that is safe.
@changelog_1317_li
@changelog_1324_li
The function AVG could overflow when using large values. Fixed.
@changelog_1318_li
@changelog_1325_li
The emergency reserve file has been removed. It didn't provide an appropriate solution for the problem. It is still possible for an application to detect and deal with the low disk space problem (deleting temporary files for example) using DatabaseEventListener.diskSpaceIsLow, but this method is now always called with stillAvailable=0.
@changelog_1319_li
@changelog_1326_li
Build: JAVA_HOME is now automatically detected on Mac OS X.
@changelog_1320_li
@changelog_1327_li
Testing for local connections was very slow on some systems.
@changelog_1321_li
@changelog_1328_li
The cache memory usage calculation is more conservative.
@changelog_1322_li
@changelog_1329_li
Allocating space got slower and slower the larger the database.
@changelog_1323_li
@changelog_1330_li
ALTER TABLE ALTER COLUMN could throw the wrong exception in the last version (Table not found).
@changelog_1324_li
@changelog_1331_li
Updatable result sets: the key columns can now be updated.
@changelog_1325_li
@changelog_1332_li
The H2DatabaseProvider for ActiveObjects is now included in the tools section.
@changelog_1326_li
@changelog_1333_li
The H2Platform for Oracle Toplink Essential has been improved a bit.
@changelog_1327_li
@changelog_1334_li
The Windows service to start H2 didn't work in version 1.1.
@changelog_1328_li
@changelog_1335_li
File systems with a maximum file size (for example FAT) are now supported using the file prefix 'split:'. In this case the files are split in parts of 1 GB. Example URL: jdbc:h2:split:~/db/test. If you want to split into parts of 1 MB, use jdbc:h2:split:20:~/db/test (the part size is 1 << x, the default is 30 meaning 1 GB).
@changelog_1329_li
@changelog_1336_li
The database now tries to detect if the classloader or virtual machine has almost shut down by checking if static final variables are set to null. This should help reduce exceptions when stopping the web application.
@changelog_1330_li
@changelog_1337_li
Compatibility for MS SQL Server DATEDIFF(YYYY, .., ..)
@changelog_1331_li
@changelog_1338_li
ResultSet.getObject for CLOB or BLOB will return a java.sql.Clob / java.sql.Blob object instead of a java.io.Reader / java.io.InputStream as in version 1.0. This behavior can be changed using the system property h2.returnLobObjects (true by default for version 1.1).
@changelog_1332_li
@changelog_1339_li
The interface CloseListener has a new method 'remove' that is called when the trigger is dropped.
@changelog_1333_li
@changelog_1340_li
Fulltext search: there was a memory leak when creating and dropping fulltext indexes in a loop.
To start the <a href="quickstart.html#h2_console">H2 Console tool</a>, double click the jar file, or run <code>java -jar h2*.jar</code>, <code>h2.bat</code>, or <code>h2.sh</code>.
...
...
@@ -2492,7 +2513,7 @@ database.H2Platform
Downloads
@download_1001_h3
Version 1.2.124 (2009-11-20, Beta)
Version 1.2.125 (2009-12-06, Beta)
@download_1002_a
Windows Installer
...
...
@@ -6338,7 +6359,7 @@ Small footprint: around 1 MB jar file size
Download Beta
@mainWeb_1007_td
Version 1.2.124 (2009-11-20):
Version 1.2.125 (2009-12-06):
@mainWeb_1008_a
Windows Installer (4 MB)
...
...
@@ -8729,175 +8750,175 @@ Support select * from dual a left join dual b on b.x=(select max(x) from dual)
Optimization: don't lock when the database is read-only
@roadmap_1225_li
Integrate spatial functions from http://geosysin.iict.ch/irstv-trac/wiki/H2spatial/Download
Issue 146: Support merge join.
@roadmap_1226_li
Support COSH, SINH, and TANH functions
Integrate spatial functions from http://geosysin.iict.ch/irstv-trac/wiki/H2spatial/Download
@roadmap_1227_li
Oracle: support DECODE method (convert to CASE WHEN).
Support COSH, SINH, and TANH functions
@roadmap_1228_li
Native search: support "phrase search", wildcard search (* and ?), case-insensitive search, boolean operators, and grouping
Oracle: support DECODE method (convert to CASE WHEN).
@roadmap_1229_li
Improve documentation of access rights
Native search: support "phrase search", wildcard search (* and ?), case-insensitive search, boolean operators, and grouping
@roadmap_1230_li
Support ENUM data type (see MySQL, PostgreSQL, MS SQL Server, maybe others)
Improve documentation of access rights
@roadmap_1231_li
Command line option for the H2 Console and TCP configuration (which .h2.server.properties and .h2.keystore to use)
Support ENUM data type (see MySQL, PostgreSQL, MS SQL Server, maybe others)
@roadmap_1232_li
Support a schema name for Java functions
Command line option for the H2 Console and TCP configuration (which .h2.server.properties and .h2.keystore to use)
@roadmap_1233_li
Remember the user defined data type (domain) of a column
Support a schema name for Java functions
@roadmap_1234_li
Support Jackcess (MS Access databases)
Remember the user defined data type (domain) of a column
@roadmap_1235_li
Built-in methods to write large objects (BLOB and CLOB): FILE_WRITE('test.txt', 'Hello World')
Support Jackcess (MS Access databases)
@roadmap_1236_li
MVCC: support transactionally consistent backups using SCRIPT
Built-in methods to write large objects (BLOB and CLOB): FILE_WRITE('test.txt', 'Hello World')
@roadmap_1237_li
Improve time to open large databases (see mail 'init time for distributed setup')
MVCC: support transactionally consistent backups using SCRIPT
@roadmap_1238_li
Move Maven 2 repository from hsql.sf.net to h2database.sf.net
Improve time to open large databases (see mail 'init time for distributed setup')
Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
Javadoc: document design patterns used
@roadmap_1242_li
Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
@roadmap_1243_li
Improve LOB in directories performance
Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
@roadmap_1244_li
Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
Improve LOB in directories performance
@roadmap_1245_li
HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
@roadmap_1246_li
Translation: use ?? in help.csv
HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
@roadmap_1247_li
Translated .pdf
Translation: use ?? in help.csv
@roadmap_1248_li
Cluster: hot deploy (adding a node at runtime)
Translated .pdf
@roadmap_1249_li
MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
Cluster: hot deploy (adding a node at runtime)
@roadmap_1250_li
Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
@roadmap_1251_li
RECOVER=2 to backup the database, run recovery, open the database
Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
@roadmap_1252_li
Recovery should work with encrypted databases
RECOVER=2 to backup the database, run recovery, open the database
@roadmap_1253_li
Corruption: new error code, add help
Recovery should work with encrypted databases
@roadmap_1254_li
Space reuse: after init, scan all storages and free those that don't belong to a live database object
Corruption: new error code, add help
@roadmap_1255_li
Use FilterIn / FilterOut putStream?
Space reuse: after init, scan all storages and free those that don't belong to a live database object
@roadmap_1256_li
Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
Use FilterIn / FilterOut putStream?
@roadmap_1257_li
Support NOCACHE table option (Oracle)
Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
@roadmap_1258_li
Support table partitioning.
Support NOCACHE table option (Oracle).
@roadmap_1259_li
Index usage for UPDATE ... WHERE .. IN (SELECT...)
Support table partitioning.
@roadmap_1260_li
Add regular javadocs (using the default doclet, but another css) to the homepage.
Index usage for UPDATE ... WHERE .. IN (SELECT...)
@roadmap_1261_li
The database should be kept open for a longer time when using the server mode.
Add regular javadocs (using the default doclet, but another css) to the homepage.
@roadmap_1262_li
Javadocs: for each tool, add a copy & paste sample in the class level.
The database should be kept open for a longer time when using the server mode.
@roadmap_1263_li
Javadocs: add @author tags.
Javadocs: for each tool, add a copy & paste sample in the class level.
@roadmap_1264_li
Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
Javadocs: add @author tags.
@roadmap_1265_li
MySQL compatibility: real SQL statement for DESCRIBE TEST
Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
@roadmap_1266_li
Use a default delay of 1 second before closing a database.
MySQL compatibility: real SQL statement for DESCRIBE TEST
@roadmap_1267_li
Write (log) to system table before adding to internal data structures.
Use a default delay of 1 second before closing a database.
@roadmap_1268_li
Support very large deletes and updates.
Write (log) to system table before adding to internal data structures.
@roadmap_1269_li
Doclet (javadocs): constructors are not listed.
Support very large deletes and updates.
@roadmap_1270_li
Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
Doclet (javadocs): constructors are not listed.
@roadmap_1271_li
Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
@roadmap_1272_li
MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
@roadmap_1273_li
Oracle compatibility: support NLS_DATE_FORMAT.
MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
@roadmap_1274_li
Support flashback queries as in Oracle.
Oracle compatibility: support NLS_DATE_FORMAT.
@roadmap_1275_li
Import / Export of fixed with text files.
Support flashback queries as in Oracle.
@roadmap_1276_li
Support OUT parameters in user-defined procedures.
Import / Export of fixed with text files.
@roadmap_1277_li
Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
Support OUT parameters in user-defined procedures.
@roadmap_1278_li
HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
@roadmap_1279_li
Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
@roadmap_1280_li
Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
@roadmap_1281_li
Support merge join.
Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
@roadmap_1282_li
H2 Console: in-place autocomplete.
...
...
@@ -9170,43 +9191,43 @@ Combine Server and Console tool (only keep Server).
Store the Lucene index in the database itself.
@roadmap_1372_li
Oracle compatibility: support DECODE(x, ...).
Support standard MERGE statement: http://en.wikipedia.org/wiki/Merge_%28SQL%29
@roadmap_1373_li
Console: Start Browser: if ip number changed, try localhost instead.
Oracle compatibility: support DECODE(x, ...).
@roadmap_1374_li
MVCC: compare concurrent update behavior with PostgreSQL and Oracle.
Console: Start Browser: if ip number changed, try localhost instead.
@roadmap_1375_li
HSQLDB compatibility: CREATE FUNCTION (maybe using a Function interface).
MVCC: compare concurrent update behavior with PostgreSQL and Oracle.
@roadmap_1376_li
HSQLDB compatibility: support CALL "java.lang.Math.sqrt"(2.0)
HSQLDB compatibility: CREATE FUNCTION (maybe using a Function interface).
@roadmap_1377_li
Support comma as the decimal separator in the CSV tool.
HSQLDB compatibility: support CALL "java.lang.Math.sqrt"(2.0)
@roadmap_1378_li
Compatibility: Support jdbc:default:connection using ThreadLocal (part of SQLJ)
Support comma as the decimal separator in the CSV tool.
@roadmap_1379_li
Compatibility: Java functions with SQLJ Part1 http://www.acm.org/sigmod/record/issues/9912/standards.pdf.gz
Compatibility: Support jdbc:default:connection using ThreadLocal (part of SQLJ)
@roadmap_1380_li
Compatibility: Java functions with SQL/PSM (Persistent Stored Modules) - need to find the documentation.
Compatibility: Java functions with SQLJ Part1 http://www.acm.org/sigmod/record/issues/9912/standards.pdf.gz
@roadmap_1381_li
CACHE_SIZE: automatically use a fraction of Runtime.maxMemory - maybe automatically the second level cache.
Compatibility: Java functions with SQL/PSM (Persistent Stored Modules) - need to find the documentation.
@roadmap_1382_li
Support date/time/timestamp as documented in http://en.wikipedia.org/wiki/ISO_8601
CACHE_SIZE: automatically use a fraction of Runtime.maxMemory - maybe automatically the second level cache.
@roadmap_1383_li
PostgreSQL compatibility: when in PG mode, treat BYTEA data like PG.
Support date/time/timestamp as documented in http://en.wikipedia.org/wiki/ISO_8601
@roadmap_1384_li
Support standard MERGE statement: http://en.wikipedia.org/wiki/Merge_%28SQL%29
PostgreSQL compatibility: when in PG mode, treat BYTEA data like PG.
@roadmap_1385_li
MySQL compatibility: REPLACE http://dev.mysql.com/doc/refman/6.0/en/replace.html
#Right outer joins on tables that were already 'inner joined' was processed incorrectly.
#-
@changelog_1003_li
#Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1003_h2
#Version 1.2.125 (2009-12-06)
@changelog_1004_li
#Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
#Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
@changelog_1005_li
#When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
#The shell tool now has a very simple statement history.
@changelog_1006_li
#Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
#The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
@changelog_1007_li
#Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
#Right outer joins on tables that were already 'inner joined' was processed incorrectly.
@changelog_1008_li
#Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
#Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1009_li
#The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
#Trying to alter a temporary table threw a strange exception. It is still not possible to do that, but the exception message is better now.
@changelog_1010_li
#The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower.
#When the system property h2.maxMemoryRowsDistinct was set, and using SELECT DISTINCT, the temporary table was not correctly dropped. This could cause problems in recovery when the process was killed.
@changelog_1011_li
#Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
#Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
@changelog_1012_li
#The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
#Non-row based triggers were called even if the action didn't match the declared action (INSERT triggers were also called when deleting rows). This has been changed. The MERGE statement calls both INSERT and DELETE triggers.
@changelog_1013_li
#More bugs in the server-less multi-connection mode have been fixed.
#Statements with IN(..) conditions could produce the wrong result or a data conversion error (since version 1.2.120). Examples: index on id, name, condition: id=1 and name in('Hello', 'x'); index on id, query: select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1014_li
#When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
#The CompressTool was not multithreading safe. Because of this, the following database operations where also not multithreading safe (even when using different databases): the SCRIPT command (only when using compression), the COMPRESS function, and storing CLOB or BLOB data (only when compression is enabled).
@changelog_1015_li
#JdbcConnectionPool.getConnection() could throw a NullPointerException.
#The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
@changelog_1016_li
#User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
#Compressing large blocks of data didn't work when using the "Deflate" compression algorithm. Compressing a lot of data could run out of heap memory.
@changelog_1017_li
#User defined functions with source code didn't work after re-opening the database.
#The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
@changelog_1018_li
#The newsfeeds are now Atom 1.0 standard compliant.
#More bugs in the server-less multi-connection mode have been fixed.
@changelog_1019_li
#When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
@changelog_1020_li
#JdbcConnectionPool.getConnection() could throw a NullPointerException.
@changelog_1021_li
#User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
@changelog_1022_li
#User defined functions with source code didn't work after re-opening the database.
@changelog_1023_li
#The newsfeeds are now Atom 1.0 standard compliant.
@changelog_1024_li
#The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
@changelog_1020_h2
@changelog_1025_li
#Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
@changelog_1026_li
#Drop table did not delete lob files in old file store (not PAGE_STORE).
@changelog_1027_h2
#Version 1.2.124 (2009-11-20)
@changelog_1021_li
@changelog_1028_li
#Clustering: there is now a way to detect which cluster instances are running.
@changelog_1022_li
@changelog_1029_li
#ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
@changelog_1023_li
@changelog_1030_li
#The file lock thread is now stopped when the database is closed.
@changelog_1024_li
@changelog_1031_li
#Issue 140: the Script tool now supports writing to a stream.
@changelog_1025_li
@changelog_1032_li
#Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
@changelog_1026_li
@changelog_1033_li
#Page store: new databases can not be opened with older versions.
@changelog_1027_li
@changelog_1034_li
#Page store: multi-column indexes didn't work if the cache was very small.
@changelog_1028_li
@changelog_1035_li
#Page store: opening a database could theoretically result in an endless loop.
@changelog_1029_li
@changelog_1036_li
#Page store: adding large indexed columns could get very slow.
@changelog_1030_li
@changelog_1037_li
#Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
@changelog_1031_li
@changelog_1038_li
#Page store: the recover tool sometimes generated a script file that contained duplicate data.
@changelog_1032_li
@changelog_1039_li
#Page store: sometimes opening a read-only database failed.
@changelog_1033_li
@changelog_1040_li
#Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
@changelog_1034_li
@changelog_1041_li
#Page store: when using a very small page size (128 bytes or smaller), writing a large row could result in an endless recursion. This is only a theoretical problem, as the page size is 2 KB.
@changelog_1035_li
@changelog_1042_li
#Page store: getting the min value from a descending index with NULL entries could return the wrong result.
@changelog_1036_li
@changelog_1043_li
#Page store: improved auto-recovery after power failure.
@changelog_1037_li
@changelog_1044_li
#The JDBC client did not detect that it was not talking to an H2 server. This could result in strange exceptions when trying to connect to another kind of server.
@changelog_1038_li
@changelog_1045_li
#User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
@changelog_1039_li
#Database file lock: the exception "lock file modified in the future" is longer thrown; instead, opening the file will be delayed by 2 seconds.
@changelog_1046_li
#Database file lock: the exception "lock file modified in the future" is no longer thrown; instead, opening the file will be delayed by 2 seconds.
@changelog_1040_li
@changelog_1047_li
#Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
@changelog_1041_li
@changelog_1048_li
#Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
@changelog_1042_li
@changelog_1049_li
#Improved read-only database detection.
@changelog_1043_h2
@changelog_1050_h2
#Version 1.2.123 (2009-11-08)
@changelog_1044_li
@changelog_1051_li
#Page store: new databases can not be opened with older versions.
@changelog_1045_li
@changelog_1052_li
#Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
@changelog_1046_li
@changelog_1053_li
#Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
@changelog_1047_li
@changelog_1054_li
#When using multi-threaded kernel mode, setting disabling locking (LOCK_MODE=0) will now throw an exception. At this time this combination will result in corruption when multiple threads try to update the same table.
@changelog_1048_li
@changelog_1055_li
#The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
@changelog_1049_li
@changelog_1056_li
#The Lucene fulltext search now also returns the score.
@changelog_1050_li
@changelog_1057_li
# New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
@changelog_1051_li
@changelog_1058_li
#Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
@changelog_1052_li
@changelog_1059_li
#Improved error messages: identifiers and values are now quoted.
@changelog_1053_li
@changelog_1060_li
#Improved error message when casting a value failed: the column name and type is included in the message.
@changelog_1054_li
@changelog_1061_li
#Improved support for GAE for Java thanks to Vince Bonfanti.
@changelog_1055_h2
@changelog_1062_h2
#Version 1.2.122 (2009-10-28)
@changelog_1056_li
@changelog_1063_li
#The native fulltext search now supports streaming CLOB data.
@changelog_1057_li
@changelog_1064_li
#If the database URL ends with ;PAGE_STORE=TRUE and a database in the old format exists, it is automatically converted to the new page store format if possible. A backup of the database is created first. Automatic conversion is not supported if the database was not closed normally (if it contains uncommitted transactions).
@changelog_1058_li
@changelog_1065_li
#Dropping the current user is now allowed if another admin user exists.
@changelog_1059_li
@changelog_1066_li
#Values of type BINARY or BLOB could not be converted to the data type OTHER.
@changelog_1060_li
@changelog_1067_li
#SHUTDOWN COMPACT now fully compacts the database.
@changelog_1061_li
@changelog_1068_li
#New system properties h2.maxCompactCount and h2.maxCompactTime to allow changing the default behavior (at most 2 seconds compacting when closing the database).
@changelog_1062_li
@changelog_1069_li
#New sorted insert optimization (see Performance / Database Performance Tuning).
@changelog_1063_li
@changelog_1070_li
#Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
@changelog_1064_li
@changelog_1071_li
#Page store: opening a large database was slow if it was not closed before.
@changelog_1065_li
@changelog_1072_li
#Page store: new write and read counters in the meta data table. Use SELECT * FROM INFORMATION_SCHEMA.SETTINGS WHERE NAME IN( 'info.FILE_WRITE_TOTAL', 'info.FILE_WRITE', 'info.FILE_READ', 'info.CACHE_MAX_SIZE', 'info.CACHE_SIZE')
@changelog_1066_li
@changelog_1073_li
#The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
@changelog_1067_li
@changelog_1074_li
#The documentation is no longer available in Japanese because the translation was too much out of sync. Please use the Google translation instead.
@changelog_1068_li
@changelog_1075_li
#Certain queries were not sorted if subselect queries were involved
@changelog_1069_li
@changelog_1076_li
#More bugs in the server-less multi-connection mode have been fixed: 90097 The database is read only, caches must be cleared on reconnect, etc.
@changelog_1070_h2
@changelog_1077_h2
#Version 1.2.121 (2009-10-11)
@changelog_1071_li
@changelog_1078_li
#Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
@changelog_1072_li
@changelog_1079_li
#CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
@changelog_1073_li
@changelog_1080_li
#If a database in the old format exists, it is now used. The system property is used for new databases, or if databases exist in both formats. In any case, the flag in the URL overrides this logic.
@changelog_1074_li
@changelog_1081_li
#Page store bugs were fixed. Large values in indexed columns could corrupt the index.
@changelog_1075_li
@changelog_1082_li
#The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
@changelog_1076_li
@changelog_1083_li
#New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
@changelog_1077_h2
@changelog_1084_h2
#Version 1.2.120 (2009-10-04)
@changelog_1078_li
@changelog_1085_li
#This is a beta version.
@changelog_1079_li
@changelog_1086_li
#Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
@changelog_1080_li
@changelog_1087_li
#In version 1.2, the following system properties are now enabled by default: h2.pageStore, h2.nullConcatIsNull, h2.optimizeInList. The default value for h2.defaultMaxLengthInplaceLob is now 4096 (it was 1024 with version 1.1).
@changelog_1081_li
@changelog_1088_li
#New databases are now stored in the new 'page store' file format. Existing databases are kept in the old file format. To use the old file format, append ;PAGE_STORE=FALSE to the database URL or set the system property h2.pageStore to false.
@changelog_1082_li
@changelog_1089_li
#Issue 125: Renaming primary keys was not persistent. Fixed. Unfortunately, databases created by this version can not be opened with older versions because of this change.
@changelog_1083_li
@changelog_1090_li
#Issue 124: Hibernate schema validation failed for decimal/numeric columns. This problem is fixed in the Hibernate dialect that is included with H2 (src/tools/org/hibernate/dialect/H2Dialect.java.txt), but not in Hibernate yet.
@changelog_1084_li
@changelog_1091_li
#PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
@changelog_1085_li
@changelog_1092_li
#Linked tables now support default values when inserting, updating or merging.
@changelog_1086_li
@changelog_1093_li
#Bugfixes in the page store.
@changelog_1087_li
@changelog_1094_li
#Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
@changelog_1088_li
@changelog_1095_li
#Allow writing to linked tables in readonly databases.
@changelog_1089_h2
@changelog_1096_h2
#Version 1.1.119 (2009-09-26)
@changelog_1090_li
@changelog_1097_li
#SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1091_li
@changelog_1098_li
#Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
@changelog_1092_li
@changelog_1099_li
#New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
@changelog_1093_li
@changelog_1100_li
#New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
@changelog_1094_li
@changelog_1101_li
#The cache algorithm TQ is disabled in this version, because it is unstable, and because the current implementation does not have any measurable advantages over the default.
@changelog_1095_li
@changelog_1102_li
#New committer: Christian Peter. He works for <a href="http://www.docware.com">Docware</a> and helped a lot finding and fixing bugs, and generally improving the database. He is now a committer.
@changelog_1096_li
@changelog_1103_li
#ChangeFileEncryption did not work with Lob subdirectories. Fixed.
@changelog_1097_li
@changelog_1104_li
#Issue 121: JaQu: new simple update and merge methods.
@changelog_1098_li
@changelog_1105_li
#Issue 120: JaQu didn't close result sets.
@changelog_1099_li
@changelog_1106_li
#Issue 119: JaQu creates wrong WHERE conditions on some inputs.
@changelog_1100_li
@changelog_1107_li
#The new page store mechanism is now alpha-level quality. The next release will most likely be "1.2.120 beta" where this mode is enabled by default. To use it right now, append ;PAGE_STORE=TRUE to the database URL. The file format of this mode will probably not change any more.
@changelog_1101_li
@changelog_1108_li
#SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
@changelog_1102_li
@changelog_1109_li
#The Recover tool now also processes the log files, however applying those changes is still a manual process.
@changelog_1103_li
@changelog_1110_li
#New sample application that shows how to pass data to a trigger.
@changelog_1104_li
@changelog_1111_li
#More bugs in the server-less multi-connection mode have been fixed: On Windows, two processes could write to the same database at the same time.
@changelog_1105_li
@changelog_1112_li
#When loading triggers or other client classes (static functions, database event listener, user aggregate functions, other JDBC drivers), the database now uses the context class loader if the class could not be found using Class.forName().
@changelog_1106_li
@changelog_1113_li
#Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
@changelog_1107_li
@changelog_1114_li
#Statement.getConnection() threw an exception if the connection was already closed.
@changelog_1108_li
@changelog_1115_li
#The native fulltext index kept a reference to a database after the database was closed.
@changelog_1109_li
@changelog_1116_li
#Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1110_li
@changelog_1117_li
#The optimizer does a better job for joins if indexes are missing.
@changelog_1111_h2
@changelog_1118_h2
#Version 1.1.118 (2009-09-04)
@changelog_1112_li
@changelog_1119_li
#SHOW COLUMNS only listed indexed columns.
@changelog_1113_li
@changelog_1120_li
#When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
@changelog_1114_li
@changelog_1121_li
#DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
@changelog_1115_li
@changelog_1122_li
#AUTO_INCREMENT now works in the same way in ALTER TABLE ALTER COLUMN as in CREATE TABLE (it does not create a primary key).
@changelog_1116_li
@changelog_1123_li
#Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
@changelog_1117_li
@changelog_1124_li
#Better support GaeVFS (Google App Engine Virtual File System).
@changelog_1118_li
@changelog_1125_li
#JaQu: the plan is to support natural (pure Java / Scala) conditions such as (id == 1 && name.equals("Test")). A proof of concept decompiler is now included (it doesn't work yet).
@changelog_1119_li
@changelog_1126_li
#Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1120_li
@changelog_1127_li
#PreparedStatement.setObject now converts a java.lang.Character to a string.
@changelog_1121_li
@changelog_1128_li
#H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
@changelog_1122_li
@changelog_1129_li
#Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
@changelog_1123_li
@changelog_1130_li
#H2 Console: indexes of tables of non-default schemas are now also listed.
@changelog_1124_li
@changelog_1131_li
#Issue 111: Multi-version concurrency / duplicate primary key after rollback.
@changelog_1125_li
@changelog_1132_li
#Issue 110: Multi-version concurrency / wrong exception is thrown.
@changelog_1126_li
@changelog_1133_li
#Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
@changelog_1127_li
@changelog_1134_li
#Issue 101: The following sequence could throw the exception "Row not found when trying to delete": start a transaction, insert many rows, delete many rows, rollback. The number of rows depends on the cache size.
@changelog_1128_li
@changelog_1135_li
#The stack trace of very common exceptions is no longer written to the .trace.db file by default.
@changelog_1129_li
@changelog_1136_li
#An optimization for OR is implemented, but disabled by default. Expressions of the type X=1 OR X=2 are converted to X IN(1, 2). To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver.
@changelog_1130_li
@changelog_1137_li
#An optimization for IN(..) and IN(SELECT...) is implemented, but disabled by default. To enable, set the system property h2.optimizeInList to true before loading the H2 JDBC driver. If enabled, this overrides h2.optimizeIn and h2.optimizeInJoin. Unlike now, this optimization will also speed up updates and deletes.
@changelog_1131_h2
@changelog_1138_h2
#Version 1.1.117 (2009-08-09)
@changelog_1132_li
@changelog_1139_li
#New committer: Sam Van Oort has been contributing to H2 since quite some time in many ways (on the mailing list, documentation, and in the form of patches). He is now a committer.
@changelog_1133_li
@changelog_1140_li
#JaQu: the order of the fields in the database no longer needs to match the order in the database.
@changelog_1134_li
@changelog_1141_li
#Issue 103: MVCC: the setting MAX_MEMORY_UNDO can currently not be supported when using multi-version concurrency, that means the complete undo log must fit in memory.
@changelog_1135_li
@changelog_1142_li
#LIKE: the escape mechanism can now be disable using ESCAPE ''. The default escape character can be changed using the system property h2.defaultEscape. The default is still '\' (as in MySQL and PostgreSQL).
@changelog_1136_li
@changelog_1143_li
#Views using functions were not re-evaluated when necessary.
@changelog_1137_li
@changelog_1144_li
#Improved MySQL compatibility for SHOW COLUMNS.
@changelog_1138_li
@changelog_1145_li
#Improved PostgreSQL compatibility for timestamp literals with timezone.
@changelog_1139_li
@changelog_1146_li
#Sergi Vladykin translated the error messages to Russian. Thanks a lot!
@changelog_1140_li
@changelog_1147_li
#Support for Java 6 DatabaseMetaData.getTables, getColumns, getProcedures, and getProcedureColumns.
@changelog_1141_li
@changelog_1148_li
#Issue 101: Rollback of a large transaction (more than 100000 rows) could fail.
@changelog_1142_li
@changelog_1149_li
#Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1143_li
@changelog_1150_li
#The functions LENGTH, OCTET_LENGTH, and BIT_LENGTH now return BIGINT.
@changelog_1144_li
@changelog_1151_li
#Data types CLOB and BLOB: the maximum precision was Integer.MAX_VALUE, it is now Long.MAX_VALUE.
@changelog_1145_li
@changelog_1152_li
#Multi-threaded kernel: creating and dropping temporary database objects and the potentially free pages list was not correctly synchronized. Thanks a lot to Eric Faulhaber for the test case and patch!
@changelog_1146_li
@changelog_1153_li
#Parsing SQL script files is now faster.
@changelog_1147_li
@changelog_1154_li
#CSV reading is now faster.
@changelog_1148_li
@changelog_1155_li
#SimpleResultSet.newInstance(SimpleRowSource rs) did not work.
@changelog_1149_h2
@changelog_1156_h2
#Version 1.1.116 (2009-07-18)
@changelog_1150_li
@changelog_1157_li
#Server-less multi-connection mode: more bugs are fixed.
@changelog_1151_li
@changelog_1158_li
#The built-in help (INFORMATION_SCHEMA.HELP) is smaller, shrinking the jar file size a bit.
@changelog_1152_li
@changelog_1159_li
#H2 Console: column of tables of non-default schemas are now also listed, except for schemas starting with 'INFO'.
@changelog_1153_li
@changelog_1160_li
#ALTER TABLE: removing an auto-increment or identity column didn't remove the sequence.
@changelog_1154_li
@changelog_1161_li
#Creating indexes is now a bit faster.
@changelog_1155_li
@changelog_1162_li
#PG Server: new system property h2.pgClientEncoding to explicitly set the encoding for clients that don't send the encoding (the default encoding is UTF-8). Thanks a lot to Sergi Vladykin for the patch!
@changelog_1156_li
@changelog_1163_li
#PG Server: improved compatibility by using the type ids of the PostgreSQL driver. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1157_li
@changelog_1164_li
#H2 Console: Oracle system tables are no longer listed, improving performance.
@changelog_1158_li
@changelog_1165_li
#Result sets are now read-only except if the statement or prepared statement was created with the concurrency ResultSet.CONCUR_UPDATABLE. This change is required because the old behavior (all result set are updatable) violated the JDBC spec. For backward compatibility, use the system property h2.defaultResultSetConcurrency.
@changelog_1159_li
@changelog_1166_li
#New system property h2.defaultResultSetConcurrency to change the default result set concurrency.
@changelog_1160_li
@changelog_1167_li
#JDBC: using an invalid result set type or concurrency now throws an exception.
@changelog_1161_li
@changelog_1168_li
#If a pooled connection was not closed but garbage collected, a NullPointerException could occur.
@changelog_1162_li
@changelog_1169_li
#Fulltext search: a NullPointerException was thrown when updating a value that was NULL previously.
@changelog_1163_li
@changelog_1170_li
#The Recover tool did not work with .data.db files of the wrong size.
@changelog_1164_li
@changelog_1171_li
#Triggers: if there was an exception when initializing a trigger, this exception could be hidden, and in some cases (specially when using the Lucene fulltext index mechanism) a NullPointerException was thrown later on. Now the exception that occurred on init is thrown when changing data.
@changelog_1165_li
@changelog_1172_li
#The soft-references cache (CACHE_TYPE=SOFT_LRU) could throw a NullPointerException.
@changelog_1166_li
@changelog_1173_li
#To enable the new page store mechanism, append ;PAGE_STORE=TRUE to the database URL. or set the system property h2.pageStore to true. This mechanism is still experimental, and the file format will change, but it is quite stable now.
@changelog_1167_h2
@changelog_1174_h2
#Version 1.1.115 (2009-06-21)
@changelog_1168_li
@changelog_1175_li
#The new storage mechanism is now alpha quality. To try it out, set the system property "h2.pageStore" to "true" (java -Dh2.pageStore=true). There are still bugs to be found and fixed, for example inserting many rows references a lot of main memory. Performance is currently about the same as with the regular storage mechanism, but the database file size is smaller. The file format is not stable yet.
@changelog_1169_li
@changelog_1176_li
#ALTER TABLE could throw an exception "object already exists" in some cases.
@changelog_1170_li
@changelog_1177_li
#Views: in some situations, an ArrayIndexOutOfBoundsException was thrown when using the same view concurrently.
@changelog_1171_li
@changelog_1178_li
#java.util.UUID is now supported in PreparedStatement.setObject and user defined Java functions. ResultSet.getObject() returns a java.util.UUID when using the UUID data type.
@changelog_1172_li
@changelog_1179_li
#H2 Console: the language was reset to the browser language when disconnecting.
@changelog_1173_li
@changelog_1180_li
#H2 Console: improved Polish translation.
@changelog_1174_li
@changelog_1181_li
#Server-less multi-connection mode: more bugs are fixed.
@changelog_1175_li
@changelog_1182_li
#The download page now included the SHA1 checksums.
@changelog_1176_li
@changelog_1183_li
#Shell tool: the file encoding workaround is now documented if you run java org.h2.tools.Shell -?.
@changelog_1177_li
@changelog_1184_li
#The RunScript tool and SQL statement did not work with the compression method LZF.
@changelog_1178_li
@changelog_1185_li
#Fulltext search: searching for NULL or an empty string threw an exception.
@changelog_1179_li
@changelog_1186_li
#Lucene fulltext search: FTL_DROP_ALL did not drop the triggers.
@changelog_1180_li
@changelog_1187_li
#Backup: if the database contained CLOB or BLOB data, the backup included a file entry for the LOB directory. This caused the restore to fail.
@changelog_1181_li
@changelog_1188_li
#Data types: LONG is now an alias for BIGINT.
@changelog_1182_h2
@changelog_1189_h2
#Version 1.1.114 (2009-06-01)
@changelog_1183_li
@changelog_1190_li
#ResultSetMetaData.getColumnClassName returned the wrong class for CLOB and BLOB columns.
@changelog_1184_li
@changelog_1191_li
#Fulltext search: data is no longer deleted and re-inserted if the indexed columns didn't change.
@changelog_1185_li
@changelog_1192_li
#In some situations, an ArrayIndexOutOfBoundsException was thrown when adding rows. This was caused by a bug in the b-tree code.
@changelog_1186_li
@changelog_1193_li
#Microsoft Windows Vista: when using the the installer, Vista wrote "This program may not have installed correctly." This message should no longer appear (in the h2.nsi file, the line 'RequestExecutionLevel highest' was added).
@changelog_1187_li
@changelog_1194_li
#The Recover tool did not always work when the database contains referential integrity constraints.
@changelog_1188_li
@changelog_1195_li
#Java 1.5 is now required to run H2. If required, Retrotranslator can be used to create a Java 1.4 version (http://retrotranslator.sourceforge.net/).
@changelog_1189_h2
@changelog_1196_h2
#Version 1.1.113 (2009-05-21)
@changelog_1190_li
@changelog_1197_li
#Shell tool: the built-in commands EXIT, HELP, ?, LIST, and so on didn't work with a semicolon at the end.
@changelog_1191_li
@changelog_1198_li
#JDK 1.5 is now required to build the jar file. However it is still possible to create a jar file for Java 1.4. For details, see buildRelease.sh and buildRelease.bat. As an alternative, compile using JDK 1.5 or 1.6 and use Retrotranslator to create a Java 1.4 version (http://retrotranslator.sourceforge.net/).
@changelog_1192_li
@changelog_1199_li
#When deleting or updating many rows in a table, the space in the index file was not re-used in the default mode (persistent database, b-tree index, LOG=1). This caused the index file to grow over time. Workarounds were to delete and re-created the index file, alter the table (add a remove a column), or append ;LOG=2 to the database URL. To disable the change, set the system property h2.reuseSpaceBtreeIndex to false.
@changelog_1193_li
@changelog_1200_li
#Identifiers with a digit and then a dollar sign didn't work. Example: A1$B.
@changelog_1194_li
@changelog_1201_li
#MS SQL Server compatibility: support for linked tables with NVARCHAR, NCHAR, NCLOB, and LONGNVARCHAR.
@changelog_1195_li
@changelog_1202_li
#Android: workaround for a problem when using read-only databases in zip files (skip seems to be implemented incorrectly on the Android system).
@changelog_1196_li
@changelog_1203_li
#Calling execute() or prepareStatement() with null as the SQL statement now throws an exception.
@changelog_1197_li
@changelog_1204_li
#Benchmark: the number of executed statements was incorrect. The H2 database was loaded at the beginning of the test to collect results, now it is loaded at the very end. Thanks to Fred Toussi from HSQLDB for reporting those problems. However the changed do not affect the relative performance.
@changelog_1198_li
@changelog_1205_li
#H2 Console: command line settings are no longer stored in the properties file. They are now only used for the current process, except if they are explicitly saved.
@changelog_1199_li
@changelog_1206_li
#Cache: support for a second level soft-references cache. To enable it, append ;CACHE_TYPE=SOFT_LRU (or SOFT_TQ) to the database URL, or set the system property h2.cacheTypeDefault to "SOFT_LRU" / "SOFT_TQ". Enabling the second level cache reduces performance for small databases, but speeds up large databases. It makes sense to use it if the available memory size is unknown. Thanks a lot to Jan Kotek!
@changelog_1200_h2
@changelog_1207_h2
#Version 1.1.112 (2009-05-01)
@changelog_1201_li
@changelog_1208_li
#JdbcPreparedStatement.toString() could throw a NullPointerException.
#Connection pool: the default login timeout is now 5 minutes.
@changelog_1204_li
@changelog_1211_li
#After truncating tables, opening large databases could become slow because indexes were always re-built unnecessarily when opening.
@changelog_1205_li
@changelog_1212_li
#More bugs in the server-less multi-connection mode have been fixed: Sometimes parameters of prepared statements were lost when a reconnecting. Concurrent read operations were slow. To improve performance, executeQuery(..) must be used for queries (execute(..) switches to the write mode, which is slow).
@changelog_1206_li
@changelog_1213_li
#GROUP BY queries with a self-join (join to the same table) that were grouped by columns with indexes returned the wrong result in some cases.
@changelog_1207_li
@changelog_1214_li
#Improved error message when the .lock.db file modification time is in the future.
@changelog_1208_li
@changelog_1215_li
#The MERGE statement now returns 0 as the generated key if the row was updated.
@changelog_1209_li
@changelog_1216_li
#Running code coverage is now automated.
@changelog_1210_li
@changelog_1217_li
#A file system implementation can now be registered using FileSystem.register.
@changelog_1211_li
@changelog_1218_li
#The database file system is no longer included in the jar file, it moved to the test section.
@changelog_1212_h2
@changelog_1219_h2
#Version 1.1.111 (2009-04-10)
@changelog_1213_li
@changelog_1220_li
#In-memory databases can now run inside the Google App Engine.
@changelog_1214_li
@changelog_1221_li
#Queries that are ordered by an indexed column returned no rows in certain cases (if all rows were deleted from the table previously, and there is a low number of rows in the table, and when not using other conditions, and when using the default b tree index).
@changelog_1215_li
@changelog_1222_li
#The wrong exception was thrown when using unquoted text for the SQL statements COMMENT, ALTER USER, and SET PASSWORD.
@changelog_1216_li
@changelog_1223_li
#The built-in connection pool did not roll back transactions and enable autocommit enabled after closing a connection.
@changelog_1217_li
@changelog_1224_li
#Sometimes a StackOverflow occurred when checking for deadlock. See also http://code.google.com/p/h2database/issues/detail?id=61
@changelog_1218_li
@changelog_1225_li
#The Shell tool no longer truncates results with only one column, and displays a message if data was truncated.
@changelog_1219_h2
@changelog_1226_h2
#Version 1.1.110 (2009-04-03)
@changelog_1220_li
@changelog_1227_li
#Support for not persistent in-memory tables in regular (persistent) databases using CREATE MEMORY TABLE(..) NOT PERSISTENT. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1221_li
@changelog_1228_li
#The H2 Console trimmed the password (removed leading and trailing spaces). This is no longer the case, to support encrypted H2 database with an empty user password.
@changelog_1222_li
@changelog_1229_li
#The data type of a SUBSTRING method was wrong.
@changelog_1223_li
@changelog_1230_li
#ResultSet.findColumn and get methods with column label parameters now also check for matching column names (like most databases except MySQL).
@changelog_1224_li
@changelog_1231_li
#H2 Console: the browser system property now supports a list of arguments. Example: java -Dh2.browser="open,-a,Safari,%url" ...
@changelog_1225_li
@changelog_1232_li
#Improved Javadoc navigation (similar to Scaladoc).
@changelog_1226_li
@changelog_1233_li
#H2 Console: auto-complete of identifiers did not work correctly for H2 databases in MySQL mode.
@changelog_1227_li
@changelog_1234_li
#DISTINCT and GROUP BY on a CLOB column was broken.
@changelog_1228_li
@changelog_1235_li
#The FTP server moved to the tools section and is no longer included in the h2*.jar file.
@changelog_1229_li
@changelog_1236_li
#Improved error message for unsupported features: now the message says what exactly is not supported.
@changelog_1230_li
@changelog_1237_li
#Improved OSGi support.
@changelog_1231_li
@changelog_1238_li
#Some internal caches did not use the LRU mechanism. Fixed (LOB file list, optimizer cost cache, trace system, view indexes, collection keys, compressed in-memory file system).
@changelog_1232_li
@changelog_1239_li
#The API of the tools changed a bit (each tool now returns an exit code).
@changelog_1233_li
@changelog_1240_li
#Command line help of the tools now match the javadocs. The build converts the javadocs to a resource that is read by the tool at runtime. This should not have an effect on using the database, but it reduces duplicate and out-of-sync documentation.
@changelog_1234_li
@changelog_1241_li
#CREATE TABLE: improved compatibility (support for UNIQUE NOT NULL).
@changelog_1235_li
@changelog_1242_li
#DatabaseMetaData.getSQLKeywords now returns the correct list.
@changelog_1236_li
@changelog_1243_li
#Deterministic user defined functions did not work when the parameter was a column. Fixed.
@changelog_1237_li
@changelog_1244_li
#JdbcConnectionPool.setLoginTimeout with 0 now uses the default timeout.
@changelog_1238_li
@changelog_1245_li
#Creating a JdbcConnectionPool has been simplified a bit.
@changelog_1239_li
@changelog_1246_li
#The built-in connection pool did not re-use connections. Getting a connection using the built-in JdbcConnectionPool is now about 70 times faster than opening connections using DriverManager.getConnection.
@changelog_1240_li
@changelog_1247_li
#More bugs in the server-less multi-connection mode have been fixed: If a process terminated while writing, other open connections were blocked. If two processes were writing to the database, sometimes the database was corrupt after closing.
@changelog_1241_li
@changelog_1248_li
#Linked tables to SQLite database can now be created.
@changelog_1242_li
@changelog_1249_li
#Nested IN(IN(...)) didn't work.
@changelog_1243_li
@changelog_1250_li
#NIO storage: the nio: prefix was using memory mapped files instead of FileChannel.
@changelog_1244_h2
@changelog_1251_h2
#Version 1.1.109 (2009-03-14)
@changelog_1245_li
@changelog_1252_li
#The optimization for IN(...) is now only used if comparing a column with an index.
@changelog_1246_li
@changelog_1253_li
#User defined functions can now be deterministic (see CREATE ALIAS documentation).
@changelog_1247_li
@changelog_1254_li
#Multiple nested queries in the FROM clause with parameters did not always work.
@changelog_1248_li
@changelog_1255_li
#When converting CLOB to BINARY, each character resulted in one byte. Now, the text is parsed as a hex as when converting VARCHAR.
@changelog_1249_li
@changelog_1256_li
#New experimental NIO storage mechanism with both FileChannel and memory mapped files. To use it, use the file name prefix nio: or nioMapped: as in jdbc:h2:nio:~/test. So far it looks like NIO storage is faster on Mac OS but slower on some Windows systems. Thanks a lot to Jan Kotek for the patch!
@changelog_1250_li
@changelog_1257_li
#The functions BITOR, BITAND, BITXOR, and MOD now accept and return BIGINT instead of INT.
@changelog_1251_li
@changelog_1258_li
#Could not use the same linked table multiple times in the same query.
@changelog_1252_li
@changelog_1259_li
#Bugs in the server-less multi-connection mode have been fixed.
@changelog_1253_li
@changelog_1260_li
#Column names could not be named "UNIQUE" (with the quotes).
@changelog_1254_li
@changelog_1261_li
#New system function TRANSACTION_ID() to get the current transaction identifier for a session.
@changelog_1255_h2
@changelog_1262_h2
#Version 1.1.108 (2009-02-28)
@changelog_1256_li
@changelog_1263_li
#When the shutdown hook closed the database, the last log file was deleted too early. This could cause uncommitted changes to be persisted. In some cases, this could cause data corruption.
@changelog_1257_li
@changelog_1264_li
#JdbcConnectionPool: it was possible to set a negative connection pool size.
@changelog_1258_li
@changelog_1265_li
#Fulltext search did not support table names with a backslash.
@changelog_1259_li
@changelog_1266_li
#The internal IntArray class did not work correctly when initialized with a zero length array.
@changelog_1260_li
@changelog_1267_li
#The H2 Console web application (war file) did only support ASCII characters. Now UTF-8 is supported.
@changelog_1261_li
@changelog_1268_li
#DATEADD does no longer require that the argument is a timestamp.
@changelog_1262_li
@changelog_1269_li
#The database file locking mechanism didn't work correctly on Mac OS.
@changelog_1263_li
@changelog_1270_li
#Some built-in functions reported the wrong precision, scale, and display size.
@changelog_1264_li
@changelog_1271_li
#MySQL compatibility for CREATE TABLE is improved (UNSIGNED, KEY).
@changelog_1265_li
@changelog_1272_li
#Recovery did not work if there were more than 255 lobs stored as files.
@changelog_1266_li
@changelog_1273_li
#New experimental mode to support multiple read-write connections without starting a server. To enable this mode, append ;FILE_LOCK=SERIALIZED;OPEN_NEW=TRUE to the database URL. Don't expect high performance when multiple concurrent writers.
@changelog_1267_li
@changelog_1274_li
#In a web application, the database classes are not unloaded if a connection is open. This may cause out of memory when re-deploying a web application. The DbStarter is changed to close all connections to the configured database (by executing SHUTDOWN).
@changelog_1268_li
@changelog_1275_li
#The WebServlet did not close the database when un-deploying the web application.
@changelog_1269_li
@changelog_1276_li
#The exception message of failed INSERT or MERGE statements now includes all values and the row number.
@changelog_1270_li
@changelog_1277_li
#If opening a database failed with an out of memory exception, some files were not closed.
@changelog_1271_li
@changelog_1278_li
#Optimizer: the expected runtime calculation was incorrect. The fixed calculation should give slightly better query plans when using many joins.
@changelog_1272_li
@changelog_1279_li
#Improved exception message when connecting to a just started server fails.
@changelog_1273_li
@changelog_1280_li
#Connection.isValid is a bit faster.
@changelog_1274_li
@changelog_1281_li
#H2 Console: the autocomplete feature has been improved a bit. It can now better parse conditions.
@changelog_1275_li
@changelog_1282_li
#When restarting a web application in Tomcat, an exception was thrown sometimes. In most cases this was a NullPointerException. A workaround in H2 has been implemented. The root cause of the problem is now documented in the FAQ: Tomcat sets all static fields (final or non-final) to null when unloading a web application. A workaround is to put the h2.jar in the lib directory, or set the system property org.apache.catalina.loader.WebappClassLoader.ENABLE_CLEAR_REFERENCES to false.
@changelog_1276_h2
@changelog_1283_h2
#Version 1.1.107 (2009-01-24)
@changelog_1277_li
@changelog_1284_li
#Some DatabaseMetaData operations did not work for non-admin users for versions 1.1.x.
@changelog_1278_li
@changelog_1285_li
#The MySQL compatibility extension fromUnixTime now used the English locale.
@changelog_1279_li
@changelog_1286_li
#When using LOG=2 and repeatedly updating the last row rows of a table, the index file grew quickly.
@changelog_1280_li
@changelog_1287_li
#In versions 1.1.105 and 1.1.106, encrypted script files of earlier versions could not be processed. This is now again possible. The problem was that such script files were stored in a special format (STORAGE=TEXT) but support for this format was removed in version 1.1.105.
@changelog_1281_li
@changelog_1288_li
#Enabling the trace mechanism by creating a specially named file is no longer supported.
@changelog_1282_h2
@changelog_1289_h2
#Version 1.1.106 (2009-01-04)
@changelog_1283_li
@changelog_1290_li
#Statement.setQueryTimeout did not work correctly for some statements.
@changelog_1284_li
@changelog_1291_li
#CREATE DOMAIN: built-in data types can now only be changed if no tables exist.
@changelog_1285_li
@changelog_1292_li
#Linked tables: a workaround for Oracle DATE columns has been implemented.
@changelog_1286_li
@changelog_1293_li
#DatabaseMetaData.getPrimaryKeys: the column PK_NAME now contains the constraint name instead of the index name (compatibility for PostgreSQL and Derby).
@changelog_1287_li
@changelog_1294_li
#Using IN(..) inside a IN(SELECT..) did not always work.
@changelog_1288_li
@changelog_1295_li
#Views with IN(..) that used a view itself did not work.
@changelog_1289_li
@changelog_1296_li
#Union queries with LIMIT or ORDER BY that are used in a view or subquery did not work.
@changelog_1290_li
@changelog_1297_li
#The license change a bit: so far the license was modified to say 'Swiss law'. This is now changed back to the original 'US law'. This was requested by a user, and I don't see a problem.
@changelog_1291_li
@changelog_1298_li
#Constraints for local temporary tables now session scoped. So far they were global. Thanks a lot to Eric Faulhaber for finding and fixing this problem!
@changelog_1292_li
@changelog_1299_li
#When using the auto-server mode, and if the lock file was modified in the future, the wrong exception was thrown ('Connection is broken' instead of 'Error opening database: lock file modified in the future').
@changelog_1293_h2
@changelog_1300_h2
#Version 1.1.105 (2008-12-19)
@changelog_1294_li
@changelog_1301_li
#The setting STORAGE=TEXT is no longer supported.
@changelog_1295_li
@changelog_1302_li
#Deleting a database using the tool DeleteDbFiles deleted LOB files of other databases in the same directory.
@changelog_1296_li
@changelog_1303_li
#When used in a subquery, LIKE and IN(..) did not work correctly sometimes.
@changelog_1297_li
@changelog_1304_li
#The fulltext search documentation has been improved.
@changelog_1298_li
@changelog_1305_li
#ARRAY_GET returned the wrong data type (ARRAY). Now it returns VARCHAR.
@changelog_1299_li
@changelog_1306_li
#Natural join: the joined columns are not repeated any more when using SELECT *.
@changelog_1300_li
@changelog_1307_li
#User defined aggregate functions: the method getType expected internal data types instead of SQL types.
@changelog_1301_li
@changelog_1308_li
#User defined aggregate functions did not work if there was no group by expression.
@changelog_1302_li
@changelog_1309_li
#MySQL compatibility: support for := assignment as in @sum:=@sum+x
@changelog_1303_li
@changelog_1310_li
#INSERT INTO TEST(SELECT * FROM TEST) is now supported.
@changelog_1304_li
@changelog_1311_li
#Each session threw an invisible exception when garbage collected.
@changelog_1305_li
@changelog_1312_li
#Foreign key constraints that refer to a quoted column did not work.
@changelog_1306_li
@changelog_1313_li
#New meta data column INFORMATION_SCHEMA.TABLES.LAST_MODIFICATION to get the table modification counter.
@changelog_1307_li
@changelog_1314_li
#Shell: line comments didn't work correctly.
@changelog_1308_li
@changelog_1315_li
#H2 Console: columns are now listed for up to 500 tables instead of 100.
@changelog_1309_li
@changelog_1316_li
#H2 Console: Cmd+Enter executes the current statement, Alt+Space for autocomplete.
@changelog_1310_li
@changelog_1317_li
#JaQu: the maximum length of a column can now be defined using maxLength. For an example, see Product.java (maxLength(category, 255)).
@changelog_1311_li
@changelog_1318_li
#Rıdvan Ağar has completed the Turkish translation of the H2 Console. Thanks a lot!
@changelog_1312_h2
@changelog_1319_h2
#Version 1.1.104 (2008-11-28)
@changelog_1313_li
@changelog_1320_li
#If a query that was used like a table contained group by and was ordered by an expression that is not in the column list, an exception was thrown.
@changelog_1314_li
@changelog_1321_li
#JaQu: tables are now auto-created when running a query.
@changelog_1315_li
@changelog_1322_li
#The optimizer had problems with function tables (for example CSVREAD and FTL_SEARCH). A new system property h2.estimatedFunctionTableRows (default 1000) defines how many rows can be expected in the table.
@changelog_1316_li
@changelog_1323_li
#The function SUM could overflow when using large values. It returns now a data type that is safe.
@changelog_1317_li
@changelog_1324_li
#The function AVG could overflow when using large values. Fixed.
@changelog_1318_li
@changelog_1325_li
#The emergency reserve file has been removed. It didn't provide an appropriate solution for the problem. It is still possible for an application to detect and deal with the low disk space problem (deleting temporary files for example) using DatabaseEventListener.diskSpaceIsLow, but this method is now always called with stillAvailable=0.
@changelog_1319_li
@changelog_1326_li
#Build: JAVA_HOME is now automatically detected on Mac OS X.
@changelog_1320_li
@changelog_1327_li
#Testing for local connections was very slow on some systems.
@changelog_1321_li
@changelog_1328_li
#The cache memory usage calculation is more conservative.
@changelog_1322_li
@changelog_1329_li
#Allocating space got slower and slower the larger the database.
@changelog_1323_li
@changelog_1330_li
#ALTER TABLE ALTER COLUMN could throw the wrong exception in the last version (Table not found).
@changelog_1324_li
@changelog_1331_li
#Updatable result sets: the key columns can now be updated.
@changelog_1325_li
@changelog_1332_li
#The H2DatabaseProvider for ActiveObjects is now included in the tools section.
@changelog_1326_li
@changelog_1333_li
#The H2Platform for Oracle Toplink Essential has been improved a bit.
@changelog_1327_li
@changelog_1334_li
#The Windows service to start H2 didn't work in version 1.1.
@changelog_1328_li
@changelog_1335_li
#File systems with a maximum file size (for example FAT) are now supported using the file prefix 'split:'. In this case the files are split in parts of 1 GB. Example URL: jdbc:h2:split:~/db/test. If you want to split into parts of 1 MB, use jdbc:h2:split:20:~/db/test (the part size is 1 << x, the default is 30 meaning 1 GB).
@changelog_1329_li
@changelog_1336_li
#The database now tries to detect if the classloader or virtual machine has almost shut down by checking if static final variables are set to null. This should help reduce exceptions when stopping the web application.
@changelog_1330_li
@changelog_1337_li
#Compatibility for MS SQL Server DATEDIFF(YYYY, .., ..)
@changelog_1331_li
@changelog_1338_li
#ResultSet.getObject for CLOB or BLOB will return a java.sql.Clob / java.sql.Blob object instead of a java.io.Reader / java.io.InputStream as in version 1.0. This behavior can be changed using the system property h2.returnLobObjects (true by default for version 1.1).
@changelog_1332_li
@changelog_1339_li
#The interface CloseListener has a new method 'remove' that is called when the trigger is dropped.
@changelog_1333_li
@changelog_1340_li
#Fulltext search: there was a memory leak when creating and dropping fulltext indexes in a loop.
#To start the <a href="quickstart.html#h2_console">H2 Console tool</a>, double click the jar file, or run <code>java -jar h2*.jar</code>, <code>h2.bat</code>, or <code>h2.sh</code>.
...
...
@@ -2492,7 +2513,7 @@ jdbc:h2:mem:
ダウンロード
@download_1001_h3
#Version 1.2.124 (2009-11-20, Beta)
#Version 1.2.125 (2009-12-06, Beta)
@download_1002_a
Windows Installer
...
...
@@ -6338,7 +6359,7 @@ H2 データベース エンジン
#Download Beta
@mainWeb_1007_td
# Version 1.2.124 (2009-11-20):
# Version 1.2.125 (2009-12-06):
@mainWeb_1008_a
#Windows Installer (4 MB)
...
...
@@ -8729,175 +8750,175 @@ H2 コンソール アプリケーション
#Optimization: don't lock when the database is read-only
@roadmap_1225_li
#Integrate spatial functions from http://geosysin.iict.ch/irstv-trac/wiki/H2spatial/Download
#Issue 146: Support merge join.
@roadmap_1226_li
#Support COSH, SINH, and TANH functions
#Integrate spatial functions from http://geosysin.iict.ch/irstv-trac/wiki/H2spatial/Download
@roadmap_1227_li
#Oracle: support DECODE method (convert to CASE WHEN).
#Support COSH, SINH, and TANH functions
@roadmap_1228_li
#Native search: support "phrase search", wildcard search (* and ?), case-insensitive search, boolean operators, and grouping
#Oracle: support DECODE method (convert to CASE WHEN).
@roadmap_1229_li
#Improve documentation of access rights
#Native search: support "phrase search", wildcard search (* and ?), case-insensitive search, boolean operators, and grouping
@roadmap_1230_li
#Support ENUM data type (see MySQL, PostgreSQL, MS SQL Server, maybe others)
#Improve documentation of access rights
@roadmap_1231_li
#Command line option for the H2 Console and TCP configuration (which .h2.server.properties and .h2.keystore to use)
#Support ENUM data type (see MySQL, PostgreSQL, MS SQL Server, maybe others)
@roadmap_1232_li
#Support a schema name for Java functions
#Command line option for the H2 Console and TCP configuration (which .h2.server.properties and .h2.keystore to use)
@roadmap_1233_li
#Remember the user defined data type (domain) of a column
#Support a schema name for Java functions
@roadmap_1234_li
#Support Jackcess (MS Access databases)
#Remember the user defined data type (domain) of a column
@roadmap_1235_li
#Built-in methods to write large objects (BLOB and CLOB): FILE_WRITE('test.txt', 'Hello World')
#Support Jackcess (MS Access databases)
@roadmap_1236_li
#MVCC: support transactionally consistent backups using SCRIPT
#Built-in methods to write large objects (BLOB and CLOB): FILE_WRITE('test.txt', 'Hello World')
@roadmap_1237_li
#Improve time to open large databases (see mail 'init time for distributed setup')
#MVCC: support transactionally consistent backups using SCRIPT
@roadmap_1238_li
#Move Maven 2 repository from hsql.sf.net to h2database.sf.net
#Improve time to open large databases (see mail 'init time for distributed setup')
#Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
#Javadoc: document design patterns used
@roadmap_1242_li
#Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
#Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
@roadmap_1243_li
#Improve LOB in directories performance
#Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
@roadmap_1244_li
#Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
#Improve LOB in directories performance
@roadmap_1245_li
#HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
#Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
@roadmap_1246_li
#Translation: use ?? in help.csv
#HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
@roadmap_1247_li
#Translated .pdf
#Translation: use ?? in help.csv
@roadmap_1248_li
#Cluster: hot deploy (adding a node at runtime)
#Translated .pdf
@roadmap_1249_li
#MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
#Cluster: hot deploy (adding a node at runtime)
@roadmap_1250_li
#Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
#MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
@roadmap_1251_li
#RECOVER=2 to backup the database, run recovery, open the database
#Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
@roadmap_1252_li
#Recovery should work with encrypted databases
#RECOVER=2 to backup the database, run recovery, open the database
@roadmap_1253_li
#Corruption: new error code, add help
#Recovery should work with encrypted databases
@roadmap_1254_li
#Space reuse: after init, scan all storages and free those that don't belong to a live database object
#Corruption: new error code, add help
@roadmap_1255_li
#Use FilterIn / FilterOut putStream?
#Space reuse: after init, scan all storages and free those that don't belong to a live database object
@roadmap_1256_li
#Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
#Use FilterIn / FilterOut putStream?
@roadmap_1257_li
#Support NOCACHE table option (Oracle)
#Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
@roadmap_1258_li
#Support table partitioning.
#Support NOCACHE table option (Oracle).
@roadmap_1259_li
#Index usage for UPDATE ... WHERE .. IN (SELECT...)
#Support table partitioning.
@roadmap_1260_li
#Add regular javadocs (using the default doclet, but another css) to the homepage.
#Index usage for UPDATE ... WHERE .. IN (SELECT...)
@roadmap_1261_li
#The database should be kept open for a longer time when using the server mode.
#Add regular javadocs (using the default doclet, but another css) to the homepage.
@roadmap_1262_li
#Javadocs: for each tool, add a copy & paste sample in the class level.
#The database should be kept open for a longer time when using the server mode.
@roadmap_1263_li
#Javadocs: add @author tags.
#Javadocs: for each tool, add a copy & paste sample in the class level.
@roadmap_1264_li
#Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
#Javadocs: add @author tags.
@roadmap_1265_li
#MySQL compatibility: real SQL statement for DESCRIBE TEST
#Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
@roadmap_1266_li
#Use a default delay of 1 second before closing a database.
#MySQL compatibility: real SQL statement for DESCRIBE TEST
@roadmap_1267_li
#Write (log) to system table before adding to internal data structures.
#Use a default delay of 1 second before closing a database.
@roadmap_1268_li
#Support very large deletes and updates.
#Write (log) to system table before adding to internal data structures.
@roadmap_1269_li
#Doclet (javadocs): constructors are not listed.
#Support very large deletes and updates.
@roadmap_1270_li
#Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
#Doclet (javadocs): constructors are not listed.
@roadmap_1271_li
#Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
#Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
@roadmap_1272_li
#MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
#Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
@roadmap_1273_li
#Oracle compatibility: support NLS_DATE_FORMAT.
#MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
@roadmap_1274_li
#Support flashback queries as in Oracle.
#Oracle compatibility: support NLS_DATE_FORMAT.
@roadmap_1275_li
#Import / Export of fixed with text files.
#Support flashback queries as in Oracle.
@roadmap_1276_li
#Support OUT parameters in user-defined procedures.
#Import / Export of fixed with text files.
@roadmap_1277_li
#Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
#Support OUT parameters in user-defined procedures.
@roadmap_1278_li
#HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
#Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
@roadmap_1279_li
#Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
#HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
@roadmap_1280_li
#Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
#Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
@roadmap_1281_li
#Support merge join.
#Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
@roadmap_1282_li
#H2 Console: in-place autocomplete.
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@@ -9170,43 +9191,43 @@ H2 コンソール アプリケーション
#Store the Lucene index in the database itself.
@roadmap_1372_li
#Oracle compatibility: support DECODE(x, ...).
#Support standard MERGE statement: http://en.wikipedia.org/wiki/Merge_%28SQL%29
@roadmap_1373_li
#Console: Start Browser: if ip number changed, try localhost instead.
#Oracle compatibility: support DECODE(x, ...).
@roadmap_1374_li
#MVCC: compare concurrent update behavior with PostgreSQL and Oracle.
#Console: Start Browser: if ip number changed, try localhost instead.
@roadmap_1375_li
#HSQLDB compatibility: CREATE FUNCTION (maybe using a Function interface).
#MVCC: compare concurrent update behavior with PostgreSQL and Oracle.
@roadmap_1376_li
#HSQLDB compatibility: support CALL "java.lang.Math.sqrt"(2.0)
#HSQLDB compatibility: CREATE FUNCTION (maybe using a Function interface).
@roadmap_1377_li
#Support comma as the decimal separator in the CSV tool.
#HSQLDB compatibility: support CALL "java.lang.Math.sqrt"(2.0)
@roadmap_1378_li
#Compatibility: Support jdbc:default:connection using ThreadLocal (part of SQLJ)
#Support comma as the decimal separator in the CSV tool.
@roadmap_1379_li
#Compatibility: Java functions with SQLJ Part1 http://www.acm.org/sigmod/record/issues/9912/standards.pdf.gz
#Compatibility: Support jdbc:default:connection using ThreadLocal (part of SQLJ)
@roadmap_1380_li
#Compatibility: Java functions with SQL/PSM (Persistent Stored Modules) - need to find the documentation.
#Compatibility: Java functions with SQLJ Part1 http://www.acm.org/sigmod/record/issues/9912/standards.pdf.gz
@roadmap_1381_li
#CACHE_SIZE: automatically use a fraction of Runtime.maxMemory - maybe automatically the second level cache.
#Compatibility: Java functions with SQL/PSM (Persistent Stored Modules) - need to find the documentation.
@roadmap_1382_li
#Support date/time/timestamp as documented in http://en.wikipedia.org/wiki/ISO_8601
#CACHE_SIZE: automatically use a fraction of Runtime.maxMemory - maybe automatically the second level cache.
@roadmap_1383_li
#PostgreSQL compatibility: when in PG mode, treat BYTEA data like PG.
#Support date/time/timestamp as documented in http://en.wikipedia.org/wiki/ISO_8601
@roadmap_1384_li
#Support standard MERGE statement: http://en.wikipedia.org/wiki/Merge_%28SQL%29
#PostgreSQL compatibility: when in PG mode, treat BYTEA data like PG.
