@@ -1406,1059 +1406,1062 @@ Next Version (unreleased)
EXPLAIN: The query plan now contains ".tableScan" if a table scan is used.
@changelog_1003_li
The index was not used if there were multiple IN(..) conditions.
IN(..): when combining and IN(..) condition with a condition that didn't use an index, the result could contain duplicate rows.
@changelog_1004_li
For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
IN(..): the index was not used if there were multiple IN(..) conditions.
@changelog_1005_li
PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
@changelog_1006_li
A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
@changelog_1007_li
When using temporary table, the database didn't shrink sometimes when closing.
A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
@changelog_1008_li
Large transactions could run out of heap space. Fixed.
When using temporary table, the database didn't shrink sometimes when closing. Also, sometimes a database could not recover normally.
@changelog_1009_li
The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
Large transactions could run out of heap space. Fixed.
@changelog_1010_li
Creating a database was delayed about 2 seconds if the directory didn't exist.
The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
@changelog_1011_li
Creating a database was delayed about 2 seconds if the directory didn't exist.
@changelog_1012_li
Implemented INIT feature. If the database URL contains ";INIT=...;" then the DDL or DML commands following are executed on startup. Example URL: jdbc:h2:mem:test;INIT=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
@changelog_1012_h2
@changelog_1013_h2
Version 1.2.129 (2010-02-19)
@changelog_1013_li
@changelog_1014_li
The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
@changelog_1014_li
@changelog_1015_li
CREATE ALIAS: error message when compiling Java code have been improved.
@changelog_1015_li
@changelog_1016_li
MVCC: creating a table with an incorrect constraint could cause strange errors.
@changelog_1016_li
@changelog_1017_li
Hash indexes now are only used for single column indexes.
@changelog_1017_li
@changelog_1018_li
The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
@changelog_1018_li
@changelog_1019_li
The file system abstraction no longer throws SQL exceptions.
@changelog_1019_li
@changelog_1020_li
DatabaseEventListener.diskSpaceIsLow has changed.
@changelog_1020_li
@changelog_1021_li
The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
@changelog_1021_li
@changelog_1022_li
SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
@changelog_1022_li
@changelog_1023_li
When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
@changelog_1023_li
@changelog_1024_li
The BNF parser now uses the visitor pattern.
@changelog_1024_li
@changelog_1025_li
Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
@changelog_1025_li
@changelog_1026_li
The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
@changelog_1026_li
@changelog_1027_li
H2 Console: asynchronous login (using a DatabaseEventListener) is no longer supported.
@changelog_1027_li
@changelog_1028_li
A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
@changelog_1028_li
@changelog_1029_li
The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
@changelog_1029_li
@changelog_1030_li
Tools: the method run(String... args) has been renamed to runTool(String... args).
@changelog_1030_li
@changelog_1031_li
Server.startWebServer(Connection) was not working as expected.
@changelog_1031_li
@changelog_1032_li
The database URL option ACCESS_MODE_LOG is no longer supported.
@changelog_1032_li
@changelog_1033_li
The database URL option RECOVER has currently no effect.
@changelog_1033_li
@changelog_1034_li
Converting an old (non-page store) database is no longer supported using this version.
@changelog_1034_li
@changelog_1035_li
The following system properties are no longer supported: h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
@changelog_1035_li
@changelog_1036_li
The setting LOG has currently no effect (it only had an effect when the page store was disabled).
@changelog_1036_li
@changelog_1037_li
Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
@changelog_1037_li
@changelog_1038_li
The translated resources are now stored in UTF-8 format.
@changelog_1038_li
@changelog_1039_li
The Windows service wrapper now detects if multiple versions of H2 are installed.
@changelog_1039_h2
@changelog_1040_h2
Version 1.2.128 (2010-01-30)
@changelog_1040_li
@changelog_1041_li
There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http://code.google.com/p/h2database/issues/detail?id=158
@changelog_1041_li
@changelog_1042_li
The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
@changelog_1042_li
@changelog_1043_li
Automatic conversion of old databases to the page store format failed if the database contained LOB files.
@changelog_1043_li
@changelog_1044_li
Nested subqueries didn't work for INSERT INTO and IN(..). Example: insert into test ((select 1));
@changelog_1044_li
@changelog_1045_li
If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
@changelog_1045_li
@changelog_1046_li
Less classes are loaded when using the database in embedded mode.
@changelog_1046_li
@changelog_1047_li
The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
@changelog_1047_li
@changelog_1048_li
Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example: select count(*) from (select 1 union (select 2 intersect select 2)) x;
@changelog_1048_li
@changelog_1049_li
Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
@changelog_1049_li
@changelog_1050_li
Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
@changelog_1050_li
@changelog_1051_li
Documentation: the javadocs for Csv.write and read used the wrong default charset.
@changelog_1051_li
@changelog_1052_li
MVCC: if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
@changelog_1052_li
@changelog_1053_li
If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
@changelog_1053_li
@changelog_1054_li
Triggers: INSTEAD OF triggers are now supported. Such triggers can be defined on views.
@changelog_1054_li
@changelog_1055_li
New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
@changelog_1055_li
@changelog_1056_li
Slightly improved performance if the table is already locked.
@changelog_1056_li
@changelog_1057_li
CompressLZF: faster decompression.
@changelog_1057_li
@changelog_1058_li
PgServer: the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
@changelog_1058_li
@changelog_1059_li
Serialized access mode (server-less multi-connection mode): fixed getGeneratedKeys() for sequences.
@changelog_1059_h2
@changelog_1060_h2
Version 1.2.127 (2010-01-15)
@changelog_1060_li
@changelog_1061_li
Serialized access mode (server-less multi-connection mode): sequences did not work as expected (there were gaps in generated values when using multiple connections).
@changelog_1061_li
@changelog_1062_li
Page store: new databases can not be opened with older versions.
@changelog_1062_li
@changelog_1063_li
Page store: adding data to new database is now faster.
@changelog_1063_li
@changelog_1064_li
File system: getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
@changelog_1064_li
@changelog_1065_li
PgServer: incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches!
@changelog_1065_li
@changelog_1066_li
SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
@changelog_1066_li
@changelog_1067_li
Page store: the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
@changelog_1067_li
@changelog_1068_li
Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
@changelog_1068_li
@changelog_1069_li
If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
@changelog_1069_li
@changelog_1070_li
Alter table is now supported even if a table has views defined.
@changelog_1070_li
@changelog_1071_li
Fulltext search: exceptions within the fulltext search package had the wrong SQL state.
@changelog_1071_li
@changelog_1072_li
The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
@changelog_1072_li
@changelog_1073_li
Trigger can now be called on rollback.
@changelog_1073_li
@changelog_1074_li
The shell script h2.sh ignored command line line arguments.
@changelog_1074_li
@changelog_1075_li
When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
@changelog_1075_li
@changelog_1076_li
The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
@changelog_1076_li
@changelog_1077_li
Native fulltext search: before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
@changelog_1077_li
@changelog_1078_li
The .trace.db file is now only created if required.
@changelog_1078_li
@changelog_1079_li
Shell tool: improved PostgreSQL compatibility.
@changelog_1079_li
@changelog_1080_li
Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
@changelog_1080_li
@changelog_1081_li
H2 Console: data that is too long is now abbreviated as follows: text... (100000 characters). A large binary is abbreviated as follows: abcdef... (100000 bytes).
@changelog_1081_li
@changelog_1082_li
Faster data conversion from BIGINT or INT to DECIMAL.
@changelog_1082_li
@changelog_1083_li
Server-less multi-connection mode: try to delete log files if switching between read/write operations.
@changelog_1083_li
@changelog_1084_li
CompressLZF: Faster decompress and improved javadocs
@changelog_1084_h2
@changelog_1085_h2
Version 1.2.126 (2009-12-18)
@changelog_1085_li
@changelog_1086_li
The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
@changelog_1086_li
@changelog_1087_li
CSVREAD: when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
@changelog_1087_li
@changelog_1088_li
Optimization index conditions of the form 'column=NULL' (which is always false; unlike 'column IS NULL').
@changelog_1088_li
@changelog_1089_li
Script command and tool: the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
@changelog_1089_li
@changelog_1090_li
Statements with IN(SELECT..) conditions could produce the wrong result. Example: index on id, name; query: select * from test where id between 1 and 3 and name in (select 'World').
@changelog_1090_li
@changelog_1091_li
Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example: index on id; index on name; query: select * from (select * from test) where id=1 and name in('a', 'b'). select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1091_li
@changelog_1092_li
Page store: a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
@changelog_1092_li
@changelog_1093_li
JaQu: the decompiler has been improved, and a few test cases already work. It is still incomplete however.
@changelog_1093_li
@changelog_1094_li
LIKE: any letter is now allowed after the escape character (which is still '\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
@changelog_1094_li
@changelog_1095_li
The reserve heap memory is no longer used.
@changelog_1095_li
@changelog_1096_li
Database.checkpoint() could throw a NullPointerException.
@changelog_1096_h2
@changelog_1097_h2
Version 1.2.125 (2009-12-06)
@changelog_1097_li
@changelog_1098_li
Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
@changelog_1098_li
@changelog_1099_li
The shell tool now has a very simple statement history.
@changelog_1099_li
@changelog_1100_li
The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
@changelog_1100_li
@changelog_1101_li
Right outer joins on tables that were already 'inner joined' was processed incorrectly.
@changelog_1101_li
@changelog_1102_li
Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1102_li
@changelog_1103_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.
@changelog_1103_li
@changelog_1104_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.
@changelog_1104_li
@changelog_1105_li
Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
@changelog_1105_li
@changelog_1106_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.
@changelog_1106_li
@changelog_1107_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').
@changelog_1107_li
@changelog_1108_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).
@changelog_1108_li
@changelog_1109_li
The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
@changelog_1109_li
@changelog_1110_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.
@changelog_1110_li
@changelog_1111_li
The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
@changelog_1111_li
@changelog_1112_li
More bugs in the server-less multi-connection mode have been fixed.
@changelog_1112_li
@changelog_1113_li
When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
@changelog_1113_li
@changelog_1114_li
JdbcConnectionPool.getConnection() could throw a NullPointerException.
@changelog_1114_li
@changelog_1115_li
User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
@changelog_1115_li
@changelog_1116_li
User defined functions with source code didn't work after re-opening the database.
@changelog_1116_li
@changelog_1117_li
The newsfeeds are now Atom 1.0 standard compliant.
@changelog_1117_li
@changelog_1118_li
The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
@changelog_1118_li
@changelog_1119_li
Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
@changelog_1119_li
@changelog_1120_li
Drop table did not delete lob files in old file store (not PAGE_STORE).
@changelog_1120_h2
@changelog_1121_h2
Version 1.2.124 (2009-11-20)
@changelog_1121_li
@changelog_1122_li
Clustering: there is now a way to detect which cluster instances are running.
@changelog_1122_li
@changelog_1123_li
ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
@changelog_1123_li
@changelog_1124_li
The file lock thread is now stopped when the database is closed.
@changelog_1124_li
@changelog_1125_li
Issue 140: the Script tool now supports writing to a stream.
@changelog_1125_li
@changelog_1126_li
Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
@changelog_1126_li
@changelog_1127_li
Page store: new databases can not be opened with older versions.
@changelog_1127_li
@changelog_1128_li
Page store: multi-column indexes didn't work if the cache was very small.
@changelog_1128_li
@changelog_1129_li
Page store: opening a database could theoretically result in an endless loop.
@changelog_1129_li
@changelog_1130_li
Page store: adding large indexed columns could get very slow.
@changelog_1130_li
@changelog_1131_li
Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
@changelog_1131_li
@changelog_1132_li
Page store: the recover tool sometimes generated a script file that contained duplicate data.
@changelog_1132_li
@changelog_1133_li
Page store: sometimes opening a read-only database failed.
@changelog_1133_li
@changelog_1134_li
Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
@changelog_1134_li
@changelog_1135_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_1135_li
@changelog_1136_li
Page store: getting the min value from a descending index with NULL entries could return the wrong result.
@changelog_1136_li
@changelog_1137_li
Page store: improved auto-recovery after power failure.
@changelog_1137_li
@changelog_1138_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_1138_li
@changelog_1139_li
User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
@changelog_1139_li
@changelog_1140_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_1140_li
@changelog_1141_li
Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
@changelog_1141_li
@changelog_1142_li
Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
@changelog_1142_li
@changelog_1143_li
Improved read-only database detection.
@changelog_1143_h2
@changelog_1144_h2
Version 1.2.123 (2009-11-08)
@changelog_1144_li
@changelog_1145_li
Page store: new databases can not be opened with older versions.
@changelog_1145_li
@changelog_1146_li
Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
@changelog_1146_li
@changelog_1147_li
Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
@changelog_1147_li
@changelog_1148_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_1148_li
@changelog_1149_li
The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
@changelog_1149_li
@changelog_1150_li
The Lucene fulltext search now also returns the score.
@changelog_1150_li
@changelog_1151_li
New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
@changelog_1151_li
@changelog_1152_li
Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
@changelog_1152_li
@changelog_1153_li
Improved error messages: identifiers and values are now quoted.
@changelog_1153_li
@changelog_1154_li
Improved error message when casting a value failed: the column name and type is included in the message.
@changelog_1154_li
@changelog_1155_li
Improved support for GAE for Java thanks to Vince Bonfanti.
@changelog_1155_h2
@changelog_1156_h2
Version 1.2.122 (2009-10-28)
@changelog_1156_li
@changelog_1157_li
The native fulltext search now supports streaming CLOB data.
@changelog_1157_li
@changelog_1158_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_1158_li
@changelog_1159_li
Dropping the current user is now allowed if another admin user exists.
@changelog_1159_li
@changelog_1160_li
Values of type BINARY or BLOB could not be converted to the data type OTHER.
@changelog_1160_li
@changelog_1161_li
SHUTDOWN COMPACT now fully compacts the database.
@changelog_1161_li
@changelog_1162_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_1162_li
@changelog_1163_li
New sorted insert optimization (see Performance / Database Performance Tuning).
@changelog_1163_li
@changelog_1164_li
Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
@changelog_1164_li
@changelog_1165_li
Page store: opening a large database was slow if it was not closed before.
@changelog_1165_li
@changelog_1166_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_1166_li
@changelog_1167_li
The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
@changelog_1167_li
@changelog_1168_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_1168_li
@changelog_1169_li
Certain queries were not sorted if subselect queries were involved
@changelog_1169_li
@changelog_1170_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_1170_h2
@changelog_1171_h2
Version 1.2.121 (2009-10-11)
@changelog_1171_li
@changelog_1172_li
Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
@changelog_1172_li
@changelog_1173_li
CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
@changelog_1173_li
@changelog_1174_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_1174_li
@changelog_1175_li
Page store bugs were fixed. Large values in indexed columns could corrupt the index.
@changelog_1175_li
@changelog_1176_li
The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
@changelog_1176_li
@changelog_1177_li
New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
@changelog_1177_h2
@changelog_1178_h2
Version 1.2.120 (2009-10-04)
@changelog_1178_li
@changelog_1179_li
This is a beta version.
@changelog_1179_li
@changelog_1180_li
Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
@changelog_1180_li
@changelog_1181_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_1181_li
@changelog_1182_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_1182_li
@changelog_1183_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_1183_li
@changelog_1184_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_1184_li
@changelog_1185_li
PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
@changelog_1185_li
@changelog_1186_li
Linked tables now support default values when inserting, updating or merging.
@changelog_1186_li
@changelog_1187_li
Bugfixes in the page store.
@changelog_1187_li
@changelog_1188_li
Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
@changelog_1188_li
@changelog_1189_li
Allow writing to linked tables in readonly databases.
@changelog_1189_h2
@changelog_1190_h2
Version 1.1.119 (2009-09-26)
@changelog_1190_li
SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1191_li
Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1192_li
New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
@changelog_1193_li
New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
@changelog_1194_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.
New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
@changelog_1195_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.
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_1196_li
ChangeFileEncryption did not work with Lob subdirectories. Fixed.
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_1197_li
Issue 121: JaQu: new simple update and merge methods.
ChangeFileEncryption did not work with Lob subdirectories. Fixed.
@changelog_1198_li
Issue 120: JaQu didn't close result sets.
Issue 121: JaQu: new simple update and merge methods.
@changelog_1199_li
Issue 119: JaQu creates wrong WHERE conditions on some inputs.
Issue 120: JaQu didn't close result sets.
@changelog_1200_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.
Issue 119: JaQu creates wrong WHERE conditions on some inputs.
@changelog_1201_li
SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
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_1202_li
The Recover tool now also processes the log files, however applying those changes is still a manual process.
SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
@changelog_1203_li
New sample application that shows how to pass data to a trigger.
The Recover tool now also processes the log files, however applying those changes is still a manual process.
@changelog_1204_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.
New sample application that shows how to pass data to a trigger.
@changelog_1205_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().
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_1206_li
Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
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_1207_li
Statement.getConnection() threw an exception if the connection was already closed.
Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
@changelog_1208_li
The native fulltext index kept a reference to a database after the database was closed.
Statement.getConnection() threw an exception if the connection was already closed.
@changelog_1209_li
Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
The native fulltext index kept a reference to a database after the database was closed.
@changelog_1210_li
Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1211_li
The optimizer does a better job for joins if indexes are missing.
@changelog_1211_h2
@changelog_1212_h2
Version 1.1.118 (2009-09-04)
@changelog_1212_li
@changelog_1213_li
SHOW COLUMNS only listed indexed columns.
@changelog_1213_li
@changelog_1214_li
When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
@changelog_1214_li
@changelog_1215_li
DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
@changelog_1215_li
@changelog_1216_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_1216_li
@changelog_1217_li
Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
@changelog_1217_li
@changelog_1218_li
Better support GaeVFS (Google App Engine Virtual File System).
@changelog_1218_li
@changelog_1219_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_1219_li
@changelog_1220_li
Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1220_li
@changelog_1221_li
PreparedStatement.setObject now converts a java.lang.Character to a string.
@changelog_1221_li
@changelog_1222_li
H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
@changelog_1222_li
@changelog_1223_li
Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
@changelog_1223_li
@changelog_1224_li
H2 Console: indexes of tables of non-default schemas are now also listed.
@changelog_1224_li
@changelog_1225_li
Issue 111: Multi-version concurrency / duplicate primary key after rollback.
@changelog_1225_li
@changelog_1226_li
Issue 110: Multi-version concurrency / wrong exception is thrown.
@changelog_1226_li
@changelog_1227_li
Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
@changelog_1227_li
@changelog_1228_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_1228_li
@changelog_1229_li
The stack trace of very common exceptions is no longer written to the .trace.db file by default.
@changelog_1229_li
@changelog_1230_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_1230_li
@changelog_1231_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_1231_h2
@changelog_1232_h2
Version 1.1.117 (2009-08-09)
@changelog_1232_li
@changelog_1233_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_1233_li
@changelog_1234_li
JaQu: the order of the fields in the database no longer needs to match the order in the database.
@changelog_1234_li
@changelog_1235_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_1235_li
@changelog_1236_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_1236_li
@changelog_1237_li
Views using functions were not re-evaluated when necessary.
@changelog_1237_li
@changelog_1238_li
Improved MySQL compatibility for SHOW COLUMNS.
@changelog_1238_li
@changelog_1239_li
Improved PostgreSQL compatibility for timestamp literals with timezone.
@changelog_1239_li
@changelog_1240_li
Sergi Vladykin translated the error messages to Russian. Thanks a lot!
@changelog_1240_li
@changelog_1241_li
Support for Java 6 DatabaseMetaData.getTables, getColumns, getProcedures, and getProcedureColumns.
@changelog_1241_li
@changelog_1242_li
Issue 101: Rollback of a large transaction (more than 100000 rows) could fail.
@changelog_1242_li
@changelog_1243_li
Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1243_li
@changelog_1244_li
The functions LENGTH, OCTET_LENGTH, and BIT_LENGTH now return BIGINT.
@changelog_1244_li
@changelog_1245_li
Data types CLOB and BLOB: the maximum precision was Integer.MAX_VALUE, it is now Long.MAX_VALUE.
@changelog_1245_li
@changelog_1246_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_1246_li
@changelog_1247_li
Parsing SQL script files is now faster.
@changelog_1247_li
@changelog_1248_li
CSV reading is now faster.
@changelog_1248_li
@changelog_1249_li
SimpleResultSet.newInstance(SimpleRowSource rs) did not work.
@changelog_1249_h2
@changelog_1250_h2
Version 1.1.116 (2009-07-18)
@changelog_1250_li
@changelog_1251_li
Server-less multi-connection mode: more bugs are fixed.
@changelog_1251_li
@changelog_1252_li
The built-in help (INFORMATION_SCHEMA.HELP) is smaller, shrinking the jar file size a bit.
@changelog_1252_li
@changelog_1253_li
H2 Console: column of tables of non-default schemas are now also listed, except for schemas starting with 'INFO'.
@changelog_1253_li
@changelog_1254_li
ALTER TABLE: removing an auto-increment or identity column didn't remove the sequence.
@changelog_1254_li
@changelog_1255_li
Creating indexes is now a bit faster.
@changelog_1255_li
@changelog_1256_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_1256_li
@changelog_1257_li
PG Server: improved compatibility by using the type ids of the PostgreSQL driver. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1257_li
@changelog_1258_li
H2 Console: Oracle system tables are no longer listed, improving performance.
@changelog_1258_li
@changelog_1259_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_1259_li
@changelog_1260_li
New system property h2.defaultResultSetConcurrency to change the default result set concurrency.
@changelog_1260_li
@changelog_1261_li
JDBC: using an invalid result set type or concurrency now throws an exception.
@changelog_1261_li
@changelog_1262_li
If a pooled connection was not closed but garbage collected, a NullPointerException could occur.
@changelog_1262_li
@changelog_1263_li
Fulltext search: a NullPointerException was thrown when updating a value that was NULL previously.
@changelog_1263_li
@changelog_1264_li
The Recover tool did not work with .data.db files of the wrong size.
@changelog_1264_li
@changelog_1265_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_1265_li
@changelog_1266_li
The soft-references cache (CACHE_TYPE=SOFT_LRU) could throw a NullPointerException.
@changelog_1266_li
@changelog_1267_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_1267_h2
@changelog_1268_h2
Version 1.1.115 (2009-06-21)
@changelog_1268_li
@changelog_1269_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_1269_li
@changelog_1270_li
ALTER TABLE could throw an exception "object already exists" in some cases.
@changelog_1270_li
@changelog_1271_li
Views: in some situations, an ArrayIndexOutOfBoundsException was thrown when using the same view concurrently.
@changelog_1271_li
@changelog_1272_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_1272_li
@changelog_1273_li
H2 Console: the language was reset to the browser language when disconnecting.
@changelog_1273_li
@changelog_1274_li
H2 Console: improved Polish translation.
@changelog_1274_li
@changelog_1275_li
Server-less multi-connection mode: more bugs are fixed.
@changelog_1275_li
@changelog_1276_li
The download page now included the SHA1 checksums.
@changelog_1276_li
@changelog_1277_li
Shell tool: the file encoding workaround is now documented if you run java org.h2.tools.Shell -?.
@changelog_1277_li
@changelog_1278_li
The RunScript tool and SQL statement did not work with the compression method LZF.
@changelog_1278_li
@changelog_1279_li
Fulltext search: searching for NULL or an empty string threw an exception.
@changelog_1279_li
@changelog_1280_li
Lucene fulltext search: FTL_DROP_ALL did not drop the triggers.
@changelog_1280_li
@changelog_1281_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_1281_li
@changelog_1282_li
Data types: LONG is now an alias for BIGINT.
@changelog_1282_h2
@changelog_1283_h2
Version 1.1.114 (2009-06-01)
@changelog_1283_li
@changelog_1284_li
ResultSetMetaData.getColumnClassName returned the wrong class for CLOB and BLOB columns.
@changelog_1284_li
@changelog_1285_li
Fulltext search: data is no longer deleted and re-inserted if the indexed columns didn't change.
@changelog_1285_li
@changelog_1286_li
In some situations, an ArrayIndexOutOfBoundsException was thrown when adding rows. This was caused by a bug in the b-tree code.
@changelog_1286_li
@changelog_1287_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_1287_li
@changelog_1288_li
The Recover tool did not always work when the database contains referential integrity constraints.
@changelog_1288_li
@changelog_1289_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_1289_h2
@changelog_1290_h2
Version 1.1.113 (2009-05-21)
@changelog_1290_li
@changelog_1291_li
Shell tool: the built-in commands EXIT, HELP, ?, LIST, and so on didn't work with a semicolon at the end.
@changelog_1291_li
@changelog_1292_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_1292_li
@changelog_1293_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_1293_li
@changelog_1294_li
Identifiers with a digit and then a dollar sign didn't work. Example: A1$B.
@changelog_1294_li
@changelog_1295_li
MS SQL Server compatibility: support for linked tables with NVARCHAR, NCHAR, NCLOB, and LONGNVARCHAR.
@changelog_1295_li
@changelog_1296_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_1296_li
@changelog_1297_li
Calling execute() or prepareStatement() with null as the SQL statement now throws an exception.
@changelog_1297_li
@changelog_1298_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_1298_li
@changelog_1299_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_1299_li
@changelog_1300_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_1300_h2
@changelog_1301_h2
Version 1.1.112 (2009-05-01)
@changelog_1301_li
@changelog_1302_li
JdbcPreparedStatement.toString() could throw a NullPointerException.
@changelog_1302_li
@changelog_1303_li
EclipseLink: added H2Platform.supportsIdentity().
@changelog_1303_li
@changelog_1304_li
Connection pool: the default login timeout is now 5 minutes.
@changelog_1304_li
@changelog_1305_li
After truncating tables, opening large databases could become slow because indexes were always re-built unnecessarily when opening.
@changelog_1305_li
@changelog_1306_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_1306_li
@changelog_1307_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_1307_li
@changelog_1308_li
Improved error message when the .lock.db file modification time is in the future.
@changelog_1308_li
@changelog_1309_li
The MERGE statement now returns 0 as the generated key if the row was updated.
@changelog_1309_li
@changelog_1310_li
Running code coverage is now automated.
@changelog_1310_li
@changelog_1311_li
A file system implementation can now be registered using FileSystem.register.
@changelog_1311_li
@changelog_1312_li
The database file system is no longer included in the jar file, it moved to the test section.
@changelog_1312_h2
@changelog_1313_h2
Version 1.1.111 (2009-04-10)
@changelog_1313_li
@changelog_1314_li
In-memory databases can now run inside the Google App Engine.
@changelog_1314_li
@changelog_1315_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_1315_li
@changelog_1316_li
The wrong exception was thrown when using unquoted text for the SQL statements COMMENT, ALTER USER, and SET PASSWORD.
@changelog_1316_li
@changelog_1317_li
The built-in connection pool did not roll back transactions and enable autocommit enabled after closing a connection.
@changelog_1317_li
@changelog_1318_li
Sometimes a StackOverflow occurred when checking for deadlock. See also http://code.google.com/p/h2database/issues/detail?id=61
@changelog_1318_li
@changelog_1319_li
The Shell tool no longer truncates results with only one column, and displays a message if data was truncated.
@changelog_1319_h2
@changelog_1320_h2
Version 1.1.110 (2009-04-03)
@changelog_1320_li
@changelog_1321_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_1321_li
@changelog_1322_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_1322_li
@changelog_1323_li
The data type of a SUBSTRING method was wrong.
@changelog_1323_li
@changelog_1324_li
ResultSet.findColumn and get methods with column label parameters now also check for matching column names (like most databases except MySQL).
@changelog_1324_li
@changelog_1325_li
H2 Console: the browser system property now supports a list of arguments. Example: java -Dh2.browser="open,-a,Safari,%url" ...
@changelog_1325_li
@changelog_1326_li
Improved Javadoc navigation (similar to Scaladoc).
@changelog_1326_li
@changelog_1327_li
H2 Console: auto-complete of identifiers did not work correctly for H2 databases in MySQL mode.
@changelog_1327_li
@changelog_1328_li
DISTINCT and GROUP BY on a CLOB column was broken.
@changelog_1328_li
@changelog_1329_li
The FTP server moved to the tools section and is no longer included in the h2*.jar file.
@changelog_1329_li
@changelog_1330_li
Improved error message for unsupported features: now the message says what exactly is not supported.
@changelog_1330_li
@changelog_1331_li
Improved OSGi support.
@changelog_1331_li
@changelog_1332_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_1332_li
@changelog_1333_li
The API of the tools changed a bit (each tool now returns an exit code).
@changelog_1333_li
@changelog_1334_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_1334_li
@changelog_1335_li
CREATE TABLE: improved compatibility (support for UNIQUE NOT NULL).
@changelog_1335_li
@changelog_1336_li
DatabaseMetaData.getSQLKeywords now returns the correct list.
@changelog_1336_li
@changelog_1337_li
Deterministic user defined functions did not work when the parameter was a column. Fixed.
@changelog_1337_li
@changelog_1338_li
JdbcConnectionPool.setLoginTimeout with 0 now uses the default timeout.
@changelog_1338_li
@changelog_1339_li
Creating a JdbcConnectionPool has been simplified a bit.
@changelog_1339_li
@changelog_1340_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_1340_li
@changelog_1341_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_1341_li
@changelog_1342_li
Linked tables to SQLite database can now be created.
@changelog_1342_li
@changelog_1343_li
Nested IN(IN(...)) didn't work.
@changelog_1343_li
@changelog_1344_li
NIO storage: the nio: prefix was using memory mapped files instead of FileChannel.
@changelog_1344_h2
@changelog_1345_h2
Version 1.1.109 (2009-03-14)
@changelog_1345_li
@changelog_1346_li
The optimization for IN(...) is now only used if comparing a column with an index.
@changelog_1346_li
@changelog_1347_li
User defined functions can now be deterministic (see CREATE ALIAS documentation).
@changelog_1347_li
@changelog_1348_li
Multiple nested queries in the FROM clause with parameters did not always work.
@changelog_1348_li
@changelog_1349_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_1349_li
@changelog_1350_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_1350_li
@changelog_1351_li
The functions BITOR, BITAND, BITXOR, and MOD now accept and return BIGINT instead of INT.
@changelog_1351_li
@changelog_1352_li
Could not use the same linked table multiple times in the same query.
@changelog_1352_li
@changelog_1353_li
Bugs in the server-less multi-connection mode have been fixed.
@changelog_1353_li
@changelog_1354_li
Column names could not be named "UNIQUE" (with the quotes).
@changelog_1354_li
@changelog_1355_li
New system function TRANSACTION_ID() to get the current transaction identifier for a session.
#A block encryption algorithm. See also: <a href="http://en.wikipedia.org/wiki/Advanced_Encryption_Standard">Wikipedia: AES</a>
@advanced_1347_td
Birthday Paradox
@advanced_1348_td
#Describes the higher than expected probability that two persons in a room have the same birthday. Also valid for randomly generated UUIDs. See also: <a href="http://en.wikipedia.org/wiki/Birthday_paradox">Wikipedia: Birthday Paradox</a> #Digest
#Describes the higher than expected probability that two persons in a room have the same birthday. Also valid for randomly generated UUIDs. See also: <a href="http://en.wikipedia.org/wiki/Birthday_paradox">Wikipedia: Birthday Paradox</a>
@advanced_1349_td
Digest
@advanced_1350_td
#Protocol to protect a password (but not to protect data). See also: <a href="http://www.faqs.org/rfcs/rfc2617.html">RFC 2617: HTTP Digest Access Authentication</a> #GCJ
#Protocol to protect a password (but not to protect data). See also: <a href="http://www.faqs.org/rfcs/rfc2617.html">RFC 2617: HTTP Digest Access Authentication</a>
@advanced_1351_td
GCJ
@advanced_1352_td
#Compiler for Java. <a href="http://gcc.gnu.org/java">GNU Compiler for the Java</a> and <a href="http://www.dobysoft.com/products/nativej">NativeJ (commercial)</a> #HTTPS
#Compiler for Java. <a href="http://gcc.gnu.org/java">GNU Compiler for the Java</a> and <a href="http://www.dobysoft.com/products/nativej">NativeJ (commercial)</a>
@advanced_1353_td
HTTPS
@advanced_1354_td
#A protocol to provide security to HTTP connections. See also: <a href="http://www.ietf.org/rfc/rfc2818.txt">RFC 2818: HTTP Over TLS</a> #Modes of Operation
#A protocol to provide security to HTTP connections. See also: <a href="http://www.ietf.org/rfc/rfc2818.txt">RFC 2818: HTTP Over TLS</a>
@advanced_1355_td
Modes of Operation
...
...
@@ -1073,31 +1073,31 @@ Modes of Operation
Salt
@advanced_1358_td
#Random number to increase the security of passwords. See also: <a href="http://en.wikipedia.org/wiki/Key_derivation_function">Wikipedia: Key derivation function</a> #SHA-256
#Random number to increase the security of passwords. See also: <a href="http://en.wikipedia.org/wiki/Key_derivation_function">Wikipedia: Key derivation function</a>
#A security vulnerability where an application embeds SQL statements or expressions in user input. See also: <a href="http://en.wikipedia.org/wiki/SQL_injection">Wikipedia: SQL Injection</a> #Watermark Attack (透かし攻撃)
#A security vulnerability where an application embeds SQL statements or expressions in user input. See also: <a href="http://en.wikipedia.org/wiki/SQL_injection">Wikipedia: SQL Injection</a>
@advanced_1363_td
Watermark Attack (透かし攻撃)
@advanced_1364_td
#Security problem of certain encryption programs where the existence of certain data can be proven without decrypting. For more information, search in the internet for 'watermark attack cryptoloop' #SSL/TLS
#Security problem of certain encryption programs where the existence of certain data can be proven without decrypting. For more information, search in the internet for 'watermark attack cryptoloop'
@advanced_1365_td
SSL/TLS
@advanced_1366_td
#Secure Sockets Layer / Transport Layer Security. See also: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a> #XTEA
#Secure Sockets Layer / Transport Layer Security. See also: <a href="http://java.sun.com/products/jsse/">Java Secure Socket Extension (JSSE)</a>
@advanced_1367_td
XTEA
...
...
@@ -1406,1059 +1406,1062 @@ Centralリポジトリの利用
#EXPLAIN: The query plan now contains ".tableScan" if a table scan is used.
@changelog_1003_li
#The index was not used if there were multiple IN(..) conditions.
#IN(..): when combining and IN(..) condition with a condition that didn't use an index, the result could contain duplicate rows.
@changelog_1004_li
#For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
#IN(..): the index was not used if there were multiple IN(..) conditions.
@changelog_1005_li
#PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
#For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
@changelog_1006_li
#A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
#PostgreSQL compatibility: when using the following exception was thrown: Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
@changelog_1007_li
#When using temporary table, the database didn't shrink sometimes when closing.
#A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
@changelog_1008_li
#Large transactions could run out of heap space. Fixed.
#When using temporary table, the database didn't shrink sometimes when closing. Also, sometimes a database could not recover normally.
@changelog_1009_li
#The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
#Large transactions could run out of heap space. Fixed.
@changelog_1010_li
#Creating a database was delayed about 2 seconds if the directory didn't exist.
#The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
@changelog_1011_li
#Creating a database was delayed about 2 seconds if the directory didn't exist.
@changelog_1012_li
#Implemented INIT feature. If the database URL contains ";INIT=...;" then the DDL or DML commands following are executed on startup. Example URL: jdbc:h2:mem:test;INIT=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
@changelog_1012_h2
@changelog_1013_h2
#Version 1.2.129 (2010-02-19)
@changelog_1013_li
@changelog_1014_li
#The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
@changelog_1014_li
@changelog_1015_li
#CREATE ALIAS: error message when compiling Java code have been improved.
@changelog_1015_li
@changelog_1016_li
#MVCC: creating a table with an incorrect constraint could cause strange errors.
@changelog_1016_li
@changelog_1017_li
#Hash indexes now are only used for single column indexes.
@changelog_1017_li
@changelog_1018_li
#The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
@changelog_1018_li
@changelog_1019_li
#The file system abstraction no longer throws SQL exceptions.
@changelog_1019_li
@changelog_1020_li
#DatabaseEventListener.diskSpaceIsLow has changed.
@changelog_1020_li
@changelog_1021_li
#The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
@changelog_1021_li
@changelog_1022_li
#SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
@changelog_1022_li
@changelog_1023_li
#When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
@changelog_1023_li
@changelog_1024_li
#The BNF parser now uses the visitor pattern.
@changelog_1024_li
@changelog_1025_li
#Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
@changelog_1025_li
@changelog_1026_li
#The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
@changelog_1026_li
@changelog_1027_li
#H2 Console: asynchronous login (using a DatabaseEventListener) is no longer supported.
@changelog_1027_li
@changelog_1028_li
#A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
@changelog_1028_li
@changelog_1029_li
#The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
@changelog_1029_li
@changelog_1030_li
#Tools: the method run(String... args) has been renamed to runTool(String... args).
@changelog_1030_li
@changelog_1031_li
#Server.startWebServer(Connection) was not working as expected.
@changelog_1031_li
@changelog_1032_li
#The database URL option ACCESS_MODE_LOG is no longer supported.
@changelog_1032_li
@changelog_1033_li
#The database URL option RECOVER has currently no effect.
@changelog_1033_li
@changelog_1034_li
#Converting an old (non-page store) database is no longer supported using this version.
@changelog_1034_li
@changelog_1035_li
#The following system properties are no longer supported: h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
@changelog_1035_li
@changelog_1036_li
#The setting LOG has currently no effect (it only had an effect when the page store was disabled).
@changelog_1036_li
@changelog_1037_li
#Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
@changelog_1037_li
@changelog_1038_li
#The translated resources are now stored in UTF-8 format.
@changelog_1038_li
@changelog_1039_li
#The Windows service wrapper now detects if multiple versions of H2 are installed.
@changelog_1039_h2
@changelog_1040_h2
#Version 1.2.128 (2010-01-30)
@changelog_1040_li
@changelog_1041_li
#There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http://code.google.com/p/h2database/issues/detail?id=158
@changelog_1041_li
@changelog_1042_li
#The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
@changelog_1042_li
@changelog_1043_li
#Automatic conversion of old databases to the page store format failed if the database contained LOB files.
@changelog_1043_li
@changelog_1044_li
#Nested subqueries didn't work for INSERT INTO and IN(..). Example: insert into test ((select 1));
@changelog_1044_li
@changelog_1045_li
#If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
@changelog_1045_li
@changelog_1046_li
#Less classes are loaded when using the database in embedded mode.
@changelog_1046_li
@changelog_1047_li
#The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
@changelog_1047_li
@changelog_1048_li
#Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example: select count(*) from (select 1 union (select 2 intersect select 2)) x;
@changelog_1048_li
@changelog_1049_li
#Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
@changelog_1049_li
@changelog_1050_li
#Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
@changelog_1050_li
@changelog_1051_li
#Documentation: the javadocs for Csv.write and read used the wrong default charset.
@changelog_1051_li
@changelog_1052_li
#MVCC: if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
@changelog_1052_li
@changelog_1053_li
#If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
@changelog_1053_li
@changelog_1054_li
#Triggers: INSTEAD OF triggers are now supported. Such triggers can be defined on views.
@changelog_1054_li
@changelog_1055_li
#New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
@changelog_1055_li
@changelog_1056_li
#Slightly improved performance if the table is already locked.
@changelog_1056_li
@changelog_1057_li
#CompressLZF: faster decompression.
@changelog_1057_li
@changelog_1058_li
#PgServer: the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
@changelog_1058_li
@changelog_1059_li
#Serialized access mode (server-less multi-connection mode): fixed getGeneratedKeys() for sequences.
@changelog_1059_h2
@changelog_1060_h2
#Version 1.2.127 (2010-01-15)
@changelog_1060_li
@changelog_1061_li
#Serialized access mode (server-less multi-connection mode): sequences did not work as expected (there were gaps in generated values when using multiple connections).
@changelog_1061_li
@changelog_1062_li
#Page store: new databases can not be opened with older versions.
@changelog_1062_li
@changelog_1063_li
#Page store: adding data to new database is now faster.
@changelog_1063_li
@changelog_1064_li
#File system: getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
@changelog_1064_li
@changelog_1065_li
#PgServer: incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches!
@changelog_1065_li
@changelog_1066_li
#SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
@changelog_1066_li
@changelog_1067_li
#Page store: the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
@changelog_1067_li
@changelog_1068_li
#Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
@changelog_1068_li
@changelog_1069_li
#If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
@changelog_1069_li
@changelog_1070_li
#Alter table is now supported even if a table has views defined.
@changelog_1070_li
@changelog_1071_li
#Fulltext search: exceptions within the fulltext search package had the wrong SQL state.
@changelog_1071_li
@changelog_1072_li
#The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
@changelog_1072_li
@changelog_1073_li
#Trigger can now be called on rollback.
@changelog_1073_li
@changelog_1074_li
#The shell script h2.sh ignored command line line arguments.
@changelog_1074_li
@changelog_1075_li
#When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
@changelog_1075_li
@changelog_1076_li
#The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
@changelog_1076_li
@changelog_1077_li
#Native fulltext search: before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
@changelog_1077_li
@changelog_1078_li
#The .trace.db file is now only created if required.
@changelog_1078_li
@changelog_1079_li
#Shell tool: improved PostgreSQL compatibility.
@changelog_1079_li
@changelog_1080_li
#Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
@changelog_1080_li
@changelog_1081_li
#H2 Console: data that is too long is now abbreviated as follows: text... (100000 characters). A large binary is abbreviated as follows: abcdef... (100000 bytes).
@changelog_1081_li
@changelog_1082_li
#Faster data conversion from BIGINT or INT to DECIMAL.
@changelog_1082_li
@changelog_1083_li
#Server-less multi-connection mode: try to delete log files if switching between read/write operations.
@changelog_1083_li
@changelog_1084_li
#CompressLZF: Faster decompress and improved javadocs
@changelog_1084_h2
@changelog_1085_h2
#Version 1.2.126 (2009-12-18)
@changelog_1085_li
@changelog_1086_li
#The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
@changelog_1086_li
@changelog_1087_li
#CSVREAD: when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
@changelog_1087_li
@changelog_1088_li
#Optimization index conditions of the form 'column=NULL' (which is always false; unlike 'column IS NULL').
@changelog_1088_li
@changelog_1089_li
#Script command and tool: the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
@changelog_1089_li
@changelog_1090_li
#Statements with IN(SELECT..) conditions could produce the wrong result. Example: index on id, name; query: select * from test where id between 1 and 3 and name in (select 'World').
@changelog_1090_li
@changelog_1091_li
#Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example: index on id; index on name; query: select * from (select * from test) where id=1 and name in('a', 'b'). select * from (select * from test) where id=1 and name in('Hello', 'World').
@changelog_1091_li
@changelog_1092_li
#Page store: a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
@changelog_1092_li
@changelog_1093_li
#JaQu: the decompiler has been improved, and a few test cases already work. It is still incomplete however.
@changelog_1093_li
@changelog_1094_li
#LIKE: any letter is now allowed after the escape character (which is still '\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
@changelog_1094_li
@changelog_1095_li
#The reserve heap memory is no longer used.
@changelog_1095_li
@changelog_1096_li
#Database.checkpoint() could throw a NullPointerException.
@changelog_1096_h2
@changelog_1097_h2
#Version 1.2.125 (2009-12-06)
@changelog_1097_li
@changelog_1098_li
#Lucene fulltext search: the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
@changelog_1098_li
@changelog_1099_li
#The shell tool now has a very simple statement history.
@changelog_1099_li
@changelog_1100_li
#The zip file system implementation now supports the '~' home directory prefix. Example database URL: jdbc:h2:zip:~/test.zip!/test
@changelog_1100_li
@changelog_1101_li
#Right outer joins on tables that were already 'inner joined' was processed incorrectly.
@changelog_1101_li
@changelog_1102_li
#Temporary files from LOB objects were not deleted early enough when using the server mode.
@changelog_1102_li
@changelog_1103_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.
@changelog_1103_li
@changelog_1104_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.
@changelog_1104_li
@changelog_1105_li
#Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
@changelog_1105_li
@changelog_1106_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.
@changelog_1106_li
@changelog_1107_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').
@changelog_1107_li
@changelog_1108_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).
@changelog_1108_li
@changelog_1109_li
#The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot!
@changelog_1109_li
@changelog_1110_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.
@changelog_1110_li
@changelog_1111_li
#The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
@changelog_1111_li
@changelog_1112_li
#More bugs in the server-less multi-connection mode have been fixed.
@changelog_1112_li
@changelog_1113_li
#When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
@changelog_1113_li
@changelog_1114_li
#JdbcConnectionPool.getConnection() could throw a NullPointerException.
@changelog_1114_li
@changelog_1115_li
#User defined functions: the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
@changelog_1115_li
@changelog_1116_li
#User defined functions with source code didn't work after re-opening the database.
@changelog_1116_li
@changelog_1117_li
#The newsfeeds are now Atom 1.0 standard compliant.
@changelog_1117_li
@changelog_1118_li
#The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
@changelog_1118_li
@changelog_1119_li
#Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
@changelog_1119_li
@changelog_1120_li
#Drop table did not delete lob files in old file store (not PAGE_STORE).
@changelog_1120_h2
@changelog_1121_h2
#Version 1.2.124 (2009-11-20)
@changelog_1121_li
@changelog_1122_li
#Clustering: there is now a way to detect which cluster instances are running.
@changelog_1122_li
@changelog_1123_li
#ConvertTraceFile: the SQL statement statistics are better formatted (newline are removed).
@changelog_1123_li
@changelog_1124_li
#The file lock thread is now stopped when the database is closed.
@changelog_1124_li
@changelog_1125_li
#Issue 140: the Script tool now supports writing to a stream.
@changelog_1125_li
@changelog_1126_li
#Issue 138: the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
@changelog_1126_li
@changelog_1127_li
#Page store: new databases can not be opened with older versions.
@changelog_1127_li
@changelog_1128_li
#Page store: multi-column indexes didn't work if the cache was very small.
@changelog_1128_li
@changelog_1129_li
#Page store: opening a database could theoretically result in an endless loop.
@changelog_1129_li
@changelog_1130_li
#Page store: adding large indexed columns could get very slow.
@changelog_1130_li
@changelog_1131_li
#Page store: after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
@changelog_1131_li
@changelog_1132_li
#Page store: the recover tool sometimes generated a script file that contained duplicate data.
@changelog_1132_li
@changelog_1133_li
#Page store: sometimes opening a read-only database failed.
@changelog_1133_li
@changelog_1134_li
#Page store: opening a database sometimes failed if large rows where updated, or if a table was truncated before.
@changelog_1134_li
@changelog_1135_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_1135_li
@changelog_1136_li
#Page store: getting the min value from a descending index with NULL entries could return the wrong result.
@changelog_1136_li
@changelog_1137_li
#Page store: improved auto-recovery after power failure.
@changelog_1137_li
@changelog_1138_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_1138_li
@changelog_1139_li
#User defined functions can be created with source code. Example: CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
@changelog_1139_li
@changelog_1140_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_1140_li
@changelog_1141_li
#Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
@changelog_1141_li
@changelog_1142_li
#Issue 117: Multi-version concurrency: concurrent MERGE statements now work.
@changelog_1142_li
@changelog_1143_li
#Improved read-only database detection.
@changelog_1143_h2
@changelog_1144_h2
#Version 1.2.123 (2009-11-08)
@changelog_1144_li
@changelog_1145_li
#Page store: new databases can not be opened with older versions.
@changelog_1145_li
@changelog_1146_li
#Page store: updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
@changelog_1146_li
@changelog_1147_li
#Page store: inserting very large rows failed with ArrayIndexOutOfBoundsException.
@changelog_1147_li
@changelog_1148_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_1148_li
@changelog_1149_li
#The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
@changelog_1149_li
@changelog_1150_li
#The Lucene fulltext search now also returns the score.
@changelog_1150_li
@changelog_1151_li
# New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
@changelog_1151_li
@changelog_1152_li
#Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
@changelog_1152_li
@changelog_1153_li
#Improved error messages: identifiers and values are now quoted.
@changelog_1153_li
@changelog_1154_li
#Improved error message when casting a value failed: the column name and type is included in the message.
@changelog_1154_li
@changelog_1155_li
#Improved support for GAE for Java thanks to Vince Bonfanti.
@changelog_1155_h2
@changelog_1156_h2
#Version 1.2.122 (2009-10-28)
@changelog_1156_li
@changelog_1157_li
#The native fulltext search now supports streaming CLOB data.
@changelog_1157_li
@changelog_1158_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_1158_li
@changelog_1159_li
#Dropping the current user is now allowed if another admin user exists.
@changelog_1159_li
@changelog_1160_li
#Values of type BINARY or BLOB could not be converted to the data type OTHER.
@changelog_1160_li
@changelog_1161_li
#SHUTDOWN COMPACT now fully compacts the database.
@changelog_1161_li
@changelog_1162_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_1162_li
@changelog_1163_li
#New sorted insert optimization (see Performance / Database Performance Tuning).
@changelog_1163_li
@changelog_1164_li
#Issue 116: The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
@changelog_1164_li
@changelog_1165_li
#Page store: opening a large database was slow if it was not closed before.
@changelog_1165_li
@changelog_1166_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_1166_li
@changelog_1167_li
#The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
@changelog_1167_li
@changelog_1168_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_1168_li
@changelog_1169_li
#Certain queries were not sorted if subselect queries were involved
@changelog_1169_li
@changelog_1170_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_1170_h2
@changelog_1171_h2
#Version 1.2.121 (2009-10-11)
@changelog_1171_li
@changelog_1172_li
#Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
@changelog_1172_li
@changelog_1173_li
#CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch!
@changelog_1173_li
@changelog_1174_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_1174_li
@changelog_1175_li
#Page store bugs were fixed. Large values in indexed columns could corrupt the index.
@changelog_1175_li
@changelog_1176_li
#The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
@changelog_1176_li
@changelog_1177_li
#New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
@changelog_1177_h2
@changelog_1178_h2
#Version 1.2.120 (2009-10-04)
@changelog_1178_li
@changelog_1179_li
#This is a beta version.
@changelog_1179_li
@changelog_1180_li
#Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
@changelog_1180_li
@changelog_1181_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_1181_li
@changelog_1182_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_1182_li
@changelog_1183_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_1183_li
@changelog_1184_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_1184_li
@changelog_1185_li
#PostgreSQL compatibility: function LASTVAL() as an alias for IDENTITY().
@changelog_1185_li
@changelog_1186_li
#Linked tables now support default values when inserting, updating or merging.
@changelog_1186_li
@changelog_1187_li
#Bugfixes in the page store.
@changelog_1187_li
@changelog_1188_li
#Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
@changelog_1188_li
@changelog_1189_li
#Allow writing to linked tables in readonly databases.
@changelog_1189_h2
@changelog_1190_h2
#Version 1.1.119 (2009-09-26)
@changelog_1190_li
#SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1191_li
#Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
#SQL statements in the exception message are no longer included if they contain '--hide--'.
@changelog_1192_li
#New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
#Temporary local tables did not always work after reconnect if AUTO_SERVER=TRUE
@changelog_1193_li
#New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
#New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
@changelog_1194_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.
#New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
@changelog_1195_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.
#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_1196_li
#ChangeFileEncryption did not work with Lob subdirectories. Fixed.
#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_1197_li
#Issue 121: JaQu: new simple update and merge methods.
#ChangeFileEncryption did not work with Lob subdirectories. Fixed.
@changelog_1198_li
#Issue 120: JaQu didn't close result sets.
#Issue 121: JaQu: new simple update and merge methods.
@changelog_1199_li
#Issue 119: JaQu creates wrong WHERE conditions on some inputs.
#Issue 120: JaQu didn't close result sets.
@changelog_1200_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.
#Issue 119: JaQu creates wrong WHERE conditions on some inputs.
@changelog_1201_li
#SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
#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_1202_li
#The Recover tool now also processes the log files, however applying those changes is still a manual process.
#SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
@changelog_1203_li
#New sample application that shows how to pass data to a trigger.
#The Recover tool now also processes the log files, however applying those changes is still a manual process.
@changelog_1204_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.
#New sample application that shows how to pass data to a trigger.
@changelog_1205_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().
#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_1206_li
#Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
#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_1207_li
#Statement.getConnection() threw an exception if the connection was already closed.
#Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
@changelog_1208_li
#The native fulltext index kept a reference to a database after the database was closed.
#Statement.getConnection() threw an exception if the connection was already closed.
@changelog_1209_li
#Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
#The native fulltext index kept a reference to a database after the database was closed.
@changelog_1210_li
#Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1211_li
#The optimizer does a better job for joins if indexes are missing.
@changelog_1211_h2
@changelog_1212_h2
#Version 1.1.118 (2009-09-04)
@changelog_1212_li
@changelog_1213_li
#SHOW COLUMNS only listed indexed columns.
@changelog_1213_li
@changelog_1214_li
#When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
@changelog_1214_li
@changelog_1215_li
#DatabaseMetaData.getPrimaryKeys: the wrong constraint name was reported if there was another constraint on the same table and columns.
@changelog_1215_li
@changelog_1216_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_1216_li
@changelog_1217_li
#Native fulltext search: before searching, FT_INIT() had to be called. This is no longer required.
@changelog_1217_li
@changelog_1218_li
#Better support GaeVFS (Google App Engine Virtual File System).
@changelog_1218_li
@changelog_1219_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_1219_li
@changelog_1220_li
#Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1220_li
@changelog_1221_li
#PreparedStatement.setObject now converts a java.lang.Character to a string.
@changelog_1221_li
@changelog_1222_li
#H2 Console: PierPaolo Ucchino has completed the Italian translation. Thanks a lot!
@changelog_1222_li
@changelog_1223_li
#Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
@changelog_1223_li
@changelog_1224_li
#H2 Console: indexes of tables of non-default schemas are now also listed.
@changelog_1224_li
@changelog_1225_li
#Issue 111: Multi-version concurrency / duplicate primary key after rollback.
@changelog_1225_li
@changelog_1226_li
#Issue 110: Multi-version concurrency / wrong exception is thrown.
@changelog_1226_li
@changelog_1227_li
#Parser: sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
@changelog_1227_li
@changelog_1228_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_1228_li
@changelog_1229_li
#The stack trace of very common exceptions is no longer written to the .trace.db file by default.
@changelog_1229_li
@changelog_1230_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_1230_li
@changelog_1231_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_1231_h2
@changelog_1232_h2
#Version 1.1.117 (2009-08-09)
@changelog_1232_li
@changelog_1233_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_1233_li
@changelog_1234_li
#JaQu: the order of the fields in the database no longer needs to match the order in the database.
@changelog_1234_li
@changelog_1235_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_1235_li
@changelog_1236_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_1236_li
@changelog_1237_li
#Views using functions were not re-evaluated when necessary.
@changelog_1237_li
@changelog_1238_li
#Improved MySQL compatibility for SHOW COLUMNS.
@changelog_1238_li
@changelog_1239_li
#Improved PostgreSQL compatibility for timestamp literals with timezone.
@changelog_1239_li
@changelog_1240_li
#Sergi Vladykin translated the error messages to Russian. Thanks a lot!
@changelog_1240_li
@changelog_1241_li
#Support for Java 6 DatabaseMetaData.getTables, getColumns, getProcedures, and getProcedureColumns.
@changelog_1241_li
@changelog_1242_li
#Issue 101: Rollback of a large transaction (more than 100000 rows) could fail.
@changelog_1242_li
@changelog_1243_li
#Various bugfixes and improvements in the page store mechanism (still experimental).
@changelog_1243_li
@changelog_1244_li
#The functions LENGTH, OCTET_LENGTH, and BIT_LENGTH now return BIGINT.
@changelog_1244_li
@changelog_1245_li
#Data types CLOB and BLOB: the maximum precision was Integer.MAX_VALUE, it is now Long.MAX_VALUE.
@changelog_1245_li
@changelog_1246_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_1246_li
@changelog_1247_li
#Parsing SQL script files is now faster.
@changelog_1247_li
@changelog_1248_li
#CSV reading is now faster.
@changelog_1248_li
@changelog_1249_li
#SimpleResultSet.newInstance(SimpleRowSource rs) did not work.
@changelog_1249_h2
@changelog_1250_h2
#Version 1.1.116 (2009-07-18)
@changelog_1250_li
@changelog_1251_li
#Server-less multi-connection mode: more bugs are fixed.
@changelog_1251_li
@changelog_1252_li
#The built-in help (INFORMATION_SCHEMA.HELP) is smaller, shrinking the jar file size a bit.
@changelog_1252_li
@changelog_1253_li
#H2 Console: column of tables of non-default schemas are now also listed, except for schemas starting with 'INFO'.
@changelog_1253_li
@changelog_1254_li
#ALTER TABLE: removing an auto-increment or identity column didn't remove the sequence.
@changelog_1254_li
@changelog_1255_li
#Creating indexes is now a bit faster.
@changelog_1255_li
@changelog_1256_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_1256_li
@changelog_1257_li
#PG Server: improved compatibility by using the type ids of the PostgreSQL driver. Thanks a lot to Sergi Vladykin for the patch!
@changelog_1257_li
@changelog_1258_li
#H2 Console: Oracle system tables are no longer listed, improving performance.
@changelog_1258_li
@changelog_1259_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_1259_li
@changelog_1260_li
#New system property h2.defaultResultSetConcurrency to change the default result set concurrency.
@changelog_1260_li
@changelog_1261_li
#JDBC: using an invalid result set type or concurrency now throws an exception.
@changelog_1261_li
@changelog_1262_li
#If a pooled connection was not closed but garbage collected, a NullPointerException could occur.
@changelog_1262_li
@changelog_1263_li
#Fulltext search: a NullPointerException was thrown when updating a value that was NULL previously.
@changelog_1263_li
@changelog_1264_li
#The Recover tool did not work with .data.db files of the wrong size.
@changelog_1264_li
@changelog_1265_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_1265_li
@changelog_1266_li
#The soft-references cache (CACHE_TYPE=SOFT_LRU) could throw a NullPointerException.
@changelog_1266_li
@changelog_1267_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_1267_h2
@changelog_1268_h2
#Version 1.1.115 (2009-06-21)
@changelog_1268_li
@changelog_1269_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_1269_li
@changelog_1270_li
#ALTER TABLE could throw an exception "object already exists" in some cases.
@changelog_1270_li
@changelog_1271_li
#Views: in some situations, an ArrayIndexOutOfBoundsException was thrown when using the same view concurrently.
@changelog_1271_li
@changelog_1272_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_1272_li
@changelog_1273_li
#H2 Console: the language was reset to the browser language when disconnecting.
@changelog_1273_li
@changelog_1274_li
#H2 Console: improved Polish translation.
@changelog_1274_li
@changelog_1275_li
#Server-less multi-connection mode: more bugs are fixed.
@changelog_1275_li
@changelog_1276_li
#The download page now included the SHA1 checksums.
@changelog_1276_li
@changelog_1277_li
#Shell tool: the file encoding workaround is now documented if you run java org.h2.tools.Shell -?.
@changelog_1277_li
@changelog_1278_li
#The RunScript tool and SQL statement did not work with the compression method LZF.
@changelog_1278_li
@changelog_1279_li
#Fulltext search: searching for NULL or an empty string threw an exception.
@changelog_1279_li
@changelog_1280_li
#Lucene fulltext search: FTL_DROP_ALL did not drop the triggers.
@changelog_1280_li
@changelog_1281_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_1281_li
@changelog_1282_li
#Data types: LONG is now an alias for BIGINT.
@changelog_1282_h2
@changelog_1283_h2
#Version 1.1.114 (2009-06-01)
@changelog_1283_li
@changelog_1284_li
#ResultSetMetaData.getColumnClassName returned the wrong class for CLOB and BLOB columns.
@changelog_1284_li
@changelog_1285_li
#Fulltext search: data is no longer deleted and re-inserted if the indexed columns didn't change.
@changelog_1285_li
@changelog_1286_li
#In some situations, an ArrayIndexOutOfBoundsException was thrown when adding rows. This was caused by a bug in the b-tree code.
@changelog_1286_li
@changelog_1287_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_1287_li
@changelog_1288_li
#The Recover tool did not always work when the database contains referential integrity constraints.
@changelog_1288_li
@changelog_1289_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_1289_h2
@changelog_1290_h2
#Version 1.1.113 (2009-05-21)
@changelog_1290_li
@changelog_1291_li
#Shell tool: the built-in commands EXIT, HELP, ?, LIST, and so on didn't work with a semicolon at the end.
@changelog_1291_li
@changelog_1292_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_1292_li
@changelog_1293_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_1293_li
@changelog_1294_li
#Identifiers with a digit and then a dollar sign didn't work. Example: A1$B.
@changelog_1294_li
@changelog_1295_li
#MS SQL Server compatibility: support for linked tables with NVARCHAR, NCHAR, NCLOB, and LONGNVARCHAR.
@changelog_1295_li
@changelog_1296_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_1296_li
@changelog_1297_li
#Calling execute() or prepareStatement() with null as the SQL statement now throws an exception.
@changelog_1297_li
@changelog_1298_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_1298_li
@changelog_1299_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_1299_li
@changelog_1300_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_1300_h2
@changelog_1301_h2
#Version 1.1.112 (2009-05-01)
@changelog_1301_li
@changelog_1302_li
#JdbcPreparedStatement.toString() could throw a NullPointerException.
#Connection pool: the default login timeout is now 5 minutes.
@changelog_1304_li
@changelog_1305_li
#After truncating tables, opening large databases could become slow because indexes were always re-built unnecessarily when opening.
@changelog_1305_li
@changelog_1306_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_1306_li
@changelog_1307_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_1307_li
@changelog_1308_li
#Improved error message when the .lock.db file modification time is in the future.
@changelog_1308_li
@changelog_1309_li
#The MERGE statement now returns 0 as the generated key if the row was updated.
@changelog_1309_li
@changelog_1310_li
#Running code coverage is now automated.
@changelog_1310_li
@changelog_1311_li
#A file system implementation can now be registered using FileSystem.register.
@changelog_1311_li
@changelog_1312_li
#The database file system is no longer included in the jar file, it moved to the test section.
@changelog_1312_h2
@changelog_1313_h2
#Version 1.1.111 (2009-04-10)
@changelog_1313_li
@changelog_1314_li
#In-memory databases can now run inside the Google App Engine.
@changelog_1314_li
@changelog_1315_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_1315_li
@changelog_1316_li
#The wrong exception was thrown when using unquoted text for the SQL statements COMMENT, ALTER USER, and SET PASSWORD.
@changelog_1316_li
@changelog_1317_li
#The built-in connection pool did not roll back transactions and enable autocommit enabled after closing a connection.
@changelog_1317_li
@changelog_1318_li
#Sometimes a StackOverflow occurred when checking for deadlock. See also http://code.google.com/p/h2database/issues/detail?id=61
@changelog_1318_li
@changelog_1319_li
#The Shell tool no longer truncates results with only one column, and displays a message if data was truncated.
@changelog_1319_h2
@changelog_1320_h2
#Version 1.1.110 (2009-04-03)
@changelog_1320_li
@changelog_1321_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_1321_li
@changelog_1322_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_1322_li
@changelog_1323_li
#The data type of a SUBSTRING method was wrong.
@changelog_1323_li
@changelog_1324_li
#ResultSet.findColumn and get methods with column label parameters now also check for matching column names (like most databases except MySQL).
@changelog_1324_li
@changelog_1325_li
#H2 Console: the browser system property now supports a list of arguments. Example: java -Dh2.browser="open,-a,Safari,%url" ...
@changelog_1325_li
@changelog_1326_li
#Improved Javadoc navigation (similar to Scaladoc).
@changelog_1326_li
@changelog_1327_li
#H2 Console: auto-complete of identifiers did not work correctly for H2 databases in MySQL mode.
@changelog_1327_li
@changelog_1328_li
#DISTINCT and GROUP BY on a CLOB column was broken.
@changelog_1328_li
@changelog_1329_li
#The FTP server moved to the tools section and is no longer included in the h2*.jar file.
@changelog_1329_li
@changelog_1330_li
#Improved error message for unsupported features: now the message says what exactly is not supported.
@changelog_1330_li
@changelog_1331_li
#Improved OSGi support.
@changelog_1331_li
@changelog_1332_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_1332_li
@changelog_1333_li
#The API of the tools changed a bit (each tool now returns an exit code).
@changelog_1333_li
@changelog_1334_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_1334_li
@changelog_1335_li
#CREATE TABLE: improved compatibility (support for UNIQUE NOT NULL).
@changelog_1335_li
@changelog_1336_li
#DatabaseMetaData.getSQLKeywords now returns the correct list.
@changelog_1336_li
@changelog_1337_li
#Deterministic user defined functions did not work when the parameter was a column. Fixed.
@changelog_1337_li
@changelog_1338_li
#JdbcConnectionPool.setLoginTimeout with 0 now uses the default timeout.
@changelog_1338_li
@changelog_1339_li
#Creating a JdbcConnectionPool has been simplified a bit.
@changelog_1339_li
@changelog_1340_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_1340_li
@changelog_1341_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_1341_li
@changelog_1342_li
#Linked tables to SQLite database can now be created.
@changelog_1342_li
@changelog_1343_li
#Nested IN(IN(...)) didn't work.
@changelog_1343_li
@changelog_1344_li
#NIO storage: the nio: prefix was using memory mapped files instead of FileChannel.
@changelog_1344_h2
@changelog_1345_h2
#Version 1.1.109 (2009-03-14)
@changelog_1345_li
@changelog_1346_li
#The optimization for IN(...) is now only used if comparing a column with an index.
@changelog_1346_li
@changelog_1347_li
#User defined functions can now be deterministic (see CREATE ALIAS documentation).
@changelog_1347_li
@changelog_1348_li
#Multiple nested queries in the FROM clause with parameters did not always work.
@changelog_1348_li
@changelog_1349_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_1349_li
@changelog_1350_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_1350_li
@changelog_1351_li
#The functions BITOR, BITAND, BITXOR, and MOD now accept and return BIGINT instead of INT.
@changelog_1351_li
@changelog_1352_li
#Could not use the same linked table multiple times in the same query.
@changelog_1352_li
@changelog_1353_li
#Bugs in the server-less multi-connection mode have been fixed.
@changelog_1353_li
@changelog_1354_li
#Column names could not be named "UNIQUE" (with the quotes).
@changelog_1354_li
@changelog_1355_li
#New system function TRANSACTION_ID() to get the current transaction identifier for a session.
@@ -467,358 +467,359 @@ build_1096_p=\ To generate railroad diagrams for other grammars, see the package
changelog_1000_h1=Change Log
changelog_1001_h2=Next Version (unreleased)
changelog_1002_li=EXPLAIN\:The query plan now contains ".tableScan" if a table scan is used.
changelog_1003_li=The index was not used if there were multiple IN(..) conditions.
changelog_1004_li=For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
changelog_1005_li=PostgreSQL compatibility\:when using the following exception was thrown\:Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
changelog_1006_li=A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
changelog_1007_li=When using temporary table, the database didn't shrink sometimes when closing.
changelog_1008_li=Large transactions could run out of heap space. Fixed.
changelog_1009_li=The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
changelog_1010_li=Creating a database was delayed about 2 seconds if the directory didn't exist.
changelog_1011_li=Implemented INIT feature. If the database URL contains ";INIT\=...;" then the DDL or DML commands following are executed on startup. Example URL\:jdbc\:h2\:mem\:test;INIT\=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
changelog_1012_h2=Version 1.2.129 (2010-02-19)
changelog_1013_li=The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
changelog_1014_li=CREATE ALIAS\:error message when compiling Java code have been improved.
changelog_1015_li=MVCC\:creating a table with an incorrect constraint could cause strange errors.
changelog_1016_li=Hash indexes now are only used for single column indexes.
changelog_1017_li=The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
changelog_1018_li=The file system abstraction no longer throws SQL exceptions.
changelog_1019_li=DatabaseEventListener.diskSpaceIsLow has changed.
changelog_1020_li=The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
changelog_1021_li=SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
changelog_1022_li=When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
changelog_1023_li=The BNF parser now uses the visitor pattern.
changelog_1024_li=Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
changelog_1025_li=The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
changelog_1026_li=H2 Console\:asynchronous login (using a DatabaseEventListener) is no longer supported.
changelog_1027_li=A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
changelog_1028_li=The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
changelog_1029_li=Tools\:the method run(String... args) has been renamed to runTool(String... args).
changelog_1030_li=Server.startWebServer(Connection) was not working as expected.
changelog_1031_li=The database URL option ACCESS_MODE_LOG is no longer supported.
changelog_1032_li=The database URL option RECOVER has currently no effect.
changelog_1033_li=Converting an old (non-page store) database is no longer supported using this version.
changelog_1034_li=The following system properties are no longer supported\:h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
changelog_1035_li=The setting LOG has currently no effect (it only had an effect when the page store was disabled).
changelog_1036_li=Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
changelog_1037_li=The translated resources are now stored in UTF-8 format.
changelog_1038_li=The Windows service wrapper now detects if multiple versions of H2 are installed.
changelog_1039_h2=Version 1.2.128 (2010-01-30)
changelog_1040_li=There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http\://code.google.com/p/h2database/issues/detail?id\=158
changelog_1041_li=The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
changelog_1042_li=Automatic conversion of old databases to the page store format failed if the database contained LOB files.
changelog_1043_li=Nested subqueries didn't work for INSERT INTO and IN(..). Example\:insert into test ((select 1));
changelog_1044_li=If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
changelog_1045_li=Less classes are loaded when using the database in embedded mode.
changelog_1046_li=The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
changelog_1047_li=Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example\:select count(*) from (select 1 union (select 2 intersect select 2)) x;
changelog_1048_li=Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
changelog_1049_li=Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
changelog_1050_li=Documentation\:the javadocs for Csv.write and read used the wrong default charset.
changelog_1051_li=MVCC\:if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
changelog_1052_li=If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
changelog_1053_li=Triggers\:INSTEAD OF triggers are now supported. Such triggers can be defined on views.
changelog_1054_li=New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
changelog_1055_li=Slightly improved performance if the table is already locked.
changelog_1057_li=PgServer\:the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
changelog_1058_li=Serialized access mode (server-less multi-connection mode)\:fixed getGeneratedKeys() for sequences.
changelog_1059_h2=Version 1.2.127 (2010-01-15)
changelog_1060_li=Serialized access mode (server-less multi-connection mode)\:sequences did not work as expected (there were gaps in generated values when using multiple connections).
changelog_1061_li=Page store\:new databases can not be opened with older versions.
changelog_1062_li=Page store\:adding data to new database is now faster.
changelog_1063_li=File system\:getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
changelog_1064_li=PgServer\:incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches\!
changelog_1065_li=SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
changelog_1066_li=Page store\:the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
changelog_1067_li=Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
changelog_1068_li=If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
changelog_1069_li=Alter table is now supported even if a table has views defined.
changelog_1070_li=Fulltext search\:exceptions within the fulltext search package had the wrong SQL state.
changelog_1071_li=The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
changelog_1072_li=Trigger can now be called on rollback.
changelog_1073_li=The shell script h2.sh ignored command line line arguments.
changelog_1074_li=When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
changelog_1075_li=The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
changelog_1076_li=Native fulltext search\:before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
changelog_1077_li=The .trace.db file is now only created if required.
changelog_1079_li=Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
changelog_1080_li=H2 Console\:data that is too long is now abbreviated as follows\:text... (100000 characters). A large binary is abbreviated as follows\:abcdef... (100000 bytes).
changelog_1081_li=Faster data conversion from BIGINT or INT to DECIMAL.
changelog_1082_li=Server-less multi-connection mode\:try to delete log files if switching between read/write operations.
changelog_1083_li=CompressLZF\:Faster decompress and improved javadocs
changelog_1084_h2=Version 1.2.126 (2009-12-18)
changelog_1085_li=The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
changelog_1086_li=CSVREAD\:when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
changelog_1087_li=Optimization index conditions of the form 'column\=NULL' (which is always false; unlike 'column IS NULL').
changelog_1088_li=Script command and tool\:the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
changelog_1089_li=Statements with IN(SELECT..) conditions could produce the wrong result. Example\:index on id, name; query\:select * from test where id between 1 and 3 and name in (select 'World').
changelog_1090_li=Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example\:index on id; index on name; query\:select * from (select * from test) where id\=1 and name in('a', 'b'). select * from (select * from test) where id\=1 and name in('Hello', 'World').
changelog_1091_li=Page store\:a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
changelog_1092_li=JaQu\:the decompiler has been improved, and a few test cases already work. It is still incomplete however.
changelog_1093_li=LIKE\:any letter is now allowed after the escape character (which is still '\\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
changelog_1094_li=The reserve heap memory is no longer used.
changelog_1095_li=Database.checkpoint() could throw a NullPointerException.
changelog_1096_h2=Version 1.2.125 (2009-12-06)
changelog_1097_li=Lucene fulltext search\:the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
changelog_1098_li=The shell tool now has a very simple statement history.
changelog_1099_li=The zip file system implementation now supports the '~' home directory prefix. Example database URL\:jdbc\:h2\:zip\:~/test.zip\!/test
changelog_1100_li=Right outer joins on tables that were already 'inner joined' was processed incorrectly.
changelog_1101_li=Temporary files from LOB objects were not deleted early enough when using the server mode.
changelog_1102_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.
changelog_1103_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.
changelog_1104_li=Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
changelog_1105_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.
changelog_1106_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').
changelog_1107_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).
changelog_1108_li=The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot\!
changelog_1109_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.
changelog_1110_li=The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
changelog_1111_li=More bugs in the server-less multi-connection mode have been fixed.
changelog_1112_li=When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
changelog_1113_li=JdbcConnectionPool.getConnection() could throw a NullPointerException.
changelog_1114_li=User defined functions\:the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
changelog_1115_li=User defined functions with source code didn't work after re-opening the database.
changelog_1116_li=The newsfeeds are now Atom 1.0 standard compliant.
changelog_1117_li=The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
changelog_1118_li=Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
changelog_1119_li=Drop table did not delete lob files in old file store (not PAGE_STORE).
changelog_1120_h2=Version 1.2.124 (2009-11-20)
changelog_1121_li=Clustering\:there is now a way to detect which cluster instances are running.
changelog_1122_li=ConvertTraceFile\:the SQL statement statistics are better formatted (newline are removed).
changelog_1123_li=The file lock thread is now stopped when the database is closed.
changelog_1124_li=Issue 140\:the Script tool now supports writing to a stream.
changelog_1125_li=Issue 138\:the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
changelog_1126_li=Page store\:new databases can not be opened with older versions.
changelog_1127_li=Page store\:multi-column indexes didn't work if the cache was very small.
changelog_1128_li=Page store\:opening a database could theoretically result in an endless loop.
changelog_1129_li=Page store\:adding large indexed columns could get very slow.
changelog_1130_li=Page store\:after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
changelog_1131_li=Page store\:the recover tool sometimes generated a script file that contained duplicate data.
changelog_1132_li=Page store\:sometimes opening a read-only database failed.
changelog_1133_li=Page store\:opening a database sometimes failed if large rows where updated, or if a table was truncated before.
changelog_1134_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_1135_li=Page store\:getting the min value from a descending index with NULL entries could return the wrong result.
changelog_1136_li=Page store\:improved auto-recovery after power failure.
changelog_1137_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_1138_li=User defined functions can be created with source code. Example\:CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
changelog_1139_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_1140_li=Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
changelog_1141_li=Issue 117\:Multi-version concurrency\:concurrent MERGE statements now work.
changelog_1144_li=Page store\:new databases can not be opened with older versions.
changelog_1145_li=Page store\:updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
changelog_1146_li=Page store\:inserting very large rows failed with ArrayIndexOutOfBoundsException.
changelog_1147_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_1148_li=The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
changelog_1149_li=The Lucene fulltext search now also returns the score.
changelog_1150_li=\ New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
changelog_1151_li=Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
changelog_1152_li=Improved error messages\:identifiers and values are now quoted.
changelog_1153_li=Improved error message when casting a value failed\:the column name and type is included in the message.
changelog_1154_li=Improved support for GAE for Java thanks to Vince Bonfanti.
changelog_1155_h2=Version 1.2.122 (2009-10-28)
changelog_1156_li=The native fulltext search now supports streaming CLOB data.
changelog_1157_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_1158_li=Dropping the current user is now allowed if another admin user exists.
changelog_1159_li=Values of type BINARY or BLOB could not be converted to the data type OTHER.
changelog_1160_li=SHUTDOWN COMPACT now fully compacts the database.
changelog_1161_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_1162_li=New sorted insert optimization (see Performance / Database Performance Tuning).
changelog_1163_li=Issue 116\:The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
changelog_1164_li=Page store\:opening a large database was slow if it was not closed before.
changelog_1165_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_1166_li=The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
changelog_1167_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_1168_li=Certain queries were not sorted if subselect queries were involved
changelog_1169_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_1170_h2=Version 1.2.121 (2009-10-11)
changelog_1171_li=Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
changelog_1172_li=CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch\!
changelog_1173_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_1174_li=Page store bugs were fixed. Large values in indexed columns could corrupt the index.
changelog_1175_li=The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
changelog_1176_li=New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
changelog_1177_h2=Version 1.2.120 (2009-10-04)
changelog_1178_li=This is a beta version.
changelog_1179_li=Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
changelog_1180_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_1181_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_1182_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_1183_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_1184_li=PostgreSQL compatibility\:function LASTVAL() as an alias for IDENTITY().
changelog_1185_li=Linked tables now support default values when inserting, updating or merging.
changelog_1186_li=Bugfixes in the page store.
changelog_1187_li=Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
changelog_1188_li=Allow writing to linked tables in readonly databases.
changelog_1189_h2=Version 1.1.119 (2009-09-26)
changelog_1190_li=SQL statements in the exception message are no longer included if they contain '--hide--'.
changelog_1191_li=Temporary local tables did not always work after reconnect if AUTO_SERVER\=TRUE
changelog_1192_li=New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
changelog_1193_li=New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
changelog_1194_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_1195_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_1196_li=ChangeFileEncryption did not work with Lob subdirectories. Fixed.
changelog_1197_li=Issue 121\:JaQu\:new simple update and merge methods.
changelog_1198_li=Issue 120\:JaQu didn't close result sets.
changelog_1199_li=Issue 119\:JaQu creates wrong WHERE conditions on some inputs.
changelog_1200_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_1201_li=SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
changelog_1202_li=The Recover tool now also processes the log files, however applying those changes is still a manual process.
changelog_1203_li=New sample application that shows how to pass data to a trigger.
changelog_1204_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_1205_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_1206_li=Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
changelog_1207_li=Statement.getConnection() threw an exception if the connection was already closed.
changelog_1208_li=The native fulltext index kept a reference to a database after the database was closed.
changelog_1209_li=Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch\!
changelog_1210_li=The optimizer does a better job for joins if indexes are missing.
changelog_1211_h2=Version 1.1.118 (2009-09-04)
changelog_1212_li=SHOW COLUMNS only listed indexed columns.
changelog_1213_li=When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
changelog_1214_li=DatabaseMetaData.getPrimaryKeys\:the wrong constraint name was reported if there was another constraint on the same table and columns.
changelog_1215_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_1216_li=Native fulltext search\:before searching, FT_INIT() had to be called. This is no longer required.
changelog_1217_li=Better support GaeVFS (Google App Engine Virtual File System).
changelog_1218_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_1219_li=Various bugfixes and improvements in the page store mechanism (still experimental).
changelog_1220_li=PreparedStatement.setObject now converts a java.lang.Character to a string.
changelog_1221_li=H2 Console\:PierPaolo Ucchino has completed the Italian translation. Thanks a lot\!
changelog_1222_li=Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
changelog_1223_li=H2 Console\:indexes of tables of non-default schemas are now also listed.
changelog_1224_li=Issue 111\:Multi-version concurrency / duplicate primary key after rollback.
changelog_1225_li=Issue 110\:Multi-version concurrency / wrong exception is thrown.
changelog_1226_li=Parser\:sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
changelog_1227_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_1228_li=The stack trace of very common exceptions is no longer written to the .trace.db file by default.
changelog_1229_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_1230_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_1231_h2=Version 1.1.117 (2009-08-09)
changelog_1232_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_1233_li=JaQu\:the order of the fields in the database no longer needs to match the order in the database.
changelog_1234_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_1235_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_1236_li=Views using functions were not re-evaluated when necessary.
changelog_1237_li=Improved MySQL compatibility for SHOW COLUMNS.
changelog_1238_li=Improved PostgreSQL compatibility for timestamp literals with timezone.
changelog_1239_li=Sergi Vladykin translated the error messages to Russian. Thanks a lot\!
changelog_1240_li=Support for Java 6 DatabaseMetaData.getTables, getColumns, getProcedures, and getProcedureColumns.
changelog_1241_li=Issue 101\:Rollback of a large transaction (more than 100000 rows) could fail.
changelog_1242_li=Various bugfixes and improvements in the page store mechanism (still experimental).
changelog_1243_li=The functions LENGTH, OCTET_LENGTH, and BIT_LENGTH now return BIGINT.
changelog_1244_li=Data types CLOB and BLOB\:the maximum precision was Integer.MAX_VALUE, it is now Long.MAX_VALUE.
changelog_1245_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_1246_li=Parsing SQL script files is now faster.
changelog_1247_li=CSV reading is now faster.
changelog_1248_li=SimpleResultSet.newInstance(SimpleRowSource rs) did not work.
changelog_1249_h2=Version 1.1.116 (2009-07-18)
changelog_1250_li=Server-less multi-connection mode\:more bugs are fixed.
changelog_1251_li=The built-in help (INFORMATION_SCHEMA.HELP) is smaller, shrinking the jar file size a bit.
changelog_1252_li=H2 Console\:column of tables of non-default schemas are now also listed, except for schemas starting with 'INFO'.
changelog_1253_li=ALTER TABLE\:removing an auto-increment or identity column didn't remove the sequence.
changelog_1254_li=Creating indexes is now a bit faster.
changelog_1255_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_1256_li=PG Server\:improved compatibility by using the type ids of the PostgreSQL driver. Thanks a lot to Sergi Vladykin for the patch\!
changelog_1257_li=H2 Console\:Oracle system tables are no longer listed, improving performance.
changelog_1258_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_1259_li=New system property h2.defaultResultSetConcurrency to change the default result set concurrency.
changelog_1260_li=JDBC\:using an invalid result set type or concurrency now throws an exception.
changelog_1261_li=If a pooled connection was not closed but garbage collected, a NullPointerException could occur.
changelog_1262_li=Fulltext search\:a NullPointerException was thrown when updating a value that was NULL previously.
changelog_1263_li=The Recover tool did not work with .data.db files of the wrong size.
changelog_1264_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_1265_li=The soft-references cache (CACHE_TYPE\=SOFT_LRU) could throw a NullPointerException.
changelog_1266_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_1267_h2=Version 1.1.115 (2009-06-21)
changelog_1268_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_1269_li=ALTER TABLE could throw an exception "object already exists" in some cases.
changelog_1270_li=Views\:in some situations, an ArrayIndexOutOfBoundsException was thrown when using the same view concurrently.
changelog_1271_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_1272_li=H2 Console\:the language was reset to the browser language when disconnecting.
changelog_1274_li=Server-less multi-connection mode\:more bugs are fixed.
changelog_1275_li=The download page now included the SHA1 checksums.
changelog_1276_li=Shell tool\:the file encoding workaround is now documented if you run java org.h2.tools.Shell -?.
changelog_1277_li=The RunScript tool and SQL statement did not work with the compression method LZF.
changelog_1278_li=Fulltext search\:searching for NULL or an empty string threw an exception.
changelog_1279_li=Lucene fulltext search\:FTL_DROP_ALL did not drop the triggers.
changelog_1280_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_1281_li=Data types\:LONG is now an alias for BIGINT.
changelog_1282_h2=Version 1.1.114 (2009-06-01)
changelog_1283_li=ResultSetMetaData.getColumnClassName returned the wrong class for CLOB and BLOB columns.
changelog_1284_li=Fulltext search\:data is no longer deleted and re-inserted if the indexed columns didn't change.
changelog_1285_li=In some situations, an ArrayIndexOutOfBoundsException was thrown when adding rows. This was caused by a bug in the b-tree code.
changelog_1286_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_1287_li=The Recover tool did not always work when the database contains referential integrity constraints.
changelog_1288_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_1289_h2=Version 1.1.113 (2009-05-21)
changelog_1290_li=Shell tool\:the built-in commands EXIT, HELP, ?, LIST, and so on didn't work with a semicolon at the end.
changelog_1291_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_1292_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_1293_li=Identifiers with a digit and then a dollar sign didn't work. Example\:A1$B.
changelog_1294_li=MS SQL Server compatibility\:support for linked tables with NVARCHAR, NCHAR, NCLOB, and LONGNVARCHAR.
changelog_1295_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_1296_li=Calling execute() or prepareStatement() with null as the SQL statement now throws an exception.
changelog_1297_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_1298_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_1299_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_1300_h2=Version 1.1.112 (2009-05-01)
changelog_1301_li=JdbcPreparedStatement.toString() could throw a NullPointerException.
changelog_1303_li=Connection pool\:the default login timeout is now 5 minutes.
changelog_1304_li=After truncating tables, opening large databases could become slow because indexes were always re-built unnecessarily when opening.
changelog_1305_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_1306_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_1307_li=Improved error message when the .lock.db file modification time is in the future.
changelog_1308_li=The MERGE statement now returns 0 as the generated key if the row was updated.
changelog_1309_li=Running code coverage is now automated.
changelog_1310_li=A file system implementation can now be registered using FileSystem.register.
changelog_1311_li=The database file system is no longer included in the jar file, it moved to the test section.
changelog_1312_h2=Version 1.1.111 (2009-04-10)
changelog_1313_li=In-memory databases can now run inside the Google App Engine.
changelog_1314_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_1315_li=The wrong exception was thrown when using unquoted text for the SQL statements COMMENT, ALTER USER, and SET PASSWORD.
changelog_1316_li=The built-in connection pool did not roll back transactions and enable autocommit enabled after closing a connection.
changelog_1317_li=Sometimes a StackOverflow occurred when checking for deadlock. See also http\://code.google.com/p/h2database/issues/detail?id\=61
changelog_1318_li=The Shell tool no longer truncates results with only one column, and displays a message if data was truncated.
changelog_1319_h2=Version 1.1.110 (2009-04-03)
changelog_1320_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_1321_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_1322_li=The data type of a SUBSTRING method was wrong.
changelog_1323_li=ResultSet.findColumn and get methods with column label parameters now also check for matching column names (like most databases except MySQL).
changelog_1324_li=H2 Console\:the browser system property now supports a list of arguments. Example\:java -Dh2.browser\="open,-a,Safari,%url"...
changelog_1325_li=Improved Javadoc navigation (similar to Scaladoc).
changelog_1326_li=H2 Console\:auto-complete of identifiers did not work correctly for H2 databases in MySQL mode.
changelog_1327_li=DISTINCT and GROUP BY on a CLOB column was broken.
changelog_1328_li=The FTP server moved to the tools section and is no longer included in the h2*.jar file.
changelog_1329_li=Improved error message for unsupported features\:now the message says what exactly is not supported.
changelog_1330_li=Improved OSGi support.
changelog_1331_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_1332_li=The API of the tools changed a bit (each tool now returns an exit code).
changelog_1333_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_1334_li=CREATE TABLE\:improved compatibility (support for UNIQUE NOT NULL).
changelog_1335_li=DatabaseMetaData.getSQLKeywords now returns the correct list.
changelog_1336_li=Deterministic user defined functions did not work when the parameter was a column. Fixed.
changelog_1337_li=JdbcConnectionPool.setLoginTimeout with 0 now uses the default timeout.
changelog_1338_li=Creating a JdbcConnectionPool has been simplified a bit.
changelog_1339_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_1340_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_1341_li=Linked tables to SQLite database can now be created.
changelog_1342_li=Nested IN(IN(...)) didn't work.
changelog_1343_li=NIO storage\:the nio\:prefix was using memory mapped files instead of FileChannel.
changelog_1344_h2=Version 1.1.109 (2009-03-14)
changelog_1345_li=The optimization for IN(...) is now only used if comparing a column with an index.
changelog_1346_li=User defined functions can now be deterministic (see CREATE ALIAS documentation).
changelog_1347_li=Multiple nested queries in the FROM clause with parameters did not always work.
changelog_1348_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_1349_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_1350_li=The functions BITOR, BITAND, BITXOR, and MOD now accept and return BIGINT instead of INT.
changelog_1351_li=Could not use the same linked table multiple times in the same query.
changelog_1352_li=Bugs in the server-less multi-connection mode have been fixed.
changelog_1353_li=Column names could not be named "UNIQUE" (with the quotes).
changelog_1354_li=New system function TRANSACTION_ID() to get the current transaction identifier for a session.
changelog_1003_li=IN(..)\:when combining and IN(..) condition with a condition that didn't use an index, the result could contain duplicate rows.
changelog_1004_li=IN(..)\:the index was not used if there were multiple IN(..) conditions.
changelog_1005_li=For foreign key constraints, the metadata column INFORMATION_SCHEMA.INDEXES.CONSTRAINT_NAME was not set for non-unique indexes.
changelog_1006_li=PostgreSQL compatibility\:when using the following exception was thrown\:Column "T.TYPTYPMOD" not found. Fixed. This is only when using psqlodbc_08_04*.
changelog_1007_li=A tool to migrate an old database from the non-page store format to the newest version has been added in src/tools/org/h2/dev/util/Migrate.java. This file is not included in the jar file currently.
changelog_1008_li=When using temporary table, the database didn't shrink sometimes when closing. Also, sometimes a database could not recover normally.
changelog_1009_li=Large transactions could run out of heap space. Fixed.
changelog_1010_li=The default setting for the system property h2.webMaxValueLength is now 100000 (it was 10000 before).
changelog_1011_li=Creating a database was delayed about 2 seconds if the directory didn't exist.
changelog_1012_li=Implemented INIT feature. If the database URL contains ";INIT\=...;" then the DDL or DML commands following are executed on startup. Example URL\:jdbc\:h2\:mem\:test;INIT\=RUNSCRIPT FROM '~/create.sql' (patch from Kerry Sainsbury).
changelog_1013_h2=Version 1.2.129 (2010-02-19)
changelog_1014_li=The methods of the CloseListener are added to the Trigger interface. The interface CloseListener is removed. This is potentially a breaking change for existing triggers.
changelog_1015_li=CREATE ALIAS\:error message when compiling Java code have been improved.
changelog_1016_li=MVCC\:creating a table with an incorrect constraint could cause strange errors.
changelog_1017_li=Hash indexes now are only used for single column indexes.
changelog_1018_li=The cache types WEAK_* and TQ are no longer supported. A weak reference cache never frees up memory so it's the same as having a very large cache size. The TQ cache was not included in the jar file since a longer time, and was not tested.
changelog_1019_li=The file system abstraction no longer throws SQL exceptions.
changelog_1020_li=DatabaseEventListener.diskSpaceIsLow has changed.
changelog_1021_li=The CompressTool no longer throw as SQL exceptions. Instead, it throws runtime exceptions.
changelog_1022_li=SimpleResultSet.addColumn and addRow now can throw a IllegalStateException instead of a SQLException.
changelog_1023_li=When doing an index lookup, decimal values with the same value but different scale (for example 0.00 and 0.0) where not considered equal in version 1.2.128. Now they are (unlike BigDecimal.equals()).
changelog_1024_li=The BNF parser now uses the visitor pattern.
changelog_1025_li=Converting a UUID to bytes was incorrect. Because of that, updatable result sets on tables with UUID primary key did not work.
changelog_1026_li=The database URL property DATABASE_EVENT_LISTENER_OBJECT is no longer supported (there are problems passing objects when the PostgreSQL driver is installed as well).
changelog_1027_li=H2 Console\:asynchronous login (using a DatabaseEventListener) is no longer supported.
changelog_1028_li=A workaround for a Windows socket problem has been implemented. Thanks a lot to Sergi Vladykin.
changelog_1029_li=The Recover tool did not convert correctly convert CLOB data with non-ASCII characters.
changelog_1030_li=Tools\:the method run(String... args) has been renamed to runTool(String... args).
changelog_1031_li=Server.startWebServer(Connection) was not working as expected.
changelog_1032_li=The database URL option ACCESS_MODE_LOG is no longer supported.
changelog_1033_li=The database URL option RECOVER has currently no effect.
changelog_1034_li=Converting an old (non-page store) database is no longer supported using this version.
changelog_1035_li=The following system properties are no longer supported\:h2.overflowExceptions, h2.optimizeDropDependencies, h2.optimizeGroupSorted, h2.optimizeMinMax, h2.optimizeNot, h2.optimizeIn, h2.optimizeInJoin, h2.reuseSpace*. Most of then were there for a long time, but always with the same value. There was no unit test with the other value. So changing them was potentially dangerous (not a lot, but still).
changelog_1036_li=The setting LOG has currently no effect (it only had an effect when the page store was disabled).
changelog_1037_li=Disabling the page store is no longer supported. The old storage mechanism has been removed, shrinking the jar file size by almost 10%.
changelog_1038_li=The translated resources are now stored in UTF-8 format.
changelog_1039_li=The Windows service wrapper now detects if multiple versions of H2 are installed.
changelog_1040_h2=Version 1.2.128 (2010-01-30)
changelog_1041_li=There are known errors on rollback when the page store is disabled and at the same time MVCC is used. See http\://code.google.com/p/h2database/issues/detail?id\=158
changelog_1042_li=The DeleteDbFiles tool deleted all files in the .lob.db directory, even files that didn't belong to the database.
changelog_1043_li=Automatic conversion of old databases to the page store format failed if the database contained LOB files.
changelog_1044_li=Nested subqueries didn't work for INSERT INTO and IN(..). Example\:insert into test ((select 1));
changelog_1045_li=If the database was already closed using SHUTDOWN IMMEDIATELY, closing a second connection could throw a NullPointerException if there was a local temporary table.
changelog_1046_li=Less classes are loaded when using the database in embedded mode.
changelog_1047_li=The information schema tables are only initialized when needed. This reduces memory usage and speeds up creating in-memory databases. Each in-memory database needs about 8 KB of heap memory.
changelog_1048_li=Nested UNION/INTERSECT queries with brackets could produce the wrong result if used within a subquery. Example\:select count(*) from (select 1 union (select 2 intersect select 2)) x;
changelog_1049_li=Comparing an column against a constant expression with a higher precision or length than the column could give wrong results (the expression was truncated before comparing).
changelog_1050_li=Improved PostgreSQL compatibility (support SHOW DEFAULT_TRANSACTION_ISOLATION).
changelog_1051_li=Documentation\:the javadocs for Csv.write and read used the wrong default charset.
changelog_1052_li=MVCC\:if the table was locked in exclusive mode (such as SELECT ... FOR UPDATE), another session could query the table. This is now longer possible.
changelog_1053_li=If a FOR UPDATE query was executed twice (using a PreparedStatement), the table was not locked.
changelog_1054_li=Triggers\:INSTEAD OF triggers are now supported. Such triggers can be defined on views.
changelog_1055_li=New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive even if they are not quoted.
changelog_1056_li=Slightly improved performance if the table is already locked.
changelog_1058_li=PgServer\:the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
changelog_1059_li=Serialized access mode (server-less multi-connection mode)\:fixed getGeneratedKeys() for sequences.
changelog_1060_h2=Version 1.2.127 (2010-01-15)
changelog_1061_li=Serialized access mode (server-less multi-connection mode)\:sequences did not work as expected (there were gaps in generated values when using multiple connections).
changelog_1062_li=Page store\:new databases can not be opened with older versions.
changelog_1063_li=Page store\:adding data to new database is now faster.
changelog_1064_li=File system\:getting the file name from a path is now faster. This should speed up BLOB and CLOB access.
changelog_1065_li=PgServer\:incorrect SQL types were returned in result set meta data. Concurrently opening a database could fail (PG catalog initialization was not synchronized). Thanks a lot to Sergi Vladykin for providing the patches\!
changelog_1066_li=SHOW COLUMNS did not work correctly if there where multiple indexes on the same columns.
changelog_1067_li=Page store\:the wrong write count was written to the database header. This could cause the server-less multi-connection mode to fail.
changelog_1068_li=Result sets larger than 2 GB threw an exception "Negative seek offset". Fixed.
changelog_1069_li=If the system property h2.check was set to false, an ArrayIndexOutOfBoundsException could occur.
changelog_1070_li=Alter table is now supported even if a table has views defined.
changelog_1071_li=Fulltext search\:exceptions within the fulltext search package had the wrong SQL state.
changelog_1072_li=The Lucene fulltext search ignored transaction rollback. Fixed using a trigger on rollback.
changelog_1073_li=Trigger can now be called on rollback.
changelog_1074_li=The shell script h2.sh ignored command line line arguments.
changelog_1075_li=When running H2 in the Google AppEngine for Java, a AccessControlException could be thrown when trying to open a read-only database. Fixed.
changelog_1076_li=The user home directory prefix (~) is now only expanded when followed by a slash or backslash, or standing alone.
changelog_1077_li=Native fulltext search\:before inserting or deleting data, FT_INIT() had to be called. This is no longer required.
changelog_1078_li=The .trace.db file is now only created if required.
changelog_1080_li=Trying to open a database in read-only mode when a .lock.db file exists will now fail with a nice error message.
changelog_1081_li=H2 Console\:data that is too long is now abbreviated as follows\:text... (100000 characters). A large binary is abbreviated as follows\:abcdef... (100000 bytes).
changelog_1082_li=Faster data conversion from BIGINT or INT to DECIMAL.
changelog_1083_li=Server-less multi-connection mode\:try to delete log files if switching between read/write operations.
changelog_1084_li=CompressLZF\:Faster decompress and improved javadocs
changelog_1085_h2=Version 1.2.126 (2009-12-18)
changelog_1086_li=The ChangeFileEncryption tool will now fail with an exception if the database is still in use. The Backup tool will also fail except when running in quiet mode.
changelog_1087_li=CSVREAD\:when reading the column names from the CSV file, column names that contain no special characters are considered case insensitive now.
changelog_1088_li=Optimization index conditions of the form 'column\=NULL' (which is always false; unlike 'column IS NULL').
changelog_1089_li=Script command and tool\:the primary key constraint is now listed before inserting the data. This will result in a smaller database when using the page store.
changelog_1090_li=Statements with IN(SELECT..) conditions could produce the wrong result. Example\:index on id, name; query\:select * from test where id between 1 and 3 and name in (select 'World').
changelog_1091_li=Statements with IN(..) conditions could produce the wrong result when using views or nested select statements. Example\:index on id; index on name; query\:select * from (select * from test) where id\=1 and name in('a', 'b'). select * from (select * from test) where id\=1 and name in('Hello', 'World').
changelog_1092_li=Page store\:a rollback of a relatively large transaction could fail with an ArrayIndexOutOfBoundsException or a 'row not found' exception in the PageBtreeIndex in some cases.
changelog_1093_li=JaQu\:the decompiler has been improved, and a few test cases already work. It is still incomplete however.
changelog_1094_li=LIKE\:any letter is now allowed after the escape character (which is still '\\' by default). Previously, an exception was thrown (unlike other databases) if it was not the escape character, '_' or '%'. If the escape character appears at the end of the pattern, the result is it is ignored (like PostgreSQL and MS SQL Server).
changelog_1095_li=The reserve heap memory is no longer used.
changelog_1096_li=Database.checkpoint() could throw a NullPointerException.
changelog_1097_h2=Version 1.2.125 (2009-12-06)
changelog_1098_li=Lucene fulltext search\:the Lucene field names now match the table column names, except if the column names start with _ (in which case another _ is prepended). Unfortunately this change means existing fulltext indexes need to be re-built.
changelog_1099_li=The shell tool now has a very simple statement history.
changelog_1100_li=The zip file system implementation now supports the '~' home directory prefix. Example database URL\:jdbc\:h2\:zip\:~/test.zip\!/test
changelog_1101_li=Right outer joins on tables that were already 'inner joined' was processed incorrectly.
changelog_1102_li=Temporary files from LOB objects were not deleted early enough when using the server mode.
changelog_1103_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.
changelog_1104_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.
changelog_1105_li=Trigger that are called before a select statement are now supported. This allows to create tables that work like materialized views.
changelog_1106_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.
changelog_1107_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').
changelog_1108_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).
changelog_1109_li=The compression algorithm "LZF" is now about 33% faster than before when compressing small block (around 2 KB). It is much faster than Deflate, but the compression ratio is lower. Some of the optimizations are from Sam Van Oort, thanks a lot\!
changelog_1110_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.
changelog_1111_li=The test cases don't access the file system directly, this simplifies GAE for Java testing. Thanks to Vince Bonfanti.
changelog_1112_li=More bugs in the server-less multi-connection mode have been fixed.
changelog_1113_li=When running against an old database, the SCRIPT statement could generate a SQL script that contained duplicate indexes (PRIMARY_KEY_E).
changelog_1114_li=JdbcConnectionPool.getConnection() could throw a NullPointerException.
changelog_1115_li=User defined functions\:the source code is now available using SELECT SOURCE FROM INFORMATION_SCHEMA.FUNCTION_ALIASES.
changelog_1116_li=User defined functions with source code didn't work after re-opening the database.
changelog_1117_li=The newsfeeds are now Atom 1.0 standard compliant.
changelog_1118_li=The database is now closed after an out of memory exception, because the database could get corrupt otherwise.
changelog_1119_li=Better error message if both AUTO_SERVER and SERIALIZED parameters are set to TRUE.
changelog_1120_li=Drop table did not delete lob files in old file store (not PAGE_STORE).
changelog_1121_h2=Version 1.2.124 (2009-11-20)
changelog_1122_li=Clustering\:there is now a way to detect which cluster instances are running.
changelog_1123_li=ConvertTraceFile\:the SQL statement statistics are better formatted (newline are removed).
changelog_1124_li=The file lock thread is now stopped when the database is closed.
changelog_1125_li=Issue 140\:the Script tool now supports writing to a stream.
changelog_1126_li=Issue 138\:the trace output of Statement.execute(String, int) and executeUpdate was incorrect.
changelog_1127_li=Page store\:new databases can not be opened with older versions.
changelog_1128_li=Page store\:multi-column indexes didn't work if the cache was very small.
changelog_1129_li=Page store\:opening a database could theoretically result in an endless loop.
changelog_1130_li=Page store\:adding large indexed columns could get very slow.
changelog_1131_li=Page store\:after a duplicate key exception, an ArrayIndexOutOfBoundsException could be thrown (only for very large rows).
changelog_1132_li=Page store\:the recover tool sometimes generated a script file that contained duplicate data.
changelog_1133_li=Page store\:sometimes opening a read-only database failed.
changelog_1134_li=Page store\:opening a database sometimes failed if large rows where updated, or if a table was truncated before.
changelog_1135_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_1136_li=Page store\:getting the min value from a descending index with NULL entries could return the wrong result.
changelog_1137_li=Page store\:improved auto-recovery after power failure.
changelog_1138_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_1139_li=User defined functions can be created with source code. Example\:CREATE ALIAS HI AS 'String hi() { return "Hello"; }'
changelog_1140_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_1141_li=Inserting LOBs got slower each time the process was restarted. It could loop endlessly after about 1000 process restarts.
changelog_1142_li=Issue 117\:Multi-version concurrency\:concurrent MERGE statements now work.
changelog_1145_li=Page store\:new databases can not be opened with older versions.
changelog_1146_li=Page store\:updating large rows (rows with more than 2000 bytes of data) could corrupt the database.
changelog_1147_li=Page store\:inserting very large rows failed with ArrayIndexOutOfBoundsException.
changelog_1148_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_1149_li=The fulltext search methods and fields are now protected instead of private, to make the classes more easily extensible.
changelog_1150_li=The Lucene fulltext search now also returns the score.
changelog_1151_li=\ New function SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger.
changelog_1152_li=Statement.getGeneratedKeys() returned the wrong value if a trigger changed the identity value after inserting the row.
changelog_1153_li=Improved error messages\:identifiers and values are now quoted.
changelog_1154_li=Improved error message when casting a value failed\:the column name and type is included in the message.
changelog_1155_li=Improved support for GAE for Java thanks to Vince Bonfanti.
changelog_1156_h2=Version 1.2.122 (2009-10-28)
changelog_1157_li=The native fulltext search now supports streaming CLOB data.
changelog_1158_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_1159_li=Dropping the current user is now allowed if another admin user exists.
changelog_1160_li=Values of type BINARY or BLOB could not be converted to the data type OTHER.
changelog_1161_li=SHUTDOWN COMPACT now fully compacts the database.
changelog_1162_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_1163_li=New sorted insert optimization (see Performance / Database Performance Tuning).
changelog_1164_li=Issue 116\:The files h2*-sources.jar and h2*-javadoc.jar are now in the Maven repository.
changelog_1165_li=Page store\:opening a large database was slow if it was not closed before.
changelog_1166_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_1167_li=The SQL syntax is documented using (railroad) diagrams. The diagrams are HTML.
changelog_1168_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_1169_li=Certain queries were not sorted if subselect queries were involved
changelog_1170_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_1171_h2=Version 1.2.121 (2009-10-11)
changelog_1172_li=Better support GaeVFS (Google App Engine Virtual File System) thanks to Thanks to Vince Bonfanti.
changelog_1173_li=CSVREAD didn't close the file. Thanks to Vince Bonfanti for the patch\!
changelog_1174_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_1175_li=Page store bugs were fixed. Large values in indexed columns could corrupt the index.
changelog_1176_li=The page store did not work when using Retrotranslator (because the Retrotranslator doesn't support Integer.reverse and Long.reverse).
changelog_1177_li=New system property h2.pageStoreTrim to disable shrinking the database when closing (disabled by default, meaning by default the database is trimmed).
changelog_1178_h2=Version 1.2.120 (2009-10-04)
changelog_1179_li=This is a beta version.
changelog_1180_li=Large updates could throw an ArrayIndexOutOfBoundsException in RowList.writeRow.
changelog_1181_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_1182_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_1183_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_1184_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_1185_li=PostgreSQL compatibility\:function LASTVAL() as an alias for IDENTITY().
changelog_1186_li=Linked tables now support default values when inserting, updating or merging.
changelog_1187_li=Bugfixes in the page store.
changelog_1188_li=Possibility to set a vendor id in Constants.java, so that unofficial builds are distinguishable from official releases.
changelog_1189_li=Allow writing to linked tables in readonly databases.
changelog_1190_h2=Version 1.1.119 (2009-09-26)
changelog_1191_li=SQL statements in the exception message are no longer included if they contain '--hide--'.
changelog_1192_li=Temporary local tables did not always work after reconnect if AUTO_SERVER\=TRUE
changelog_1193_li=New system property h2.defaultMaxLengthInplaceLob to change the default maximum size of an in-place LOB object.
changelog_1194_li=New system property h2.nullConcatIsNull to change the default null concatenation behavior. The default will be enabled in version 1.2.
changelog_1195_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_1196_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_1197_li=ChangeFileEncryption did not work with Lob subdirectories. Fixed.
changelog_1198_li=Issue 121\:JaQu\:new simple update and merge methods.
changelog_1199_li=Issue 120\:JaQu didn't close result sets.
changelog_1200_li=Issue 119\:JaQu creates wrong WHERE conditions on some inputs.
changelog_1201_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_1202_li=SELECT COUNT(*) FROM SYSTEM_RANGE(...) returned the wrong result. Fixed.
changelog_1203_li=The Recover tool now also processes the log files, however applying those changes is still a manual process.
changelog_1204_li=New sample application that shows how to pass data to a trigger.
changelog_1205_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_1206_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_1207_li=Updating many rows with the same CLOB or BLOB values could result in FileNotFoundException.
changelog_1208_li=Statement.getConnection() threw an exception if the connection was already closed.
changelog_1209_li=The native fulltext index kept a reference to a database after the database was closed.
changelog_1210_li=Non-unique in-memory hash indexes are now supported. Thanks a lot to Sergi Vladykin for the patch\!
changelog_1211_li=The optimizer does a better job for joins if indexes are missing.
changelog_1212_h2=Version 1.1.118 (2009-09-04)
changelog_1213_li=SHOW COLUMNS only listed indexed columns.
changelog_1214_li=When calling SHUTDOWN IMMEDIATELY in the server mode, the .trace.db file was not closed.
changelog_1215_li=DatabaseMetaData.getPrimaryKeys\:the wrong constraint name was reported if there was another constraint on the same table and columns.
changelog_1216_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_1217_li=Native fulltext search\:before searching, FT_INIT() had to be called. This is no longer required.
changelog_1218_li=Better support GaeVFS (Google App Engine Virtual File System).
changelog_1219_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_1220_li=Various bugfixes and improvements in the page store mechanism (still experimental).
changelog_1221_li=PreparedStatement.setObject now converts a java.lang.Character to a string.
changelog_1222_li=H2 Console\:PierPaolo Ucchino has completed the Italian translation. Thanks a lot\!
changelog_1223_li=Various tools now use Java 5 var-args, such as main the methods and SimpleResultSet.addRow.
changelog_1224_li=H2 Console\:indexes of tables of non-default schemas are now also listed.
changelog_1225_li=Issue 111\:Multi-version concurrency / duplicate primary key after rollback.
changelog_1226_li=Issue 110\:Multi-version concurrency / wrong exception is thrown.
changelog_1227_li=Parser\:sequenceName.NEXTVAL and CURRVAL did not respect the schema search path.
changelog_1228_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_1229_li=The stack trace of very common exceptions is no longer written to the .trace.db file by default.
changelog_1230_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_1231_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_1232_h2=Version 1.1.117 (2009-08-09)
changelog_1233_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_1234_li=JaQu\:the order of the fields in the database no longer needs to match the order in the database.
changelog_1235_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_1236_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_1237_li=Views using functions were not re-evaluated when necessary.
changelog_1238_li=Improved MySQL compatibility for SHOW COLUMNS.
changelog_1239_li=Improved PostgreSQL compatibility for timestamp literals with timezone.
changelog_1240_li=Sergi Vladykin translated the error messages to Russian. Thanks a lot\!
changelog_1241_li=Support for Java 6 DatabaseMetaData.getTables, getColumns, getProcedures, and getProcedureColumns.
changelog_1242_li=Issue 101\:Rollback of a large transaction (more than 100000 rows) could fail.
changelog_1243_li=Various bugfixes and improvements in the page store mechanism (still experimental).
changelog_1244_li=The functions LENGTH, OCTET_LENGTH, and BIT_LENGTH now return BIGINT.
changelog_1245_li=Data types CLOB and BLOB\:the maximum precision was Integer.MAX_VALUE, it is now Long.MAX_VALUE.
changelog_1246_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_1247_li=Parsing SQL script files is now faster.
changelog_1248_li=CSV reading is now faster.
changelog_1249_li=SimpleResultSet.newInstance(SimpleRowSource rs) did not work.
changelog_1250_h2=Version 1.1.116 (2009-07-18)
changelog_1251_li=Server-less multi-connection mode\:more bugs are fixed.
changelog_1252_li=The built-in help (INFORMATION_SCHEMA.HELP) is smaller, shrinking the jar file size a bit.
changelog_1253_li=H2 Console\:column of tables of non-default schemas are now also listed, except for schemas starting with 'INFO'.
changelog_1254_li=ALTER TABLE\:removing an auto-increment or identity column didn't remove the sequence.
changelog_1255_li=Creating indexes is now a bit faster.
changelog_1256_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_1257_li=PG Server\:improved compatibility by using the type ids of the PostgreSQL driver. Thanks a lot to Sergi Vladykin for the patch\!
changelog_1258_li=H2 Console\:Oracle system tables are no longer listed, improving performance.
changelog_1259_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_1260_li=New system property h2.defaultResultSetConcurrency to change the default result set concurrency.
changelog_1261_li=JDBC\:using an invalid result set type or concurrency now throws an exception.
changelog_1262_li=If a pooled connection was not closed but garbage collected, a NullPointerException could occur.
changelog_1263_li=Fulltext search\:a NullPointerException was thrown when updating a value that was NULL previously.
changelog_1264_li=The Recover tool did not work with .data.db files of the wrong size.
changelog_1265_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_1266_li=The soft-references cache (CACHE_TYPE\=SOFT_LRU) could throw a NullPointerException.
changelog_1267_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_1268_h2=Version 1.1.115 (2009-06-21)
changelog_1269_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_1270_li=ALTER TABLE could throw an exception "object already exists" in some cases.
changelog_1271_li=Views\:in some situations, an ArrayIndexOutOfBoundsException was thrown when using the same view concurrently.
changelog_1272_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_1273_li=H2 Console\:the language was reset to the browser language when disconnecting.
changelog_1275_li=Server-less multi-connection mode\:more bugs are fixed.
changelog_1276_li=The download page now included the SHA1 checksums.
changelog_1277_li=Shell tool\:the file encoding workaround is now documented if you run java org.h2.tools.Shell -?.
changelog_1278_li=The RunScript tool and SQL statement did not work with the compression method LZF.
changelog_1279_li=Fulltext search\:searching for NULL or an empty string threw an exception.
changelog_1280_li=Lucene fulltext search\:FTL_DROP_ALL did not drop the triggers.
changelog_1281_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_1282_li=Data types\:LONG is now an alias for BIGINT.
changelog_1283_h2=Version 1.1.114 (2009-06-01)
changelog_1284_li=ResultSetMetaData.getColumnClassName returned the wrong class for CLOB and BLOB columns.
changelog_1285_li=Fulltext search\:data is no longer deleted and re-inserted if the indexed columns didn't change.
changelog_1286_li=In some situations, an ArrayIndexOutOfBoundsException was thrown when adding rows. This was caused by a bug in the b-tree code.
changelog_1287_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_1288_li=The Recover tool did not always work when the database contains referential integrity constraints.
changelog_1289_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_1290_h2=Version 1.1.113 (2009-05-21)
changelog_1291_li=Shell tool\:the built-in commands EXIT, HELP, ?, LIST, and so on didn't work with a semicolon at the end.
changelog_1292_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_1293_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_1294_li=Identifiers with a digit and then a dollar sign didn't work. Example\:A1$B.
changelog_1295_li=MS SQL Server compatibility\:support for linked tables with NVARCHAR, NCHAR, NCLOB, and LONGNVARCHAR.
changelog_1296_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_1297_li=Calling execute() or prepareStatement() with null as the SQL statement now throws an exception.
changelog_1298_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_1299_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_1300_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_1301_h2=Version 1.1.112 (2009-05-01)
changelog_1302_li=JdbcPreparedStatement.toString() could throw a NullPointerException.
changelog_1304_li=Connection pool\:the default login timeout is now 5 minutes.
changelog_1305_li=After truncating tables, opening large databases could become slow because indexes were always re-built unnecessarily when opening.
changelog_1306_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_1307_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_1308_li=Improved error message when the .lock.db file modification time is in the future.
changelog_1309_li=The MERGE statement now returns 0 as the generated key if the row was updated.
changelog_1310_li=Running code coverage is now automated.
changelog_1311_li=A file system implementation can now be registered using FileSystem.register.
changelog_1312_li=The database file system is no longer included in the jar file, it moved to the test section.
changelog_1313_h2=Version 1.1.111 (2009-04-10)
changelog_1314_li=In-memory databases can now run inside the Google App Engine.
changelog_1315_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_1316_li=The wrong exception was thrown when using unquoted text for the SQL statements COMMENT, ALTER USER, and SET PASSWORD.
changelog_1317_li=The built-in connection pool did not roll back transactions and enable autocommit enabled after closing a connection.
changelog_1318_li=Sometimes a StackOverflow occurred when checking for deadlock. See also http\://code.google.com/p/h2database/issues/detail?id\=61
changelog_1319_li=The Shell tool no longer truncates results with only one column, and displays a message if data was truncated.
changelog_1320_h2=Version 1.1.110 (2009-04-03)
changelog_1321_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_1322_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_1323_li=The data type of a SUBSTRING method was wrong.
changelog_1324_li=ResultSet.findColumn and get methods with column label parameters now also check for matching column names (like most databases except MySQL).
changelog_1325_li=H2 Console\:the browser system property now supports a list of arguments. Example\:java -Dh2.browser\="open,-a,Safari,%url"...
changelog_1326_li=Improved Javadoc navigation (similar to Scaladoc).
changelog_1327_li=H2 Console\:auto-complete of identifiers did not work correctly for H2 databases in MySQL mode.
changelog_1328_li=DISTINCT and GROUP BY on a CLOB column was broken.
changelog_1329_li=The FTP server moved to the tools section and is no longer included in the h2*.jar file.
changelog_1330_li=Improved error message for unsupported features\:now the message says what exactly is not supported.
changelog_1331_li=Improved OSGi support.
changelog_1332_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_1333_li=The API of the tools changed a bit (each tool now returns an exit code).
changelog_1334_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_1335_li=CREATE TABLE\:improved compatibility (support for UNIQUE NOT NULL).
changelog_1336_li=DatabaseMetaData.getSQLKeywords now returns the correct list.
changelog_1337_li=Deterministic user defined functions did not work when the parameter was a column. Fixed.
changelog_1338_li=JdbcConnectionPool.setLoginTimeout with 0 now uses the default timeout.
changelog_1339_li=Creating a JdbcConnectionPool has been simplified a bit.
changelog_1340_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_1341_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_1342_li=Linked tables to SQLite database can now be created.
changelog_1343_li=Nested IN(IN(...)) didn't work.
changelog_1344_li=NIO storage\:the nio\:prefix was using memory mapped files instead of FileChannel.
changelog_1345_h2=Version 1.1.109 (2009-03-14)
changelog_1346_li=The optimization for IN(...) is now only used if comparing a column with an index.
changelog_1347_li=User defined functions can now be deterministic (see CREATE ALIAS documentation).
changelog_1348_li=Multiple nested queries in the FROM clause with parameters did not always work.
changelog_1349_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_1350_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_1351_li=The functions BITOR, BITAND, BITXOR, and MOD now accept and return BIGINT instead of INT.
changelog_1352_li=Could not use the same linked table multiple times in the same query.
changelog_1353_li=Bugs in the server-less multi-connection mode have been fixed.
changelog_1354_li=Column names could not be named "UNIQUE" (with the quotes).
changelog_1355_li=New system function TRANSACTION_ID() to get the current transaction identifier for a session.
