The French translation of the H2 Console has been improved by Olivier Parent. Thanks a lot!
Aliases for built-in data types (such as MEDIUMBLOB which is an alias for BLOB) can now be re-mapped to another data type using CREATE DOMAIN. However main built-in data types (such as INTEGER) can not be re-mapped.
@changelog_1003_li
There was a memory leak when creating and dropping tables and indexes in a loop (persistent database only).
The Japanese translation has been completed by Masahiro Ikemoto. Thanks a lot!
@changelog_1004_li
SET LOG 2 was not effective if executed after opening the database.
Improved PostgreSQL compatibility for NEXTVAL and CURRVAL.
@changelog_1005_li
Translating the H2 Console is now simpler.
Less heap memory is needed when multiple databases are open at the same time: The memory reserve (used to rollback after out of memory) is now global and no longer allocated for each database separately.
@changelog_1006_li
Common exception (error code 23*) are no longer written to the .trace.db file by default.
New system property h2.browser to set the browser to use.
@changelog_1007_li
To start the browser, java.awt.Desktop.browse is now used if available.
@changelog_1008_h2
Version 1.1.102 (2008-10-24)
@changelog_1009_li
The French translation of the H2 Console has been improved by Olivier Parent. Thanks a lot!
@changelog_1010_li
There was a memory leak when creating and dropping tables and indexes in a loop (persistent database only).
@changelog_1011_li
SET LOG 2 was not effective if executed after opening the database.
@changelog_1012_li
Translating the H2 Console is now simpler.
@changelog_1013_li
Common exception (error code 23*) are no longer written to the .trace.db file by default.
@changelog_1014_li
In-memory databases don't write LOBs to files any longer.
@changelog_1008_li
@changelog_1015_li
Self referencing constraints didn't restrict deleting rows that reference itself if there is another row that references it.
@changelog_1009_li
@changelog_1016_li
ResultSetMetaData.getColumnName now returns the alias name except for columns.
@changelog_1010_li
@changelog_1017_li
Temporary files are now deleted when the database is closed, even if they were not garbage collected so far.
@changelog_1011_h2
@changelog_1018_h2
Version 1.1.101 (2008-10-17)
@changelog_1012_li
@changelog_1019_li
Errors with code 42000 - 42999 are no longer written to the trace file by default.
@changelog_1013_li
@changelog_1020_li
Queries with more than 10 tables are now faster.
@changelog_1014_li
@changelog_1021_li
Opening a connection with AUTO_SERVER=TRUE is now fast when the database is already open in another process (less than 0.01 seconds instead of 2 seconds).
@changelog_1015_li
@changelog_1022_li
IF [NOT] EXISTS is supported for named constraints in ALTER TABLE ... ADD/DROP CONSTRAINT.
@changelog_1016_li
@changelog_1023_li
The error messages have been translated to Spanish by Dario V. Fassi. Thanks a lot!
@changelog_1017_li
@changelog_1024_li
Linked tables: the automatic connection sharing didn't work. Actually the system property h2.shareLinkedConnections was working in the opposite direction: it was disabled when set to true. Now it works as expected.
@changelog_1018_li
@changelog_1025_li
Opening large database is now faster.
@changelog_1019_li
@changelog_1026_li
New system property h2.socketConnectTimeout, the timeout in milliseconds to connect to a server. The default is 2000 (2 seconds).
@changelog_1020_li
@changelog_1027_li
The wrong parameters were bound to subqueries with parameters, specially when using IN(SELECT ...) and IN(...).
@changelog_1021_li
@changelog_1028_li
Unset parameters were not detected when the query was re-compiled.
@changelog_1022_li
@changelog_1029_li
New functions ISO_YEAR, ISO_WEEK, ISO_DAY_OF_WEEK. Thanks a lot to Robert Rathsack for implementing those!
@changelog_1023_li
@changelog_1030_li
The date functions DAYOFYEAR, DAYOFMONTH, DAYOFWEEK are now called DAY_OF_YEAR, DAY_OF_MONTH, DAY_OF_WEEK (the old names still work).
@changelog_1024_li
@changelog_1031_li
An out of memory error while deleting or updating many rows could result in a strange exception.
@changelog_1025_li
@changelog_1032_li
Linked tables: compatibility with MS SQL Server has been improved.
@changelog_1026_li
@changelog_1033_li
Renaming tables that have foreign keys with cascade didn't work correctly.
@changelog_1027_li
@changelog_1034_li
The auto-reconnect feature didn't work when using the auto-server mode. Fixed.
@changelog_1028_li
@changelog_1035_li
Fulltext search: new method FT_DROP_INDEX.
@changelog_1029_li
@changelog_1036_li
The optimization to group using an index didn't work in some cases in version 1.1 (see also system property h2.optimizeGroupSorted).
@changelog_1030_li
@changelog_1037_li
OSGi meta data is included in the manifest file. An OSGi BundleActivator is included: it loads the database driver when starting the bundle, and unloads it when stopping the bundle.
@changelog_1031_li
@changelog_1038_li
The default value for MAX_MEMORY_UNDO is now 50000.
@changelog_1032_li
@changelog_1039_li
For alias columns, ResultSetMetaData.getTableName() and getColumnName() now return the real table and column name in the default mode.
@changelog_1033_li
@changelog_1040_li
In SQL scripts created with SCRIPT TO, schemas are now only created if they don't exist yet.
@changelog_1034_li
@changelog_1041_li
After re-connecting to a database, the database event listener (if set) is informed about it.
@changelog_1035_li
@changelog_1042_li
Local temporary tables now support indexes. Thanks a lot to Matt Roy!
@changelog_1036_li
@changelog_1043_li
RUNSCRIPT no longer uses a temporary file.
@changelog_1037_li
@changelog_1044_li
New system table INFORMATION_SCHEMA.SESSION_STATE containing the SQL statements that make up the session state. The list currently contains variables (SET @..) and local temporary tables (without data).
@changelog_1038_li
@changelog_1045_li
After an automatic re-connect, part of the session state stays (the part that is stored in the SESSION_STATE table).
@changelog_1039_li
@changelog_1046_li
The build didn't work if the directory temp didn't exist before.
@changelog_1040_li
@changelog_1047_li
New system property h2.maxReconnect (default 3) to limit the number of re-connects for the same SQL statement (this is usually only important for SHUTDOWN).
@changelog_1041_li
@changelog_1048_li
WHERE .. IN (SELECT ...) could throw a NullPointerException.
@changelog_1042_li
@changelog_1049_li
Improved Glassfish / Toplink support in H2Platform thanks to Marcio Borges from Brazil. Thanks a lot!
@changelog_1043_h2
@changelog_1050_h2
Version 1.1.100 (2008-10-04)
@changelog_1044_li
@changelog_1051_li
In version 1.1, the following system properties are now enabled by default: h2.lobFilesInDirectories, h2.optimizeGroupSorted, h2.optimizeInJoin, h2.shareLinkedConnections
@changelog_1045_li
@changelog_1052_li
The H2 Console tool now works with the JDBC-ODBC bridge.
@changelog_1046_li
@changelog_1053_li
The H2 Console tool now supports command line options to start things separately.
@changelog_1047_li
@changelog_1054_li
Large objects did not work for in-memory databases in server mode in Linux.
@changelog_1048_li
@changelog_1055_li
Connections from a local address other than 'localhost' were not allowed if remote connections were disabled. This was always a problem, but only got visible in the last release because the server no longer connects to 'localhost' if networked.
@changelog_1049_li
@changelog_1056_li
The h2console.war can now be built using the Java build.
@changelog_1050_li
@changelog_1057_li
By default, databases are shared in the same process. For read-only databases this causes unnecessary synchronization, but safes memory. If you want that each connection opens its own database, append ;OPEN_NEW=TRUE to the database URL.
@changelog_1051_li
@changelog_1058_li
New auto-reconnect feature will cause the JDBC driver to reconnect to the database if the connection is lost. To enable, append ;AUTO_RECONNECT=TRUE to the database URL. This is specially helpful when using AUTO_SERVER. AUTO_SERVER automatically uses auto-reconnect.
@changelog_1052_li
@changelog_1059_li
CreateCluster: the property 'serverlist' is now called 'serverList'.
@changelog_1053_li
@changelog_1060_li
The ConvertTraceFile tool could not parse some files because the trace mechanism did not encode prepared statement parameters.
@changelog_1054_li
@changelog_1061_li
Databases names can now be one character long (the minimum size used to be 2 characters).
@changelog_1055_h2
@changelog_1062_h2
Version 1.0.79 (2008-09-26)
@changelog_1056_li
@changelog_1063_li
Linked tables that point to the same database can now share the connection within the same database. Access to the same connection is serialized. To enable this feature, set the system property h2.shareLinkedConnections to true.
@changelog_1057_li
@changelog_1064_li
Multiple processes can now access the same database without having to explicitly start the server. To do that, append ;AUTO_SERVER=TRUE to the database URL. In this case, the server is started automatically if the connection is in embedded mode, and the server mode is used if a server is running. If the process that opened the first connection is closed, the other client need to reconnect (there is no automatic re-connect so far). Remote connections are allowed, but only to this database.
@changelog_1058_li
@changelog_1065_li
The server tool now displays the correct IP address if networked.
@changelog_1059_li
@changelog_1066_li
Can now start a TCP server with port 0 (automatically select a port).
@changelog_1060_li
@changelog_1067_li
Result sets with just a unique index can now be updated (previously a primary key was required).
@changelog_1061_li
@changelog_1068_li
LINKED TABLE: the schema name can now be set. When multiple tables exist in different schema, and the schema name is not set, an exception is thrown.
@changelog_1062_li
@changelog_1069_li
LINKED TABLE: worked around a bug in Oracle with the CHAR data type.
@changelog_1063_li
@changelog_1070_li
Faster hash code calculation for large binary arrays.
@changelog_1064_li
@changelog_1071_li
Faster storage re-use algorithm thanks to Greg Dhuse from cleversafe.com.
@changelog_1065_li
@changelog_1072_li
The database supports the SHOW command for better MySQL and PostgreSQL compatibility.
@changelog_1066_li
@changelog_1073_li
The H2 Console now abbreviates large texts in results.
@changelog_1067_li
@changelog_1074_li
Multiple UNION queries could not be used in derived tables.
@changelog_1068_li
@changelog_1075_li
Linked tables can now be read-only.
@changelog_1069_li
@changelog_1076_li
Temporary linked tables are now supported.
@changelog_1070_li
@changelog_1077_li
It was possible to create tables in read-only databases.
@changelog_1071_li
@changelog_1078_li
SET SCHEMA_SEARCH_PATH is now documented.
@changelog_1072_li
@changelog_1079_li
SET SCHEMA did not work for views.
@changelog_1073_li
@changelog_1080_li
Row level locking for MVCC is now enabled. The exception 'Concurrent update in table ...' is still thrown, but only after the lock timeout.
@changelog_1074_li
@changelog_1081_li
The maximum log file size setting was ignored for large databases.
@changelog_1075_li
@changelog_1082_li
Multi-Version Concurrency (MVCC) may no longer be used when using the multi-threaded kernel feature (MULTI_THREADED). An exception is thrown when trying to connect with both settings. Additional synchronization is required before those features can be used together.
@changelog_1076_li
@changelog_1083_li
The data type JAVA_OBJECT could not be used in updatable result sets.
@changelog_1077_li
@changelog_1084_li
The system property h2.optimizeInJoin did not work correctly.
@changelog_1078_li
@changelog_1085_li
Conditions such as ID=? AND ID>? were slow.
@changelog_1079_h2
@changelog_1086_h2
Version 1.0.78 (2008-08-28)
@changelog_1080_li
@changelog_1087_li
The documentation no longer uses a frameset (except the Javadocs).
@changelog_1081_li
@changelog_1088_li
When using DB_CLOSE_DELAY, sometimes a NullPointerException is thrown when the database is opened almost at the same time as it is closed automatically. Thanks a lot to Dmitry Pekar for finding this!
@changelog_1082_li
@changelog_1089_li
Java methods with variable number of parameters can now be used (for Java 1.5 or newer).
@changelog_1083_li
@changelog_1090_li
The Japanese translation has been improved by Masahiro Ikemoto. Thanks a lot!
@changelog_1084_li
@changelog_1091_li
The H2 Console replaced an empty user name with a single space.
@changelog_1085_li
@changelog_1092_li
The build target 'build jarSmall' now includes the embedded database.
@changelog_1086_li
@changelog_1093_li
JdbcDataSource now keeps the password in a char array where possible.
@changelog_1087_li
@changelog_1094_li
ResultSet.absolute did not always work with large result sets.
@changelog_1088_li
@changelog_1095_li
Column aliases can now be used in GROUP BY and HAVING.
@changelog_1089_li
@changelog_1096_li
Jason Brittain has contributed MySQL date functions. Thanks a lot! They are not in the h2.jar file currently, but in src/tools/org/h2/mode/FunctionsMySQL.java. To install, add this class to the classpath and call FunctionsMySQL.register(conn) in the Java code.
@changelog_1090_h2
@changelog_1097_h2
Version 1.0.77 (2008-08-16)
@changelog_1091_li
@changelog_1098_li
JaQu is now using prepared statements and supports Date, Time, Timestamp.
@changelog_1092_li
@changelog_1099_li
When using remote in-memory databases, large LOB objects did not work.
@changelog_1093_li
@changelog_1100_li
Timestamp columns such as TIMESTAMP(6) were not compatible to other database.
@changelog_1094_li
@changelog_1101_li
Opening a large database was slow if there was a problem opening the previous time.
@changelog_1095_li
@changelog_1102_li
NOT IN(SELECT ...) was incorrect if the subquery returns no rows.
@changelog_1096_li
@changelog_1103_li
CREATE TABLE AS SELECT did not work correctly in the multi-version concurrency mode.
@changelog_1097_li
@changelog_1104_li
Support a comma before closing a list, as in: create table test(id int,)
@changelog_1098_li
@changelog_1105_li
MySQL compatibility: linked tables had lower case column names on some systems.
@changelog_1099_li
@changelog_1106_li
DB2 compatibility: the DB2 fetch-first-clause is supported.
@changelog_1100_li
@changelog_1107_li
Oracle compatibility: old style outer join syntax using (+) did work correctly sometimes.
@changelog_1101_li
@changelog_1108_li
ResultSet.setFetchSize is now supported.
@changelog_1102_li
@changelog_1109_li
It has been reported that when using Install4j on some Linux systems and enabling the 'pack200' option, the h2.jar becomes corrupted by the install process, causing application failure. A workaround is to add an empty file h2.jar.nopack next to the h2.jar file. The reason for this problem is not known.
@changelog_1103_h2
@changelog_1110_h2
Version 1.0.76 (2008-07-27)
@changelog_1104_li
@changelog_1111_li
The comment of a domain (user defined data type) is now used as the default column comment when creating a column with this domain.
@changelog_1105_li
@changelog_1112_li
Invalid database names are now detected and a better error message is thrown.
@changelog_1106_li
@changelog_1113_li
ResultSetMetaData.getColumnClassName now returns the correct class name for BLOB and CLOB.
@changelog_1107_li
@changelog_1114_li
Fixed the Oracle mode: Oracle allows multiple rows only where all columns of the unique index are NULL.
@changelog_1108_li
@changelog_1115_li
There is a problem with Hibernate when using Boolean columns. A patch for Hibernate has been submitted at http://opensource.atlassian.com/projects/hibernate/browse/HHH-3401
@changelog_1109_li
@changelog_1116_li
ORDER BY on tableName.columnName didn't work correctly if the column name was also used as an alias.
@changelog_1110_li
@changelog_1117_li
H2 Console: The progress display when opening a database has been improved.
@changelog_1111_li
@changelog_1118_li
The error message when the server doesn't start has been improved.
@changelog_1112_li
@changelog_1119_li
Key values can now be changed in updatable result sets.
@changelog_1113_li
@changelog_1120_li
Changes in updatable result sets are now visible even when resetting the result set.
@changelog_1114_li
@changelog_1121_li
Temporary files were sometimes deleted too late when executing large insert, update, or delete operations.
@changelog_1115_li
@changelog_1122_li
The database file was growing after deleting many rows, and after large update operations.
@changelog_1116_h2
@changelog_1123_h2
Version 1.0.75 (2008-07-14)
@changelog_1117_li
@changelog_1124_li
Multi version concurrency (MVCC): when a row was updated or deleted, but this change was rolled back, the row was not visible by other sessions if no index was used to access it. Fixed.
@changelog_1118_li
@changelog_1125_li
Views with multiple joined tables (where one was an outer join) couldn't be used in some cases. Fixed.
@changelog_1119_li
@changelog_1126_li
The CSVREAD method did not process NULL correctly when using a whitespace field separator.
@changelog_1120_li
@changelog_1127_li
Fixed the Oracle mode: Oracle allows multiple rows with NULL in a unique index.
@changelog_1121_li
@changelog_1128_li
Running out of memory could result in incomplete transactions or corrupted databases. Fixed.
@changelog_1122_li
@changelog_1129_li
When using order by in a query that uses the same table multiple times, the order could be incorrect. Fixed.
@changelog_1123_li
@changelog_1130_li
Referential constraint checking improvement: now the constraint is only checked if the key column values change.
@changelog_1124_li
@changelog_1131_li
Some database metadata calls returned the wrong data type for DATA_TYPE columns.
@changelog_1125_li
@changelog_1132_li
The Lucene fulltext index was empty when opening a database with fulltext index enabled, and re-indexing it didn't work. Fixed.
@changelog_1126_li
@changelog_1133_li
The character '$' could not be used in identifier names (table name, column names and so on). Fixed.
@changelog_1127_li
@changelog_1134_li
The new method org.h2.tools.Server.startWebServer(conn) starts the H2 Console to inspect a database while debugging.
@changelog_1128_li
@changelog_1135_li
Stopping a WebServer didn't always work. Fixed.
@changelog_1129_h2
@changelog_1136_h2
Version 1.0.74 (2008-06-21)
@changelog_1130_li
@changelog_1137_li
Work on row level locking has been started (but there is nothing usable yet).
@changelog_1131_li
@changelog_1138_li
JaQu (Java Query), a tool similar to LINQ (Language Integrated Query; from Microsoft) is now included under src/tools/org/h2/jaqu. A small sample application is included under src/test/org/h2/test/jaqu.
@changelog_1132_li
@changelog_1139_li
The source code is now switched to Java 1.6 by default. To switch back to Java 1.4, run 'build compile'. The h2.jar file is still Java 1.4.
@changelog_1133_li
@changelog_1140_li
The ChangePassword tool is now called ChangeFileEncryption.
@changelog_1134_li
@changelog_1141_li
It is no longer allowed to create columns with the data type NULL. Also, it is no longer allowed to convert a column to the data type NULL. This was possible before but caused data loss.
@changelog_1135_li
@changelog_1142_li
When using computed columns or default values with a different data type than the column data type, a class cast exception could occur. Fixed.
@changelog_1136_li
@changelog_1143_li
Opening databases larger than 1 GB was sometimes very slow if a lot of data was deleted previously. Fixed.
@changelog_1137_li
@changelog_1144_li
RUNSCRIPT could throw a NullPointerException if the script name was an expression.
@changelog_1138_li
@changelog_1145_li
Improved compatibility. New compatibility modes for Oracle and Derby. New compatibility flag uniqueIndexNullDistinct to only allow one row with 'NULL' in a unique index. This flag is enabled for Derby, Oracle, MSSQLServer, and HSQLDB.
@changelog_1139_li
@changelog_1146_li
Linked tables: To view the statements that are executed against the target table, set the trace level to 3.
@changelog_1140_li
@changelog_1147_li
RunScript tool: new options to show and check the results of queries.
@changelog_1141_li
@changelog_1148_li
Deadlocks are now detected. One transaction is rolled back automatically.
@changelog_1142_li
@changelog_1149_li
The Lucene fulltext index was always re-created when opening a database with fulltext index enabled.
@changelog_1143_li
@changelog_1150_li
Support for overloaded Java methods. A user defined function can now be bound to multiple Java methods, if the Java methods have the same name but a different number of parameters. Thanks to Gary Tong for providing a patch!
@changelog_1144_h2
@changelog_1151_h2
Version 1.0.73 (2008-05-31)
@changelog_1145_li
@changelog_1152_li
ParameterMetaData now returns the right data type for most conditions, as in WHERE ID=?.
@changelog_1146_li
@changelog_1153_li
The table SYSTEM_RANGE now supports expressions and parameters.
@changelog_1147_li
@changelog_1154_li
New column INFORMATION_SCHEMA.CONSTRAINTS.UNIQUE_INDEX_NAME that contains the name of the unique index used to enforce this constraint, if there is such an index.
@changelog_1148_li
@changelog_1155_li
SET QUERY_TIMEOUT and Statement.setQueryTimeout no longer commits a transaction. The same applies to SET @VARIABLE, SET LOCK_TIMEOUT, SET TRACE_LEVEL_*, SET THROTTLE, and SET PATH.
@changelog_1149_li
@changelog_1156_li
The SCRIPT command does now emit IF NOT EXISTS for CREATE ROLE.
@changelog_1150_li
@changelog_1157_li
MySQL compatibility: auto_increment column are no longer automatically converted to primary key columns.
@changelog_1151_li
@changelog_1158_li
PostgreSQL compatibility: support for BOOL_OR and BOOL_AND aggregate functions.
@changelog_1152_li
@changelog_1159_li
Negative scale values for DECIMAL or NUMBER columns are now supported in regular tables and in linked tables.
@changelog_1153_li
@changelog_1160_li
A role or right can now be granted or revoked multiple times without getting an exception.
@changelog_1154_li
@changelog_1161_li
Infinite numbers in SQL scripts are listed as POWER(0, -1)), negative infinite as (-POWER(0, -1)), and NaN (not a number) as SQRT(-1).
@changelog_1155_li
@changelog_1162_li
The special double and float values 'NaN' (not a number) did not work correctly when sorting or comparing.
@changelog_1156_li
@changelog_1163_li
The fulltext search did not support CLOB data types.
@changelog_1157_li
@changelog_1164_li
If the drive with the database files was disconnected or unmounted while writing, sometimes a stack overflow exception was thrown instead of a IO exception.
@changelog_1158_li
@changelog_1165_li
The H2 Console could not be shut down from within the tool if the browser supports keepAlive (most browsers do).
@changelog_1159_li
@changelog_1166_li
If the password was passed as a char array, it was kept in an internal buffer longer than required. Theoretically the password could have been stolen if the main memory was swapped to disk before the garbage collection was run.
@changelog_1160_h2
@changelog_1167_h2
Version 1.0.72 (2008-05-10)
@changelog_1161_li
@changelog_1168_li
Some databases could not be opened when appending ;RECOVER=1 to the database URL.
@changelog_1162_li
@changelog_1169_li
The Japanese translation of the error messages and the H2 Console has been completed by Masahiro Ikemoto (Arizona Design Inc.)
@changelog_1163_li
@changelog_1170_li
Updates made to updatable rows are now visible within the same result set. DatabaseMetaData.ownUpdatesAreVisible now returns true.
@changelog_1164_li
@changelog_1171_li
ParameterMetaData now returns the correct data for INSERT and UPDATE statements.
@changelog_1165_li
@changelog_1172_li
H2 Shell: DESCRIBE now supports an schema name.
@changelog_1166_li
@changelog_1173_li
A subset of the PostgreSQL 'dollar quoting' feature is now supported.
@changelog_1167_li
@changelog_1174_li
SLF4J is now supported by using adding TRACE_LEVEL_FILE=4 to the database URL.
@changelog_1168_li
@changelog_1175_li
The recovery tool did not work if the table name contained spaces or if there was a comment on the table.
@changelog_1169_li
@changelog_1176_li
Triggers are no longer executed when changing the table structure (ALTER TABLE).
@changelog_1170_li
@changelog_1177_li
When setting BLOB or CLOB values larger than 65 KB using a remote connection, temporary files were kept on the client longer than required (until the connection was closed or the object is garbage collected). Now they are removed as soon as the PreparedStatement is closed, or when the value is overwritten.
@changelog_1171_li
@changelog_1178_li
Statements can now be canceled remotely (when using remote connections).
@changelog_1172_li
@changelog_1179_li
The Shell tool now uses java.io.Console to read the password when using JDK 1.6
@changelog_1173_li
@changelog_1180_li
When using read-only databases and setting LOG=2, an exception was written to the trace file when closing the database. Fixed.
@changelog_1174_h2
@changelog_1181_h2
Version 1.0.71 (2008-04-25)
@changelog_1175_li
@changelog_1182_li
H2 is now dual-licensed under the Eclipse Public License (EPL) and the old 'H2 License' (which is basically MPL).
@changelog_1176_li
@changelog_1183_li
Sometimes an exception 'File ID mismatch' or 'try to add a record twice' occurred after large records (8 KB or larger) are updated or deleted. See also http://code.google.com/p/h2database/issues/detail?id=22
@changelog_1177_li
@changelog_1184_li
H2 Console: The tools can now be translated (it didn't work in the last release).
@changelog_1178_li
@changelog_1185_li
New traditional Chinese translation. Thanks a lot to Derek Chao!
@changelog_1179_li
@changelog_1186_li
Indexes were not used when enabling the optimization for IN(SELECT...) (system property h2.optimizeInJoin).
@changelog_1180_h2
@changelog_1187_h2
Version 1.0.70 (2008-04-20)
@changelog_1181_li
@changelog_1188_li
The plan is to dual-license H2. The additional license is EPL (Eclipse Public License). The current license (MPL, Mozilla Public License) will stay. Current users are not affected because they can keep MPL. EPL is very similar to MPL, the only bigger difference is related to patents (EPL is a bit more business friendly in this regard). See also http://opensource.org/licenses/eclipse-1.0.php, http://www.eclipse.org/legal/eplfaq.php (FAQ), http://blogs.zdnet.com/Burnette/?p=131
@changelog_1182_li
@changelog_1189_li
Multi version concurrency (MVCC): when a row was updated, and the updated column was not indexed, this update was visible sometimes for other sessions even if it was not committed.
@changelog_1183_li
@changelog_1190_li
Calling SHUTDOWN on one connection and starting a query on another connection concurrently could result in a Java level deadlock.
@changelog_1184_li
@changelog_1191_li
New system property h2.enableAnonymousSSL (default: true) to enable anonymous SSL connections.
@changelog_1185_li
@changelog_1192_li
The precision if SUBSTR is now calculated if possible.
@changelog_1186_li
@changelog_1193_li
The autocomplete in the H2 Console has been improved a bit.
@changelog_1187_li
@changelog_1194_li
The tools in the H2 Console are now translatable.
@changelog_1188_li
@changelog_1195_li
The servlet and lucene jar files are now automatically downloaded when building.
@changelog_1189_li
@changelog_1196_li
The code switch tool has been replaced by a simpler tool called SwitchSource that just uses find and replace.
@changelog_1190_li
@changelog_1197_li
Started to write a Ant replacement ('JAnt') that uses pure Java build definitions. Advantages: ability to debug the build, extensible, flexible, no XML, a bit faster. Future plan: support creating custom h2 distributions (for embedded use). Maybe create a new project 'Jant' or 'Javen' if other people are interested.
@changelog_1191_li
@changelog_1198_li
The jar file is now about 10% smaller because the variable debugging info is no longer included. The source file and line number debugging info is still included. If required, the jar file size of the full version can be further reduced to about 720 KB using 'build jarSmall' or even more by removing unneeded components.
@changelog_1192_li
@changelog_1199_li
Added shell scripts run.sh and build.sh. chmod +x is required, but otherwise it should work. Feedback or improvements are welcome!
@changelog_1193_li
@changelog_1200_li
Databases in zip files: large queries are now supported. Temp files are created in the temp directory if required. The documentation how to create the zip file has been corrected.
The Japanese translation of the error messages and the H2 Console has been improved. Thanks a lot to Masahiro IKEMOTO.
@changelog_1196_li
@changelog_1203_li
Optimization for MIN() and MAX() when using MVCC.
@changelog_1197_li
@changelog_1204_li
To protect against remote brute force password attacks, the delay after each unsuccessful login now gets double as long. New system properties h2.delayWrongPasswordMin and h2.delayWrongPasswordMax.
@changelog_1198_li
@changelog_1205_li
After setting the query timeout and then resetting it, the next query would still timeout. Fixed.
@changelog_1199_li
@changelog_1206_li
Adding a IDENTITY column to a table with data threw a lock timeout.
@changelog_1200_li
@changelog_1207_li
OutOfMemoryError could occur when using EXISTS or IN(SELECT ..).
@changelog_1201_li
@changelog_1208_li
The built-in connection pool is not called JdbcConnectionPool. The API and documentation has been changed.
@changelog_1202_li
@changelog_1209_li
The ConvertTraceFile tool now generates SQL statement statistics at the end of the SQL script file (similar to the profiling data generated when using java -Xrunhprof).
@changelog_1203_li
@changelog_1210_li
Nested joins are now supported (A JOIN B JOIN C ON .. ON ..)
@changelog_1204_h2
@changelog_1211_h2
Version 1.0.69 (2008-03-29)
@changelog_1205_li
@changelog_1212_li
Most command line tools can now be called from within the H2 Console.
@changelog_1206_li
@changelog_1213_li
A new Shell tools is now included (org.h2.tools.Shell) to query a database from the command line.
@changelog_1207_li
@changelog_1214_li
The command line options in the tools have changed: instead of '-log true' now '-trace' is used. Also, '-ifExists', '-tcpSSL' and '-tcpAllowOthers' and so on have changed: now the 'true' is no longer needed. The old behavior is still supported.
@changelog_1208_li
@changelog_1215_li
New system property h2.sortNullsHigh to invert the default sorting behavior for NULL. The default didn't change.
@changelog_1209_li
@changelog_1216_li
Performance was very slow when using LOG=2 and deleting or updating all rows of a table in a loop. Fixed.
@changelog_1210_li
@changelog_1217_li
ALTER TABLE or CREATE TABLE now support parameters for the password field.
@changelog_1211_li
@changelog_1218_li
The linear hash has been removed. It was always slower than the b-tree index, and there were some bugs that would be hard to fix.
@changelog_1212_li
@changelog_1219_li
TRACE_LEVEL_ settings are no longer persistent. This was a problem when database initialization code caused a lot of trace output.
@changelog_1213_li
@changelog_1220_li
Fulltext search (native implementation): The words table is no longer an in-memory table because this caused memory problems in some cases.
@changelog_1214_li
@changelog_1221_li
It was possible to create a role with the name as an existing user (but not vice versa). This is not allowed any more.
@changelog_1215_li
@changelog_1222_li
The recovery tool didn't work correctly for tables without rows.
@changelog_1216_li
@changelog_1223_li
For years below 1, the YEAR method didn't return the correct value, and the conversion from date and timestamp to varchar was incorrect.
@changelog_1217_li
@changelog_1224_li
CSVWRITE caused a NullPointerException when not specifying a nullString.
@changelog_1218_li
@changelog_1225_li
When a log file switch occurred just after a truncate table or drop table statement, the database could not be started normally (RECOVER=1 was required). Fixed.
@changelog_1219_li
@changelog_1226_li
When a log file switch occurred in the middle of a sequence flush (sequences are only flushed every 32 values by default), the sequence value was lost. Fixed.
@changelog_1220_li
@changelog_1227_li
Altering a sequence didn't unlock the system table when autocommit switched off.
@changelog_1221_h2
@changelog_1228_h2
Version 1.0.68 (2008-03-18)
@changelog_1222_li
@changelog_1229_li
Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000.
@changelog_1223_li
@changelog_1230_li
A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked.
@changelog_1224_li
@changelog_1231_li
Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory.
@changelog_1225_li
@changelog_1232_li
ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction.
@changelog_1226_li
@changelog_1233_li
New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled.
@changelog_1227_li
@changelog_1234_li
When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed.
@changelog_1228_li
@changelog_1235_li
Improved performance when using lob files in directories (however this is still disabled by default)
@changelog_1229_li
@changelog_1236_li
H2 Console: autocomplete didn't work with very large scripts. Fixed.
@changelog_1230_li
@changelog_1237_li
Fulltext search: new method SEARCH_DATA that returns the column names and primary keys as arrays.
@changelog_1231_li
@changelog_1238_li
New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true.
@changelog_1232_li
@changelog_1239_li
When using multi-version concurrency (MVCC=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session.
@changelog_1233_li
@changelog_1240_li
H2 Console: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr.
@changelog_1234_li
@changelog_1241_li
H2 Console: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu.
@changelog_1235_li
@changelog_1242_li
H2 Console: the start window works better with IKVM
@changelog_1236_li
@changelog_1243_li
H2 Console: improved compatibility with Safari (Safari requires keep-alive)
@changelog_1237_li
@changelog_1244_li
Random: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem.
@changelog_1238_li
@changelog_1245_li
SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException.
@changelog_1239_li
@changelog_1246_li
When using a view, the column precision was changed to the default scale for some data types.
@changelog_1240_li
@changelog_1247_li
CSVWRITE now supports a 'null string' that is used for parsing and writing NULL.
@changelog_1241_li
@changelog_1248_li
Some long running queries could not be canceled.
@changelog_1242_li
@changelog_1249_li
Queries with many outer join tables were very slow. Fixed.
@changelog_1243_li
@changelog_1250_li
The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache.
@changelog_1244_li
@changelog_1251_li
UPDATE SET column=DEFAULT is now supported.
@changelog_1245_h2
@changelog_1252_h2
Version 1.0.67 (2008-02-22)
@changelog_1246_li
@changelog_1253_li
New function FILE_READ to read a file or from an URL. Both binary and text data is supported.
@changelog_1247_li
@changelog_1254_li
CREATE TABLE AS SELECT now supports specifying the column list and data types.
@changelog_1248_li
@changelog_1255_li
Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock.
@changelog_1249_li
@changelog_1256_li
A user now has all rights on his own local temporary tables.
@changelog_1250_li
@changelog_1257_li
The CSV tool now supports a custom lineSeparator.
@changelog_1251_li
@changelog_1258_li
When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering.
@changelog_1252_li
@changelog_1259_li
The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen!
@changelog_1253_li
@changelog_1260_li
Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger.
@changelog_1254_li
@changelog_1261_li
Opening databases with ACCESS_MODE_DATA=r is now supported. In this case the database is read-only, but the files don't not need to be read-only.
@changelog_1255_li
@changelog_1262_li
Security: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks.
@changelog_1256_li
@changelog_1263_li
The value cache is now a soft reference cache. This should help save memory.
@changelog_1257_li
@changelog_1264_li
CREATE INDEX on a table with many rows could run out of memory. Fixed.
@changelog_1258_li
@changelog_1265_li
Large result sets are now a bit faster.
@changelog_1259_li
@changelog_1266_li
ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions).
@changelog_1260_li
@changelog_1267_li
When setting the base directory on the command line, the user directory prefix ('~') was ignored.
@changelog_1261_li
@changelog_1268_li
The DbStarter servlet didn't start the TCP listener even if configured.
@changelog_1262_li
@changelog_1269_li
Statement.setQueryTimeout() is now supported.
@changelog_1263_li
@changelog_1270_li
New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout.
@changelog_1264_li
@changelog_1271_li
Changing the transaction log level (SET LOG) is now written to the trace file by default.
@changelog_1265_li
@changelog_1272_li
In a SQL script, primary key constraints are now ordered before foreign key constraints.
@changelog_1266_li
@changelog_1273_li
It was not possible to create a referential constraint to a table in a different schema in some situations.
@changelog_1267_li
@changelog_1274_li
The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case.
@changelog_1268_h2
@changelog_1275_h2
Version 1.0.66 (2008-02-02)
@changelog_1269_li
@changelog_1276_li
There is a new online error analyzer tool.
@changelog_1270_li
@changelog_1277_li
H2 Console: stack traces are now links to the source code in the source repository (H2 database only).
@changelog_1271_li
@changelog_1278_li
CHAR data type equals comparison was case insensitive instead of case sensitive.
@changelog_1272_li
@changelog_1279_li
The exception 'Value too long for column' now includes the data.
@changelog_1273_li
@changelog_1280_li
The table name was missing in the documentation of CREATE INDEX.
@changelog_1274_li
@changelog_1281_li
Better support for IKVM (www.ikvm.net): the H2 Console now opens a browser window.
@changelog_1275_li
@changelog_1282_li
The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions.
@changelog_1276_li
@changelog_1283_li
The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed.
@changelog_1277_li
@changelog_1284_li
The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far).
@changelog_1278_li
@changelog_1285_li
The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice.
@changelog_1279_li
@changelog_1286_li
Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading.
@changelog_1280_li
@changelog_1287_li
For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string).
@changelog_1281_li
@changelog_1288_li
Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster.
@changelog_1282_li
@changelog_1289_li
Variables: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables.
@changelog_1283_li
@changelog_1290_li
Fulltext search is now supported in named in-memory databases.
@changelog_1284_li
@changelog_1291_li
H2 Console: multiple consecutive spaces in the setting name did not work. Fixed.
@changelog_1285_h2
@changelog_1292_h2
Version 1.0.65 (2008-01-18)
@changelog_1286_li
@changelog_1293_li
The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6).
@changelog_1287_li
@changelog_1294_li
A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER=1 to the database URL in cases where it should not have been required.
@changelog_1288_li
@changelog_1295_li
The performance for DROP and DROP ALL OBJECTS has been improved.
@changelog_1289_li
@changelog_1296_li
The ChangePassword API has been improved.
@changelog_1290_li
@changelog_1297_li
User defined variables are now supported. Examples: SET @VAR=10;CALL @VAR. This can be used for running totals as in: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10)
@changelog_1291_li
@changelog_1298_li
The Ukrainian translation has been improved.
@changelog_1292_li
@changelog_1299_li
CALL statements can now be used in batch updates and called using Statement.executeUpdate.
@changelog_1293_li
@changelog_1300_li
New read-only setting CREATE_BUILD (the build number of the database engine that created the database).
@changelog_1294_li
@changelog_1301_li
The optimizer did not use multi column indexes for range queries in some cases. Fixed.
@changelog_1295_li
@changelog_1302_li
The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified.
@changelog_1296_li
@changelog_1303_li
The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress.
@changelog_1297_li
@changelog_1304_li
Batch update: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed.
@changelog_1298_li
@changelog_1305_li
Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed.
@changelog_1299_li
@changelog_1306_li
The performance for large result sets in the server mode has been improved.
@changelog_1300_li
@changelog_1307_li
The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize.
@changelog_1301_li
@changelog_1308_li
The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used.
@changelog_1302_li
@changelog_1309_li
The SCRIPT command did not split up CLOB data correctly. Fixed.
@changelog_1303_li
@changelog_1310_li
Optimization for single column distinct queries with an index: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false.
@changelog_1304_li
@changelog_1311_li
DROP ALL OBJECTS did not drop user defined aggregate functions and domains.
@changelog_1305_li
@changelog_1312_li
PostgreSQL compatibility: COUNT(T.*) is now supported.
@changelog_1306_li
@changelog_1313_li
LIKE comparisons are now faster.
@changelog_1307_li
@changelog_1314_li
Encrypted databases are now faster.
@changelog_1308_h2
@changelog_1315_h2
Version 1.0.64 (2007-12-27)
@changelog_1309_li
@changelog_1316_li
3-way union queries with prepared statement or views could return the wrong results. Fixed.
@changelog_1310_li
@changelog_1317_li
The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed.
@changelog_1311_li
@changelog_1318_li
CSV tool: some escape/separator character combinations did not work. Fixed.
@changelog_1312_li
@changelog_1319_li
CSV tool: the character # could not be used as a separator when reading.
@changelog_1313_li
@changelog_1320_li
Recovery: when the index file is corrupt, now the database deletes it and re-creates it automatically.
@changelog_1314_li
@changelog_1321_li
The MVCC mode did not work well with in-memory databases. Fixed.
@changelog_1315_li
@changelog_1322_li
The FTP server now supports a event listener. Thanks Fulvio Biondi for the help!
@changelog_1316_li
@changelog_1323_li
New system function CANCEL_SESSION to cancel the currently executing statement of another session.
@changelog_1317_li
@changelog_1324_li
The database now supports an exclusive mode. In exclusive mode, new connections are rejected.
@changelog_1318_li
@changelog_1325_li
H2 Console: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '=null'.
@changelog_1319_li
@changelog_1326_li
New built-in functions RPAD and LPAD.
@changelog_1320_li
@changelog_1327_li
New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session.
@changelog_1321_li
@changelog_1328_li
The Ukrainian translation was not working in the last release. Fixed.
@changelog_1322_li
@changelog_1329_li
Creating many tables (many hundreds) was slow. Fixed.
@changelog_1323_li
@changelog_1330_li
Opening a database with many indexes (thousands) was slow. Fixed.
@changelog_1324_li
@changelog_1331_li
H2 Console / autocomplete: Ctrl+Space now shows the list in all modes.
@changelog_1325_li
@changelog_1332_li
The method Trigger.init has been changed: the parameters 'before' and 'type', have been added to the init method.
@changelog_1326_li
@changelog_1333_li
The performance has been improved for ResultSet methods with column name.
@changelog_1327_li
@changelog_1334_li
A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed.
@changelog_1328_li
The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar!
@changelog_1329_li
Improved debugging support: toString methods of most object now return a meaningful text.
@changelog_1330_li
The classes DbStarter and WebServlet have been moved to src/main.
@changelog_1331_li
The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement.
@changelog_1332_li
Loading classes and calling methods can be restricted using the new system property h2.allowedClasses.
@changelog_1333_li
The database could not be used in Java applets due to security exceptions. Fixed.
@changelog_1334_h2
Version 1.0.63 (2007-12-02)
@changelog_1335_li
The SecurePassword example has been improved.
The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar!
@changelog_1336_li
In time zones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed.
Improved debugging support: toString methods of most object now return a meaningful text.
@changelog_1337_li
The native fulltext search was not working properly after re-connecting.
The classes DbStarter and WebServlet have been moved to src/main.
@changelog_1338_li
Improved FTP server: now the PORT command is supported.
The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement.
@changelog_1339_li
Temporary views (FROM(...)) with UNION didn't work if nested. Fixed.
Loading classes and calling methods can be restricted using the new system property h2.allowedClasses.
@changelog_1340_li
Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin=true
@changelog_1341_li
The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot!
@changelog_1342_li
New function TABLE_DISTINCT.
@changelog_1343_li
Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly.
@changelog_1344_li
Certain setting in the Server didn't work (http://code.google.com/p/h2database/issues/detail?id=7).
The database could not be used in Java applets due to security exceptions. Fixed.
@download_1000_h1
Downloads
...
...
@@ -7115,52 +7103,52 @@ Index organized tables CREATE TABLE...(...) ORGANIZATION INDEX (store in data fi
Better space re-use in the files after deleting data: shrink the data file without closing the database (if the end of the file is empty)
@roadmap_1022_li
Full outer joins
Implement INSTEAD OF trigger (for views, tables, metadata tables).
@roadmap_1023_li
Support trigger on the tables information_schema.tables and ...columns
Full outer joins
@roadmap_1024_li
Test very large databases and LOBs (up to 256 GB)
Support trigger on the tables information_schema.tables and ...columns
@roadmap_1025_li
Support hints for the optimizer (which index to use, enforce the join order).
Test very large databases and LOBs (up to 256 GB)
@roadmap_1026_li
Change LOB mechanism (less files, keep index of lob files, point to files and row, delete unused files earlier, maybe bundle files into a tar file)
Support hints for the optimizer (which index to use, enforce the join order).
@roadmap_1027_li
Clustering: recovery needs to becomes fully automatic. Global write lock feature.
Change LOB mechanism (less files, keep index of lob files, point to files and row, delete unused files earlier, maybe bundle files into a tar file)
@roadmap_1028_li
Option for Java functions: [DETERMINISTIC] FOR ...
Clustering: recovery needs to becomes fully automatic. Global write lock feature.
@roadmap_1029_li
Support mixed clustering mode (one embedded, the other server mode)
Option for Java functions: [DETERMINISTIC] FOR ...
Migrate database tool (also from other database engines)
Add a migration guide (list differences between databases)
@roadmap_1035_li
Optimization: automatic index creation suggestion using the trace file?
Migrate database tool (also from other database engines)
@roadmap_1036_li
Compression performance: don't allocate buffers, compress / expand in to out buffer
Optimization: automatic index creation suggestion using the trace file?
@roadmap_1037_li
Sequence: add features [NO] MINVALUE, MAXVALUE, CYCLE
Compression performance: don't allocate buffers, compress / expand in to out buffer
@roadmap_1038_li
Rebuild index functionality (other than delete the index file)
...
...
@@ -7187,7 +7175,7 @@ Test with dbmonster (http://dbmonster.kernelpanic.pl/)
Test with dbcopy (http://dbcopyplugin.sourceforge.net)
@roadmap_1046_li
Find a tool to view large text file >100 MB, with find, page up and down (like less), truncate before / after
Find a tool to view large text file (larger than 100 MB), with find, page up and down (like less), truncate before / after
@roadmap_1047_li
Implement, test, document XAConnection and so on
...
...
@@ -7709,406 +7697,406 @@ Better support multiple processors for in-memory databases.
Access rights: remember the owner of an object. COMMENT: allow owner of object to change it.
@roadmap_1220_li
Implement INSTEAD OF trigger.
Access rights: Finer grained access control (grant access for specific functions)
@roadmap_1221_li
Access rights: Finer grained access control (grant access for specific functions)
Support N'text'
@roadmap_1222_li
Support N'text'
Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger
@roadmap_1223_li
Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger
Set a connection read only (Connection.setReadOnly)
@roadmap_1224_li
Set a connection read only (Connection.setReadOnly)
In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key
@roadmap_1225_li
In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key
Use JDK 1.4 file locking to create the lock file (but not yet by default); writing a system property to detect concurrent access from the same VM (different classloaders).
@roadmap_1226_li
Use JDK 1.4 file locking to create the lock file (but not yet by default); writing a system property to detect concurrent access from the same VM (different classloaders).
Support compatibility for jdbc:hsqldb:res:
@roadmap_1227_li
Support compatibility for jdbc:hsqldb:res:
In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true)
@roadmap_1228_li
In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true)
Provide a simple, lightweight O/R mapping tool
@roadmap_1229_li
Provide a simple, lightweight O/R mapping tool
Provide an Java SQL builder with standard and H2 syntax
@roadmap_1230_li
Provide an Java SQL builder with standard and H2 syntax
Trace: write OS, file system, JVM,... when opening the database
@roadmap_1231_li
Trace: write OS, file system, JVM,... when opening the database
Support indexes for views (probably requires materialized views)
@roadmap_1232_li
Support indexes for views (probably requires materialized views)
Document SET SEARCH_PATH, BEGIN, EXECUTE, parameters
@roadmap_1233_li
Document SET SEARCH_PATH, BEGIN, EXECUTE, parameters
Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6
@roadmap_1234_li
Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6
Server: use one listener (detect if the request comes from an PG or TCP client)
@roadmap_1235_li
Server: use one listener (detect if the request comes from an PG or TCP client)
Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility.
@roadmap_1236_li
Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility.
Support data type INTERVAL
@roadmap_1237_li
Support data type INTERVAL
NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ...
@roadmap_1238_li
NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ...
Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200
@roadmap_1239_li
Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200
Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER
@roadmap_1240_li
Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER
Triggers for metadata tables; use for PostgreSQL catalog
@roadmap_1268_li
Triggers for metadata tables; use for PostgreSQL catalog
Does the FTP server has problems with multithreading?
@roadmap_1269_li
Does the FTP server has problems with multithreading?
Write an article about SQLInjection (h2\src\docsrc\html\images\SQLInjection.txt)
@roadmap_1270_li
Write an article about SQLInjection (h2\src\docsrc\html\images\SQLInjection.txt)
Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
@roadmap_1271_li
Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
Send SQL Injection solution proposal to MySQL, Derby, HSQLDB,...
@roadmap_1272_li
Send SQL Injection solution proposal to MySQL, Derby, HSQLDB,...
Improve LOB in directories performance
@roadmap_1273_li
Improve LOB in directories performance
Optimize OR conditions: convert them to IN(...) if possible.
@roadmap_1274_li
Optimize OR conditions: convert them to IN(...) if possible.
Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
@roadmap_1275_li
Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
@roadmap_1276_li
HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
Web site: Rename Performance to Comparison [/Compatibility], move Comparison to Other Database Engines to Comparison, move Products that Work with H2 to Comparison, move Performance Tuning to Advanced Topics
@roadmap_1277_li
Web site: Rename Performance to Comparison [/Compatibility], move Comparison to Other Database Engines to Comparison, move Products that Work with H2 to Comparison, move Performance Tuning to Advanced Topics
Support JMX: Create an MBean for each database and server (support JConsole). See http://thedevcloud.blogspot.com/2008/10/displaying-hsql-database-manager-in.html
@roadmap_1278_li
Support JMX: Create an MBean for each database and server (support JConsole). See http://thedevcloud.blogspot.com/2008/10/displaying-hsql-database-manager-in.html
Translation: use ?? in help.csv
@roadmap_1279_li
Translation: use ?? in help.csv
Translated .pdf
@roadmap_1280_li
Translated .pdf
Cluster: hot deploy (adding a node on runtime)
@roadmap_1281_li
Cluster: hot deploy (adding a node on runtime)
Test with PostgreSQL Version 8.2
@roadmap_1282_li
Test with PostgreSQL Version 8.2
Website: Don't use frames.
@roadmap_1283_li
Website: Don't use frames.
Try again with Lobo browser (pure Java)
@roadmap_1284_li
Try again with Lobo browser (pure Java)
Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
@roadmap_1285_li
Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
RECOVER=2 to backup the database, run recovery, open the database
@roadmap_1286_li
RECOVER=2 to backup the database, run recovery, open the database
Recovery should work with encrypted databases
@roadmap_1287_li
Recovery should work with encrypted databases
Corruption: new error code, add help
@roadmap_1288_li
Corruption: new error code, add help
Space reuse: after init, scan all storages and free those that don't belong to a live database object
@roadmap_1289_li
Space reuse: after init, scan all storages and free those that don't belong to a live database object
SysProperties: change everything to H2_...
@roadmap_1290_li
SysProperties: change everything to H2_...
Use FilterIn / FilterOut putStream?
@roadmap_1291_li
Use FilterIn / FilterOut putStream?
Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
@roadmap_1292_li
Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
Support NOCACHE table option (Oracle)
@roadmap_1293_li
Support NOCACHE table option (Oracle)
Index usage for UPDATE ... WHERE .. IN (SELECT...)
@roadmap_1294_li
Index usage for UPDATE ... WHERE .. IN (SELECT...)
Add regular javadocs (using the default doclet, but another css) to the homepage.
@roadmap_1295_li
Add regular javadocs (using the default doclet, but another css) to the homepage.
The database should be kept open for a longer time when using the server mode.
@roadmap_1296_li
The database should be kept open for a longer time when using the server mode.
Javadocs: for each tool, add a copy & paste sample in the class level.
@roadmap_1297_li
Javadocs: for each tool, add a copy & paste sample in the class level.
Javadocs: add @author tags.
@roadmap_1298_li
Javadocs: add @author tags.
Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
@roadmap_1299_li
Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
MySQL compatibility: real SQL statements for SHOW TABLES, DESCRIBE TEST (then remove from Shell)
@roadmap_1300_li
MySQL compatibility: real SQL statements for SHOW TABLES, DESCRIBE TEST (then remove from Shell)
Use a default delay of 1 second before closing a database.
@roadmap_1301_li
Use a default delay of 1 second before closing a database.
Maven: upload source code and javadocs as well.
@roadmap_1302_li
Maven: upload source code and javadocs as well.
Write (log) to system table before adding to internal data structures.
@roadmap_1303_li
Write (log) to system table before adding to internal data structures.
Support very large deletes and updates.
@roadmap_1304_li
Support very large deletes and updates.
Doclet (javadocs): constructors are not listed.
@roadmap_1305_li
Doclet (javadocs): constructors are not listed.
Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
@roadmap_1306_li
Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
@roadmap_1307_li
Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular btree index solves the problem).
@roadmap_1308_li
MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular btree index solves the problem).
Support CREATE TEMPORARY LINKED TABLE.
@roadmap_1309_li
Support CREATE TEMPORARY LINKED TABLE.
MySQL compatibility: SELECT @variable := x FROM SYSTEM_RANGE(1, 50);
@roadmap_1310_li
MySQL compatibility: SELECT @variable := x FROM SYSTEM_RANGE(1, 50);
Oracle compatibility: support NLS_DATE_FORMAT.
@roadmap_1311_li
Oracle compatibility: support NLS_DATE_FORMAT.
Support flashback queries as in Oracle.
@roadmap_1312_li
Support flashback queries as in Oracle.
Import / Export of fixed with text files.
@roadmap_1313_li
Import / Export of fixed with text files.
Support for OUT parameters in user-defined procedures.
@roadmap_1314_li
Support for OUT parameters in user-defined procedures.
Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
@roadmap_1315_li
Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
@roadmap_1316_li
HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
@roadmap_1317_li
Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
Enable warning for 'Local variable declaration hides another field or variable'.
@roadmap_1318_li
Enable warning for 'Local variable declaration hides another field or variable'.
Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
@roadmap_1319_li
Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
Support merge join.
@roadmap_1320_li
Support merge join.
H2 Console: in-place autocomplete.
@roadmap_1321_li
H2 Console: in-place autocomplete.
MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
@roadmap_1322_li
MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
Oracle: support DECODE method (convert to CASE WHEN).
@roadmap_1323_li
Oracle: support DECODE method (convert to CASE WHEN).
Support large databases: split LOB (BLOB, CLOB) to multiple directories / disks (similar to tablespaces).
@roadmap_1324_li
Support large databases: split LOB (BLOB, CLOB) to multiple directories / disks (similar to tablespaces).
Support to assign a primary key index a user defined name.
@roadmap_1325_li
Support to assign a primary key index a user defined name.
Cluster: Add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
@roadmap_1326_li
Cluster: Add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
H2 Console: support configuration option for fixed width (monospace) font.
@roadmap_1327_li
H2 Console: support configuration option for fixed width (monospace) font.
Native fulltext search: support analyzers (specially for Chinese, Japanese).
@roadmap_1328_li
Native fulltext search: support analyzers (specially for Chinese, Japanese).
Automatically compact databases from time to time (as a background process).
@roadmap_1329_li
Automatically compact databases from time to time (as a background process).
Support SCOPE_IDENTITY().
@roadmap_1330_li
Support SCOPE_IDENTITY().
Support GRANT SELECT, UPDATE ON *.
@roadmap_1331_li
Support GRANT SELECT, UPDATE ON *.
Test Eclipse DTP.
@roadmap_1332_li
Test Eclipse DTP.
H2 Console: autocomplete: keep the previous setting
@roadmap_1333_li
H2 Console: autocomplete: keep the previous setting
executeBatch: option to stop at the first failed statement.
@roadmap_1334_li
executeBatch: option to stop at the first failed statement.
Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
@roadmap_1335_li
Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
Support Oracle ROWID (unique identifier for each row).
@roadmap_1336_li
Support Oracle ROWID (unique identifier for each row).
Server mode: Improve performance for batch updates.
@roadmap_1337_li
Server mode: Improve performance for batch updates.
Applets: Support read-only databases in a zip file (accessed as a resource).
@roadmap_1338_li
Applets: Support read-only databases in a zip file (accessed as a resource).
Long running queries / errors / trace system table.
@roadmap_1339_li
Long running queries / errors / trace system table.
H2 Console should support JaQu directly.
@roadmap_1340_li
H2 Console should support JaQu directly.
Option to copy the old version of each changed page once after a checkpoint.
@roadmap_1341_li
Option to copy the old version of each changed page once after a checkpoint.
H2 Console: support single file upload and directory download (optional).
@roadmap_1342_li
H2 Console: support single file upload and directory download (optional).
Document FTL_SEARCH, FTL_SEARCH_DATA.
@roadmap_1343_li
Document FTL_SEARCH, FTL_SEARCH_DATA.
Support DatabaseMetaData.insertsAreDetected: updatable result sets should detect inserts.
@roadmap_1344_li
Support DatabaseMetaData.insertsAreDetected: updatable result sets should detect inserts.
Auto-server: add option to define the IP address range or list.
@roadmap_1345_li
Auto-server: add option to define the IP address range or list.
Open a read-only database but don't share it with other connections. jdbc:h2:~/test;PRIVATE=TRUE
@roadmap_1346_li
Open a read-only database but don't share it with other connections. jdbc:h2:~/test;PRIVATE=TRUE
Index creation only using deterministic functions.
@roadmap_1347_li
Index creation only using deterministic functions.
Use http://recaptcha.net somehow to secure the Google Group.
@roadmap_1348_li
Use http://recaptcha.net somehow to secure the Google Group.
Support DELETE with TOP or LIMIT. See also: http://dev.mysql.com/doc/refman/5.1/de/delete.html
@roadmap_1349_li
Support DELETE with TOP or LIMIT. See also: http://dev.mysql.com/doc/refman/5.1/de/delete.html
Change the default for NULL || 'x' to return NULL
@roadmap_1350_li
Change the default for NULL || 'x' to return NULL
ANALYZE: Use a bloom filter for each indexed column to estimate count of distinct values.
@roadmap_1351_li
ANALYZE: Use a bloom filter for each indexed column to estimate count of distinct values.
ANALYZE: For unique indexes that allow null, count the number of null.
@roadmap_1352_li
ANALYZE: For unique indexes that allow null, count the number of null.
AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
@roadmap_1353_li
AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
#The French translation of the H2 Console has been improved by Olivier Parent. Thanks a lot!
#Aliases for built-in data types (such as MEDIUMBLOB which is an alias for BLOB) can now be re-mapped to another data type using CREATE DOMAIN. However main built-in data types (such as INTEGER) can not be re-mapped.
@changelog_1003_li
#There was a memory leak when creating and dropping tables and indexes in a loop (persistent database only).
#The Japanese translation has been completed by Masahiro Ikemoto. Thanks a lot!
@changelog_1004_li
#SET LOG 2 was not effective if executed after opening the database.
#Improved PostgreSQL compatibility for NEXTVAL and CURRVAL.
@changelog_1005_li
#Translating the H2 Console is now simpler.
#Less heap memory is needed when multiple databases are open at the same time: The memory reserve (used to rollback after out of memory) is now global and no longer allocated for each database separately.
@changelog_1006_li
#Common exception (error code 23*) are no longer written to the .trace.db file by default.
#New system property h2.browser to set the browser to use.
@changelog_1007_li
#To start the browser, java.awt.Desktop.browse is now used if available.
@changelog_1008_h2
#Version 1.1.102 (2008-10-24)
@changelog_1009_li
#The French translation of the H2 Console has been improved by Olivier Parent. Thanks a lot!
@changelog_1010_li
#There was a memory leak when creating and dropping tables and indexes in a loop (persistent database only).
@changelog_1011_li
#SET LOG 2 was not effective if executed after opening the database.
@changelog_1012_li
#Translating the H2 Console is now simpler.
@changelog_1013_li
#Common exception (error code 23*) are no longer written to the .trace.db file by default.
@changelog_1014_li
#In-memory databases don't write LOBs to files any longer.
@changelog_1008_li
@changelog_1015_li
#Self referencing constraints didn't restrict deleting rows that reference itself if there is another row that references it.
@changelog_1009_li
@changelog_1016_li
#ResultSetMetaData.getColumnName now returns the alias name except for columns.
@changelog_1010_li
@changelog_1017_li
#Temporary files are now deleted when the database is closed, even if they were not garbage collected so far.
@changelog_1011_h2
@changelog_1018_h2
#Version 1.1.101 (2008-10-17)
@changelog_1012_li
@changelog_1019_li
#Errors with code 42000 - 42999 are no longer written to the trace file by default.
@changelog_1013_li
@changelog_1020_li
#Queries with more than 10 tables are now faster.
@changelog_1014_li
@changelog_1021_li
#Opening a connection with AUTO_SERVER=TRUE is now fast when the database is already open in another process (less than 0.01 seconds instead of 2 seconds).
@changelog_1015_li
@changelog_1022_li
#IF [NOT] EXISTS is supported for named constraints in ALTER TABLE ... ADD/DROP CONSTRAINT.
@changelog_1016_li
@changelog_1023_li
#The error messages have been translated to Spanish by Dario V. Fassi. Thanks a lot!
@changelog_1017_li
@changelog_1024_li
#Linked tables: the automatic connection sharing didn't work. Actually the system property h2.shareLinkedConnections was working in the opposite direction: it was disabled when set to true. Now it works as expected.
@changelog_1018_li
@changelog_1025_li
#Opening large database is now faster.
@changelog_1019_li
@changelog_1026_li
#New system property h2.socketConnectTimeout, the timeout in milliseconds to connect to a server. The default is 2000 (2 seconds).
@changelog_1020_li
@changelog_1027_li
#The wrong parameters were bound to subqueries with parameters, specially when using IN(SELECT ...) and IN(...).
@changelog_1021_li
@changelog_1028_li
#Unset parameters were not detected when the query was re-compiled.
@changelog_1022_li
@changelog_1029_li
#New functions ISO_YEAR, ISO_WEEK, ISO_DAY_OF_WEEK. Thanks a lot to Robert Rathsack for implementing those!
@changelog_1023_li
@changelog_1030_li
#The date functions DAYOFYEAR, DAYOFMONTH, DAYOFWEEK are now called DAY_OF_YEAR, DAY_OF_MONTH, DAY_OF_WEEK (the old names still work).
@changelog_1024_li
@changelog_1031_li
#An out of memory error while deleting or updating many rows could result in a strange exception.
@changelog_1025_li
@changelog_1032_li
#Linked tables: compatibility with MS SQL Server has been improved.
@changelog_1026_li
@changelog_1033_li
#Renaming tables that have foreign keys with cascade didn't work correctly.
@changelog_1027_li
@changelog_1034_li
#The auto-reconnect feature didn't work when using the auto-server mode. Fixed.
@changelog_1028_li
@changelog_1035_li
#Fulltext search: new method FT_DROP_INDEX.
@changelog_1029_li
@changelog_1036_li
#The optimization to group using an index didn't work in some cases in version 1.1 (see also system property h2.optimizeGroupSorted).
@changelog_1030_li
@changelog_1037_li
#OSGi meta data is included in the manifest file. An OSGi BundleActivator is included: it loads the database driver when starting the bundle, and unloads it when stopping the bundle.
@changelog_1031_li
@changelog_1038_li
#The default value for MAX_MEMORY_UNDO is now 50000.
@changelog_1032_li
@changelog_1039_li
#For alias columns, ResultSetMetaData.getTableName() and getColumnName() now return the real table and column name in the default mode.
@changelog_1033_li
@changelog_1040_li
#In SQL scripts created with SCRIPT TO, schemas are now only created if they don't exist yet.
@changelog_1034_li
@changelog_1041_li
#After re-connecting to a database, the database event listener (if set) is informed about it.
@changelog_1035_li
@changelog_1042_li
#Local temporary tables now support indexes. Thanks a lot to Matt Roy!
@changelog_1036_li
@changelog_1043_li
#RUNSCRIPT no longer uses a temporary file.
@changelog_1037_li
@changelog_1044_li
#New system table INFORMATION_SCHEMA.SESSION_STATE containing the SQL statements that make up the session state. The list currently contains variables (SET @..) and local temporary tables (without data).
@changelog_1038_li
@changelog_1045_li
#After an automatic re-connect, part of the session state stays (the part that is stored in the SESSION_STATE table).
@changelog_1039_li
@changelog_1046_li
#The build didn't work if the directory temp didn't exist before.
@changelog_1040_li
@changelog_1047_li
#New system property h2.maxReconnect (default 3) to limit the number of re-connects for the same SQL statement (this is usually only important for SHUTDOWN).
@changelog_1041_li
@changelog_1048_li
#WHERE .. IN (SELECT ...) could throw a NullPointerException.
@changelog_1042_li
@changelog_1049_li
#Improved Glassfish / Toplink support in H2Platform thanks to Marcio Borges from Brazil. Thanks a lot!
@changelog_1043_h2
@changelog_1050_h2
#Version 1.1.100 (2008-10-04)
@changelog_1044_li
@changelog_1051_li
#In version 1.1, the following system properties are now enabled by default: h2.lobFilesInDirectories, h2.optimizeGroupSorted, h2.optimizeInJoin, h2.shareLinkedConnections
@changelog_1045_li
@changelog_1052_li
#The H2 Console tool now works with the JDBC-ODBC bridge.
@changelog_1046_li
@changelog_1053_li
#The H2 Console tool now supports command line options to start things separately.
@changelog_1047_li
@changelog_1054_li
#Large objects did not work for in-memory databases in server mode in Linux.
@changelog_1048_li
@changelog_1055_li
#Connections from a local address other than 'localhost' were not allowed if remote connections were disabled. This was always a problem, but only got visible in the last release because the server no longer connects to 'localhost' if networked.
@changelog_1049_li
@changelog_1056_li
#The h2console.war can now be built using the Java build.
@changelog_1050_li
@changelog_1057_li
#By default, databases are shared in the same process. For read-only databases this causes unnecessary synchronization, but safes memory. If you want that each connection opens its own database, append ;OPEN_NEW=TRUE to the database URL.
@changelog_1051_li
@changelog_1058_li
#New auto-reconnect feature will cause the JDBC driver to reconnect to the database if the connection is lost. To enable, append ;AUTO_RECONNECT=TRUE to the database URL. This is specially helpful when using AUTO_SERVER. AUTO_SERVER automatically uses auto-reconnect.
@changelog_1052_li
@changelog_1059_li
#CreateCluster: the property 'serverlist' is now called 'serverList'.
@changelog_1053_li
@changelog_1060_li
#The ConvertTraceFile tool could not parse some files because the trace mechanism did not encode prepared statement parameters.
@changelog_1054_li
@changelog_1061_li
#Databases names can now be one character long (the minimum size used to be 2 characters).
@changelog_1055_h2
@changelog_1062_h2
#Version 1.0.79 (2008-09-26)
@changelog_1056_li
@changelog_1063_li
#Linked tables that point to the same database can now share the connection within the same database. Access to the same connection is serialized. To enable this feature, set the system property h2.shareLinkedConnections to true.
@changelog_1057_li
@changelog_1064_li
#Multiple processes can now access the same database without having to explicitly start the server. To do that, append ;AUTO_SERVER=TRUE to the database URL. In this case, the server is started automatically if the connection is in embedded mode, and the server mode is used if a server is running. If the process that opened the first connection is closed, the other client need to reconnect (there is no automatic re-connect so far). Remote connections are allowed, but only to this database.
@changelog_1058_li
@changelog_1065_li
#The server tool now displays the correct IP address if networked.
@changelog_1059_li
@changelog_1066_li
#Can now start a TCP server with port 0 (automatically select a port).
@changelog_1060_li
@changelog_1067_li
#Result sets with just a unique index can now be updated (previously a primary key was required).
@changelog_1061_li
@changelog_1068_li
#LINKED TABLE: the schema name can now be set. When multiple tables exist in different schema, and the schema name is not set, an exception is thrown.
@changelog_1062_li
@changelog_1069_li
#LINKED TABLE: worked around a bug in Oracle with the CHAR data type.
@changelog_1063_li
@changelog_1070_li
#Faster hash code calculation for large binary arrays.
@changelog_1064_li
@changelog_1071_li
#Faster storage re-use algorithm thanks to Greg Dhuse from cleversafe.com.
@changelog_1065_li
@changelog_1072_li
#The database supports the SHOW command for better MySQL and PostgreSQL compatibility.
@changelog_1066_li
@changelog_1073_li
#The H2 Console now abbreviates large texts in results.
@changelog_1067_li
@changelog_1074_li
#Multiple UNION queries could not be used in derived tables.
@changelog_1068_li
@changelog_1075_li
#Linked tables can now be read-only.
@changelog_1069_li
@changelog_1076_li
#Temporary linked tables are now supported.
@changelog_1070_li
@changelog_1077_li
#It was possible to create tables in read-only databases.
@changelog_1071_li
@changelog_1078_li
#SET SCHEMA_SEARCH_PATH is now documented.
@changelog_1072_li
@changelog_1079_li
#SET SCHEMA did not work for views.
@changelog_1073_li
@changelog_1080_li
#Row level locking for MVCC is now enabled. The exception 'Concurrent update in table ...' is still thrown, but only after the lock timeout.
@changelog_1074_li
@changelog_1081_li
#The maximum log file size setting was ignored for large databases.
@changelog_1075_li
@changelog_1082_li
#Multi-Version Concurrency (MVCC) may no longer be used when using the multi-threaded kernel feature (MULTI_THREADED). An exception is thrown when trying to connect with both settings. Additional synchronization is required before those features can be used together.
@changelog_1076_li
@changelog_1083_li
#The data type JAVA_OBJECT could not be used in updatable result sets.
@changelog_1077_li
@changelog_1084_li
#The system property h2.optimizeInJoin did not work correctly.
@changelog_1078_li
@changelog_1085_li
#Conditions such as ID=? AND ID>? were slow.
@changelog_1079_h2
@changelog_1086_h2
#Version 1.0.78 (2008-08-28)
@changelog_1080_li
@changelog_1087_li
#The documentation no longer uses a frameset (except the Javadocs).
@changelog_1081_li
@changelog_1088_li
#When using DB_CLOSE_DELAY, sometimes a NullPointerException is thrown when the database is opened almost at the same time as it is closed automatically. Thanks a lot to Dmitry Pekar for finding this!
@changelog_1082_li
@changelog_1089_li
#Java methods with variable number of parameters can now be used (for Java 1.5 or newer).
@changelog_1083_li
@changelog_1090_li
#The Japanese translation has been improved by Masahiro Ikemoto. Thanks a lot!
@changelog_1084_li
@changelog_1091_li
#The H2 Console replaced an empty user name with a single space.
@changelog_1085_li
@changelog_1092_li
#The build target 'build jarSmall' now includes the embedded database.
@changelog_1086_li
@changelog_1093_li
#JdbcDataSource now keeps the password in a char array where possible.
@changelog_1087_li
@changelog_1094_li
#ResultSet.absolute did not always work with large result sets.
@changelog_1088_li
@changelog_1095_li
#Column aliases can now be used in GROUP BY and HAVING.
@changelog_1089_li
@changelog_1096_li
#Jason Brittain has contributed MySQL date functions. Thanks a lot! They are not in the h2.jar file currently, but in src/tools/org/h2/mode/FunctionsMySQL.java. To install, add this class to the classpath and call FunctionsMySQL.register(conn) in the Java code.
@changelog_1090_h2
@changelog_1097_h2
#Version 1.0.77 (2008-08-16)
@changelog_1091_li
@changelog_1098_li
#JaQu is now using prepared statements and supports Date, Time, Timestamp.
@changelog_1092_li
@changelog_1099_li
#When using remote in-memory databases, large LOB objects did not work.
@changelog_1093_li
@changelog_1100_li
#Timestamp columns such as TIMESTAMP(6) were not compatible to other database.
@changelog_1094_li
@changelog_1101_li
#Opening a large database was slow if there was a problem opening the previous time.
@changelog_1095_li
@changelog_1102_li
#NOT IN(SELECT ...) was incorrect if the subquery returns no rows.
@changelog_1096_li
@changelog_1103_li
#CREATE TABLE AS SELECT did not work correctly in the multi-version concurrency mode.
@changelog_1097_li
@changelog_1104_li
#Support a comma before closing a list, as in: create table test(id int,)
@changelog_1098_li
@changelog_1105_li
#MySQL compatibility: linked tables had lower case column names on some systems.
@changelog_1099_li
@changelog_1106_li
#DB2 compatibility: the DB2 fetch-first-clause is supported.
@changelog_1100_li
@changelog_1107_li
#Oracle compatibility: old style outer join syntax using (+) did work correctly sometimes.
@changelog_1101_li
@changelog_1108_li
#ResultSet.setFetchSize is now supported.
@changelog_1102_li
@changelog_1109_li
#It has been reported that when using Install4j on some Linux systems and enabling the 'pack200' option, the h2.jar becomes corrupted by the install process, causing application failure. A workaround is to add an empty file h2.jar.nopack next to the h2.jar file. The reason for this problem is not known.
@changelog_1103_h2
@changelog_1110_h2
#Version 1.0.76 (2008-07-27)
@changelog_1104_li
@changelog_1111_li
#The comment of a domain (user defined data type) is now used as the default column comment when creating a column with this domain.
@changelog_1105_li
@changelog_1112_li
#Invalid database names are now detected and a better error message is thrown.
@changelog_1106_li
@changelog_1113_li
#ResultSetMetaData.getColumnClassName now returns the correct class name for BLOB and CLOB.
@changelog_1107_li
@changelog_1114_li
#Fixed the Oracle mode: Oracle allows multiple rows only where all columns of the unique index are NULL.
@changelog_1108_li
@changelog_1115_li
#There is a problem with Hibernate when using Boolean columns. A patch for Hibernate has been submitted at http://opensource.atlassian.com/projects/hibernate/browse/HHH-3401
@changelog_1109_li
@changelog_1116_li
#ORDER BY on tableName.columnName didn't work correctly if the column name was also used as an alias.
@changelog_1110_li
@changelog_1117_li
#H2 Console: The progress display when opening a database has been improved.
@changelog_1111_li
@changelog_1118_li
#The error message when the server doesn't start has been improved.
@changelog_1112_li
@changelog_1119_li
#Key values can now be changed in updatable result sets.
@changelog_1113_li
@changelog_1120_li
#Changes in updatable result sets are now visible even when resetting the result set.
@changelog_1114_li
@changelog_1121_li
#Temporary files were sometimes deleted too late when executing large insert, update, or delete operations.
@changelog_1115_li
@changelog_1122_li
#The database file was growing after deleting many rows, and after large update operations.
@changelog_1116_h2
@changelog_1123_h2
#Version 1.0.75 (2008-07-14)
@changelog_1117_li
@changelog_1124_li
#Multi version concurrency (MVCC): when a row was updated or deleted, but this change was rolled back, the row was not visible by other sessions if no index was used to access it. Fixed.
@changelog_1118_li
@changelog_1125_li
#Views with multiple joined tables (where one was an outer join) couldn't be used in some cases. Fixed.
@changelog_1119_li
@changelog_1126_li
#The CSVREAD method did not process NULL correctly when using a whitespace field separator.
@changelog_1120_li
@changelog_1127_li
#Fixed the Oracle mode: Oracle allows multiple rows with NULL in a unique index.
@changelog_1121_li
@changelog_1128_li
#Running out of memory could result in incomplete transactions or corrupted databases. Fixed.
@changelog_1122_li
@changelog_1129_li
#When using order by in a query that uses the same table multiple times, the order could be incorrect. Fixed.
@changelog_1123_li
@changelog_1130_li
#Referential constraint checking improvement: now the constraint is only checked if the key column values change.
@changelog_1124_li
@changelog_1131_li
#Some database metadata calls returned the wrong data type for DATA_TYPE columns.
@changelog_1125_li
@changelog_1132_li
#The Lucene fulltext index was empty when opening a database with fulltext index enabled, and re-indexing it didn't work. Fixed.
@changelog_1126_li
@changelog_1133_li
#The character '$' could not be used in identifier names (table name, column names and so on). Fixed.
@changelog_1127_li
@changelog_1134_li
#The new method org.h2.tools.Server.startWebServer(conn) starts the H2 Console to inspect a database while debugging.
@changelog_1128_li
@changelog_1135_li
#Stopping a WebServer didn't always work. Fixed.
@changelog_1129_h2
@changelog_1136_h2
#Version 1.0.74 (2008-06-21)
@changelog_1130_li
@changelog_1137_li
#Work on row level locking has been started (but there is nothing usable yet).
@changelog_1131_li
@changelog_1138_li
#JaQu (Java Query), a tool similar to LINQ (Language Integrated Query; from Microsoft) is now included under src/tools/org/h2/jaqu. A small sample application is included under src/test/org/h2/test/jaqu.
@changelog_1132_li
@changelog_1139_li
#The source code is now switched to Java 1.6 by default. To switch back to Java 1.4, run 'build compile'. The h2.jar file is still Java 1.4.
@changelog_1133_li
@changelog_1140_li
#The ChangePassword tool is now called ChangeFileEncryption.
@changelog_1134_li
@changelog_1141_li
#It is no longer allowed to create columns with the data type NULL. Also, it is no longer allowed to convert a column to the data type NULL. This was possible before but caused data loss.
@changelog_1135_li
@changelog_1142_li
#When using computed columns or default values with a different data type than the column data type, a class cast exception could occur. Fixed.
@changelog_1136_li
@changelog_1143_li
#Opening databases larger than 1 GB was sometimes very slow if a lot of data was deleted previously. Fixed.
@changelog_1137_li
@changelog_1144_li
#RUNSCRIPT could throw a NullPointerException if the script name was an expression.
@changelog_1138_li
@changelog_1145_li
#Improved compatibility. New compatibility modes for Oracle and Derby. New compatibility flag uniqueIndexNullDistinct to only allow one row with 'NULL' in a unique index. This flag is enabled for Derby, Oracle, MSSQLServer, and HSQLDB.
@changelog_1139_li
@changelog_1146_li
#Linked tables: To view the statements that are executed against the target table, set the trace level to 3.
@changelog_1140_li
@changelog_1147_li
#RunScript tool: new options to show and check the results of queries.
@changelog_1141_li
@changelog_1148_li
#Deadlocks are now detected. One transaction is rolled back automatically.
@changelog_1142_li
@changelog_1149_li
#The Lucene fulltext index was always re-created when opening a database with fulltext index enabled.
@changelog_1143_li
@changelog_1150_li
#Support for overloaded Java methods. A user defined function can now be bound to multiple Java methods, if the Java methods have the same name but a different number of parameters. Thanks to Gary Tong for providing a patch!
@changelog_1144_h2
@changelog_1151_h2
#Version 1.0.73 (2008-05-31)
@changelog_1145_li
@changelog_1152_li
#ParameterMetaData now returns the right data type for most conditions, as in WHERE ID=?.
@changelog_1146_li
@changelog_1153_li
#The table SYSTEM_RANGE now supports expressions and parameters.
@changelog_1147_li
@changelog_1154_li
#New column INFORMATION_SCHEMA.CONSTRAINTS.UNIQUE_INDEX_NAME that contains the name of the unique index used to enforce this constraint, if there is such an index.
@changelog_1148_li
@changelog_1155_li
#SET QUERY_TIMEOUT and Statement.setQueryTimeout no longer commits a transaction. The same applies to SET @VARIABLE, SET LOCK_TIMEOUT, SET TRACE_LEVEL_*, SET THROTTLE, and SET PATH.
@changelog_1149_li
@changelog_1156_li
#The SCRIPT command does now emit IF NOT EXISTS for CREATE ROLE.
@changelog_1150_li
@changelog_1157_li
#MySQL compatibility: auto_increment column are no longer automatically converted to primary key columns.
@changelog_1151_li
@changelog_1158_li
#PostgreSQL compatibility: support for BOOL_OR and BOOL_AND aggregate functions.
@changelog_1152_li
@changelog_1159_li
#Negative scale values for DECIMAL or NUMBER columns are now supported in regular tables and in linked tables.
@changelog_1153_li
@changelog_1160_li
#A role or right can now be granted or revoked multiple times without getting an exception.
@changelog_1154_li
@changelog_1161_li
#Infinite numbers in SQL scripts are listed as POWER(0, -1)), negative infinite as (-POWER(0, -1)), and NaN (not a number) as SQRT(-1).
@changelog_1155_li
@changelog_1162_li
#The special double and float values 'NaN' (not a number) did not work correctly when sorting or comparing.
@changelog_1156_li
@changelog_1163_li
#The fulltext search did not support CLOB data types.
@changelog_1157_li
@changelog_1164_li
#If the drive with the database files was disconnected or unmounted while writing, sometimes a stack overflow exception was thrown instead of a IO exception.
@changelog_1158_li
@changelog_1165_li
#The H2 Console could not be shut down from within the tool if the browser supports keepAlive (most browsers do).
@changelog_1159_li
@changelog_1166_li
#If the password was passed as a char array, it was kept in an internal buffer longer than required. Theoretically the password could have been stolen if the main memory was swapped to disk before the garbage collection was run.
@changelog_1160_h2
@changelog_1167_h2
#Version 1.0.72 (2008-05-10)
@changelog_1161_li
@changelog_1168_li
#Some databases could not be opened when appending ;RECOVER=1 to the database URL.
@changelog_1162_li
@changelog_1169_li
#The Japanese translation of the error messages and the H2 Console has been completed by Masahiro Ikemoto (Arizona Design Inc.)
@changelog_1163_li
@changelog_1170_li
#Updates made to updatable rows are now visible within the same result set. DatabaseMetaData.ownUpdatesAreVisible now returns true.
@changelog_1164_li
@changelog_1171_li
#ParameterMetaData now returns the correct data for INSERT and UPDATE statements.
@changelog_1165_li
@changelog_1172_li
#H2 Shell: DESCRIBE now supports an schema name.
@changelog_1166_li
@changelog_1173_li
#A subset of the PostgreSQL 'dollar quoting' feature is now supported.
@changelog_1167_li
@changelog_1174_li
#SLF4J is now supported by using adding TRACE_LEVEL_FILE=4 to the database URL.
@changelog_1168_li
@changelog_1175_li
#The recovery tool did not work if the table name contained spaces or if there was a comment on the table.
@changelog_1169_li
@changelog_1176_li
#Triggers are no longer executed when changing the table structure (ALTER TABLE).
@changelog_1170_li
@changelog_1177_li
#When setting BLOB or CLOB values larger than 65 KB using a remote connection, temporary files were kept on the client longer than required (until the connection was closed or the object is garbage collected). Now they are removed as soon as the PreparedStatement is closed, or when the value is overwritten.
@changelog_1171_li
@changelog_1178_li
#Statements can now be canceled remotely (when using remote connections).
@changelog_1172_li
@changelog_1179_li
#The Shell tool now uses java.io.Console to read the password when using JDK 1.6
@changelog_1173_li
@changelog_1180_li
#When using read-only databases and setting LOG=2, an exception was written to the trace file when closing the database. Fixed.
@changelog_1174_h2
@changelog_1181_h2
#Version 1.0.71 (2008-04-25)
@changelog_1175_li
@changelog_1182_li
#H2 is now dual-licensed under the Eclipse Public License (EPL) and the old 'H2 License' (which is basically MPL).
@changelog_1176_li
@changelog_1183_li
#Sometimes an exception 'File ID mismatch' or 'try to add a record twice' occurred after large records (8 KB or larger) are updated or deleted. See also http://code.google.com/p/h2database/issues/detail?id=22
@changelog_1177_li
@changelog_1184_li
#H2 Console: The tools can now be translated (it didn't work in the last release).
@changelog_1178_li
@changelog_1185_li
#New traditional Chinese translation. Thanks a lot to Derek Chao!
@changelog_1179_li
@changelog_1186_li
#Indexes were not used when enabling the optimization for IN(SELECT...) (system property h2.optimizeInJoin).
@changelog_1180_h2
@changelog_1187_h2
#Version 1.0.70 (2008-04-20)
@changelog_1181_li
@changelog_1188_li
#The plan is to dual-license H2. The additional license is EPL (Eclipse Public License). The current license (MPL, Mozilla Public License) will stay. Current users are not affected because they can keep MPL. EPL is very similar to MPL, the only bigger difference is related to patents (EPL is a bit more business friendly in this regard). See also http://opensource.org/licenses/eclipse-1.0.php, http://www.eclipse.org/legal/eplfaq.php (FAQ), http://blogs.zdnet.com/Burnette/?p=131
@changelog_1182_li
@changelog_1189_li
#Multi version concurrency (MVCC): when a row was updated, and the updated column was not indexed, this update was visible sometimes for other sessions even if it was not committed.
@changelog_1183_li
@changelog_1190_li
#Calling SHUTDOWN on one connection and starting a query on another connection concurrently could result in a Java level deadlock.
@changelog_1184_li
@changelog_1191_li
#New system property h2.enableAnonymousSSL (default: true) to enable anonymous SSL connections.
@changelog_1185_li
@changelog_1192_li
#The precision if SUBSTR is now calculated if possible.
@changelog_1186_li
@changelog_1193_li
#The autocomplete in the H2 Console has been improved a bit.
@changelog_1187_li
@changelog_1194_li
#The tools in the H2 Console are now translatable.
@changelog_1188_li
@changelog_1195_li
#The servlet and lucene jar files are now automatically downloaded when building.
@changelog_1189_li
@changelog_1196_li
#The code switch tool has been replaced by a simpler tool called SwitchSource that just uses find and replace.
@changelog_1190_li
@changelog_1197_li
#Started to write a Ant replacement ('JAnt') that uses pure Java build definitions. Advantages: ability to debug the build, extensible, flexible, no XML, a bit faster. Future plan: support creating custom h2 distributions (for embedded use). Maybe create a new project 'Jant' or 'Javen' if other people are interested.
@changelog_1191_li
@changelog_1198_li
#The jar file is now about 10% smaller because the variable debugging info is no longer included. The source file and line number debugging info is still included. If required, the jar file size of the full version can be further reduced to about 720 KB using 'build jarSmall' or even more by removing unneeded components.
@changelog_1192_li
@changelog_1199_li
#Added shell scripts run.sh and build.sh. chmod +x is required, but otherwise it should work. Feedback or improvements are welcome!
@changelog_1193_li
@changelog_1200_li
#Databases in zip files: large queries are now supported. Temp files are created in the temp directory if required. The documentation how to create the zip file has been corrected.
#The Japanese translation of the error messages and the H2 Console has been improved. Thanks a lot to Masahiro IKEMOTO.
@changelog_1196_li
@changelog_1203_li
#Optimization for MIN() and MAX() when using MVCC.
@changelog_1197_li
@changelog_1204_li
#To protect against remote brute force password attacks, the delay after each unsuccessful login now gets double as long. New system properties h2.delayWrongPasswordMin and h2.delayWrongPasswordMax.
@changelog_1198_li
@changelog_1205_li
#After setting the query timeout and then resetting it, the next query would still timeout. Fixed.
@changelog_1199_li
@changelog_1206_li
#Adding a IDENTITY column to a table with data threw a lock timeout.
@changelog_1200_li
@changelog_1207_li
#OutOfMemoryError could occur when using EXISTS or IN(SELECT ..).
@changelog_1201_li
@changelog_1208_li
#The built-in connection pool is not called JdbcConnectionPool. The API and documentation has been changed.
@changelog_1202_li
@changelog_1209_li
#The ConvertTraceFile tool now generates SQL statement statistics at the end of the SQL script file (similar to the profiling data generated when using java -Xrunhprof).
@changelog_1203_li
@changelog_1210_li
#Nested joins are now supported (A JOIN B JOIN C ON .. ON ..)
@changelog_1204_h2
@changelog_1211_h2
#Version 1.0.69 (2008-03-29)
@changelog_1205_li
@changelog_1212_li
#Most command line tools can now be called from within the H2 Console.
@changelog_1206_li
@changelog_1213_li
#A new Shell tools is now included (org.h2.tools.Shell) to query a database from the command line.
@changelog_1207_li
@changelog_1214_li
#The command line options in the tools have changed: instead of '-log true' now '-trace' is used. Also, '-ifExists', '-tcpSSL' and '-tcpAllowOthers' and so on have changed: now the 'true' is no longer needed. The old behavior is still supported.
@changelog_1208_li
@changelog_1215_li
#New system property h2.sortNullsHigh to invert the default sorting behavior for NULL. The default didn't change.
@changelog_1209_li
@changelog_1216_li
#Performance was very slow when using LOG=2 and deleting or updating all rows of a table in a loop. Fixed.
@changelog_1210_li
@changelog_1217_li
#ALTER TABLE or CREATE TABLE now support parameters for the password field.
@changelog_1211_li
@changelog_1218_li
#The linear hash has been removed. It was always slower than the b-tree index, and there were some bugs that would be hard to fix.
@changelog_1212_li
@changelog_1219_li
#TRACE_LEVEL_ settings are no longer persistent. This was a problem when database initialization code caused a lot of trace output.
@changelog_1213_li
@changelog_1220_li
#Fulltext search (native implementation): The words table is no longer an in-memory table because this caused memory problems in some cases.
@changelog_1214_li
@changelog_1221_li
#It was possible to create a role with the name as an existing user (but not vice versa). This is not allowed any more.
@changelog_1215_li
@changelog_1222_li
#The recovery tool didn't work correctly for tables without rows.
@changelog_1216_li
@changelog_1223_li
#For years below 1, the YEAR method didn't return the correct value, and the conversion from date and timestamp to varchar was incorrect.
@changelog_1217_li
@changelog_1224_li
#CSVWRITE caused a NullPointerException when not specifying a nullString.
@changelog_1218_li
@changelog_1225_li
#When a log file switch occurred just after a truncate table or drop table statement, the database could not be started normally (RECOVER=1 was required). Fixed.
@changelog_1219_li
@changelog_1226_li
#When a log file switch occurred in the middle of a sequence flush (sequences are only flushed every 32 values by default), the sequence value was lost. Fixed.
@changelog_1220_li
@changelog_1227_li
#Altering a sequence didn't unlock the system table when autocommit switched off.
@changelog_1221_h2
@changelog_1228_h2
#Version 1.0.68 (2008-03-18)
@changelog_1222_li
@changelog_1229_li
#Very large SELECT DISTINCT and UNION EXCEPT queries are now supported, however this feature is disabled by default. To enable it, set the system property h2.maxMemoryRowsDistinct to a lower value, for example 10000.
@changelog_1223_li
@changelog_1230_li
#A error is now thrown when trying to call a method inside a trigger that implicitly commits the current transaction, if an object is locked.
@changelog_1224_li
@changelog_1231_li
#Unused LOB files were deleted much too late. Now they are deleted if no longer referenced in memory.
@changelog_1225_li
@changelog_1232_li
#ALTER SEQUENCE and ALTER TABLE ALTER COLUMN RESTART can now be used inside a transaction.
@changelog_1226_li
@changelog_1233_li
#New system property h2.aliasColumnName. When enabled, aliased columns (as in SELECT ID AS I FROM TEST) return the real table and column name in ResultSetMetaData.getTableName() and getColumnName(). This is disabled by default for compatibility with other databases (HSQLDB, Apache Derby, PostgreSQL, some version of MySQL). In version 1.1 this setting will be enabled.
@changelog_1227_li
@changelog_1234_li
#When using encrypted databases, and using the wrong file password, the log file was renamed if the database was not already open. Fixed.
@changelog_1228_li
@changelog_1235_li
#Improved performance when using lob files in directories (however this is still disabled by default)
@changelog_1229_li
@changelog_1236_li
#H2 Console: autocomplete didn't work with very large scripts. Fixed.
@changelog_1230_li
@changelog_1237_li
#Fulltext search: new method SEARCH_DATA that returns the column names and primary keys as arrays.
@changelog_1231_li
@changelog_1238_li
#New experimental optimization for GROUP BY queries if an index can be used that matches the group by columns. To enable this optimization, set the system property h2.optimizeGroupSorted to true.
@changelog_1232_li
@changelog_1239_li
#When using multi-version concurrency (MVCC=TRUE), duplicate rows could appear in the result set when running queries with uncommitted changes in the same session.
@changelog_1233_li
@changelog_1240_li
#H2 Console: remote connections were very slow because getHostName/getRemoteHost was used. Fixed (now using getHostAddress/getRemoteAddr.
@changelog_1234_li
@changelog_1241_li
#H2 Console: on Linux, Firefox, Konqueror, or Opera (in this order) are now started if available. This has been tested on Ubuntu.
@changelog_1235_li
@changelog_1242_li
#H2 Console: the start window works better with IKVM
@changelog_1236_li
@changelog_1243_li
#H2 Console: improved compatibility with Safari (Safari requires keep-alive)
@changelog_1237_li
@changelog_1244_li
#Random: the process didn't stop if generating the random seed using the standard way (SecureRandom.generateSeed) was very slow. Now using a daemon thread to avoid this problem.
@changelog_1238_li
@changelog_1245_li
#SELECT UNION with a different number of ORDER BY columns did throw an ArrayIndexOutOfBoundsException.
@changelog_1239_li
@changelog_1246_li
#When using a view, the column precision was changed to the default scale for some data types.
@changelog_1240_li
@changelog_1247_li
#CSVWRITE now supports a 'null string' that is used for parsing and writing NULL.
@changelog_1241_li
@changelog_1248_li
#Some long running queries could not be canceled.
@changelog_1242_li
@changelog_1249_li
#Queries with many outer join tables were very slow. Fixed.
@changelog_1243_li
@changelog_1250_li
#The performance of text comparison has been improved when using locale sensitive string comparison (SET COLLATOR). Now CollationKey is used with a LRU cache. The default cache size is 10000, and can be changed using the system property h2.collatorCacheSize. Use 0 to disable the cache.
@changelog_1244_li
@changelog_1251_li
#UPDATE SET column=DEFAULT is now supported.
@changelog_1245_h2
@changelog_1252_h2
#Version 1.0.67 (2008-02-22)
@changelog_1246_li
@changelog_1253_li
#New function FILE_READ to read a file or from an URL. Both binary and text data is supported.
@changelog_1247_li
@changelog_1254_li
#CREATE TABLE AS SELECT now supports specifying the column list and data types.
@changelog_1248_li
@changelog_1255_li
#Connecting to a TCP server and at shutting it down at the same time could cause a Java level deadlock.
@changelog_1249_li
@changelog_1256_li
#A user now has all rights on his own local temporary tables.
@changelog_1250_li
@changelog_1257_li
#The CSV tool now supports a custom lineSeparator.
@changelog_1251_li
@changelog_1258_li
#When using multiple connections, empty space was reused too early sometimes. This could corrupt the database when recovering.
@changelog_1252_li
@changelog_1259_li
#The H2 Console has been translated to Dutch. Thanks a lot to Remco Schoen!
@changelog_1253_li
@changelog_1260_li
#Databases can now be opened even if trigger classes are not in the classpath. The exception is thrown when trying to fire the trigger.
@changelog_1254_li
@changelog_1261_li
#Opening databases with ACCESS_MODE_DATA=r is now supported. In this case the database is read-only, but the files don't not need to be read-only.
@changelog_1255_li
@changelog_1262_li
#Security: The database now waits 200 ms before throwing an exception if the user name or password don't match, to slow down dictionary attacks.
@changelog_1256_li
@changelog_1263_li
#The value cache is now a soft reference cache. This should help save memory.
@changelog_1257_li
@changelog_1264_li
#CREATE INDEX on a table with many rows could run out of memory. Fixed.
@changelog_1258_li
@changelog_1265_li
#Large result sets are now a bit faster.
@changelog_1259_li
@changelog_1266_li
#ALTER TABLE ALTER COLUMN RESTART and ALTER SEQUENCE now support parameters (any expressions).
@changelog_1260_li
@changelog_1267_li
#When setting the base directory on the command line, the user directory prefix ('~') was ignored.
@changelog_1261_li
@changelog_1268_li
#The DbStarter servlet didn't start the TCP listener even if configured.
@changelog_1262_li
@changelog_1269_li
#Statement.setQueryTimeout() is now supported.
@changelog_1263_li
@changelog_1270_li
#New session setting QUERY_TIMEOUT, and new system property h2.maxQueryTimeout.
@changelog_1264_li
@changelog_1271_li
#Changing the transaction log level (SET LOG) is now written to the trace file by default.
@changelog_1265_li
@changelog_1272_li
#In a SQL script, primary key constraints are now ordered before foreign key constraints.
@changelog_1266_li
@changelog_1273_li
#It was not possible to create a referential constraint to a table in a different schema in some situations.
@changelog_1267_li
@changelog_1274_li
#The H2 Console was slow when the database contains many tables. Now the column names are not shown in this case.
@changelog_1268_h2
@changelog_1275_h2
#Version 1.0.66 (2008-02-02)
@changelog_1269_li
@changelog_1276_li
#There is a new online error analyzer tool.
@changelog_1270_li
@changelog_1277_li
#H2 Console: stack traces are now links to the source code in the source repository (H2 database only).
@changelog_1271_li
@changelog_1278_li
#CHAR data type equals comparison was case insensitive instead of case sensitive.
@changelog_1272_li
@changelog_1279_li
#The exception 'Value too long for column' now includes the data.
@changelog_1273_li
@changelog_1280_li
#The table name was missing in the documentation of CREATE INDEX.
@changelog_1274_li
@changelog_1281_li
#Better support for IKVM (www.ikvm.net): the H2 Console now opens a browser window.
@changelog_1275_li
@changelog_1282_li
#The cache size was not correctly calculated for tables with large objects (specially if compression is used). This could lead to out-of-memory exceptions.
@changelog_1276_li
@changelog_1283_li
#The exception "Hexadecimal string contains non-hex character" was not always thrown when it should have been. Fixed.
@changelog_1277_li
@changelog_1284_li
#The H2 Console now provides a link to the documentation when an error occurs (H2 databases only so far).
@changelog_1278_li
@changelog_1285_li
#The acting as PostgreSQL server, when a base directory was set, and the H2 Console was started as well, the base directory was applied twice.
@changelog_1279_li
@changelog_1286_li
#Calling EXTRACT(HOUR FROM ...) or EXTRACT(HH FROM ...) returned the wrong values (0 to 11 instead of 0 to 23). All other tested databases return values from 0 to 23. Please check if your application relies on the old behavior before upgrading.
@changelog_1280_li
@changelog_1287_li
#For compatibility with other databases the column default (COLUMN_DEF) for columns without default is now null (it was an empty string).
@changelog_1281_li
@changelog_1288_li
#Statements that contain very large subqueries (where the subquery result does not fit in memory) are now faster.
@changelog_1282_li
@changelog_1289_li
#Variables: large objects (CLOB and BLOB) that don't fit in memory did not work correctly when used as variables.
@changelog_1283_li
@changelog_1290_li
#Fulltext search is now supported in named in-memory databases.
@changelog_1284_li
@changelog_1291_li
#H2 Console: multiple consecutive spaces in the setting name did not work. Fixed.
@changelog_1285_h2
@changelog_1292_h2
#Version 1.0.65 (2008-01-18)
@changelog_1286_li
@changelog_1293_li
#The build (ant) now automatically switches the source code to the correct version (JDK 1.4/1.5 or 1.6).
@changelog_1287_li
@changelog_1294_li
#A recovery bug has been fixed. With older versions, it was necessary to add ;RECOVER=1 to the database URL in cases where it should not have been required.
@changelog_1288_li
@changelog_1295_li
#The performance for DROP and DROP ALL OBJECTS has been improved.
@changelog_1289_li
@changelog_1296_li
#The ChangePassword API has been improved.
@changelog_1290_li
@changelog_1297_li
#User defined variables are now supported. Examples: SET @VAR=10;CALL @VAR. This can be used for running totals as in: select x, set(@t, ifnull(@t, 0) + x) from system_range(1, 10)
@changelog_1291_li
@changelog_1298_li
#The Ukrainian translation has been improved.
@changelog_1292_li
@changelog_1299_li
#CALL statements can now be used in batch updates and called using Statement.executeUpdate.
@changelog_1293_li
@changelog_1300_li
#New read-only setting CREATE_BUILD (the build number of the database engine that created the database).
@changelog_1294_li
@changelog_1301_li
#The optimizer did not use multi column indexes for range queries in some cases. Fixed.
@changelog_1295_li
@changelog_1302_li
#The H2 Console now calls DataSource.getConnection() instead of DataSource.getConnection(user, password) when user name and password are not specified.
@changelog_1296_li
@changelog_1303_li
#The bind IP address can now be set when using multi-homed host (if multiple network adapters are available) using the system property h2.bindAddress.
@changelog_1297_li
@changelog_1304_li
#Batch update: Calling BatchUpdateException.printStackTrace() could result in out of memory. Fixed.
@changelog_1298_li
@changelog_1305_li
#Indexes of unique or foreign constraints where not dropped when the constraint was dropped after altering the table (for example dropping a column). Fixed.
@changelog_1299_li
@changelog_1306_li
#The performance for large result sets in the server mode has been improved.
@changelog_1300_li
@changelog_1307_li
#The setting h2.serverSmallResultSetSize has been renamed to h2.serverResultSetFetchSize.
@changelog_1301_li
@changelog_1308_li
#The SCRIPT command now uses multi-row insert statements to save space except if the option SIMPLE is used.
@changelog_1302_li
@changelog_1309_li
#The SCRIPT command did not split up CLOB data correctly. Fixed.
@changelog_1303_li
@changelog_1310_li
#Optimization for single column distinct queries with an index: select distinct name from test. Can be disabled by setting the system property h2.optimizeDistinct to false.
@changelog_1304_li
@changelog_1311_li
#DROP ALL OBJECTS did not drop user defined aggregate functions and domains.
@changelog_1305_li
@changelog_1312_li
#PostgreSQL compatibility: COUNT(T.*) is now supported.
@changelog_1306_li
@changelog_1313_li
#LIKE comparisons are now faster.
@changelog_1307_li
@changelog_1314_li
#Encrypted databases are now faster.
@changelog_1308_h2
@changelog_1315_h2
#Version 1.0.64 (2007-12-27)
@changelog_1309_li
@changelog_1316_li
#3-way union queries with prepared statement or views could return the wrong results. Fixed.
@changelog_1310_li
@changelog_1317_li
#The PostgreSQL ODBC driver did not work in the last release due to a parser regression. Fixed.
@changelog_1311_li
@changelog_1318_li
#CSV tool: some escape/separator character combinations did not work. Fixed.
@changelog_1312_li
@changelog_1319_li
#CSV tool: the character # could not be used as a separator when reading.
@changelog_1313_li
@changelog_1320_li
#Recovery: when the index file is corrupt, now the database deletes it and re-creates it automatically.
@changelog_1314_li
@changelog_1321_li
#The MVCC mode did not work well with in-memory databases. Fixed.
@changelog_1315_li
@changelog_1322_li
#The FTP server now supports a event listener. Thanks Fulvio Biondi for the help!
@changelog_1316_li
@changelog_1323_li
#New system function CANCEL_SESSION to cancel the currently executing statement of another session.
@changelog_1317_li
@changelog_1324_li
#The database now supports an exclusive mode. In exclusive mode, new connections are rejected.
@changelog_1318_li
@changelog_1325_li
#H2 Console: when editing result sets, columns can now be set to null. The text 'null' must be escaped using '=null'.
@changelog_1319_li
@changelog_1326_li
#New built-in functions RPAD and LPAD.
@changelog_1320_li
@changelog_1327_li
#New meta data table INFORMATION_SCHEMA.SESSIONS and LOCKS to get information about active connections and locks. Admins will see all connections, non-admins only their own session.
@changelog_1321_li
@changelog_1328_li
#The Ukrainian translation was not working in the last release. Fixed.
@changelog_1322_li
@changelog_1329_li
#Creating many tables (many hundreds) was slow. Fixed.
@changelog_1323_li
@changelog_1330_li
#Opening a database with many indexes (thousands) was slow. Fixed.
@changelog_1324_li
@changelog_1331_li
#H2 Console / autocomplete: Ctrl+Space now shows the list in all modes.
@changelog_1325_li
@changelog_1332_li
#The method Trigger.init has been changed: the parameters 'before' and 'type', have been added to the init method.
@changelog_1326_li
@changelog_1333_li
#The performance has been improved for ResultSet methods with column name.
@changelog_1327_li
@changelog_1334_li
#A stack trace was thrown if the system did not provide a quick secure random source and if there is no network or the network settings are not configured. Fixed.
@changelog_1328_li
#The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar!
@changelog_1329_li
#Improved debugging support: toString methods of most object now return a meaningful text.
@changelog_1330_li
#The classes DbStarter and WebServlet have been moved to src/main.
@changelog_1331_li
#The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement.
@changelog_1332_li
#Loading classes and calling methods can be restricted using the new system property h2.allowedClasses.
@changelog_1333_li
#The database could not be used in Java applets due to security exceptions. Fixed.
@changelog_1334_h2
#Version 1.0.63 (2007-12-02)
@changelog_1335_li
#The SecurePassword example has been improved.
#The H2 Console has been translated to Turkish. Thanks a lot to Ridvan Agar!
@changelog_1336_li
#In time zones where the summer time saving limit is at midnight, some dates do not work in some virtual machines, for example 2007-10-14 in Chile, using the Sun JVM 1.6.0_03-b05. Fixed.
#Improved debugging support: toString methods of most object now return a meaningful text.
@changelog_1337_li
#The native fulltext search was not working properly after re-connecting.
#The classes DbStarter and WebServlet have been moved to src/main.
@changelog_1338_li
#Improved FTP server: now the PORT command is supported.
#The column INFORMATION_SCHEMA.TRIGGERS.SQL now contains the CREATE TRIGGER statement.
@changelog_1339_li
#Temporary views (FROM(...)) with UNION didn't work if nested. Fixed.
#Loading classes and calling methods can be restricted using the new system property h2.allowedClasses.
@changelog_1340_li
#Performance optimization for IN(...) and IN(SELECT...), currently disabled by default. To enable, use java -Dh2.optimizeInJoin=true
@changelog_1341_li
#The H2 Console has been translated to Ukrainian by Igor Dobrovolskyi. Thanks a lot!
@changelog_1342_li
#New function TABLE_DISTINCT.
@changelog_1343_li
#Using LIMIT with values close to Integer.MAX_VALUE didn't work correctly.
@changelog_1344_li
#Certain setting in the Server didn't work (http://code.google.com/p/h2database/issues/detail?id=7).
#The database could not be used in Java applets due to security exceptions. Fixed.
@download_1000_h1
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@@ -7123,52 +7111,52 @@ SQLコマンドがコマンドエリアに表示されます。
#Better space re-use in the files after deleting data: shrink the data file without closing the database (if the end of the file is empty)
@roadmap_1022_li
#Full outer joins
#Implement INSTEAD OF trigger (for views, tables, metadata tables).
@roadmap_1023_li
#Support trigger on the tables information_schema.tables and ...columns
#Full outer joins
@roadmap_1024_li
#Test very large databases and LOBs (up to 256 GB)
#Support trigger on the tables information_schema.tables and ...columns
@roadmap_1025_li
#Support hints for the optimizer (which index to use, enforce the join order).
#Test very large databases and LOBs (up to 256 GB)
@roadmap_1026_li
#Change LOB mechanism (less files, keep index of lob files, point to files and row, delete unused files earlier, maybe bundle files into a tar file)
#Support hints for the optimizer (which index to use, enforce the join order).
@roadmap_1027_li
#Clustering: recovery needs to becomes fully automatic. Global write lock feature.
#Change LOB mechanism (less files, keep index of lob files, point to files and row, delete unused files earlier, maybe bundle files into a tar file)
@roadmap_1028_li
#Option for Java functions: [DETERMINISTIC] FOR ...
#Clustering: recovery needs to becomes fully automatic. Global write lock feature.
@roadmap_1029_li
#Support mixed clustering mode (one embedded, the other server mode)
#Option for Java functions: [DETERMINISTIC] FOR ...
#Migrate database tool (also from other database engines)
#Add a migration guide (list differences between databases)
@roadmap_1035_li
#Optimization: automatic index creation suggestion using the trace file?
#Migrate database tool (also from other database engines)
@roadmap_1036_li
#Compression performance: don't allocate buffers, compress / expand in to out buffer
#Optimization: automatic index creation suggestion using the trace file?
@roadmap_1037_li
#Sequence: add features [NO] MINVALUE, MAXVALUE, CYCLE
#Compression performance: don't allocate buffers, compress / expand in to out buffer
@roadmap_1038_li
#Rebuild index functionality (other than delete the index file)
...
...
@@ -7195,7 +7183,7 @@ SQLコマンドがコマンドエリアに表示されます。
#Test with dbcopy (http://dbcopyplugin.sourceforge.net)
@roadmap_1046_li
#Find a tool to view large text file >100 MB, with find, page up and down (like less), truncate before / after
#Find a tool to view large text file (larger than 100 MB), with find, page up and down (like less), truncate before / after
@roadmap_1047_li
#Implement, test, document XAConnection and so on
...
...
@@ -7717,406 +7705,406 @@ SQLコマンドがコマンドエリアに表示されます。
#Access rights: remember the owner of an object. COMMENT: allow owner of object to change it.
@roadmap_1220_li
#Implement INSTEAD OF trigger.
#Access rights: Finer grained access control (grant access for specific functions)
@roadmap_1221_li
#Access rights: Finer grained access control (grant access for specific functions)
#Support N'text'
@roadmap_1222_li
#Support N'text'
#Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger
@roadmap_1223_li
#Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger
#Set a connection read only (Connection.setReadOnly)
@roadmap_1224_li
#Set a connection read only (Connection.setReadOnly)
#In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key
@roadmap_1225_li
#In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key
#Use JDK 1.4 file locking to create the lock file (but not yet by default); writing a system property to detect concurrent access from the same VM (different classloaders).
@roadmap_1226_li
#Use JDK 1.4 file locking to create the lock file (but not yet by default); writing a system property to detect concurrent access from the same VM (different classloaders).
#Support compatibility for jdbc:hsqldb:res:
@roadmap_1227_li
#Support compatibility for jdbc:hsqldb:res:
#In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true)
@roadmap_1228_li
#In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true)
#Provide a simple, lightweight O/R mapping tool
@roadmap_1229_li
#Provide a simple, lightweight O/R mapping tool
#Provide an Java SQL builder with standard and H2 syntax
@roadmap_1230_li
#Provide an Java SQL builder with standard and H2 syntax
#Trace: write OS, file system, JVM,... when opening the database
@roadmap_1231_li
#Trace: write OS, file system, JVM,... when opening the database
#Support indexes for views (probably requires materialized views)
@roadmap_1232_li
#Support indexes for views (probably requires materialized views)
#Document SET SEARCH_PATH, BEGIN, EXECUTE, parameters
@roadmap_1233_li
#Document SET SEARCH_PATH, BEGIN, EXECUTE, parameters
#Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6
@roadmap_1234_li
#Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6
#Server: use one listener (detect if the request comes from an PG or TCP client)
@roadmap_1235_li
#Server: use one listener (detect if the request comes from an PG or TCP client)
#Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility.
@roadmap_1236_li
#Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility.
#Support data type INTERVAL
@roadmap_1237_li
#Support data type INTERVAL
#NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ...
@roadmap_1238_li
#NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ...
#Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200
@roadmap_1239_li
#Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200
#Triggers for metadata tables; use for PostgreSQL catalog
@roadmap_1268_li
#Triggers for metadata tables; use for PostgreSQL catalog
#Does the FTP server has problems with multithreading?
@roadmap_1269_li
#Does the FTP server has problems with multithreading?
#Write an article about SQLInjection (h2\src\docsrc\html\images\SQLInjection.txt)
@roadmap_1270_li
#Write an article about SQLInjection (h2\src\docsrc\html\images\SQLInjection.txt)
#Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
@roadmap_1271_li
#Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
#Send SQL Injection solution proposal to MySQL, Derby, HSQLDB,...
@roadmap_1272_li
#Send SQL Injection solution proposal to MySQL, Derby, HSQLDB,...
#Improve LOB in directories performance
@roadmap_1273_li
#Improve LOB in directories performance
#Optimize OR conditions: convert them to IN(...) if possible.
@roadmap_1274_li
#Optimize OR conditions: convert them to IN(...) if possible.
#Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
@roadmap_1275_li
#Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
#HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
@roadmap_1276_li
#HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
#Web site: Rename Performance to Comparison [/Compatibility], move Comparison to Other Database Engines to Comparison, move Products that Work with H2 to Comparison, move Performance Tuning to Advanced Topics
@roadmap_1277_li
#Web site: Rename Performance to Comparison [/Compatibility], move Comparison to Other Database Engines to Comparison, move Products that Work with H2 to Comparison, move Performance Tuning to Advanced Topics
#Support JMX: Create an MBean for each database and server (support JConsole). See http://thedevcloud.blogspot.com/2008/10/displaying-hsql-database-manager-in.html
@roadmap_1278_li
#Support JMX: Create an MBean for each database and server (support JConsole). See http://thedevcloud.blogspot.com/2008/10/displaying-hsql-database-manager-in.html
#Translation: use ?? in help.csv
@roadmap_1279_li
#Translation: use ?? in help.csv
#Translated .pdf
@roadmap_1280_li
#Translated .pdf
#Cluster: hot deploy (adding a node on runtime)
@roadmap_1281_li
#Cluster: hot deploy (adding a node on runtime)
#Test with PostgreSQL Version 8.2
@roadmap_1282_li
#Test with PostgreSQL Version 8.2
#Website: Don't use frames.
@roadmap_1283_li
#Website: Don't use frames.
#Try again with Lobo browser (pure Java)
@roadmap_1284_li
#Try again with Lobo browser (pure Java)
#Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
@roadmap_1285_li
#Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
#RECOVER=2 to backup the database, run recovery, open the database
@roadmap_1286_li
#RECOVER=2 to backup the database, run recovery, open the database
#Recovery should work with encrypted databases
@roadmap_1287_li
#Recovery should work with encrypted databases
#Corruption: new error code, add help
@roadmap_1288_li
#Corruption: new error code, add help
#Space reuse: after init, scan all storages and free those that don't belong to a live database object
@roadmap_1289_li
#Space reuse: after init, scan all storages and free those that don't belong to a live database object
#SysProperties: change everything to H2_...
@roadmap_1290_li
#SysProperties: change everything to H2_...
#Use FilterIn / FilterOut putStream?
@roadmap_1291_li
#Use FilterIn / FilterOut putStream?
#Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
@roadmap_1292_li
#Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
#Support NOCACHE table option (Oracle)
@roadmap_1293_li
#Support NOCACHE table option (Oracle)
#Index usage for UPDATE ... WHERE .. IN (SELECT...)
@roadmap_1294_li
#Index usage for UPDATE ... WHERE .. IN (SELECT...)
#Add regular javadocs (using the default doclet, but another css) to the homepage.
@roadmap_1295_li
#Add regular javadocs (using the default doclet, but another css) to the homepage.
#The database should be kept open for a longer time when using the server mode.
@roadmap_1296_li
#The database should be kept open for a longer time when using the server mode.
#Javadocs: for each tool, add a copy & paste sample in the class level.
@roadmap_1297_li
#Javadocs: for each tool, add a copy & paste sample in the class level.
#Javadocs: add @author tags.
@roadmap_1298_li
#Javadocs: add @author tags.
#Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
@roadmap_1299_li
#Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
#MySQL compatibility: real SQL statements for SHOW TABLES, DESCRIBE TEST (then remove from Shell)
@roadmap_1300_li
#MySQL compatibility: real SQL statements for SHOW TABLES, DESCRIBE TEST (then remove from Shell)
#Use a default delay of 1 second before closing a database.
@roadmap_1301_li
#Use a default delay of 1 second before closing a database.
#Maven: upload source code and javadocs as well.
@roadmap_1302_li
#Maven: upload source code and javadocs as well.
#Write (log) to system table before adding to internal data structures.
@roadmap_1303_li
#Write (log) to system table before adding to internal data structures.
#Support very large deletes and updates.
@roadmap_1304_li
#Support very large deletes and updates.
#Doclet (javadocs): constructors are not listed.
@roadmap_1305_li
#Doclet (javadocs): constructors are not listed.
#Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
@roadmap_1306_li
#Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
#Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
@roadmap_1307_li
#Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object);
#MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular btree index solves the problem).
@roadmap_1308_li
#MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular btree index solves the problem).
#Support CREATE TEMPORARY LINKED TABLE.
@roadmap_1309_li
#Support CREATE TEMPORARY LINKED TABLE.
#MySQL compatibility: SELECT @variable := x FROM SYSTEM_RANGE(1, 50);
@roadmap_1310_li
#MySQL compatibility: SELECT @variable := x FROM SYSTEM_RANGE(1, 50);
#Oracle compatibility: support NLS_DATE_FORMAT.
@roadmap_1311_li
#Oracle compatibility: support NLS_DATE_FORMAT.
#Support flashback queries as in Oracle.
@roadmap_1312_li
#Support flashback queries as in Oracle.
#Import / Export of fixed with text files.
@roadmap_1313_li
#Import / Export of fixed with text files.
#Support for OUT parameters in user-defined procedures.
@roadmap_1314_li
#Support for OUT parameters in user-defined procedures.
#Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
@roadmap_1315_li
#Support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
#HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
@roadmap_1316_li
#HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
#Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
@roadmap_1317_li
#Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
#Enable warning for 'Local variable declaration hides another field or variable'.
@roadmap_1318_li
#Enable warning for 'Local variable declaration hides another field or variable'.
#Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
@roadmap_1319_li
#Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
#Support merge join.
@roadmap_1320_li
#Support merge join.
#H2 Console: in-place autocomplete.
@roadmap_1321_li
#H2 Console: in-place autocomplete.
#MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
@roadmap_1322_li
#MySQL compatibility: update test1 t1, test2 t2 set t1.id = t2.id where t1.id = t2.id;
#Oracle: support DECODE method (convert to CASE WHEN).
@roadmap_1323_li
#Oracle: support DECODE method (convert to CASE WHEN).
#Support large databases: split LOB (BLOB, CLOB) to multiple directories / disks (similar to tablespaces).
@roadmap_1324_li
#Support large databases: split LOB (BLOB, CLOB) to multiple directories / disks (similar to tablespaces).
#Support to assign a primary key index a user defined name.
@roadmap_1325_li
#Support to assign a primary key index a user defined name.
#Cluster: Add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
@roadmap_1326_li
#Cluster: Add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
#H2 Console: support configuration option for fixed width (monospace) font.
@roadmap_1327_li
#H2 Console: support configuration option for fixed width (monospace) font.
#Native fulltext search: support analyzers (specially for Chinese, Japanese).
@roadmap_1328_li
#Native fulltext search: support analyzers (specially for Chinese, Japanese).
#Automatically compact databases from time to time (as a background process).
@roadmap_1329_li
#Automatically compact databases from time to time (as a background process).
#Support SCOPE_IDENTITY().
@roadmap_1330_li
#Support SCOPE_IDENTITY().
#Support GRANT SELECT, UPDATE ON *.
@roadmap_1331_li
#Support GRANT SELECT, UPDATE ON *.
#Test Eclipse DTP.
@roadmap_1332_li
#Test Eclipse DTP.
#H2 Console: autocomplete: keep the previous setting
@roadmap_1333_li
#H2 Console: autocomplete: keep the previous setting
#executeBatch: option to stop at the first failed statement.
@roadmap_1334_li
#executeBatch: option to stop at the first failed statement.
#Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
@roadmap_1335_li
#Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
#Support Oracle ROWID (unique identifier for each row).
@roadmap_1336_li
#Support Oracle ROWID (unique identifier for each row).
#Server mode: Improve performance for batch updates.
@roadmap_1337_li
#Server mode: Improve performance for batch updates.
#Applets: Support read-only databases in a zip file (accessed as a resource).
@roadmap_1338_li
#Applets: Support read-only databases in a zip file (accessed as a resource).
#Long running queries / errors / trace system table.
@roadmap_1339_li
#Long running queries / errors / trace system table.
#H2 Console should support JaQu directly.
@roadmap_1340_li
#H2 Console should support JaQu directly.
#Option to copy the old version of each changed page once after a checkpoint.
@roadmap_1341_li
#Option to copy the old version of each changed page once after a checkpoint.
#H2 Console: support single file upload and directory download (optional).
@roadmap_1342_li
#H2 Console: support single file upload and directory download (optional).
#Document FTL_SEARCH, FTL_SEARCH_DATA.
@roadmap_1343_li
#Document FTL_SEARCH, FTL_SEARCH_DATA.
#Support DatabaseMetaData.insertsAreDetected: updatable result sets should detect inserts.
@roadmap_1344_li
#Support DatabaseMetaData.insertsAreDetected: updatable result sets should detect inserts.
#Auto-server: add option to define the IP address range or list.
@roadmap_1345_li
#Auto-server: add option to define the IP address range or list.
#Open a read-only database but don't share it with other connections. jdbc:h2:~/test;PRIVATE=TRUE
@roadmap_1346_li
#Open a read-only database but don't share it with other connections. jdbc:h2:~/test;PRIVATE=TRUE
#Index creation only using deterministic functions.
@roadmap_1347_li
#Index creation only using deterministic functions.
#Use http://recaptcha.net somehow to secure the Google Group.
@roadmap_1348_li
#Use http://recaptcha.net somehow to secure the Google Group.
#Support DELETE with TOP or LIMIT. See also: http://dev.mysql.com/doc/refman/5.1/de/delete.html
@roadmap_1349_li
#Support DELETE with TOP or LIMIT. See also: http://dev.mysql.com/doc/refman/5.1/de/delete.html
#Change the default for NULL || 'x' to return NULL
@roadmap_1350_li
#Change the default for NULL || 'x' to return NULL
#ANALYZE: Use a bloom filter for each indexed column to estimate count of distinct values.
@roadmap_1351_li
#ANALYZE: Use a bloom filter for each indexed column to estimate count of distinct values.
#ANALYZE: For unique indexes that allow null, count the number of null.
@roadmap_1352_li
#ANALYZE: For unique indexes that allow null, count the number of null.
#AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
@roadmap_1353_li
#AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
