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h2/src/docsrc/text/_docs_de.utf8.txt
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...@@ -2795,1731 +2795,1746 @@ Mit Maven 2 ...@@ -2795,1731 +2795,1746 @@ Mit Maven 2
#Version 1.0 (Current) #Version 1.0 (Current)
@history_1009_h3 @history_1009_h3
#Version 1.0.59 (2007-10-03) #Version 1.0.60 (2007-10-?)
@history_1010_li @history_1010_li
#When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed. #Prepared statements could not be used after data definition statements (creating tables and so on). Fixed.
@history_1011_li @history_1011_li
#If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed. #PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed.
@history_1012_li @history_1012_li
#Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed. #The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed.
@history_1013_li @history_1013_li
#CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example: select * from csvread('jar:file:///c:/temp/test.jar!/test.csv');
@history_1014_h3
#Version 1.0.59 (2007-10-03)
@history_1015_li
#When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed.
@history_1016_li
#If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed.
@history_1017_li
#Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed.
@history_1018_li
#A PreparedStatement that was cancelled could not be reused. Fixed. #A PreparedStatement that was cancelled could not be reused. Fixed.
@history_1014_li @history_1019_li
#H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow). #H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow).
@history_1015_li @history_1020_li
#When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed. #When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed.
@history_1016_li @history_1021_li
#Fulltext search is now documented (in the Tutorial). #Fulltext search is now documented (in the Tutorial).
@history_1017_li @history_1022_li
#The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed. #The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed.
@history_1018_li @history_1023_li
#When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed. #When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed.
@history_1019_li @history_1024_li
#When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed. #When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed.
@history_1020_li @history_1025_li
#REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used. #REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used.
@history_1021_li @history_1026_li
#SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste. #SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste.
@history_1022_li @history_1027_li
#When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed. #When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed.
@history_1023_li @history_1028_li
#Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed. #Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed.
@history_1024_li @history_1029_li
#Compatibility: comparing columns with constants that are out of range does not throw an exception. #Compatibility: comparing columns with constants that are out of range does not throw an exception.
@history_1025_h3 @history_1030_h3
#Version 1.0.58 (2007-09-15) #Version 1.0.58 (2007-09-15)
@history_1026_li @history_1031_li
#System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi. #System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi.
@history_1027_li @history_1032_li
#Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false. #Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false.
@history_1028_li @history_1033_li
#The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*). #The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*).
@history_1029_li @history_1034_li
#When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used. #When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used.
@history_1030_li @history_1035_li
#When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed. #When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed.
@history_1031_li @history_1036_li
#Maven 2: new version are now automatically synced with the central repositories. #Maven 2: new version are now automatically synced with the central repositories.
@history_1032_li @history_1037_li
#The default value for MAX_MEMORY_UNDO is now 100000. #The default value for MAX_MEMORY_UNDO is now 100000.
@history_1033_li @history_1038_li
#The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it. #The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it.
@history_1034_li @history_1039_li
#Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..). #Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..).
@history_1035_li @history_1040_li
#After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed. #After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed.
@history_1036_li @history_1041_li
#About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is an additionally problem, see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876. A workaround has been implemented. #About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is an additionally problem, see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876. A workaround has been implemented.
@history_1037_li @history_1042_li
#Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values. #Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values.
@history_1038_li @history_1043_li
#Using spaces in column and table aliases was not supported when used inside a view or temporary view. #Using spaces in column and table aliases was not supported when used inside a view or temporary view.
@history_1039_li @history_1044_li
#The version (build) number is now included in the manifest file. #The version (build) number is now included in the manifest file.
@history_1040_li @history_1045_li
#In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second. #In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second.
@history_1041_li @history_1046_li
#The database file sizes are now increased at most 32 MB at any time. #The database file sizes are now increased at most 32 MB at any time.
@history_1042_li @history_1047_li
#New method DatabaseEventListener.opened that is called just after opening a database. #New method DatabaseEventListener.opened that is called just after opening a database.
@history_1043_li @history_1048_li
#When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query. #When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query.
@history_1044_li @history_1049_li
#A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception. #A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception.
@history_1045_li @history_1050_li
#User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail. #User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail.
@history_1046_li @history_1051_li
#Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data). #Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data).
@history_1047_li @history_1052_li
#Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL. #Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL.
@history_1048_li @history_1053_li
#For PgServer, character encoding other than UTF-8 did not work correctly. Fixed. #For PgServer, character encoding other than UTF-8 did not work correctly. Fixed.
@history_1049_li @history_1054_li
#Using a function in a GROUP BY expression that is used in a view as a condition did not always work. #Using a function in a GROUP BY expression that is used in a view as a condition did not always work.
@history_1050_h3 @history_1055_h3
#Version 1.0.57 (2007-08-25) #Version 1.0.57 (2007-08-25)
@history_1051_li @history_1056_li
#New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome. #New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome.
@history_1052_li @history_1057_li
#The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change. #The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change.
@history_1053_li @history_1058_li
#The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time. #The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time.
@history_1054_li @history_1059_li
#Opening large read-only databases was very slow. Fixed. #Opening large read-only databases was very slow. Fixed.
@history_1055_li @history_1060_li
#New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot! #New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot!
@history_1056_li @history_1061_li
#Disabling / enabling referential integrity for a table can now be used inside a transaction. #Disabling / enabling referential integrity for a table can now be used inside a transaction.
@history_1057_li @history_1062_li
#Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed. #Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed.
@history_1058_li @history_1063_li
#Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed. #Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed.
@history_1059_li @history_1064_li
#When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed. #When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed.
@history_1060_li @history_1065_li
#When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed. #When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed.
@history_1061_li @history_1066_li
#Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table. #Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table.
@history_1062_li @history_1067_li
#Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now. #Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now.
@history_1063_li @history_1068_li
#Can now incrementally translate the documentation. See also FAQ. #Can now incrementally translate the documentation. See also FAQ.
@history_1064_li @history_1069_li
#Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense. #Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense.
@history_1065_li @history_1070_li
#The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables. #The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables.
@history_1066_li @history_1071_li
#Google translate did not work for the H2 homepage. It should be fixed now. #Google translate did not work for the H2 homepage. It should be fixed now.
@history_1067_li @history_1072_li
#The CONVERT function did not work with views when using UNION. #The CONVERT function did not work with views when using UNION.
@history_1068_li @history_1073_li
#The build now issues a warning if the source code is switched to the wrong version. #The build now issues a warning if the source code is switched to the wrong version.
@history_1069_li @history_1074_li
#The default lock mode is now read committed instead of serialized. #The default lock mode is now read committed instead of serialized.
@history_1070_li @history_1075_li
#PG server: data was truncated when reading large VARCHAR columns and decimal columns. #PG server: data was truncated when reading large VARCHAR columns and decimal columns.
@history_1071_li @history_1076_li
#PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed. #PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed.
@history_1072_li @history_1077_li
#Some file operations didn't work for files in the root directory. Fixed. #Some file operations didn't work for files in the root directory. Fixed.
@history_1073_li @history_1078_li
#In the Restore tool, the parameter -file did not work. Fixed. #In the Restore tool, the parameter -file did not work. Fixed.
@history_1074_li @history_1079_li
#Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported. #Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported.
@history_1075_li @history_1080_li
#The column name C_CURRENT_TIMESTAMP did not work in the last release. #The column name C_CURRENT_TIMESTAMP did not work in the last release.
@history_1076_li @history_1081_li
#OpenOffice compatibility: support database name in column names. #OpenOffice compatibility: support database name in column names.
@history_1077_h3 @history_1082_h3
#Version 1.0.56 (2007-08-02) #Version 1.0.56 (2007-08-02)
@history_1078_li @history_1083_li
#A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete). #A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete).
@history_1079_li @history_1084_li
#The error messages (src/main/org/h2/res/_*.*) can now be translated. #The error messages (src/main/org/h2/res/_*.*) can now be translated.
@history_1080_li @history_1085_li
#Part of the documentation has been translated to Japanese by Yusuke Fukushima. #Part of the documentation has been translated to Japanese by Yusuke Fukushima.
@history_1081_li @history_1086_li
#Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem. #Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem.
@history_1082_li @history_1087_li
#The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024. #The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024.
@history_1083_li @history_1088_li
#A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details. #A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details.
@history_1084_li @history_1089_li
#The experimental H2 ODBC driver has been removed. #The experimental H2 ODBC driver has been removed.
@history_1085_li @history_1090_li
#The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000. #The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000.
@history_1086_li @history_1091_li
#Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used. #Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used.
@history_1087_li @history_1092_li
#The old view implementation has been removed. #The old view implementation has been removed.
@history_1088_li @history_1093_li
#The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used. #The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used.
@history_1089_li @history_1094_li
#H2 Console: In the last release, the shutdown button did not work. Fixed. #H2 Console: In the last release, the shutdown button did not work. Fixed.
@history_1090_li @history_1095_li
#Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE. #Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE.
@history_1091_li @history_1096_li
#The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed. #The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed.
@history_1092_li @history_1097_li
#Calculation of cache memory usage has been improved. #Calculation of cache memory usage has been improved.
@history_1093_li @history_1098_li
#In some situations record were released too late from the cache. Fixed. #In some situations record were released too late from the cache. Fixed.
@history_1094_li @history_1099_li
#The cache size is now measured in KB instead of blocks of 128 byte. #The cache size is now measured in KB instead of blocks of 128 byte.
@history_1095_li @history_1100_li
#CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables. #CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables.
@history_1096_li @history_1101_li
#The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update. #The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update.
@history_1097_li @history_1102_li
#The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row. #The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row.
@history_1098_li @history_1103_li
#Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot. #Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot.
@history_1099_li @history_1104_li
#Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals. #Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals.
@history_1100_li @history_1105_li
#Documentation: the source code in 'Compacting a Database' was incorrect. Fixed. #Documentation: the source code in 'Compacting a Database' was incorrect. Fixed.
@history_1101_li @history_1106_li
#In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT. #In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT.
@history_1102_li @history_1107_li
#Views using UNION did not work correctly. Fixed. #Views using UNION did not work correctly. Fixed.
@history_1103_li @history_1108_li
#Function tables did not work with views and EXPLAIN. Fixed. #Function tables did not work with views and EXPLAIN. Fixed.
@history_1104_h3 @history_1109_h3
#Version 1.0.55 (2007-07-12) #Version 1.0.55 (2007-07-12)
@history_1105_li @history_1110_li
#Support for the system property baseDir. This works for embedded databases as well. The setting is supported by the H2 Console using -Dh2.baseDir or -baseDir #Support for the system property baseDir. This works for embedded databases as well. The setting is supported by the H2 Console using -Dh2.baseDir or -baseDir
@history_1106_li @history_1111_li
#LIKE ESCAPE did not work correctly if the pattern was % or _, followed by an escape character, followed by %. Fixed. #LIKE ESCAPE did not work correctly if the pattern was % or _, followed by an escape character, followed by %. Fixed.
@history_1107_li @history_1112_li
#PostgreSQL compatibility: SET SEARCH_PATH, SERIAL, CURRENT_USER, E'text', $1. #PostgreSQL compatibility: SET SEARCH_PATH, SERIAL, CURRENT_USER, E'text', $1.
@history_1108_li @history_1113_li
#In some situations, when many tables with LOB columns were modified (ALTER TABLE), large objects were deleted. Fixed. #In some situations, when many tables with LOB columns were modified (ALTER TABLE), large objects were deleted. Fixed.
@history_1109_li @history_1114_li
#CREATE TABLE AS SELECT .. UNION .. did not work. Fixed. #CREATE TABLE AS SELECT .. UNION .. did not work. Fixed.
@history_1110_li @history_1115_li
#New column ID for INFORMATION_SCHEMA.INDEXES, SEQUENCES, USERS, ROLES, RIGHTS, FUNCTION_ALIASES, SCHEMATA, VIEWS, CONSTRAINTS, CONSTANTS, DOMAINS, TRIGGERS. #New column ID for INFORMATION_SCHEMA.INDEXES, SEQUENCES, USERS, ROLES, RIGHTS, FUNCTION_ALIASES, SCHEMATA, VIEWS, CONSTRAINTS, CONSTANTS, DOMAINS, TRIGGERS.
@history_1111_li @history_1116_li
#If large result sets (backed by a temporary file) where not closed, the file was not deleted. Now, the default result set type is FETCH_FORWARD. This means temp files are deleted automatically (without having to close the result set explicitly). But it also means ResultSet.beforeFirst can only be called for scrollable result sets. To create a scrollable result set, use Statement stat = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY). #If large result sets (backed by a temporary file) where not closed, the file was not deleted. Now, the default result set type is FETCH_FORWARD. This means temp files are deleted automatically (without having to close the result set explicitly). But it also means ResultSet.beforeFirst can only be called for scrollable result sets. To create a scrollable result set, use Statement stat = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY).
@history_1112_li @history_1117_li
#PreparedStatement.getMetaData is now implemented. #PreparedStatement.getMetaData is now implemented.
@history_1113_li @history_1118_li
#Now PreparedStatement.setBigDecimal(..) can be called with an object of a derived class if the system property h2.allowBigDecimalExtensions is set to true. #Now PreparedStatement.setBigDecimal(..) can be called with an object of a derived class if the system property h2.allowBigDecimalExtensions is set to true.
@history_1114_li @history_1119_li
#The default database name in the documentation is now jdbc:h2:~/test. Like this, the database is stored in the user home directory (system property user.home). Of course storing the database in the current working directory (as in jdbc:h2:test) still works. Using the user directory avoids the problem that the database is not found if the application runs in another directory than the console. #The default database name in the documentation is now jdbc:h2:~/test. Like this, the database is stored in the user home directory (system property user.home). Of course storing the database in the current working directory (as in jdbc:h2:test) still works. Using the user directory avoids the problem that the database is not found if the application runs in another directory than the console.
@history_1115_li @history_1120_li
#The SQL statement SET ASSERT has been deprecated, because Constants.CHECK is now final. To disable assertions (and improve performance), the system property h2.check can be used. Executing SET ASSERT still works, but has no effect. #The SQL statement SET ASSERT has been deprecated, because Constants.CHECK is now final. To disable assertions (and improve performance), the system property h2.check can be used. Executing SET ASSERT still works, but has no effect.
@history_1116_li @history_1121_li
#In the READ_COMMITTED mode, when the multi-threaded kernel is enabled, read locks are now acquired but released immediately after a query. #In the READ_COMMITTED mode, when the multi-threaded kernel is enabled, read locks are now acquired but released immediately after a query.
@history_1117_li @history_1122_li
#The default trace level for JdbcDataSourceFactory was DEBUG, so when using data sources a trace file was always created. Now the default trace level is ERROR, and the file is only created if necessary. #The default trace level for JdbcDataSourceFactory was DEBUG, so when using data sources a trace file was always created. Now the default trace level is ERROR, and the file is only created if necessary.
@history_1118_li @history_1123_li
#PooledConnection.getConnection took a long time if only one connection was open at any time. Fixed. #PooledConnection.getConnection took a long time if only one connection was open at any time. Fixed.
@history_1119_li @history_1124_li
#Referential integrity violation: Two different SQL states are now used for missing parent / existing child. #Referential integrity violation: Two different SQL states are now used for missing parent / existing child.
@history_1120_li @history_1125_li
#DatabaseEventListener.exceptionThrown has a new parameter: SQL #DatabaseEventListener.exceptionThrown has a new parameter: SQL
@history_1121_li @history_1126_li
#For compatibility reasons, the catalog name can now be used in queries: SELECT * FROM TESTDB.PUBLIC.TEST #For compatibility reasons, the catalog name can now be used in queries: SELECT * FROM TESTDB.PUBLIC.TEST
@history_1122_li @history_1127_li
#If SHUTDOWN IMMEDIATELY was called, then the connection was not closed and the database opened from somebody else at the same time, in some cases this could result in errors with LOB files. Fixed. #If SHUTDOWN IMMEDIATELY was called, then the connection was not closed and the database opened from somebody else at the same time, in some cases this could result in errors with LOB files. Fixed.
@history_1123_li @history_1128_li
#The new view implementation is now enabled by default. To use the old implementation, set the system property 'h2.indexOld' to true (java -Dh2.indexOld=true ..., or in source code Constants.INDEX_OLD = true). If no problems are found, the old implementation will be removed in the next release. The old implementation does not work with multi-level nested temporary views (select * from (select * from (select * from test))). #The new view implementation is now enabled by default. To use the old implementation, set the system property 'h2.indexOld' to true (java -Dh2.indexOld=true ..., or in source code Constants.INDEX_OLD = true). If no problems are found, the old implementation will be removed in the next release. The old implementation does not work with multi-level nested temporary views (select * from (select * from (select * from test))).
@history_1124_li @history_1129_li
#The new view implementation did not work with < and <= comparison, and did not allow conditions on aggregates or grouped columns (HAVING). Fixed.. Fixed. #The new view implementation did not work with < and <= comparison, and did not allow conditions on aggregates or grouped columns (HAVING). Fixed.. Fixed.
@history_1125_li @history_1130_li
#Both view implementations did not work with multiple levels of nested temporary views (FROM (SELECT...)). Fixed. #Both view implementations did not work with multiple levels of nested temporary views (FROM (SELECT...)). Fixed.
@history_1126_li @history_1131_li
#The H2 Console can now be run as a standalone web application, or it can be embedded as a servlet into any existing web application. To build the 'H2 Console' web application, execute 'ant warConsole'. See src/tools/org/h2/server/web and src/tools/WEB-INF for details. This web application has been tested with Tomcat and Jetty. #The H2 Console can now be run as a standalone web application, or it can be embedded as a servlet into any existing web application. To build the 'H2 Console' web application, execute 'ant warConsole'. See src/tools/org/h2/server/web and src/tools/WEB-INF for details. This web application has been tested with Tomcat and Jetty.
@history_1127_li @history_1132_li
#Deleting database files didn't work for Windows if the database was on the root directory of a drive. #Deleting database files didn't work for Windows if the database was on the root directory of a drive.
@history_1128_li @history_1133_li
#The Polish translation is available. Thanks a lot to Tomek! #The Polish translation is available. Thanks a lot to Tomek!
@history_1129_li @history_1134_li
#Windows service: the CLASSPATH was not included when starting the service. Fixed. #Windows service: the CLASSPATH was not included when starting the service. Fixed.
@history_1130_h3 @history_1135_h3
#Version 1.0.50 (2007-06-17) #Version 1.0.50 (2007-06-17)
@history_1131_li @history_1136_li
#File names starting with ~ are now in the user directory (Java system property user.home) #File names starting with ~ are now in the user directory (Java system property user.home)
@history_1132_li @history_1137_li
#New Console starter application uses the JDK 1.6 system tray functionality if available, or a simple AWT frame for other platforms. To try it out, execute java org.h2.tools.Console. Feedback is welcome. This console starter application is not the default yet, but the plan is to remove the SysTray tool in the future. #New Console starter application uses the JDK 1.6 system tray functionality if available, or a simple AWT frame for other platforms. To try it out, execute java org.h2.tools.Console. Feedback is welcome. This console starter application is not the default yet, but the plan is to remove the SysTray tool in the future.
@history_1133_li @history_1138_li
#New method Csv.write(Writer writer, ResultSet rs) #New method Csv.write(Writer writer, ResultSet rs)
@history_1134_li @history_1139_li
#If a Reader or InputStream of a LOB is not closed, the LOB can not be deleted (embedded mode only). The exception is typically 'Error while renaming file'). As a workaround, set the system property 'h2.lobCloseBetweenReads' to true to close the LOB files between read operations. However this slows down reading. #If a Reader or InputStream of a LOB is not closed, the LOB can not be deleted (embedded mode only). The exception is typically 'Error while renaming file'). As a workaround, set the system property 'h2.lobCloseBetweenReads' to true to close the LOB files between read operations. However this slows down reading.
@history_1135_li @history_1140_li
#Server mode: the server stack trace was included in SQLException messages. Fixed. #Server mode: the server stack trace was included in SQLException messages. Fixed.
@history_1136_li @history_1141_li
#Views support has been partially re-implemented. Views are up to 6 times faster. Compared to regular queries, only 20% overhead. Because this is a bigger change, it is not enabled by default. To enable it, set the system property 'h2.indexNew' to true (java -Dh2.indexNew=true ..., or in source code Constants.INDEX_NEW = true). If no problems are found, this will be enabled by default in the next release. #Views support has been partially re-implemented. Views are up to 6 times faster. Compared to regular queries, only 20% overhead. Because this is a bigger change, it is not enabled by default. To enable it, set the system property 'h2.indexNew' to true (java -Dh2.indexNew=true ..., or in source code Constants.INDEX_NEW = true). If no problems are found, this will be enabled by default in the next release.
@history_1137_li @history_1142_li
#In INSERT and MERGE statements, each column may only be specified once now. #In INSERT and MERGE statements, each column may only be specified once now.
@history_1138_li @history_1143_li
#For most IOExceptions now the file name is included in the error message. #For most IOExceptions now the file name is included in the error message.
@history_1139_li @history_1144_li
#A java.util.Date object is now converted to a TIMESTAMP in the JDBC API. Previously it was converted to a DATE. #A java.util.Date object is now converted to a TIMESTAMP in the JDBC API. Previously it was converted to a DATE.
@history_1140_li @history_1145_li
#After calling SHUTDOWN and closing the connection and a superfluous error message appeared in the trace file. Fixed. #After calling SHUTDOWN and closing the connection and a superfluous error message appeared in the trace file. Fixed.
@history_1141_li @history_1146_li
#In many situations, views did not use an index if they could have. Fixed. Also the explain plan for views works now. #In many situations, views did not use an index if they could have. Fixed. Also the explain plan for views works now.
@history_1142_li @history_1147_li
#The table id (important for LOB files) is now included in INFORMATION_SCHEMA.TABLES. #The table id (important for LOB files) is now included in INFORMATION_SCHEMA.TABLES.
@history_1143_li @history_1148_li
#When using DISTINCT, ORDER BY a function works now as long as it is in the column list. #When using DISTINCT, ORDER BY a function works now as long as it is in the column list.
@history_1144_li @history_1149_li
#Support for the data type CHAR. The difference to VARCHAR is: trailing spaces are ignored. This data type is supported for compatibility with other databases and older applications. #Support for the data type CHAR. The difference to VARCHAR is: trailing spaces are ignored. This data type is supported for compatibility with other databases and older applications.
@history_1145_li @history_1150_li
#The aggregate function COUNT(...) now returns a long instead of an int. #The aggregate function COUNT(...) now returns a long instead of an int.
@history_1146_li @history_1151_li
#The 'ordering' of data types was not always correct, for example an operation involving REAL and DOUBLE produced a result of type REAL. Fixed. #The 'ordering' of data types was not always correct, for example an operation involving REAL and DOUBLE produced a result of type REAL. Fixed.
@history_1147_li @history_1152_li
#CSV tool: If the same instance was used for reading and writing, the tool wrote the column names twice. Fixed. #CSV tool: If the same instance was used for reading and writing, the tool wrote the column names twice. Fixed.
@history_1148_li @history_1153_li
#Compatibility: Support for the data type notation CHARACTER VARYING. #Compatibility: Support for the data type notation CHARACTER VARYING.
@history_1149_li @history_1154_li
#Can now ORDER BY -1 (meaning order by first column, descending), and ORDER BY ? (parameterized column number). #Can now ORDER BY -1 (meaning order by first column, descending), and ORDER BY ? (parameterized column number).
@history_1150_li @history_1155_li
#Databases with invalid linked tables (for example, because the target database is not accessible) can now be opened. Old table links don't work however. #Databases with invalid linked tables (for example, because the target database is not accessible) can now be opened. Old table links don't work however.
@history_1151_li @history_1156_li
#There was a small memory leak in the trace module. One object per opened connection was kept in a hash map. #There was a small memory leak in the trace module. One object per opened connection was kept in a hash map.
@history_1152_li @history_1157_li
#Linked tables can now emit UPDATE statements if 'EMIT UPDATES' is specified in the CREATE LINKED TABLE statement. So far, updating a row always deleted the old row and then inserted the new row. #Linked tables can now emit UPDATE statements if 'EMIT UPDATES' is specified in the CREATE LINKED TABLE statement. So far, updating a row always deleted the old row and then inserted the new row.
@history_1153_li @history_1158_li
#In the last release, the H2 Console opened two connection when logging into a database, and only closed one connection when logging out. Fixed. #In the last release, the H2 Console opened two connection when logging into a database, and only closed one connection when logging out. Fixed.
@history_1154_li @history_1159_li
#New functions LEAST and GREATEST to get the smallest or largest value from a list. #New functions LEAST and GREATEST to get the smallest or largest value from a list.
@history_1155_h3 @history_1160_h3
#Version 1.0.46 (2007-04-29) #Version 1.0.46 (2007-04-29)
@history_1156_li @history_1161_li
#Unnamed private in-memory database (jdbc:h2:mem:) were not 'private' as documented. Fixed. #Unnamed private in-memory database (jdbc:h2:mem:) were not 'private' as documented. Fixed.
@history_1157_li @history_1162_li
#Autocomplete in the Console application: now the result frame scrolls to the top when the list is updated. #Autocomplete in the Console application: now the result frame scrolls to the top when the list is updated.
@history_1158_li @history_1163_li
#GROUP BY expressions did not work correctly in subqueries. Fixed. #GROUP BY expressions did not work correctly in subqueries. Fixed.
@history_1159_li @history_1164_li
#New function TABLE to define ad-hoc (temporary) tables in a query. This also solves problems with variable-size IN(...) queries: instead of SELECT * FROM TEST WHERE ID IN(?, ?, ...) you can now write: SELECT * FROM TABLE(ID INT=?) X, TEST WHERE X.ID=TEST.ID In this case, the index is used. #New function TABLE to define ad-hoc (temporary) tables in a query. This also solves problems with variable-size IN(...) queries: instead of SELECT * FROM TEST WHERE ID IN(?, ?, ...) you can now write: SELECT * FROM TABLE(ID INT=?) X, TEST WHERE X.ID=TEST.ID In this case, the index is used.
@history_1160_li @history_1165_li
#New data type ARRAY. Actually it was there before, but is now documented and better tested (however it must still be considered experimental). The java.sql.Array implementation is incomplete, but setObject(1, new Object[]{...}) and getObject(..) can be used. New functions ARRAY_GET and ARRAY_LENGTH. #New data type ARRAY. Actually it was there before, but is now documented and better tested (however it must still be considered experimental). The java.sql.Array implementation is incomplete, but setObject(1, new Object[]{...}) and getObject(..) can be used. New functions ARRAY_GET and ARRAY_LENGTH.
@history_1161_li @history_1166_li
#SimpleResultSet now has some basic data type conversion features. #SimpleResultSet now has some basic data type conversion features.
@history_1162_li @history_1167_li
#When using JDK 1.5 or later, and switching on h2.lobFilesInDirectories, the performance for creating LOBs was bad. This has been fixed, however creating lots of LOBs it is still faster when the setting is switched off. #When using JDK 1.5 or later, and switching on h2.lobFilesInDirectories, the performance for creating LOBs was bad. This has been fixed, however creating lots of LOBs it is still faster when the setting is switched off.
@history_1163_li @history_1168_li
#A problem with multiple unnamed dynamic tables (FROM (SELECT...)) has been fixed. #A problem with multiple unnamed dynamic tables (FROM (SELECT...)) has been fixed.
@history_1164_li @history_1169_li
#Appending 'Z' to a timestamp did not have an effect. Now it is interpreted as +00:00 (GMT). #Appending 'Z' to a timestamp did not have an effect. Now it is interpreted as +00:00 (GMT).
@history_1165_li @history_1170_li
#The BACKUP command is better tested and documented. This means hot backup (online backup) is now possible. #The BACKUP command is better tested and documented. This means hot backup (online backup) is now possible.
@history_1166_li @history_1171_li
#The old 'Backup' tool is now called 'Script' (as the SQL statement). #The old 'Backup' tool is now called 'Script' (as the SQL statement).
@history_1167_li @history_1172_li
#There are new 'Backup' and 'Restore' tools that work with database files directly. #There are new 'Backup' and 'Restore' tools that work with database files directly.
@history_1168_li @history_1173_li
#The complete syntax for referential and check constraints is now supported when written as part of the column definition, behind PRIMARY KEY. #The complete syntax for referential and check constraints is now supported when written as part of the column definition, behind PRIMARY KEY.
@history_1169_li @history_1174_li
#CASE WHEN ... returned the wrong result when the condition evaluated to NULL. #CASE WHEN ... returned the wrong result when the condition evaluated to NULL.
@history_1170_li @history_1175_li
#The new function LINK_SCHEMA simplifies linking all tables of a schema. #The new function LINK_SCHEMA simplifies linking all tables of a schema.
@history_1171_li @history_1176_li
#SCRIPT DROP now also drops aliases (Java functions) if they exist. #SCRIPT DROP now also drops aliases (Java functions) if they exist.
@history_1172_li @history_1177_li
#For encrypted databases, the trace option can no longer be enabled manually by creating a file. #For encrypted databases, the trace option can no longer be enabled manually by creating a file.
@history_1173_li @history_1178_li
#For linked tables, NULL in the unique key is now supported. #For linked tables, NULL in the unique key is now supported.
@history_1174_li @history_1179_li
#For read-only databases, temp files are now created in the default temp directory instead of the database directory. #For read-only databases, temp files are now created in the default temp directory instead of the database directory.
@history_1175_li @history_1180_li
#Sending CLOB data was slow in some systems when using the server version. Fixed. #Sending CLOB data was slow in some systems when using the server version. Fixed.
@history_1176_li @history_1181_li
#CSVWRITE now returns the number of rows written. #CSVWRITE now returns the number of rows written.
@history_1177_li @history_1182_li
#The data type of NULLIF was NULL if the first expression was a column. Now the data type is set correctly. #The data type of NULLIF was NULL if the first expression was a column. Now the data type is set correctly.
@history_1178_li @history_1183_li
#Indexes (and other related objects) for local temporary tables where not dropped when the session was closed. Fixed. #Indexes (and other related objects) for local temporary tables where not dropped when the session was closed. Fixed.
@history_1179_li @history_1184_li
#ALTER TABLE did not work for tables with computed columns. #ALTER TABLE did not work for tables with computed columns.
@history_1180_li @history_1185_li
#SQLException.getCause of the now works for JDK 1.4 and higher. #SQLException.getCause of the now works for JDK 1.4 and higher.
@history_1181_li @history_1186_li
#If the index file was deleted, an error was logged in the .trace.db file. This is no longer done. #If the index file was deleted, an error was logged in the .trace.db file. This is no longer done.
@history_1182_li @history_1187_li
#The Portuguese (Europe) translation is available. Thanks a lot to Antonio Casqueiro! #The Portuguese (Europe) translation is available. Thanks a lot to Antonio Casqueiro!
@history_1183_li @history_1188_li
#The error message for invalid views has been improved (the root cause is included in the message now). #The error message for invalid views has been improved (the root cause is included in the message now).
@history_1184_li @history_1189_li
#IN(SELECT ...) was not working correctly if the subquery returned a NULL value. Fixed. #IN(SELECT ...) was not working correctly if the subquery returned a NULL value. Fixed.
@history_1185_li @history_1190_li
#DROP ALL OBJECTS did not drop constants. #DROP ALL OBJECTS did not drop constants.
@history_1186_li @history_1191_li
#DROP ALL OBJECTS dropped the role PUBLIC, which was wrong. Fixed. #DROP ALL OBJECTS dropped the role PUBLIC, which was wrong. Fixed.
@history_1187_li @history_1192_li
#CASE was parsed as a function if the expression was in (). Fixed. #CASE was parsed as a function if the expression was in (). Fixed.
@history_1188_li @history_1193_li
#When ORDER BY was used together with DISTINCT, it was required to type the column name exactly in the select list and the order list exactly in the same way. This is not required any longer. #When ORDER BY was used together with DISTINCT, it was required to type the column name exactly in the select list and the order list exactly in the same way. This is not required any longer.
@history_1189_h3 @history_1194_h3
#Version 1.0.44 (2007-03-04) #Version 1.0.44 (2007-03-04)
@history_1190_li @history_1195_li
#System sequences (automatically created sequences for IDENTITY or AUTO_INCREMENT columns) are now random (UUIDs) to avoid clashes when merging databases using RUNSCRIPT. #System sequences (automatically created sequences for IDENTITY or AUTO_INCREMENT columns) are now random (UUIDs) to avoid clashes when merging databases using RUNSCRIPT.
@history_1191_li @history_1196_li
#The precision for linked tables was not correct for some data types, for example VARCHAR. Fixed. #The precision for linked tables was not correct for some data types, for example VARCHAR. Fixed.
@history_1192_li @history_1197_li
#Many problems and bugs in the XA support (package javax.sql) have been fixed. #Many problems and bugs in the XA support (package javax.sql) have been fixed.
@history_1193_li @history_1198_li
#Now the server tool (org.h2.tools.Server) terminates with an exit code if a problem occured. #Now the server tool (org.h2.tools.Server) terminates with an exit code if a problem occured.
@history_1194_li @history_1199_li
#The JDBC driver is now loaded if the JdbcDataSource class is loaded. #The JDBC driver is now loaded if the JdbcDataSource class is loaded.
@history_1195_li @history_1200_li
#After renaming a user the password becomes invalid. This is now documented. #After renaming a user the password becomes invalid. This is now documented.
@history_1196_li @history_1201_li
#XAResource.recover didn't work. Fixed. #XAResource.recover didn't work. Fixed.
@history_1197_li @history_1202_li
#XAResource.recover did throw an exception with the code XAER_OUTSIDE if there was no connection. Now the code is XAER_RMERR. #XAResource.recover did throw an exception with the code XAER_OUTSIDE if there was no connection. Now the code is XAER_RMERR.
@history_1198_li @history_1203_li
#SCRIPT did not work correctly with BLOB or CLOB data. Fixed. #SCRIPT did not work correctly with BLOB or CLOB data. Fixed.
@history_1199_li @history_1204_li
#BACKUP TO 'test.zip' now works with encrypted databases and CLOB and BLOB data. #BACKUP TO 'test.zip' now works with encrypted databases and CLOB and BLOB data.
@history_1200_li @history_1205_li
#The function CASE WHEN ... didn't convert the returned value to the same data type, resulting in unexpected behavior in many cases. Fixed. #The function CASE WHEN ... didn't convert the returned value to the same data type, resulting in unexpected behavior in many cases. Fixed.
@history_1201_li @history_1206_li
#Truncating a table is now allowed if the table references another table (but still not allowed if the table is references by another table). #Truncating a table is now allowed if the table references another table (but still not allowed if the table is references by another table).
@history_1202_li @history_1207_li
#ORDER BY picked the wrong column if the same column name (but with a different table name) was used twice in the select list. #ORDER BY picked the wrong column if the same column name (but with a different table name) was used twice in the select list.
@history_1203_li @history_1208_li
#When a subquery was used in the select list of a query, and GROUP BY was used at the same time, a NullPointerException could occur. Fixed. #When a subquery was used in the select list of a query, and GROUP BY was used at the same time, a NullPointerException could occur. Fixed.
@history_1204_li @history_1209_li
#ORDER BY did not work when DISTINCT was used at the same time in some situations. Fixed. #ORDER BY did not work when DISTINCT was used at the same time in some situations. Fixed.
@history_1205_li @history_1210_li
#When using IN(...) on a case insensitive column (VARCHAR_IGNORECASE), an incorrect optimization was made and the result was wrong sometimes. #When using IN(...) on a case insensitive column (VARCHAR_IGNORECASE), an incorrect optimization was made and the result was wrong sometimes.
@history_1206_h3 @history_1211_h3
#Version 1.0.41 (2007-01-30) #Version 1.0.41 (2007-01-30)
@history_1207_li @history_1212_li
#Experimental online backup feature using the SQL statement BACKUP TO 'fileName'. This creates a backup in the form of a zip file. Unlike the SCRIPT TO command, the data tables are not locked. #Experimental online backup feature using the SQL statement BACKUP TO 'fileName'. This creates a backup in the form of a zip file. Unlike the SCRIPT TO command, the data tables are not locked.
@history_1208_li @history_1213_li
#When using the server mode, temporary files for large LOB values are now deleted when the result set is closed. This also means that LOBs become unavailable after closing the result, however this is according to the specs. #When using the server mode, temporary files for large LOB values are now deleted when the result set is closed. This also means that LOBs become unavailable after closing the result, however this is according to the specs.
@history_1209_li @history_1214_li
#It was possible that SUM throws a class cast exception if the parameter was a conditional expression. #It was possible that SUM throws a class cast exception if the parameter was a conditional expression.
@history_1210_li @history_1215_li
#Benchmark: Added a multi-client test case, BenchB (similar to TPC-B). #Benchmark: Added a multi-client test case, BenchB (similar to TPC-B).
@history_1211_li @history_1216_li
#Compatibility: SCHEMA_NAME.SEQUENCE_NAME.NEXTVAL now works as expected. #Compatibility: SCHEMA_NAME.SEQUENCE_NAME.NEXTVAL now works as expected.
@history_1212_li @history_1217_li
#The Console is now translated to Hungarian thanks to Andras Hideg, and to Indonesian thanks to Joko Yuliantoro #The Console is now translated to Hungarian thanks to Andras Hideg, and to Indonesian thanks to Joko Yuliantoro
@history_1213_li @history_1218_li
#XAConnection: A NullPointerException was thrown if addConnectionEventListener was called before opening the connection. #XAConnection: A NullPointerException was thrown if addConnectionEventListener was called before opening the connection.
@history_1214_li @history_1219_li
#In case the result set of a subquery was re-used, an exception was throws if the subquery result did not fit in memory. Now the result is not re-used in this case. Generally, large subqueries should be avoided for performance reasons. #In case the result set of a subquery was re-used, an exception was throws if the subquery result did not fit in memory. Now the result is not re-used in this case. Generally, large subqueries should be avoided for performance reasons.
@history_1215_li @history_1220_li
#The command "drop all objects delete files" did not work on linux if the database name was lower case. #The command "drop all objects delete files" did not work on linux if the database name was lower case.
@history_1216_li @history_1221_li
#When setting the URL to an empty string the DataSource now throws an better exception. #When setting the URL to an empty string the DataSource now throws an better exception.
@history_1217_li @history_1222_li
#Parsing of LIKE .. ESCAPE did not stop at the expected point. Fixed. #Parsing of LIKE .. ESCAPE did not stop at the expected point. Fixed.
@history_1218_li @history_1223_li
#Can now use UUID columns as generated key values. However, the UUID column must be the primary key. #Can now use UUID columns as generated key values. However, the UUID column must be the primary key.
@history_1219_li @history_1224_li
#Improved the Javadoc documentation. Now unsupported features are marked with [Not supported], and partially supported features are [Partially supported]. #Improved the Javadoc documentation. Now unsupported features are marked with [Not supported], and partially supported features are [Partially supported].
@history_1220_li @history_1225_li
#The forum subscriptions (the emails sent from the forum) now works. #The forum subscriptions (the emails sent from the forum) now works.
@history_1221_h3 @history_1226_h3
#Version 1.0.40 (2007-01-17) #Version 1.0.40 (2007-01-17)
@history_1222_li @history_1227_li
#Setting the collation (SET COLLATOR) was very slow on some systems (up to 24 seconds). Thanks a lot to Martina Nissler for finding this problem! #Setting the collation (SET COLLATOR) was very slow on some systems (up to 24 seconds). Thanks a lot to Martina Nissler for finding this problem!
@history_1223_li @history_1228_li
#The Console is now translated to Japanese thanks to IKEMOTO, Masahiro (ikeyan (at) arizona (dot) ne (dot) jp) #The Console is now translated to Japanese thanks to IKEMOTO, Masahiro (ikeyan (at) arizona (dot) ne (dot) jp)
@history_1224_li @history_1229_li
#The database engine can now be compiled with JDK 1.3 using ant codeswitch. There are still some limitations, and the ant script to build the jar does not work yet. #The database engine can now be compiled with JDK 1.3 using ant codeswitch. There are still some limitations, and the ant script to build the jar does not work yet.
@history_1225_li @history_1230_li
#Fixed a problem where data in the log file was not written to the data file (recovery failure) after a crash, if an index was deleted previously. #Fixed a problem where data in the log file was not written to the data file (recovery failure) after a crash, if an index was deleted previously.
@history_1226_li @history_1231_li
#SCRIPT NODATA now writes the row count for each table (this simplifies comparing databases). #SCRIPT NODATA now writes the row count for each table (this simplifies comparing databases).
@history_1227_li @history_1232_li
#Selecting a column using the syntax schemaName.tableName.columnName did not work in all cases. #Selecting a column using the syntax schemaName.tableName.columnName did not work in all cases.
@history_1228_li @history_1233_li
#Can now parse timestamps with timezone information (Z or +/-hh:mm) and dates before year 1. However dates before year 1 are not formatted correctly (this is a Java problem). #Can now parse timestamps with timezone information (Z or +/-hh:mm) and dates before year 1. However dates before year 1 are not formatted correctly (this is a Java problem).
@history_1229_li @history_1234_li
#When stopping the TCP server from an application and immediately afterwards staring it again using a different TCP password, an exception was thrown sometimes. #When stopping the TCP server from an application and immediately afterwards staring it again using a different TCP password, an exception was thrown sometimes.
@history_1230_li @history_1235_li
#Now PreparedStatement.setBigDecimal(..) can only be called with an object of type java.math.BigDecimal. Derived classes are not allowed any more. Many thanks to Maciej Wegorkiewicz for finding this problem. #Now PreparedStatement.setBigDecimal(..) can only be called with an object of type java.math.BigDecimal. Derived classes are not allowed any more. Many thanks to Maciej Wegorkiewicz for finding this problem.
@history_1231_li @history_1236_li
#It was possible to manipulate values in the byte array after calling PreparedStatement.setBytes, and this could lead to problems if the same byte array was used again. Now the byte array is copied if required. #It was possible to manipulate values in the byte array after calling PreparedStatement.setBytes, and this could lead to problems if the same byte array was used again. Now the byte array is copied if required.
@history_1232_li @history_1237_li
#Date, time and timestamp objects were cloned in cases where it was not required. Fixed. #Date, time and timestamp objects were cloned in cases where it was not required. Fixed.
@history_1233_h3 @history_1238_h3
#Version 1.0.36 (2007-01-02) #Version 1.0.36 (2007-01-02)
@history_1234_li @history_1239_li
#It was possible to drop the sequence of a temporary tables with DROP ALL OBJECTS, resulting in a null pointer exception afterwards. #It was possible to drop the sequence of a temporary tables with DROP ALL OBJECTS, resulting in a null pointer exception afterwards.
@history_1235_li @history_1240_li
#Prepared statements with non-constant functions such as CURRENT_TIMESTAMP() did not get re-evaluated if the result of the function changed. Fixed. #Prepared statements with non-constant functions such as CURRENT_TIMESTAMP() did not get re-evaluated if the result of the function changed. Fixed.
@history_1236_li @history_1241_li
#The (relative or absolute) directory where the script files are stored or read can now be changed using the system property h2.scriptDirectory #The (relative or absolute) directory where the script files are stored or read can now be changed using the system property h2.scriptDirectory
@history_1237_li @history_1242_li
#Client trace files now created in the directory 'trace.db' and no longer the application directory. This can be changed using the system property h2.clientTraceDirectory. #Client trace files now created in the directory 'trace.db' and no longer the application directory. This can be changed using the system property h2.clientTraceDirectory.
@history_1238_li @history_1243_li
#In some situations the log file got corrupt if the process was terminated while the database was opening. #In some situations the log file got corrupt if the process was terminated while the database was opening.
@history_1239_li @history_1244_li
#Using ;RECOVER=1 in the database URL threw a syntax exception. Fixed. #Using ;RECOVER=1 in the database URL threw a syntax exception. Fixed.
@history_1240_li @history_1245_li
#If a CLOB or BLOB was deleted in a transaction and the database crashed before the transaction was committed or rolled back, the object was lost if it was large. Fixed. #If a CLOB or BLOB was deleted in a transaction and the database crashed before the transaction was committed or rolled back, the object was lost if it was large. Fixed.
@history_1241_li @history_1246_li
#Now using ant-build.properties. The jdk is automatically updated when using ant codeswitch... #Now using ant-build.properties. The jdk is automatically updated when using ant codeswitch...
@history_1242_li @history_1247_li
#Cluster: Now the server can detect if a query is read-only, and in this case the result is only read from the first cluster node. However, there is currently no load balancing made to avoid problems with transactions / locking. #Cluster: Now the server can detect if a query is read-only, and in this case the result is only read from the first cluster node. However, there is currently no load balancing made to avoid problems with transactions / locking.
@history_1243_li @history_1248_li
#Many settings are now initialized from system properties and can be changed on the command line without having recompile the database. See Advances / Settings Read from System Properties. #Many settings are now initialized from system properties and can be changed on the command line without having recompile the database. See Advances / Settings Read from System Properties.
@history_1244_li @history_1249_li
#H2 is now available in Maven. The groupId is com.h2database, the artifactId h2 and the version 1.0.20061217. To create the maven artifacts yourself, use 'ant mavenUploadLocal' and 'ant mavenBuildCentral'. #H2 is now available in Maven. The groupId is com.h2database, the artifactId h2 and the version 1.0.20061217. To create the maven artifacts yourself, use 'ant mavenUploadLocal' and 'ant mavenBuildCentral'.
@history_1245_h3 @history_1250_h3
#Version 1.0.25 (2006-08-31) #Version 1.0.25 (2006-08-31)
@history_1246_li @history_1251_li
#In some situations, wide b-tree indexes (with large VARCHAR columns for example) could get corrupted. Fixed. #In some situations, wide b-tree indexes (with large VARCHAR columns for example) could get corrupted. Fixed.
@history_1247_li @history_1252_li
#ORDER BY was broken in the last release when using table aliases. Fixed. #ORDER BY was broken in the last release when using table aliases. Fixed.
@history_1248_h3 @history_1253_h3
#Version 0.9 (2005-12-13) #Version 0.9 (2005-12-13)
@history_1249_li @history_1254_li
#First public release. #First public release.
@history_1250_h2 @history_1255_h2
#Roadmap #Roadmap
@history_1251_h3 @history_1256_h3
#Highest Priority #Highest Priority
@history_1252_li @history_1257_li
#Improve test code coverage #Improve test code coverage
@history_1253_li @history_1258_li
#More fuzz tests #More fuzz tests
@history_1254_li @history_1259_li
#Test very large databases and LOBs (up to 256 GB) #Test very large databases and LOBs (up to 256 GB)
@history_1255_li @history_1260_li
#Test multi-threaded in-memory db access #Test multi-threaded in-memory db access
@history_1256_h3 @history_1261_h3
#In Version 1.1 #In Version 1.1
@history_1257_li @history_1262_li
#Add version number. Install directory: h2-1.0, jar file: h2-1.0.jar. Micro version: use build number, staring with 1.1.100 #Add version number. Install directory: h2-1.0, jar file: h2-1.0.jar. Micro version: use build number, staring with 1.1.100
@history_1258_li @history_1263_li
#Automatic upgrade if there is a file format change #Automatic upgrade if there is a file format change
@history_1259_li @history_1264_li
#ALTER TABLE on a table with a LOB could result in 'Cannot delete file' on some systems. Fixed. #ALTER TABLE on a table with a LOB could result in 'Cannot delete file' on some systems. Fixed.
@history_1260_li @history_1265_li
#Change Constants.DEFAULT_MAX_MEMORY_UNDO to 10000 (and change the docs). Test. #Change Constants.DEFAULT_MAX_MEMORY_UNDO to 10000 (and change the docs). Test.
@history_1261_li @history_1266_li
#Enable and document optimizations, LOB files in directories #Enable and document optimizations, LOB files in directories
@history_1262_li @history_1267_li
#Special methods for DataPage.writeByte / writeShort and so on #Special methods for DataPage.writeByte / writeShort and so on
@history_1263_li @history_1268_li
#Index organized tables CREATE TABLE...(...) ORGANIZATION INDEX (store in data file) (probably file format changes are required for rowId) #Index organized tables CREATE TABLE...(...) ORGANIZATION INDEX (store in data file) (probably file format changes are required for rowId)
@history_1264_li @history_1269_li
#Change the default for NULL || 'x' to NULL #Change the default for NULL || 'x' to NULL
@history_1265_h3 @history_1270_h3
#Priority 1 #Priority 1
@history_1266_li @history_1271_li
#MVCC (Multi Version Concurrency Control) #MVCC (Multi Version Concurrency Control)
@history_1267_li @history_1272_li
#Read-only databases inside a jar (splitting large files to speed up random access) #Read-only databases inside a jar (splitting large files to speed up random access)
@history_1268_li @history_1273_li
#RECOVER=1 should automatically recover, =2 should run the recovery tool if required #RECOVER=1 should automatically recover, =2 should run the recovery tool if required
@history_1269_li @history_1274_li
#More tests with MULTI_THREADED=1 #More tests with MULTI_THREADED=1
@history_1270_li @history_1275_li
#Improve performance for create table (if this is possible) #Improve performance for create table (if this is possible)
@history_1271_li @history_1276_li
#Test with Spatial DB in a box / JTS (http://docs.codehaus.org/display/GEOS/SpatialDBBox) #Test with Spatial DB in a box / JTS (http://docs.codehaus.org/display/GEOS/SpatialDBBox)
@history_1272_li @history_1277_li
#Document how to use H2 with PHP (generic database API) #Document how to use H2 with PHP (generic database API)
@history_1273_li @history_1278_li
#Optimization: result set caching (like MySQL) #Optimization: result set caching (like MySQL)
@history_1274_li @history_1279_li
#Server side cursors #Server side cursors
@history_1275_li @history_1280_li
#Row level locking #Row level locking
@history_1276_li @history_1281_li
#System table: open sessions and locks of a database #System table: open sessions and locks of a database
@history_1277_li @history_1282_li
#Function in management db: list open connections and databases of a (TCP) server #Function in management db: list open connections and databases of a (TCP) server
@history_1278_li @history_1283_li
#Fix right outer joins #Fix right outer joins
@history_1279_li @history_1284_li
#Full outer joins #Full outer joins
@history_1280_li @history_1285_li
#Long running queries / errors / trace system table #Long running queries / errors / trace system table
@history_1281_li @history_1286_li
#Migrate database tool (also from other database engines) #Migrate database tool (also from other database engines)
@history_1282_li @history_1287_li
#Shutdown compact #Shutdown compact
@history_1283_li @history_1288_li
#Optimization of distinct with index: select distinct name from test #Optimization of distinct with index: select distinct name from test
@history_1284_li @history_1289_li
#Document server mode, embedded mode, web app mode, dual mode (server+embedded) #Document server mode, embedded mode, web app mode, dual mode (server+embedded)
@history_1285_li @history_1290_li
#Stop the server: close all open databases first #Stop the server: close all open databases first
@history_1286_li @history_1291_li
#SET variable { TO | = } { value | 'value' | DEFAULT } #SET variable { TO | = } { value | 'value' | DEFAULT }
@history_1287_li @history_1292_li
#Running totals: select @running:=if(@previous=t.ID,@running,0)+t.NUM as TOTAL, @previous:=t.ID #Running totals: select @running:=if(@previous=t.ID,@running,0)+t.NUM as TOTAL, @previous:=t.ID
@history_1288_li @history_1293_li
#Better support large transactions, large updates / deletes: use less memory #Better support large transactions, large updates / deletes: use less memory
@history_1289_li @history_1294_li
#Better support large transactions, large updates / deletes: allow tables without primary key #Better support large transactions, large updates / deletes: allow tables without primary key
@history_1290_li @history_1295_li
#Support Oracle RPAD and LPAD(string, n[, pad]) (truncate the end if longer) #Support Oracle RPAD and LPAD(string, n[, pad]) (truncate the end if longer)
@history_1291_li @history_1296_li
#Allow editing NULL values in the Console #User defined aggregate functions
@history_1292_li @history_1297_li
#Updatable result sets: DatabaseMetaData.ownUpdatesAreVisible = true (for insert, delete, update) Simple solution: automatically calls 'refresh' when the result was changed. Compare with other databases. #Procedural language / script language (Javascript)
@history_1293_h3 @history_1298_h3
#Priority 2 #Priority 2
@history_1294_li @history_1299_li
#Support OSGi: http://oscar-osgi.sourceforge.net, http://incubator.apache.org/felix/index.html #Updatable result sets: DatabaseMetaData.ownUpdatesAreVisible = true (for insert, delete, update) Simple solution: automatically calls 'refresh' when the result was changed. Compare with other databases.
@history_1295_li @history_1300_li
#Procedural language / script language (Javascript) #Allow editing NULL values in the Console
@history_1296_li @history_1301_li
#Support OSGi: http://oscar-osgi.sourceforge.net, http://incubator.apache.org/felix/index.html
@history_1302_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) #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)
@history_1297_li @history_1303_li
#Set the database in an 'exclusive' mode (restrict to one user at a time) #Set the database in an 'exclusive' mode (restrict to one user at a time)
@history_1298_li @history_1304_li
#Clustering: recovery needs to becomes fully automatic. Global write lock feature. #Clustering: recovery needs to becomes fully automatic. Global write lock feature.
@history_1299_li @history_1305_li
#Deferred integrity checking (DEFERRABLE INITIALLY DEFERRED) #Deferred integrity checking (DEFERRABLE INITIALLY DEFERRED)
@history_1300_li @history_1306_li
#Groovy Stored Procedures (http://groovy.codehaus.org/Groovy+SQL) #Groovy Stored Procedures (http://groovy.codehaus.org/Groovy+SQL)
@history_1301_li @history_1307_li
#System table / function: cache usage #System table / function: cache usage
@history_1302_li @history_1308_li
#User defined aggregate functions
@history_1303_li
#Add a migration guide (list differences between databases) #Add a migration guide (list differences between databases)
@history_1304_li @history_1309_li
#Optimization: automatic index creation suggestion using the trace file? #Optimization: automatic index creation suggestion using the trace file?
@history_1305_li @history_1310_li
#Compression performance: don't allocate buffers, compress / expand in to out buffer #Compression performance: don't allocate buffers, compress / expand in to out buffer
@history_1306_li @history_1311_li
#Connection pool manager #Connection pool manager
@history_1307_li @history_1312_li
#Implement Statement.cancel for server connections #Implement Statement.cancel for server connections
@history_1308_li @history_1313_li
#Start / stop server with database URL #Start / stop server with database URL
@history_1309_li @history_1314_li
#Rebuild index functionality (other than delete the index file) #Rebuild index functionality (other than delete the index file)
@history_1310_li @history_1315_li
#Don't use deleteOnExit (bug 4513817: File.deleteOnExit consumes memory) #Don't use deleteOnExit (bug 4513817: File.deleteOnExit consumes memory)
@history_1311_li @history_1316_li
#Console: add accesskey to most important commands (A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA) #Console: add accesskey to most important commands (A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA)
@history_1312_li @history_1317_li
#Feature: a setting to delete the the log or not (for backup) #Feature: a setting to delete the the log or not (for backup)
@history_1313_li @history_1318_li
#Test with Sun ASPE1_4; JEE Sun AS PE1.4 #Test with Sun ASPE1_4; JEE Sun AS PE1.4
@history_1314_li @history_1319_li
#Test performance again with SQL Server, Oracle, DB2 #Test performance again with SQL Server, Oracle, DB2
@history_1315_li @history_1320_li
#Test with dbmonster (http://dbmonster.kernelpanic.pl/) #Test with dbmonster (http://dbmonster.kernelpanic.pl/)
@history_1316_li @history_1321_li
#Test with dbcopy (http://dbcopyplugin.sourceforge.net) #Test with dbcopy (http://dbcopyplugin.sourceforge.net)
@history_1317_li @history_1322_li
#Find a tool to view a text file >100 MB, with find, page up and down (like less) #Find a tool to view a text file >100 MB, with find, page up and down (like less)
@history_1318_li @history_1323_li
#Implement, test, document XAConnection and so on #Implement, test, document XAConnection and so on
@history_1319_li @history_1324_li
#Web site: meta keywords, description, get rid of frame set #Web site: meta keywords, description, get rid of frame set
@history_1320_li @history_1325_li
#Pluggable data type (for compression, validation, conversion, encryption) #Pluggable data type (for compression, validation, conversion, encryption)
@history_1321_li @history_1326_li
#CHECK: find out what makes CHECK=TRUE slow, move to CHECK2 #CHECK: find out what makes CHECK=TRUE slow, move to CHECK2
@history_1322_li @history_1327_li
#Improve recovery: improve code for log recovery problems (less try/catch) #Improve recovery: improve code for log recovery problems (less try/catch)
@history_1323_li @history_1328_li
#Log linear hash index changes, fast open / close #Log linear hash index changes, fast open / close
@history_1324_li @history_1329_li
#Index usage for (ID, NAME)=(1, 'Hi'); document #Index usage for (ID, NAME)=(1, 'Hi'); document
@history_1325_li @history_1330_li
#Suggestion: include jetty as Servlet Container (like LAMP) #Suggestion: include jetty as Servlet Container (like LAMP)
@history_1326_li @history_1331_li
#Trace shipping to server #Trace shipping to server
@history_1327_li @history_1332_li
#Performance / server mode: use UDP optionally? #Performance / server mode: use UDP optionally?
@history_1328_li @history_1333_li
#Version check: docs / web console (using javascript), and maybe in the library (using TCP/IP) #Version check: docs / web console (using javascript), and maybe in the library (using TCP/IP)
@history_1329_li @history_1334_li
#Aggregates: support MEDIAN #Aggregates: support MEDIAN
@history_1330_li @history_1335_li
#Web server classloader: override findResource / getResourceFrom #Web server classloader: override findResource / getResourceFrom
@history_1331_li @history_1336_li
#Cost for embedded temporary view is calculated wrong, if result is constant #Cost for embedded temporary view is calculated wrong, if result is constant
@history_1332_li @history_1337_li
#Comparison: pluggable sort order: natural sort #Comparison: pluggable sort order: natural sort
@history_1333_li @history_1338_li
#Count index range query (count(*) where id between 10 and 20) #Count index range query (count(*) where id between 10 and 20)
@history_1334_li @history_1339_li
#Eclipse plugin #Eclipse plugin
@history_1335_li @history_1340_li
#iReport to support H2 #iReport to support H2
@history_1336_li @history_1341_li
#Implement missing JDBC API (CallableStatement,...) #Implement missing JDBC API (CallableStatement,...)
@history_1337_li @history_1342_li
#Compression of the cache #Compression of the cache
@history_1338_li @history_1343_li
#Run H2 Console inside servlet (pass-through servlet of fix the JSP / app) #Run H2 Console inside servlet (pass-through servlet of fix the JSP / app)
@history_1339_li @history_1344_li
#Include SMPT (mail) server (at least client) (alert on cluster failure, low disk space,...) #Include SMPT (mail) server (at least client) (alert on cluster failure, low disk space,...)
@history_1340_li @history_1345_li
#Make the jar more modular #Make the jar more modular
@history_1341_li @history_1346_li
#Drop with restrict (currently cascade is the default) #Drop with restrict (currently cascade is the default)
@history_1342_li @history_1347_li
#JSON parser and functions #JSON parser and functions
@history_1343_li @history_1348_li
#Option for Java functions: constant/isDeterministic to allow early evaluation when all parameters are constant #Option for Java functions: constant/isDeterministic to allow early evaluation when all parameters are constant
@history_1344_li @history_1349_li
#Automatic collection of statistics (auto ANALYZE) #Automatic collection of statistics (auto ANALYZE)
@history_1345_li @history_1350_li
#Server: client ping from time to time (to avoid timeout - is timeout a problem?) #Server: client ping from time to time (to avoid timeout - is timeout a problem?)
@history_1346_li @history_1351_li
#Copy database: Tool with config GUI and batch mode, extensible (example: compare) #Copy database: Tool with config GUI and batch mode, extensible (example: compare)
@history_1347_li @history_1352_li
#Document, implement tool for long running transactions using user defined compensation statements #Document, implement tool for long running transactions using user defined compensation statements
@history_1348_li @history_1353_li
#Support SET TABLE DUAL READONLY #Support SET TABLE DUAL READONLY
@history_1349_li @history_1354_li
#Linked schema using CSV files: one schema for a directory of files; support indexes for CSV files #Linked schema using CSV files: one schema for a directory of files; support indexes for CSV files
@history_1350_li @history_1355_li
#Don't write stack traces for common exceptions like duplicate key to the log by default #Don't write stack traces for common exceptions like duplicate key to the log by default
@history_1351_li @history_1356_li
#Setting for MAX_QUERY_TIME (default no limit?) #Setting for MAX_QUERY_TIME (default no limit?)
@history_1352_li @history_1357_li
#GCJ: what is the state now? #GCJ: what is the state now?
@history_1353_li @history_1358_li
#Convert large byte[]/Strings to streams in the JDBC API (asap). #Convert large byte[]/Strings to streams in the JDBC API (asap).
@history_1354_li @history_1359_li
#Use Janino to convert Java to C++ #Use Janino to convert Java to C++
@history_1355_li @history_1360_li
#Reduce disk space usage (Derby uses less disk space?) #Reduce disk space usage (Derby uses less disk space?)
@history_1356_li @history_1361_li
#Events for: Database Startup, Connections, Login attempts, Disconnections, Prepare (after parsing), Web Server (see http://docs.openlinksw.com/virtuoso/fn_dbev_startup.html) #Events for: Database Startup, Connections, Login attempts, Disconnections, Prepare (after parsing), Web Server (see http://docs.openlinksw.com/virtuoso/fn_dbev_startup.html)
@history_1357_li @history_1362_li
#Optimization: Log compression #Optimization: Log compression
@history_1358_li @history_1363_li
#Compatibility: in MySQL, HSQLDB, /0.0 is NULL; in PostgreSQL, Derby: Division by zero #Compatibility: in MySQL, HSQLDB, /0.0 is NULL; in PostgreSQL, Derby: Division by zero
@history_1359_li @history_1364_li
#Functional tables should accept parameters from other tables (see FunctionMultiReturn) SELECT * FROM TEST T, P2C(T.A, T.R) #Functional tables should accept parameters from other tables (see FunctionMultiReturn) SELECT * FROM TEST T, P2C(T.A, T.R)
@history_1360_li @history_1365_li
#Custom class loader to reload functions on demand #Custom class loader to reload functions on demand
@history_1361_li @history_1366_li
#Test http://mysql-je.sourceforge.net/ #Test http://mysql-je.sourceforge.net/
@history_1362_li @history_1367_li
#Close all files when closing the database (including LOB files that are open on the client side) #Close all files when closing the database (including LOB files that are open on the client side)
@history_1363_li @history_1368_li
#Test Connection Pool http://jakarta.apache.org/commons/dbcp #Test Connection Pool http://jakarta.apache.org/commons/dbcp
@history_1364_li @history_1369_li
#Profiler option or profiling tool to find long running and often repeated queries (using DatabaseEventListener API) #Profiler option or profiling tool to find long running and often repeated queries (using DatabaseEventListener API)
@history_1365_li @history_1370_li
#Function to read/write a file from/to LOB #Function to read/write a file from/to LOB
@history_1366_li @history_1371_li
#Allow custom settings (@PATH for RUNSCRIPT for example) #Allow custom settings (@PATH for RUNSCRIPT for example)
@history_1367_li @history_1372_li
#Performance test: read the data (getString) and use column names to get the data #Performance test: read the data (getString) and use column names to get the data
@history_1368_li @history_1373_li
#EXE file: maybe use http://jsmooth.sourceforge.net #EXE file: maybe use http://jsmooth.sourceforge.net
@history_1369_li @history_1374_li
#SELECT ... FOR READ WAIT [maxMillisToWait] #SELECT ... FOR READ WAIT [maxMillisToWait]
@history_1370_li @history_1375_li
#Automatically delete the index file if opening it fails #Automatically delete the index file if opening it fails
@history_1371_li @history_1376_li
#Performance: Automatically build in-memory indexes if the whole table is in memory #Performance: Automatically build in-memory indexes if the whole table is in memory
@history_1372_li @history_1377_li
#H2 Console: The webclient could support more features like phpMyAdmin. #H2 Console: The webclient could support more features like phpMyAdmin.
@history_1373_li @history_1378_li
#The HELP information schema can be directly exposed in the Console #The HELP information schema can be directly exposed in the Console
@history_1374_li @history_1379_li
#Maybe use the 0x1234 notation for binary fields, see MS SQL Server #Maybe use the 0x1234 notation for binary fields, see MS SQL Server
@history_1375_li @history_1380_li
#KEY_COLUMN_USAGE (http://dev.mysql.com/doc/refman/5.0/en/information-schema.html, http://www.xcdsql.org/Misc/INFORMATION_SCHEMA%20With%20Rolenames.gif) #KEY_COLUMN_USAGE (http://dev.mysql.com/doc/refman/5.0/en/information-schema.html, http://www.xcdsql.org/Misc/INFORMATION_SCHEMA%20With%20Rolenames.gif)
@history_1376_li @history_1381_li
#Support Oracle CONNECT BY in some way: http://www.adp-gmbh.ch/ora/sql/connect_by.html, http://philip.greenspun.com/sql/trees.html #Support Oracle CONNECT BY in some way: http://www.adp-gmbh.ch/ora/sql/connect_by.html, http://philip.greenspun.com/sql/trees.html
@history_1377_li @history_1382_li
#SQL 2003 (http://www.wiscorp.com/sql_2003_standard.zip) #SQL 2003 (http://www.wiscorp.com/sql_2003_standard.zip)
@history_1378_li @history_1383_li
#http://www.jpackage.org #http://www.jpackage.org
@history_1379_li @history_1384_li
#Version column (number/sequence and timestamp based) #Version column (number/sequence and timestamp based)
@history_1380_li @history_1385_li
#Optimize getGeneratedKey: send last identity after each execute (server). #Optimize getGeneratedKey: send last identity after each execute (server).
@history_1381_li @history_1386_li
#Date: default date is '1970-01-01' (is it 1900-01-01 in the standard / other databases?) #Date: default date is '1970-01-01' (is it 1900-01-01 in the standard / other databases?)
@history_1382_li @history_1387_li
#Test and document UPDATE TEST SET (ID, NAME) = (SELECT ID*10, NAME || '!' FROM TEST T WHERE T.ID=TEST.ID); #Test and document UPDATE TEST SET (ID, NAME) = (SELECT ID*10, NAME || '!' FROM TEST T WHERE T.ID=TEST.ID);
@history_1383_li @history_1388_li
#Better space re-use in the files after deleting data (shrink the files) #Better space re-use in the files after deleting data (shrink the files)
@history_1384_li @history_1389_li
#Max memory rows / max undo log size: use block count / row size not row count #Max memory rows / max undo log size: use block count / row size not row count
@history_1385_li @history_1390_li
#Index summary is only written if log=2; maybe write it also when log=1 and everything is fine (and no in doubt transactions) #Index summary is only written if log=2; maybe write it also when log=1 and everything is fine (and no in doubt transactions)
@history_1386_li @history_1391_li
#Support 123L syntax as in Java; example: SELECT (2000000000*2) #Support 123L syntax as in Java; example: SELECT (2000000000*2)
@history_1387_li @history_1392_li
#Implement point-in-time recovery #Implement point-in-time recovery
@history_1388_li @history_1393_li
#Memory database: add a feature to keep named database open until 'shutdown' #Memory database: add a feature to keep named database open until 'shutdown'
@history_1389_li @history_1394_li
#Use the directory of the first script as the default directory for any scripts run inside that script #Use the directory of the first script as the default directory for any scripts run inside that script
@history_1390_li @history_1395_li
#Include the version name in the jar file name #Include the version name in the jar file name
@history_1391_li @history_1396_li
#Optimize IN(...), IN(select), ID=? OR ID=?: create temp table and use join #Optimize IN(...), IN(select), ID=? OR ID=?: create temp table and use join
@history_1392_li @history_1397_li
#LIKE: improved version for larger texts (currently using naive search) #LIKE: improved version for larger texts (currently using naive search)
@history_1393_li @history_1398_li
#Auto-reconnect on lost connection to server (even if the server was re-started) except if autocommit was off and there was pending transaction #Auto-reconnect on lost connection to server (even if the server was re-started) except if autocommit was off and there was pending transaction
@history_1394_li @history_1399_li
#The Script tool should work with other databases as well #The Script tool should work with other databases as well
@history_1395_li @history_1400_li
#Automatically convert to the next 'higher' data type whenever there is an overflow. #Automatically convert to the next 'higher' data type whenever there is an overflow.
@history_1396_li @history_1401_li
#Throw an exception when the application calls getInt on a Long (optional) #Throw an exception when the application calls getInt on a Long (optional)
@history_1397_li @history_1402_li
#Default date format for input and output (local date constants) #Default date format for input and output (local date constants)
@history_1398_li @history_1403_li
#Cache collation keys for performance #Cache collation keys for performance
@history_1399_li @history_1404_li
#Convert OR condition to UNION or IN if possible #Convert OR condition to UNION or IN if possible
@history_1400_li @history_1405_li
#ValueInt.convertToString and so on (remove Value.convertTo) #ValueInt.convertToString and so on (remove Value.convertTo)
@history_1401_li @history_1406_li
#Support custom Collators #Support custom Collators
@history_1402_li @history_1407_li
#Document ROWNUM usage for reports: SELECT ROWNUM, * FROM (subquery) #Document ROWNUM usage for reports: SELECT ROWNUM, * FROM (subquery)
@history_1403_li @history_1408_li
#Clustering: Reads should be randomly distributed or to a designated database on RAM #Clustering: Reads should be randomly distributed or to a designated database on RAM
@history_1404_li @history_1409_li
#Clustering: When a database is back alive, automatically synchronize with the master #Clustering: When a database is back alive, automatically synchronize with the master
@history_1405_li @history_1410_li
#Standalone tool to get relevant system properties and add it to the trace output. #Standalone tool to get relevant system properties and add it to the trace output.
@history_1406_li @history_1411_li
#Support mixed clustering mode (one embedded, the other server mode) #Support mixed clustering mode (one embedded, the other server mode)
@history_1407_li @history_1412_li
#Support 'call proc($1=value)' (PostgreSQL, Oracle) #Support 'call proc($1=value)' (PostgreSQL, Oracle)
@history_1408_li @history_1413_li
#HSQLDB compatibility: "INSERT INTO TEST(name) VALUES(?); SELECT IDENTITY()" #HSQLDB compatibility: "INSERT INTO TEST(name) VALUES(?); SELECT IDENTITY()"
@history_1409_li @history_1414_li
#Shutdown lock (shutdown can only start if there are no logins pending, and logins are delayed until shutdown ends) #Shutdown lock (shutdown can only start if there are no logins pending, and logins are delayed until shutdown ends)
@history_1410_li @history_1415_li
#Automatically delete the index file if opening it fails #Automatically delete the index file if opening it fails
@history_1411_li @history_1416_li
#DbAdapters http://incubator.apache.org/cayenne/ #DbAdapters http://incubator.apache.org/cayenne/
@history_1412_li @history_1417_li
#JAMon (proxy jdbc driver) #JAMon (proxy jdbc driver)
@history_1413_li @history_1418_li
#Console: Allow setting Null value; Alternative display format two column (for copy and paste as well) #Console: Allow setting Null value; Alternative display format two column (for copy and paste as well)
@history_1414_li @history_1419_li
#Console: Improve editing data (Tab, Shift-Tab, Enter, Up, Down, Shift+Del?) #Console: Improve editing data (Tab, Shift-Tab, Enter, Up, Down, Shift+Del?)
@history_1415_li @history_1420_li
#Console: Autocomplete Ctrl+Space inserts template #Console: Autocomplete Ctrl+Space inserts template
@history_1416_li @history_1421_li
#Google Code http://code.google.com/p/h2database/issues/list# #Google Code http://code.google.com/p/h2database/issues/list#
@history_1417_li @history_1422_li
#Simplify translation ('Donate a translation') #Simplify translation ('Donate a translation')
@history_1418_li @history_1423_li
#Option to encrypt .trace.db file #Option to encrypt .trace.db file
@history_1419_li @history_1424_li
#Write Behind Cache on SATA leads to data corruption See also http://sr5tech.com/write_back_cache_experiments.htm and http://www.jasonbrome.com/blog/archives/2004/04/03/writecache_enabled.html #Write Behind Cache on SATA leads to data corruption See also http://sr5tech.com/write_back_cache_experiments.htm and http://www.jasonbrome.com/blog/archives/2004/04/03/writecache_enabled.html
@history_1420_li @history_1425_li
#Functions with unknown return or parameter data types: serialize / deserialize #Functions with unknown return or parameter data types: serialize / deserialize
@history_1421_li @history_1426_li
#Test if idle TCP connections are closed, and how to disable that #Test if idle TCP connections are closed, and how to disable that
@history_1422_li @history_1427_li
#Try using a factory for Row, Value[] (faster?), http://javolution.org/, alternative ObjectArray / IntArray #Try using a factory for Row, Value[] (faster?), http://javolution.org/, alternative ObjectArray / IntArray
@history_1423_li @history_1428_li
#Auto-Update feature for database, .jar file #Auto-Update feature for database, .jar file
@history_1424_li @history_1429_li
#ResultSet SimpleResultSet.readFromURL(String url): id varchar, state varchar, released timestamp #ResultSet SimpleResultSet.readFromURL(String url): id varchar, state varchar, released timestamp
@history_1425_li @history_1430_li
#RANK() and DENSE_RANK(), Partition using OVER() #RANK() and DENSE_RANK(), Partition using OVER()
@history_1426_li @history_1431_li
#ROW_NUMBER (not the same as ROWNUM) #ROW_NUMBER (not the same as ROWNUM)
@history_1427_li @history_1432_li
#Partial indexing (see PostgreSQL) #Partial indexing (see PostgreSQL)
@history_1428_li @history_1433_li
#BUILD should fail if ant test fails #BUILD should fail if ant test fails
@history_1429_li @history_1434_li
#http://rubyforge.org/projects/hypersonic/ #http://rubyforge.org/projects/hypersonic/
@history_1430_li @history_1435_li
#DbVisualizer profile for H2 #DbVisualizer profile for H2
@history_1431_li @history_1436_li
#Add comparator (x === y) : (x = y or (x is null and y is null)) #Add comparator (x === y) : (x = y or (x is null and y is null))
@history_1432_li @history_1437_li
#Try to create trace file even for read only databases #Try to create trace file even for read only databases
@history_1433_li @history_1438_li
#Add a sample application that runs the H2 unit test and writes the result to a file (so it can be included in the user app) #Add a sample application that runs the H2 unit test and writes the result to a file (so it can be included in the user app)
@history_1434_li @history_1439_li
#Count on a column that can not be null would be optimized to COUNT(*) #Count on a column that can not be null would be optimized to COUNT(*)
@history_1435_li @history_1440_li
#Table order: ALTER TABLE TEST ORDER BY NAME DESC (MySQL compatibility) #Table order: ALTER TABLE TEST ORDER BY NAME DESC (MySQL compatibility)
@history_1436_li @history_1441_li
#Backup tool should work with other databases as well #Backup tool should work with other databases as well
@history_1437_li @history_1442_li
#Console: -ifExists doesn't work for the console. Add a flag to disable other dbs #Console: -ifExists doesn't work for the console. Add a flag to disable other dbs
@history_1438_li @history_1443_li
#Maybe use Fowler Noll Vo hash function #Maybe use Fowler Noll Vo hash function
@history_1439_li @history_1444_li
#Improved full text search (supports LOBs, reader / tokenizer / filter). #Improved full text search (supports LOBs, reader / tokenizer / filter).
@history_1440_li @history_1445_li
#Performance: Update in-place #Performance: Update in-place
@history_1441_li @history_1446_li
#Check if 'FSUTIL behavior set disablelastaccess 1' improves the performance (fsutil behavior query disablelastaccess) #Check if 'FSUTIL behavior set disablelastaccess 1' improves the performance (fsutil behavior query disablelastaccess)
@history_1442_li @history_1447_li
#Java static code analysis: http://pmd.sourceforge.net/ #Java static code analysis: http://pmd.sourceforge.net/
@history_1443_li @history_1448_li
#Java static code analysis: http://www.eclipse.org/tptp/ #Java static code analysis: http://www.eclipse.org/tptp/
@history_1444_li @history_1449_li
#Compatibility for CREATE SCHEMA AUTHORIZATION #Compatibility for CREATE SCHEMA AUTHORIZATION
@history_1445_li @history_1450_li
#Implement Clob / Blob truncate and the remaining functionality #Implement Clob / Blob truncate and the remaining functionality
@history_1446_li @history_1451_li
#Maybe close LOBs after closing connection #Maybe close LOBs after closing connection
@history_1447_li @history_1452_li
#Tree join functionality #Tree join functionality
@history_1448_li @history_1453_li
#Support alter table add column if table has views defined #Support alter table add column if table has views defined
@history_1449_li @history_1454_li
#Add multiple columns at the same time with ALTER TABLE .. ADD .. ADD .. #Add multiple columns at the same time with ALTER TABLE .. ADD .. ADD ..
@history_1450_li @history_1455_li
#Support trigger on the tables information_schema.tables and ...columns #Support trigger on the tables information_schema.tables and ...columns
@history_1451_li @history_1456_li
#Add H2 to Gem (Ruby install system) #Add H2 to Gem (Ruby install system)
@history_1452_li @history_1457_li
#API for functions / user tables #API for functions / user tables
@history_1453_li @history_1458_li
#Order conditions inside AND / OR to optimize the performance #Order conditions inside AND / OR to optimize the performance
@history_1454_li @history_1459_li
#Support linked JCR tables #Support linked JCR tables
@history_1455_li @history_1460_li
#Make sure H2 is supported by Execute Query: http://executequery.org/ #Make sure H2 is supported by Execute Query: http://executequery.org/
@history_1456_li @history_1461_li
#Read InputStream when executing, as late as possible (maybe only embedded mode). Problem with re-execute. #Read InputStream when executing, as late as possible (maybe only embedded mode). Problem with re-execute.
@history_1457_li @history_1462_li
#Full text search: min word length; store word positions #Full text search: min word length; store word positions
@history_1458_li @history_1463_li
#FTP Server: Implement a client to send / receive files to server (dir, get, put) #FTP Server: Implement a client to send / receive files to server (dir, get, put)
@history_1459_li @history_1464_li
#FTP Server: Implement SFTP / FTPS #FTP Server: Implement SFTP / FTPS
@history_1460_li @history_1465_li
#Add an option to the SCRIPT command to generate only portable / standard SQL #Add an option to the SCRIPT command to generate only portable / standard SQL
@history_1461_li @history_1466_li
#Test Dezign for Databases (http://www.datanamic.com) #Test Dezign for Databases (http://www.datanamic.com)
@history_1462_li @history_1467_li
#Fast library for parsing / formatting: http://javolution.org/ #Fast library for parsing / formatting: http://javolution.org/
@history_1463_li @history_1468_li
#Updatable Views (simple cases first) #Updatable Views (simple cases first)
@history_1464_li @history_1469_li
#Improve create index performance #Improve create index performance
@history_1465_li @history_1470_li
#Support ARRAY data type #Support ARRAY data type
@history_1466_li @history_1471_li
#Implement more JDBC 4.0 features #Implement more JDBC 4.0 features
@history_1467_li @history_1472_li
#H2 Console: implement a servlet to allow simple web app integration #H2 Console: implement a servlet to allow simple web app integration
@history_1468_li @history_1473_li
#Support TRANSFORM / PIVOT as in MS Access #Support TRANSFORM / PIVOT as in MS Access
@history_1469_li @history_1474_li
#Sequence: PostgreSQL compatibility (rename, create) (http://www.postgresql.org/docs/8.2/static/sql-altersequence.html) #Sequence: PostgreSQL compatibility (rename, create) (http://www.postgresql.org/docs/8.2/static/sql-altersequence.html)
@history_1470_li @history_1475_li
#SELECT * FROM (VALUES (...), (...), ....) AS alias(f1, ...) #SELECT * FROM (VALUES (...), (...), ....) AS alias(f1, ...)
@history_1471_li @history_1476_li
#Support updatable views with join on primary keys (to extend a table) #Support updatable views with join on primary keys (to extend a table)
@history_1472_li @history_1477_li
#File_Read / File_Store funktionen: FILE_STORE('test.sql', ?), FILE_READ('test.sql') #File_Read / File_Store funktionen: FILE_STORE('test.sql', ?), FILE_READ('test.sql')
@history_1473_li @history_1478_li
#Public interface for functions (not public static) #Public interface for functions (not public static)
@history_1474_li @history_1479_li
#Autocomplete: if I type the name of a table that does not exist (should say: syntax not supported) #Autocomplete: if I type the name of a table that does not exist (should say: syntax not supported)
@history_1475_li @history_1480_li
#Autocomplete: schema support: "Other Grammar","Table Expression","{[schemaName.]tableName | (select)} [[AS] newTableAlias] #Autocomplete: schema support: "Other Grammar","Table Expression","{[schemaName.]tableName | (select)} [[AS] newTableAlias]
@history_1476_li @history_1481_li
#Functions: options readonly, deterministic (pure, always return the same value) #Functions: options readonly, deterministic (pure, always return the same value)
@history_1477_li @history_1482_li
#Document FTP server, including -ftpTask option to execute / kill remote processes #Document FTP server, including -ftpTask option to execute / kill remote processes
@history_1478_li @history_1483_li
#Add jdbcx to the javadocs #Add jdbcx to the javadocs
@history_1479_li @history_1484_li
#Shrink the data file without closing the database (if the end of the file is empty) #Shrink the data file without closing the database (if the end of the file is empty)
@history_1480_li @history_1485_li
#Delay reading the row if data is not required #Delay reading the row if data is not required
@history_1481_li @history_1486_li
#Eliminate undo log records if stored on disk (just one pointer per block, not per record) #Eliminate undo log records if stored on disk (just one pointer per block, not per record)
@history_1482_li @history_1487_li
#Feature matrix like here: http://www.inetsoftware.de/products/jdbc/mssql/features/default.asp. #Feature matrix like here: http://www.inetsoftware.de/products/jdbc/mssql/features/default.asp.
@history_1483_li @history_1488_li
#Updatable result set on table without primary key or unique index #Updatable result set on table without primary key or unique index
@history_1484_li @history_1489_li
#Use LinkedList instead of ArrayList where applicable #Use LinkedList instead of ArrayList where applicable
@history_1485_li @history_1490_li
#Optimization: (A=B AND B=C) > (A=B AND B=C AND A=C) #Optimization: (A=B AND B=C) > (A=B AND B=C AND A=C)
@history_1486_li @history_1491_li
#Support % operator (modulo) #Support % operator (modulo)
@history_1487_li @history_1492_li
#Large subqueries: close them when the main query is closed, not earlier (so result can be reused) #Large subqueries: close them when the main query is closed, not earlier (so result can be reused)
@history_1488_li @history_1493_li
#Support 1+'2'=3, '1'+'2'='12' (MS SQL Server compatibility) #Support 1+'2'=3, '1'+'2'='12' (MS SQL Server compatibility)
@history_1489_li @history_1494_li
#Support nested transactions #Support nested transactions
@history_1490_li @history_1495_li
#Add a benchmark for big databases, and one for many users #Add a benchmark for big databases, and one for many users
@history_1491_li @history_1496_li
#Compression in the result set (repeating values in the same column) #Compression in the result set (repeating values in the same column)
@history_1492_li @history_1497_li
#Improve command line consistency (+/- options, or true false options) #Improve command line consistency (+/- options, or true false options)
@history_1493_li @history_1498_li
#Allow to use the catalog name in statements: [[catalog.]schema.]object #Allow to use the catalog name in statements: [[catalog.]schema.]object
@history_1494_li @history_1499_li
#Support curtimestamp (like curtime, curdate) #Support curtimestamp (like curtime, curdate)
@history_1495_li @history_1500_li
#Support ANALYZE {TABLE|INDEX} tableName COMPUTE|ESTIMATE|DELETE STATISTICS ptnOption options #Support ANALYZE {TABLE|INDEX} tableName COMPUTE|ESTIMATE|DELETE STATISTICS ptnOption options
@history_1496_li @history_1501_li
#Support Sequoia (Continuent.org) #Support Sequoia (Continuent.org)
@history_1497_li @history_1502_li
#Dynamic length numbers / special methods for DataPage.writeByte / writeShort / Ronni Nielsen #Dynamic length numbers / special methods for DataPage.writeByte / writeShort / Ronni Nielsen
@history_1498_li @history_1503_li
#Pluggable tracing system, ThreadPool, (AvalonDB / deebee / Paul Hammant) #Pluggable tracing system, ThreadPool, (AvalonDB / deebee / Paul Hammant)
@history_1499_li @history_1504_li
#Recursive Queries (see details) #Recursive Queries (see details)
@history_1500_li @history_1505_li
#Use index on boolean flag (see details) #Use index on boolean flag (see details)
@history_1501_li @history_1506_li
#Add build for embedded database only #Add build for embedded database only
@history_1502_li @history_1507_li
#Release locks (shared or exclusive) on demand #Release locks (shared or exclusive) on demand
@history_1503_li @history_1508_li
#Support catalog names #Support catalog names
@history_1504_li @history_1509_li
#Add object id to metadata tables #Add object id to metadata tables
@history_1505_li @history_1510_li
#Support OUTER UNION #Support OUTER UNION
@history_1506_li @history_1511_li
#Support Parameterized Views (similar to CSVREAD, but using just SQL for the definition) #Support Parameterized Views (similar to CSVREAD, but using just SQL for the definition)
@history_1507_li @history_1512_li
#Implement a command line SQL utility similar to HenPlus: http://henplus.sourceforge.net #Implement a command line SQL utility similar to HenPlus: http://henplus.sourceforge.net
@history_1508_li @history_1513_li
#A way (JDBC driver) to map an URL (jdbc:h2map:c1) to a connection object #A way (JDBC driver) to map an URL (jdbc:h2map:c1) to a connection object
@history_1509_li @history_1514_li
#Build script for the embedded functionality only (h2embedded.jar) #Build script for the embedded functionality only (h2embedded.jar)
@history_1510_li @history_1515_li
#Option for SCRIPT to only process one or a set of tables, and append to a file #Option for SCRIPT to only process one or a set of tables, and append to a file
@history_1511_li @history_1516_li
#Support using a unique index for IS NULL (including linked tables) #Support using a unique index for IS NULL (including linked tables)
@history_1512_li @history_1517_li
#Support linked tables to the current database #Support linked tables to the current database
@history_1513_li @history_1518_li
#Support dynamic linked schema (automatically adding/updating/removing tables) #Support dynamic linked schema (automatically adding/updating/removing tables)
@history_1514_li @history_1519_li
#Compatibility with Derby: VALUES(1), (2); SELECT * FROM (VALUES (1), (2)) AS myTable(c1) #Compatibility with Derby: VALUES(1), (2); SELECT * FROM (VALUES (1), (2)) AS myTable(c1)
@history_1515_li @history_1520_li
#Compatibility: # is the start of a single line comment (MySQL) but date quote (Access). Mode specific #Compatibility: # is the start of a single line comment (MySQL) but date quote (Access). Mode specific
@history_1516_li @history_1521_li
#Run benchmarks with JDK 1.5, JDK 1.6, java -server #Run benchmarks with JDK 1.5, JDK 1.6, java -server
@history_1517_li @history_1522_li
#Optimizations: Faster hash function for strings, byte arrays, big decimal #Optimizations: Faster hash function for strings, byte arrays, big decimal
@history_1518_li @history_1523_li
#Improve trace feature: add replay functionality #Improve trace feature: add replay functionality
@history_1519_li @history_1524_li
#DatabaseEventListener: callback for all operations (including expected time, RUNSCRIPT) and cancel functionality #DatabaseEventListener: callback for all operations (including expected time, RUNSCRIPT) and cancel functionality
@history_1520_li @history_1525_li
#H2 Console / large result sets: use 'streaming' instead of building the page in-memory #H2 Console / large result sets: use 'streaming' instead of building the page in-memory
@history_1521_li @history_1526_li
#Benchmark: add a graph to show how databases scale (performance/database size) #Benchmark: add a graph to show how databases scale (performance/database size)
@history_1522_li @history_1527_li
#Implement a SQLData interface to map your data over to a custom object #Implement a SQLData interface to map your data over to a custom object
@history_1523_li @history_1528_li
#Extend H2 Console to run tools (show command line as well) #Extend H2 Console to run tools (show command line as well)
@history_1524_li @history_1529_li
#Make DDL (Data Definition) operations transactional #Make DDL (Data Definition) operations transactional
@history_1525_li @history_1530_li
#Sequence: add features [NO] MINVALUE, MAXVALUE, CACHE, CYCLE #Sequence: add features [NO] MINVALUE, MAXVALUE, CACHE, CYCLE
@history_1526_li @history_1531_li
#Allow execution time prepare for SELECT * FROM CSVREAD(?, 'columnNameString') #Allow execution time prepare for SELECT * FROM CSVREAD(?, 'columnNameString')
@history_1527_li @history_1532_li
#Support multiple directories (on different hard drives) for the same database #Support multiple directories (on different hard drives) for the same database
@history_1528_li @history_1533_li
#Server protocol: use challenge response authentication, but client sends hash(user+password) encrypted with response #Server protocol: use challenge response authentication, but client sends hash(user+password) encrypted with response
@history_1529_li @history_1534_li
#Support EXEC[UTE] (doesn't return a result set, compatible to MS SQL Server) #Support EXEC[UTE] (doesn't return a result set, compatible to MS SQL Server)
@history_1530_li @history_1535_li
#GROUP BY and DISTINCT: support large groups (buffer to disk), do not keep large sets in memory #GROUP BY and DISTINCT: support large groups (buffer to disk), do not keep large sets in memory
@history_1531_li @history_1536_li
#Support native XML data type #Support native XML data type
@history_1532_li @history_1537_li
#Support triggers with a string property or option: SpringTrigger, OSGITrigger #Support triggers with a string property or option: SpringTrigger, OSGITrigger
@history_1533_li @history_1538_li
#Clustering: adding a node should be very fast and without interrupting clients (very short lock) #Clustering: adding a node should be very fast and without interrupting clients (very short lock)
@history_1534_li @history_1539_li
#Support materialized views (using triggers) #Support materialized views (using triggers)
@history_1535_li @history_1540_li
#Store dates in local timezone (portability of database files) #Store dates in local timezone (portability of database files)
@history_1536_li @history_1541_li
#Ability to resize the cache array when resizing the cache #Ability to resize the cache array when resizing the cache
@history_1537_li @history_1542_li
#Automatic conversion from WHERE X>10 AND X>20 to X>20 #Automatic conversion from WHERE X>10 AND X>20 to X>20
@history_1538_li @history_1543_li
#Time based cache writing (one second after writing the log) #Time based cache writing (one second after writing the log)
@history_1539_li @history_1544_li
#Write a H2 driver for http://db.apache.org/ddlutils/ #Write a H2 driver for http://db.apache.org/ddlutils/
@history_1540_li @history_1545_li
#Index usage for REGEXP LIKE. #Index usage for REGEXP LIKE.
@history_1541_li @history_1546_li
#Add a role DBA (like ADMIN). #Add a role DBA (like ADMIN).
@history_1542_li @history_1547_li
#Automatic mode: jdbc:h2:auto: (embedded mode if possible, if not use server mode). Problem: what to do when server stops while others are connected to it. #Automatic mode: jdbc:h2:auto: (embedded mode if possible, if not use server mode). Problem: what to do when server stops while others are connected to it.
@history_1543_li @history_1548_li
#Access rights: remember the owner of an object. COMMENT: allow owner of object to change it. #Access rights: remember the owner of an object. COMMENT: allow owner of object to change it.
@history_1544_li @history_1549_li
#Implement INSTEAD OF trigger. #Implement INSTEAD OF trigger.
@history_1545_li @history_1550_li
#Access rights: Finer grained access control (grant access for specific functions) #Access rights: Finer grained access control (grant access for specific functions)
@history_1546_li @history_1551_li
#Support N'text' #Support N'text'
@history_1547_li @history_1552_li
#Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger #Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger
@history_1548_li @history_1553_li
#Support DESCRIBE like MySQL or Oracle (DESC|DESCRIBE {[schema.]object[@connect_identifier]}) #Support DESCRIBE like MySQL or Oracle (DESC|DESCRIBE {[schema.]object[@connect_identifier]})
@history_1549_li @history_1554_li
#Set a connection read only (Connection.setReadOnly) #Set a connection read only (Connection.setReadOnly)
@history_1550_li @history_1555_li
#In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key #In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key
@history_1551_li @history_1556_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). #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).
@history_1552_li @history_1557_li
#Read-only sessions (Connection.setReadOnly) #Read-only sessions (Connection.setReadOnly)
@history_1553_li @history_1558_li
#Support compatibility for jdbc:hsqldb:res: #Support compatibility for jdbc:hsqldb:res:
@history_1554_li @history_1559_li
#In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true) #In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true)
@history_1555_li @history_1560_li
#Provide a simple, lightweight O/R mapping tool #Provide a simple, lightweight O/R mapping tool
@history_1556_li @history_1561_li
#Provide an Java SQL builder with standard and H2 syntax #Provide an Java SQL builder with standard and H2 syntax
@history_1557_li @history_1562_li
#Data compression for in-memory database #Data compression for in-memory database
@history_1558_li @history_1563_li
#Trace: write os, file system, vm,... when opening the database #Trace: write os, file system, vm,... when opening the database
@history_1559_li @history_1564_li
#Trace: write dangerous operations (set log 0,...) in every case (including when opening the database) #Trace: write dangerous operations (set log 0,...) in every case (including when opening the database)
@history_1560_li @history_1565_li
#ParameterMetaData should return correct data type where possible (INSERT for example) #ParameterMetaData should return correct data type where possible (INSERT for example)
@history_1561_li @history_1566_li
#Support indexes for views (probably requires materialized views) #Support indexes for views (probably requires materialized views)
@history_1562_li @history_1567_li
#Linked tables that point to the same database should share the connection #Linked tables that point to the same database should share the connection
@history_1563_li @history_1568_li
#Use log for rollback #Use log for rollback
@history_1564_li @history_1569_li
#Document SET SEARCH_PATH, BEGIN, EXECUTE, $ parameters #Document SET SEARCH_PATH, BEGIN, EXECUTE, $ parameters
@history_1565_li @history_1570_li
#Complete Javadocs for ErrorCode messages and add to docs #Complete Javadocs for ErrorCode messages and add to docs
@history_1566_li @history_1571_li
#Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6 #Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6
@history_1567_li @history_1572_li
#Document org.h2.samples.MixedMode #Document org.h2.samples.MixedMode
@history_1568_li @history_1573_li
#Server: use one listener (detect if the request comes from an PG or TCP client) #Server: use one listener (detect if the request comes from an PG or TCP client)
@history_1569_li @history_1574_li
#Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility) #Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility)
@history_1570_li @history_1575_li
#Support data type INTERVAL #Support data type INTERVAL
@history_1571_li @history_1576_li
#NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ... #NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ...
@history_1572_li @history_1577_li
#Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200 #Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200
@history_1573_li @history_1578_li
#Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER #Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER
@history_1574_li @history_1579_li
#Support setQueryTimeout (using System.currentTimeMillis in a loop; not using a thread) #Support setQueryTimeout (using System.currentTimeMillis in a loop; not using a thread)
@history_1575_h3 @history_1580_h3
#Not Planned #Not Planned
@history_1576_li @history_1581_li
#HSQLDB (did) support this: select id i from test where i>0 (other databases don't) #HSQLDB (did) support this: select id i from test where i>0 (other databases don't)
@history_1577_li @history_1582_li
#String.intern (so that Strings can be compared with ==) will not be used because some VMs have problems when used extensively #String.intern (so that Strings can be compared with ==) will not be used because some VMs have problems when used extensively
@history_1578_h2 @history_1583_h2
#Supporters #Supporters
@history_1579_p @history_1584_p
#Many thanks for those who helped by finding and reporting bugs, gave valuable feedback, spread the word and have translated this project. Also many thanks to the donors who contributed via PayPal: #Many thanks for those who helped by finding and reporting bugs, gave valuable feedback, spread the word and have translated this project. Also many thanks to the donors who contributed via PayPal:
@history_1580_li @history_1585_li
#Florent Ramiere, France #Florent Ramiere, France
@history_1581_li @history_1586_li
#Pete Haidinyak, USA #Pete Haidinyak, USA
@history_1582_li @history_1587_li
#Jun Iyama, Japan #Jun Iyama, Japan
@history_1583_li @history_1588_li
#Antonio Casqueiro, Portugal #Antonio Casqueiro, Portugal
@history_1584_li @history_1589_li
#lumber-mill.co.jp, Japan #lumber-mill.co.jp, Japan
@installation_1000_h1 @installation_1000_h1
...@@ -4991,7 +5006,7 @@ Mit Maven 2 ...@@ -4991,7 +5006,7 @@ Mit Maven 2
#Download #Download
@mainWeb_1007_td @mainWeb_1007_td
#Version 1.0.58 (2007-09-15): #Version 1.0.59 (2007-10-03):
@mainWeb_1008_a @mainWeb_1008_a
#Windows Installer (2.7 MB) #Windows Installer (2.7 MB)
...@@ -6883,3 +6898,243 @@ Kompilieren ...@@ -6883,3 +6898,243 @@ Kompilieren
@tutorial_1144_p @tutorial_1144_p
#You can also call the index from within a Java application: #You can also call the index from within a Java application:
@~history_1013_h3
#Version 1.0.59 (2007-10-03)
@~history_1013_li
#A PreparedStatement that was cancelled could not be reused. Fixed.
@~history_1014_li
#When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed.
@~history_1025_h3
#Version 1.0.58 (2007-09-15)
@~history_1029_h3
#Version 1.0.58 (2007-09-15)
@~history_1029_li
#When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used.
@~history_1030_li
#System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi.
@~history_1050_h3
#Version 1.0.57 (2007-08-25)
@~history_1054_h3
#Version 1.0.57 (2007-08-25)
@~history_1054_li
#Opening large read-only databases was very slow. Fixed.
@~history_1055_li
#New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome.
@~history_1077_h3
#Version 1.0.56 (2007-08-02)
@~history_1081_h3
#Version 1.0.56 (2007-08-02)
@~history_1081_li
#Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem.
@~history_1082_li
#A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete).
@~history_1104_h3
#Version 1.0.55 (2007-07-12)
@~history_1108_h3
#Version 1.0.55 (2007-07-12)
@~history_1108_li
#In some situations, when many tables with LOB columns were modified (ALTER TABLE), large objects were deleted. Fixed.
@~history_1109_li
#Support for the system property baseDir. This works for embedded databases as well. The setting is supported by the H2 Console using -Dh2.baseDir or -baseDir
@~history_1130_h3
#Version 1.0.50 (2007-06-17)
@~history_1134_h3
#Version 1.0.50 (2007-06-17)
@~history_1134_li
#If a Reader or InputStream of a LOB is not closed, the LOB can not be deleted (embedded mode only). The exception is typically 'Error while renaming file'). As a workaround, set the system property 'h2.lobCloseBetweenReads' to true to close the LOB files between read operations. However this slows down reading.
@~history_1135_li
#File names starting with ~ are now in the user directory (Java system property user.home)
@~history_1155_h3
#Version 1.0.46 (2007-04-29)
@~history_1159_h3
#Version 1.0.46 (2007-04-29)
@~history_1159_li
#New function TABLE to define ad-hoc (temporary) tables in a query. This also solves problems with variable-size IN(...) queries: instead of SELECT * FROM TEST WHERE ID IN(?, ?, ...) you can now write: SELECT * FROM TABLE(ID INT=?) X, TEST WHERE X.ID=TEST.ID In this case, the index is used.
@~history_1160_li
#Unnamed private in-memory database (jdbc:h2:mem:) were not 'private' as documented. Fixed.
@~history_1189_h3
#Version 1.0.44 (2007-03-04)
@~history_1193_h3
#Version 1.0.44 (2007-03-04)
@~history_1193_li
#Now the server tool (org.h2.tools.Server) terminates with an exit code if a problem occured.
@~history_1194_li
#System sequences (automatically created sequences for IDENTITY or AUTO_INCREMENT columns) are now random (UUIDs) to avoid clashes when merging databases using RUNSCRIPT.
@~history_1206_h3
#Version 1.0.41 (2007-01-30)
@~history_1210_h3
#Version 1.0.41 (2007-01-30)
@~history_1210_li
#Benchmark: Added a multi-client test case, BenchB (similar to TPC-B).
@~history_1211_li
#Experimental online backup feature using the SQL statement BACKUP TO 'fileName'. This creates a backup in the form of a zip file. Unlike the SCRIPT TO command, the data tables are not locked.
@~history_1221_h3
#Version 1.0.40 (2007-01-17)
@~history_1225_h3
#Version 1.0.40 (2007-01-17)
@~history_1225_li
#Fixed a problem where data in the log file was not written to the data file (recovery failure) after a crash, if an index was deleted previously.
@~history_1226_li
#Setting the collation (SET COLLATOR) was very slow on some systems (up to 24 seconds). Thanks a lot to Martina Nissler for finding this problem!
@~history_1233_h3
#Version 1.0.36 (2007-01-02)
@~history_1237_h3
#Version 1.0.36 (2007-01-02)
@~history_1237_li
#Client trace files now created in the directory 'trace.db' and no longer the application directory. This can be changed using the system property h2.clientTraceDirectory.
@~history_1238_li
#It was possible to drop the sequence of a temporary tables with DROP ALL OBJECTS, resulting in a null pointer exception afterwards.
@~history_1245_h3
#Version 1.0.25 (2006-08-31)
@~history_1248_h3
#Version 0.9 (2005-12-13)
@~history_1249_h3
#Version 1.0.25 (2006-08-31)
@~history_1249_li
#First public release.
@~history_1250_h2
#Roadmap
@~history_1250_li
#In some situations, wide b-tree indexes (with large VARCHAR columns for example) could get corrupted. Fixed.
@~history_1251_h3
#Highest Priority
@~history_1252_h3
#Version 0.9 (2005-12-13)
@~history_1252_li
#Improve test code coverage
@~history_1253_li
#First public release.
@~history_1254_h2
#Roadmap
@~history_1254_li
#Test very large databases and LOBs (up to 256 GB)
@~history_1255_h3
#Highest Priority
@~history_1255_li
#Test multi-threaded in-memory db access
@~history_1256_h3
#In Version 1.1
@~history_1256_li
#Improve test code coverage
@~history_1260_h3
#In Version 1.1
@~history_1260_li
#Change Constants.DEFAULT_MAX_MEMORY_UNDO to 10000 (and change the docs). Test.
@~history_1261_li
#Add version number. Install directory: h2-1.0, jar file: h2-1.0.jar. Micro version: use build number, staring with 1.1.100
@~history_1265_h3
#Priority 1
@~history_1269_h3
#Priority 1
@~history_1269_li
#More tests with MULTI_THREADED=1
@~history_1270_li
#MVCC (Multi Version Concurrency Control)
@~history_1293_h3
#Priority 2
@~history_1297_h3
#Priority 2
@~history_1297_li
#Set the database in an 'exclusive' mode (restrict to one user at a time)
@~history_1298_li
#Updatable result sets: DatabaseMetaData.ownUpdatesAreVisible = true (for insert, delete, update) Simple solution: automatically calls 'refresh' when the result was changed. Compare with other databases.
@~history_1575_h3
#Not Planned
@~history_1578_h2
#Supporters
@~history_1579_h3
#Not Planned
@~history_1579_p
#Many thanks for those who helped by finding and reporting bugs, gave valuable feedback, spread the word and have translated this project. Also many thanks to the donors who contributed via PayPal:
@~history_1580_li
#HSQLDB (did) support this: select id i from test where i>0 (other databases don't)
@~history_1582_h2
#Supporters
@~history_1582_li
#Jun Iyama, Japan
@~history_1583_li
#Antonio Casqueiro, Portugal
@~history_1583_p
#Many thanks for those who helped by finding and reporting bugs, gave valuable feedback, spread the word and have translated this project. Also many thanks to the donors who contributed via PayPal:
@~history_1584_li
#Florent Ramiere, France
h2/src/docsrc/text/_docs_en.utf8.txt
浏览文件 @ 67a90bac
...@@ -2795,1731 +2795,1746 @@ Change Log ...@@ -2795,1731 +2795,1746 @@ Change Log
Version 1.0 (Current) Version 1.0 (Current)
@history_1009_h3 @history_1009_h3
Version 1.0.59 (2007-10-03) Version 1.0.60 (2007-10-?)
@history_1010_li @history_1010_li
When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed. Prepared statements could not be used after data definition statements (creating tables and so on). Fixed.
@history_1011_li @history_1011_li
If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed. PreparedStatement.setMaxRows could not be changed to a higher value after the statement was executed.
@history_1012_li @history_1012_li
Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed. The H2 Console could not connect twice to the same H2 embedded database at the same time. Fixed.
@history_1013_li @history_1013_li
CSVREAD, RUNSCRIPT and so on now support URLs as well, using URL.openStream(). Example: select * from csvread('jar:file:///c:/temp/test.jar!/test.csv');
@history_1014_h3
Version 1.0.59 (2007-10-03)
@history_1015_li
When the data type was unknown in a subquery, sometimes the wrong exception (ArrayIndexOutOfBounds) was thrown. Fixed.
@history_1016_li
If the process was killed while the database was running, sometimes the database could not be opened ('double allocation') except when the system property h2.check was set to false. Fixed.
@history_1017_li
Multi-threaded kernel (MULTI_THREADED=1): A synchronization problem has been fixed.
@history_1018_li
A PreparedStatement that was cancelled could not be reused. Fixed. A PreparedStatement that was cancelled could not be reused. Fixed.
@history_1014_li @history_1019_li
H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow). H2 Console: Progress information when logging into a H2 embedded database (useful when opening a database is slow).
@history_1015_li @history_1020_li
When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed. When the database was closed while logging was disabled (LOG 0), re-opening the database was slow. Fixed.
@history_1016_li @history_1021_li
Fulltext search is now documented (in the Tutorial). Fulltext search is now documented (in the Tutorial).
@history_1017_li @history_1022_li
The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed. The Console did not refresh the table list if the CREATE TABLE statement started with a comment. Fixed.
@history_1018_li @history_1023_li
When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed. When creating a table using CREATE TABLE .. AS SELECT, the precision for some data types (for example VARCHAR) was set to the default precision. Fixed.
@history_1019_li @history_1024_li
When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed. When using the (undocumented) in-memory file system (jdbc:h2:memFS:x or jdbc:h2:memLZF:x), and using multiple connections, a ConcurrentModificationException could occur. Fixed.
@history_1020_li @history_1025_li
REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used. REGEXP compatibility: So far String.matches was used, but for compatibility with MySQL, now Matcher.find is used.
@history_1021_li @history_1026_li
SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste. SCRIPT: the SQL statements in the result set now include the terminating semicolon as well. Simplifies copy and paste.
@history_1022_li @history_1027_li
When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed. When using a subquery with group by as a table, some columns could not be used in the where condition in the outer query. Example: SELECT * FROM (SELECT ID, COUNT(*) C FROM TEST) WHERE C > 100. Fixed.
@history_1023_li @history_1028_li
Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed. Views with subqueries as tables and queries with nested subqueries as tables did not always work. Fixed.
@history_1024_li @history_1029_li
Compatibility: comparing columns with constants that are out of range does not throw an exception. Compatibility: comparing columns with constants that are out of range does not throw an exception.
@history_1025_h3 @history_1030_h3
Version 1.0.58 (2007-09-15) Version 1.0.58 (2007-09-15)
@history_1026_li @history_1031_li
System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi. System.exit is no longer called by the WebServer, the Console and the Server tool (except to set the exit code if required). This is important when using OSGi.
@history_1027_li @history_1032_li
Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false. Optimization for independent subqueries. For example, this query can now an index: SELECT * FROM TEST WHERE ID = (SELECT MAX(ID) FROM TEST) This can be disabled by setting the system property h2.optimizeSubqueryCache to false.
@history_1028_li @history_1033_li
The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*). The explain plan now says: /* direct lookup query */ if the query can be processed directly without reading rows, for example when using MIN(indexed column), MAX(indexed column), or COUNT(*).
@history_1029_li @history_1034_li
When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used. When using IFNULL, NULLIF, COALESCE, LEAST, or GREATEST, and the first parameter was ?, an exception was thrown. Now the highest data type of all parameters is used.
@history_1030_li @history_1035_li
When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed. When comparing TINYINT or SMALLINT columns against constants, the index was not used. Fixed.
@history_1031_li @history_1036_li
Maven 2: new version are now automatically synced with the central repositories. Maven 2: new version are now automatically synced with the central repositories.
@history_1032_li @history_1037_li
The default value for MAX_MEMORY_UNDO is now 100000. The default value for MAX_MEMORY_UNDO is now 100000.
@history_1033_li @history_1038_li
The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it. The documentation indexer does no longer index Japanese pages. If somebody knows how to split Japanese into words please post it.
@history_1034_li @history_1039_li
Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..). Oracle compatibility: SYSDATE now returns a timestamp. CHR(..) is now an alias for CHAR(..).
@history_1035_li @history_1040_li
After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed. After deleting data, empty space in the database files was not efficiently reused (but it was reused when opening the database). This has been fixed.
@history_1036_li @history_1041_li
About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is an additionally problem, see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876. A workaround has been implemented. About 230 bytes per database was leaked. This is a problem for applications opening and closing many thousand databases. The main problem: a shutdown hook was added but never removed. Fixed. In JDK 1.4, there is an additionally problem, see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4197876. A workaround has been implemented.
@history_1037_li @history_1042_li
Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values. Optimization for COLUMN IN(.., NULL) if the column does not allow NULL values.
@history_1038_li @history_1043_li
Using spaces in column and table aliases was not supported when used inside a view or temporary view. Using spaces in column and table aliases was not supported when used inside a view or temporary view.
@history_1039_li @history_1044_li
The version (build) number is now included in the manifest file. The version (build) number is now included in the manifest file.
@history_1040_li @history_1045_li
In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second. In some systems, SecureRandom.generateSeed is very slow (taking one minute or more). For those cases, an alternative method is used that takes less than one second.
@history_1041_li @history_1046_li
The database file sizes are now increased at most 32 MB at any time. The database file sizes are now increased at most 32 MB at any time.
@history_1042_li @history_1047_li
New method DatabaseEventListener.opened that is called just after opening a database. New method DatabaseEventListener.opened that is called just after opening a database.
@history_1043_li @history_1048_li
When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query. When using the Console with Internet Explorer 6.0 or 7.0, a Javascript error was thrown after clearing the query.
@history_1044_li @history_1049_li
A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception. A database can now be opened even if class of a user defined function is not in the classpath. Trying to call the function will throws an exception.
@history_1045_li @history_1050_li
User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail. User defined functions and constants may not overload built-in functions and constants. This didn't work before, but now trying to create such an object will fail.
@history_1046_li @history_1051_li
Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data). Improved MultiDimension tool (for spatial queries): in the last few releases the tool was actually slower than using a regular query (because index lookup got faster, and because the tool didn't support prepared statements) Now the tool generates prepared statements, and the performance is better again (about 5 times faster for a reasonable amount of data).
@history_1047_li @history_1052_li
Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL. Adding a foreign key or when re-enabling referential integrity for a table failed when checking was enabled and the reference contained NULL.
@history_1048_li @history_1053_li
For PgServer, character encoding other than UTF-8 did not work correctly. Fixed. For PgServer, character encoding other than UTF-8 did not work correctly. Fixed.
@history_1049_li @history_1054_li
Using a function in a GROUP BY expression that is used in a view as a condition did not always work. Using a function in a GROUP BY expression that is used in a view as a condition did not always work.
@history_1050_h3 @history_1055_h3
Version 1.0.57 (2007-08-25) Version 1.0.57 (2007-08-25)
@history_1051_li @history_1056_li
New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome. New experimental feature MVCC (multi version concurrency control). Can be set as a option when opening the database (jdbc:h2:test;MVCC=TRUE) or as a system property (-Dh2.mvcc=true). This is work-in-progress, use it at your own risk. Feedback is welcome.
@history_1052_li @history_1057_li
The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change. The version number is now major.minor.micro where micro is the build number. Not all version are public, so there may be gaps in the micro. The minor changes when there is a file format change.
@history_1053_li @history_1058_li
The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time. The backup tool (org.h2.tools.Backup) did not work. The restore tool did not work when the -db parameter was used. Fixed. The documentation of the backup tool has been changed: only one database may be backed up at any time.
@history_1054_li @history_1059_li
Opening large read-only databases was very slow. Fixed. Opening large read-only databases was very slow. Fixed.
@history_1055_li @history_1060_li
New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot! New Japanese translation of the error messages thanks to Ikemoto Masahiro. Thanks a lot!
@history_1056_li @history_1061_li
Disabling / enabling referential integrity for a table can now be used inside a transaction. Disabling / enabling referential integrity for a table can now be used inside a transaction.
@history_1057_li @history_1062_li
Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed. Rights checking for dynamic tables (SELECT * FROM (SELECT ...)) did not work. Fixed.
@history_1058_li @history_1063_li
Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed. Creating more than 10 views that depend on each other was very slow. Reconnecting was slow as well. Fixed.
@history_1059_li @history_1064_li
When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed. When used as as Servlet, the H2 Console did not work with SSL (using Tomcat). Fixed.
@history_1060_li @history_1065_li
When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed. When altering a table with foreign key constraint, if there was no manual index created for the referenced columns, the automatically created index was dropped while still being used. Fixed.
@history_1061_li @history_1066_li
Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table. Check and foreign key constraints now checks if the existing data is consistent (this can be disabled by appending NOCHECK). It is also possible to check existing data when re-enabling referential integrity for a table.
@history_1062_li @history_1067_li
Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now. Some unit tests failed on Linux because the file system works differently. The unit tests are fixed and should work now.
@history_1063_li @history_1068_li
Can now incrementally translate the documentation. See also FAQ. Can now incrementally translate the documentation. See also FAQ.
@history_1064_li @history_1069_li
Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense. Improved error messages: some tools can't show the root cause of an exception. Adding the message of the root cause to the message of the thrown exception now where it makes sense.
@history_1065_li @history_1070_li
The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables. The H2 Console can now connect to databases using JNDI. The driver class name must be a javax.naming.Context, (for example javax.naming.InitialContext), and the URL the resource name (for example java:comp/env/jdbc/Test). This should also work for linked tables.
@history_1066_li @history_1071_li
Google translate did not work for the H2 homepage. It should be fixed now. Google translate did not work for the H2 homepage. It should be fixed now.
@history_1067_li @history_1072_li
The CONVERT function did not work with views when using UNION. The CONVERT function did not work with views when using UNION.
@history_1068_li @history_1073_li
The build now issues a warning if the source code is switched to the wrong version. The build now issues a warning if the source code is switched to the wrong version.
@history_1069_li @history_1074_li
The default lock mode is now read committed instead of serialized. The default lock mode is now read committed instead of serialized.
@history_1070_li @history_1075_li
PG server: data was truncated when reading large VARCHAR columns and decimal columns. PG server: data was truncated when reading large VARCHAR columns and decimal columns.
@history_1071_li @history_1076_li
PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed. PG server: when the same database was accessed multiple times using the PostgreSQL ODBC driver, the pg_catalog schema update failed, and connecting to the database was not possible. Fixed.
@history_1072_li @history_1077_li
Some file operations didn't work for files in the root directory. Fixed. Some file operations didn't work for files in the root directory. Fixed.
@history_1073_li @history_1078_li
In the Restore tool, the parameter -file did not work. Fixed. In the Restore tool, the parameter -file did not work. Fixed.
@history_1074_li @history_1079_li
Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported. Two-phase commit: commit with transaction name was only supported in the recovery scan. Now it is always supported.
@history_1075_li @history_1080_li
The column name C_CURRENT_TIMESTAMP did not work in the last release. The column name C_CURRENT_TIMESTAMP did not work in the last release.
@history_1076_li @history_1081_li
OpenOffice compatibility: support database name in column names. OpenOffice compatibility: support database name in column names.
@history_1077_h3 @history_1082_h3
Version 1.0.56 (2007-08-02) Version 1.0.56 (2007-08-02)
@history_1078_li @history_1083_li
A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete). A new tool to help translation has been implemented: src/tools/org/h2/tools/i18n/PrepareTranslation. This tool can detect delta changes in the original (English) and prepends '#' in translation if the original text was changed. It can also extract text from the user documentation (however, it is incomplete).
@history_1079_li @history_1084_li
The error messages (src/main/org/h2/res/_*.*) can now be translated. The error messages (src/main/org/h2/res/_*.*) can now be translated.
@history_1080_li @history_1085_li
Part of the documentation has been translated to Japanese by Yusuke Fukushima. Part of the documentation has been translated to Japanese by Yusuke Fukushima.
@history_1081_li @history_1086_li
Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem. Some Unicode characters where not supported as identifier name. Thanks Yusuke Fukushima for reporting this problem.
@history_1082_li @history_1087_li
The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024. The default value DEFAULT_MAX_LENGTH_INPLACE_LOB has been changed from 128 to 1024.
@history_1083_li @history_1088_li
A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details. A server that implements the PostgreSQL protocol is now included and documented. That means, the PostgreSQL ODBC driver can be used to access a H2 database. See in the documentation for details.
@history_1084_li @history_1089_li
The experimental H2 ODBC driver has been removed. The experimental H2 ODBC driver has been removed.
@history_1085_li @history_1090_li
The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000. The default value for h2.defaultMaxMemoryUndo is now 50000. This avoids out of memory problems when using large transactions, however large transactions are slower because they are buffered to disk. To disable, use -Dh2.defaultMaxMemoryUndo=2000000000.
@history_1086_li @history_1091_li
Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used. Support for regular expression function REGEXP_REPLACE(expression, regex, replacement) and regular expression LIKE: expression REGEXP matchExpression. However, indexes are not yet used.
@history_1087_li @history_1092_li
The old view implementation has been removed. The old view implementation has been removed.
@history_1088_li @history_1093_li
The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used. The SysTray tool has been removed, because JDK 1.6 has native support for system tray icons. Use the Console tool (org.h2.tools.Console) automatically installs a system tray icon if JDK 1.6 is used.
@history_1089_li @history_1094_li
H2 Console: In the last release, the shutdown button did not work. Fixed. H2 Console: In the last release, the shutdown button did not work. Fixed.
@history_1090_li @history_1095_li
Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE. Referential integrity can now be disabled using SET REFERENTIAL_INTEGRITY FALSE. It can also be disable only for one table using ALTER TABLE SET REFERENTIAL_INTEGRITY FALSE.
@history_1091_li @history_1096_li
The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed. The Backup and Restore tools, and the BACKUP command did not back up LOBs when h2.lobFilesInDirectories was enabled. Fixed.
@history_1092_li @history_1097_li
Calculation of cache memory usage has been improved. Calculation of cache memory usage has been improved.
@history_1093_li @history_1098_li
In some situations record were released too late from the cache. Fixed. In some situations record were released too late from the cache. Fixed.
@history_1094_li @history_1099_li
The cache size is now measured in KB instead of blocks of 128 byte. The cache size is now measured in KB instead of blocks of 128 byte.
@history_1095_li @history_1100_li
CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables. CREATE TABLE ... AS SELECT now needs less memory. While inserting the rows, the undo log is temporarily disabled. This avoid out of memory problems when creating large tables.
@history_1096_li @history_1101_li
The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update. The per session undo log can now be disabled. This setting is useful for bulk operations that don't need to be atomic, like bulk delete or update.
@history_1097_li @history_1102_li
The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row. The database file could get corrupted when there was an OutOfMemoryException in the middle of inserting a row.
@history_1098_li @history_1103_li
Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot. Optimization for WHERE NOT(...) and WHERE [NOT] booleanFlagColumn. This can be disabled using the system property h2.optimizeNot.
@history_1099_li @history_1104_li
Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals. Optimization for conditions like WHERE A=B AND B=X (A=X is added). This often appears in joins. This can be disabled using the system property h2.optimizeTwoEquals.
@history_1100_li @history_1105_li
Documentation: the source code in 'Compacting a Database' was incorrect. Fixed. Documentation: the source code in 'Compacting a Database' was incorrect. Fixed.
@history_1101_li @history_1106_li
In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT. In the H2 Console, result sets could not be modified because the default result set type is now forward only. For H2, now uses scrollable result sets. Also for other databases, but only when the query starts with @EDIT.
@history_1102_li @history_1107_li
Views using UNION did not work correctly. Fixed. Views using UNION did not work correctly. Fixed.
@history_1103_li @history_1108_li
Function tables did not work with views and EXPLAIN. Fixed. Function tables did not work with views and EXPLAIN. Fixed.
@history_1104_h3 @history_1109_h3
Version 1.0.55 (2007-07-12) Version 1.0.55 (2007-07-12)
@history_1105_li @history_1110_li
Support for the system property baseDir. This works for embedded databases as well. The setting is supported by the H2 Console using -Dh2.baseDir or -baseDir Support for the system property baseDir. This works for embedded databases as well. The setting is supported by the H2 Console using -Dh2.baseDir or -baseDir
@history_1106_li @history_1111_li
LIKE ESCAPE did not work correctly if the pattern was % or _, followed by an escape character, followed by %. Fixed. LIKE ESCAPE did not work correctly if the pattern was % or _, followed by an escape character, followed by %. Fixed.
@history_1107_li @history_1112_li
PostgreSQL compatibility: SET SEARCH_PATH, SERIAL, CURRENT_USER, E'text', $1. PostgreSQL compatibility: SET SEARCH_PATH, SERIAL, CURRENT_USER, E'text', $1.
@history_1108_li @history_1113_li
In some situations, when many tables with LOB columns were modified (ALTER TABLE), large objects were deleted. Fixed. In some situations, when many tables with LOB columns were modified (ALTER TABLE), large objects were deleted. Fixed.
@history_1109_li @history_1114_li
CREATE TABLE AS SELECT .. UNION .. did not work. Fixed. CREATE TABLE AS SELECT .. UNION .. did not work. Fixed.
@history_1110_li @history_1115_li
New column ID for INFORMATION_SCHEMA.INDEXES, SEQUENCES, USERS, ROLES, RIGHTS, FUNCTION_ALIASES, SCHEMATA, VIEWS, CONSTRAINTS, CONSTANTS, DOMAINS, TRIGGERS. New column ID for INFORMATION_SCHEMA.INDEXES, SEQUENCES, USERS, ROLES, RIGHTS, FUNCTION_ALIASES, SCHEMATA, VIEWS, CONSTRAINTS, CONSTANTS, DOMAINS, TRIGGERS.
@history_1111_li @history_1116_li
If large result sets (backed by a temporary file) where not closed, the file was not deleted. Now, the default result set type is FETCH_FORWARD. This means temp files are deleted automatically (without having to close the result set explicitly). But it also means ResultSet.beforeFirst can only be called for scrollable result sets. To create a scrollable result set, use Statement stat = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY). If large result sets (backed by a temporary file) where not closed, the file was not deleted. Now, the default result set type is FETCH_FORWARD. This means temp files are deleted automatically (without having to close the result set explicitly). But it also means ResultSet.beforeFirst can only be called for scrollable result sets. To create a scrollable result set, use Statement stat = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY).
@history_1112_li @history_1117_li
PreparedStatement.getMetaData is now implemented. PreparedStatement.getMetaData is now implemented.
@history_1113_li @history_1118_li
Now PreparedStatement.setBigDecimal(..) can be called with an object of a derived class if the system property h2.allowBigDecimalExtensions is set to true. Now PreparedStatement.setBigDecimal(..) can be called with an object of a derived class if the system property h2.allowBigDecimalExtensions is set to true.
@history_1114_li @history_1119_li
The default database name in the documentation is now jdbc:h2:~/test. Like this, the database is stored in the user home directory (system property user.home). Of course storing the database in the current working directory (as in jdbc:h2:test) still works. Using the user directory avoids the problem that the database is not found if the application runs in another directory than the console. The default database name in the documentation is now jdbc:h2:~/test. Like this, the database is stored in the user home directory (system property user.home). Of course storing the database in the current working directory (as in jdbc:h2:test) still works. Using the user directory avoids the problem that the database is not found if the application runs in another directory than the console.
@history_1115_li @history_1120_li
The SQL statement SET ASSERT has been deprecated, because Constants.CHECK is now final. To disable assertions (and improve performance), the system property h2.check can be used. Executing SET ASSERT still works, but has no effect. The SQL statement SET ASSERT has been deprecated, because Constants.CHECK is now final. To disable assertions (and improve performance), the system property h2.check can be used. Executing SET ASSERT still works, but has no effect.
@history_1116_li @history_1121_li
In the READ_COMMITTED mode, when the multi-threaded kernel is enabled, read locks are now acquired but released immediately after a query. In the READ_COMMITTED mode, when the multi-threaded kernel is enabled, read locks are now acquired but released immediately after a query.
@history_1117_li @history_1122_li
The default trace level for JdbcDataSourceFactory was DEBUG, so when using data sources a trace file was always created. Now the default trace level is ERROR, and the file is only created if necessary. The default trace level for JdbcDataSourceFactory was DEBUG, so when using data sources a trace file was always created. Now the default trace level is ERROR, and the file is only created if necessary.
@history_1118_li @history_1123_li
PooledConnection.getConnection took a long time if only one connection was open at any time. Fixed. PooledConnection.getConnection took a long time if only one connection was open at any time. Fixed.
@history_1119_li @history_1124_li
Referential integrity violation: Two different SQL states are now used for missing parent / existing child. Referential integrity violation: Two different SQL states are now used for missing parent / existing child.
@history_1120_li @history_1125_li
DatabaseEventListener.exceptionThrown has a new parameter: SQL DatabaseEventListener.exceptionThrown has a new parameter: SQL
@history_1121_li @history_1126_li
For compatibility reasons, the catalog name can now be used in queries: SELECT * FROM TESTDB.PUBLIC.TEST For compatibility reasons, the catalog name can now be used in queries: SELECT * FROM TESTDB.PUBLIC.TEST
@history_1122_li @history_1127_li
If SHUTDOWN IMMEDIATELY was called, then the connection was not closed and the database opened from somebody else at the same time, in some cases this could result in errors with LOB files. Fixed. If SHUTDOWN IMMEDIATELY was called, then the connection was not closed and the database opened from somebody else at the same time, in some cases this could result in errors with LOB files. Fixed.
@history_1123_li @history_1128_li
The new view implementation is now enabled by default. To use the old implementation, set the system property 'h2.indexOld' to true (java -Dh2.indexOld=true ..., or in source code Constants.INDEX_OLD = true). If no problems are found, the old implementation will be removed in the next release. The old implementation does not work with multi-level nested temporary views (select * from (select * from (select * from test))). The new view implementation is now enabled by default. To use the old implementation, set the system property 'h2.indexOld' to true (java -Dh2.indexOld=true ..., or in source code Constants.INDEX_OLD = true). If no problems are found, the old implementation will be removed in the next release. The old implementation does not work with multi-level nested temporary views (select * from (select * from (select * from test))).
@history_1124_li @history_1129_li
The new view implementation did not work with < and <= comparison, and did not allow conditions on aggregates or grouped columns (HAVING). Fixed.. Fixed. The new view implementation did not work with < and <= comparison, and did not allow conditions on aggregates or grouped columns (HAVING). Fixed.. Fixed.
@history_1125_li @history_1130_li
Both view implementations did not work with multiple levels of nested temporary views (FROM (SELECT...)). Fixed. Both view implementations did not work with multiple levels of nested temporary views (FROM (SELECT...)). Fixed.
@history_1126_li @history_1131_li
The H2 Console can now be run as a standalone web application, or it can be embedded as a servlet into any existing web application. To build the 'H2 Console' web application, execute 'ant warConsole'. See src/tools/org/h2/server/web and src/tools/WEB-INF for details. This web application has been tested with Tomcat and Jetty. The H2 Console can now be run as a standalone web application, or it can be embedded as a servlet into any existing web application. To build the 'H2 Console' web application, execute 'ant warConsole'. See src/tools/org/h2/server/web and src/tools/WEB-INF for details. This web application has been tested with Tomcat and Jetty.
@history_1127_li @history_1132_li
Deleting database files didn't work for Windows if the database was on the root directory of a drive. Deleting database files didn't work for Windows if the database was on the root directory of a drive.
@history_1128_li @history_1133_li
The Polish translation is available. Thanks a lot to Tomek! The Polish translation is available. Thanks a lot to Tomek!
@history_1129_li @history_1134_li
Windows service: the CLASSPATH was not included when starting the service. Fixed. Windows service: the CLASSPATH was not included when starting the service. Fixed.
@history_1130_h3 @history_1135_h3
Version 1.0.50 (2007-06-17) Version 1.0.50 (2007-06-17)
@history_1131_li @history_1136_li
File names starting with ~ are now in the user directory (Java system property user.home) File names starting with ~ are now in the user directory (Java system property user.home)
@history_1132_li @history_1137_li
New Console starter application uses the JDK 1.6 system tray functionality if available, or a simple AWT frame for other platforms. To try it out, execute java org.h2.tools.Console. Feedback is welcome. This console starter application is not the default yet, but the plan is to remove the SysTray tool in the future. New Console starter application uses the JDK 1.6 system tray functionality if available, or a simple AWT frame for other platforms. To try it out, execute java org.h2.tools.Console. Feedback is welcome. This console starter application is not the default yet, but the plan is to remove the SysTray tool in the future.
@history_1133_li @history_1138_li
New method Csv.write(Writer writer, ResultSet rs) New method Csv.write(Writer writer, ResultSet rs)
@history_1134_li @history_1139_li
If a Reader or InputStream of a LOB is not closed, the LOB can not be deleted (embedded mode only). The exception is typically 'Error while renaming file'). As a workaround, set the system property 'h2.lobCloseBetweenReads' to true to close the LOB files between read operations. However this slows down reading. If a Reader or InputStream of a LOB is not closed, the LOB can not be deleted (embedded mode only). The exception is typically 'Error while renaming file'). As a workaround, set the system property 'h2.lobCloseBetweenReads' to true to close the LOB files between read operations. However this slows down reading.
@history_1135_li @history_1140_li
Server mode: the server stack trace was included in SQLException messages. Fixed. Server mode: the server stack trace was included in SQLException messages. Fixed.
@history_1136_li @history_1141_li
Views support has been partially re-implemented. Views are up to 6 times faster. Compared to regular queries, only 20% overhead. Because this is a bigger change, it is not enabled by default. To enable it, set the system property 'h2.indexNew' to true (java -Dh2.indexNew=true ..., or in source code Constants.INDEX_NEW = true). If no problems are found, this will be enabled by default in the next release. Views support has been partially re-implemented. Views are up to 6 times faster. Compared to regular queries, only 20% overhead. Because this is a bigger change, it is not enabled by default. To enable it, set the system property 'h2.indexNew' to true (java -Dh2.indexNew=true ..., or in source code Constants.INDEX_NEW = true). If no problems are found, this will be enabled by default in the next release.
@history_1137_li @history_1142_li
In INSERT and MERGE statements, each column may only be specified once now. In INSERT and MERGE statements, each column may only be specified once now.
@history_1138_li @history_1143_li
For most IOExceptions now the file name is included in the error message. For most IOExceptions now the file name is included in the error message.
@history_1139_li @history_1144_li
A java.util.Date object is now converted to a TIMESTAMP in the JDBC API. Previously it was converted to a DATE. A java.util.Date object is now converted to a TIMESTAMP in the JDBC API. Previously it was converted to a DATE.
@history_1140_li @history_1145_li
After calling SHUTDOWN and closing the connection and a superfluous error message appeared in the trace file. Fixed. After calling SHUTDOWN and closing the connection and a superfluous error message appeared in the trace file. Fixed.
@history_1141_li @history_1146_li
In many situations, views did not use an index if they could have. Fixed. Also the explain plan for views works now. In many situations, views did not use an index if they could have. Fixed. Also the explain plan for views works now.
@history_1142_li @history_1147_li
The table id (important for LOB files) is now included in INFORMATION_SCHEMA.TABLES. The table id (important for LOB files) is now included in INFORMATION_SCHEMA.TABLES.
@history_1143_li @history_1148_li
When using DISTINCT, ORDER BY a function works now as long as it is in the column list. When using DISTINCT, ORDER BY a function works now as long as it is in the column list.
@history_1144_li @history_1149_li
Support for the data type CHAR. The difference to VARCHAR is: trailing spaces are ignored. This data type is supported for compatibility with other databases and older applications. Support for the data type CHAR. The difference to VARCHAR is: trailing spaces are ignored. This data type is supported for compatibility with other databases and older applications.
@history_1145_li @history_1150_li
The aggregate function COUNT(...) now returns a long instead of an int. The aggregate function COUNT(...) now returns a long instead of an int.
@history_1146_li @history_1151_li
The 'ordering' of data types was not always correct, for example an operation involving REAL and DOUBLE produced a result of type REAL. Fixed. The 'ordering' of data types was not always correct, for example an operation involving REAL and DOUBLE produced a result of type REAL. Fixed.
@history_1147_li @history_1152_li
CSV tool: If the same instance was used for reading and writing, the tool wrote the column names twice. Fixed. CSV tool: If the same instance was used for reading and writing, the tool wrote the column names twice. Fixed.
@history_1148_li @history_1153_li
Compatibility: Support for the data type notation CHARACTER VARYING. Compatibility: Support for the data type notation CHARACTER VARYING.
@history_1149_li @history_1154_li
Can now ORDER BY -1 (meaning order by first column, descending), and ORDER BY ? (parameterized column number). Can now ORDER BY -1 (meaning order by first column, descending), and ORDER BY ? (parameterized column number).
@history_1150_li @history_1155_li
Databases with invalid linked tables (for example, because the target database is not accessible) can now be opened. Old table links don't work however. Databases with invalid linked tables (for example, because the target database is not accessible) can now be opened. Old table links don't work however.
@history_1151_li @history_1156_li
There was a small memory leak in the trace module. One object per opened connection was kept in a hash map. There was a small memory leak in the trace module. One object per opened connection was kept in a hash map.
@history_1152_li @history_1157_li
Linked tables can now emit UPDATE statements if 'EMIT UPDATES' is specified in the CREATE LINKED TABLE statement. So far, updating a row always deleted the old row and then inserted the new row. Linked tables can now emit UPDATE statements if 'EMIT UPDATES' is specified in the CREATE LINKED TABLE statement. So far, updating a row always deleted the old row and then inserted the new row.
@history_1153_li @history_1158_li
In the last release, the H2 Console opened two connection when logging into a database, and only closed one connection when logging out. Fixed. In the last release, the H2 Console opened two connection when logging into a database, and only closed one connection when logging out. Fixed.
@history_1154_li @history_1159_li
New functions LEAST and GREATEST to get the smallest or largest value from a list. New functions LEAST and GREATEST to get the smallest or largest value from a list.
@history_1155_h3 @history_1160_h3
Version 1.0.46 (2007-04-29) Version 1.0.46 (2007-04-29)
@history_1156_li @history_1161_li
Unnamed private in-memory database (jdbc:h2:mem:) were not 'private' as documented. Fixed. Unnamed private in-memory database (jdbc:h2:mem:) were not 'private' as documented. Fixed.
@history_1157_li @history_1162_li
Autocomplete in the Console application: now the result frame scrolls to the top when the list is updated. Autocomplete in the Console application: now the result frame scrolls to the top when the list is updated.
@history_1158_li @history_1163_li
GROUP BY expressions did not work correctly in subqueries. Fixed. GROUP BY expressions did not work correctly in subqueries. Fixed.
@history_1159_li @history_1164_li
New function TABLE to define ad-hoc (temporary) tables in a query. This also solves problems with variable-size IN(...) queries: instead of SELECT * FROM TEST WHERE ID IN(?, ?, ...) you can now write: SELECT * FROM TABLE(ID INT=?) X, TEST WHERE X.ID=TEST.ID In this case, the index is used. New function TABLE to define ad-hoc (temporary) tables in a query. This also solves problems with variable-size IN(...) queries: instead of SELECT * FROM TEST WHERE ID IN(?, ?, ...) you can now write: SELECT * FROM TABLE(ID INT=?) X, TEST WHERE X.ID=TEST.ID In this case, the index is used.
@history_1160_li @history_1165_li
New data type ARRAY. Actually it was there before, but is now documented and better tested (however it must still be considered experimental). The java.sql.Array implementation is incomplete, but setObject(1, new Object[]{...}) and getObject(..) can be used. New functions ARRAY_GET and ARRAY_LENGTH. New data type ARRAY. Actually it was there before, but is now documented and better tested (however it must still be considered experimental). The java.sql.Array implementation is incomplete, but setObject(1, new Object[]{...}) and getObject(..) can be used. New functions ARRAY_GET and ARRAY_LENGTH.
@history_1161_li @history_1166_li
SimpleResultSet now has some basic data type conversion features. SimpleResultSet now has some basic data type conversion features.
@history_1162_li @history_1167_li
When using JDK 1.5 or later, and switching on h2.lobFilesInDirectories, the performance for creating LOBs was bad. This has been fixed, however creating lots of LOBs it is still faster when the setting is switched off. When using JDK 1.5 or later, and switching on h2.lobFilesInDirectories, the performance for creating LOBs was bad. This has been fixed, however creating lots of LOBs it is still faster when the setting is switched off.
@history_1163_li @history_1168_li
A problem with multiple unnamed dynamic tables (FROM (SELECT...)) has been fixed. A problem with multiple unnamed dynamic tables (FROM (SELECT...)) has been fixed.
@history_1164_li @history_1169_li
Appending 'Z' to a timestamp did not have an effect. Now it is interpreted as +00:00 (GMT). Appending 'Z' to a timestamp did not have an effect. Now it is interpreted as +00:00 (GMT).
@history_1165_li @history_1170_li
The BACKUP command is better tested and documented. This means hot backup (online backup) is now possible. The BACKUP command is better tested and documented. This means hot backup (online backup) is now possible.
@history_1166_li @history_1171_li
The old 'Backup' tool is now called 'Script' (as the SQL statement). The old 'Backup' tool is now called 'Script' (as the SQL statement).
@history_1167_li @history_1172_li
There are new 'Backup' and 'Restore' tools that work with database files directly. There are new 'Backup' and 'Restore' tools that work with database files directly.
@history_1168_li @history_1173_li
The complete syntax for referential and check constraints is now supported when written as part of the column definition, behind PRIMARY KEY. The complete syntax for referential and check constraints is now supported when written as part of the column definition, behind PRIMARY KEY.
@history_1169_li @history_1174_li
CASE WHEN ... returned the wrong result when the condition evaluated to NULL. CASE WHEN ... returned the wrong result when the condition evaluated to NULL.
@history_1170_li @history_1175_li
The new function LINK_SCHEMA simplifies linking all tables of a schema. The new function LINK_SCHEMA simplifies linking all tables of a schema.
@history_1171_li @history_1176_li
SCRIPT DROP now also drops aliases (Java functions) if they exist. SCRIPT DROP now also drops aliases (Java functions) if they exist.
@history_1172_li @history_1177_li
For encrypted databases, the trace option can no longer be enabled manually by creating a file. For encrypted databases, the trace option can no longer be enabled manually by creating a file.
@history_1173_li @history_1178_li
For linked tables, NULL in the unique key is now supported. For linked tables, NULL in the unique key is now supported.
@history_1174_li @history_1179_li
For read-only databases, temp files are now created in the default temp directory instead of the database directory. For read-only databases, temp files are now created in the default temp directory instead of the database directory.
@history_1175_li @history_1180_li
Sending CLOB data was slow in some systems when using the server version. Fixed. Sending CLOB data was slow in some systems when using the server version. Fixed.
@history_1176_li @history_1181_li
CSVWRITE now returns the number of rows written. CSVWRITE now returns the number of rows written.
@history_1177_li @history_1182_li
The data type of NULLIF was NULL if the first expression was a column. Now the data type is set correctly. The data type of NULLIF was NULL if the first expression was a column. Now the data type is set correctly.
@history_1178_li @history_1183_li
Indexes (and other related objects) for local temporary tables where not dropped when the session was closed. Fixed. Indexes (and other related objects) for local temporary tables where not dropped when the session was closed. Fixed.
@history_1179_li @history_1184_li
ALTER TABLE did not work for tables with computed columns. ALTER TABLE did not work for tables with computed columns.
@history_1180_li @history_1185_li
SQLException.getCause of the now works for JDK 1.4 and higher. SQLException.getCause of the now works for JDK 1.4 and higher.
@history_1181_li @history_1186_li
If the index file was deleted, an error was logged in the .trace.db file. This is no longer done. If the index file was deleted, an error was logged in the .trace.db file. This is no longer done.
@history_1182_li @history_1187_li
The Portuguese (Europe) translation is available. Thanks a lot to Antonio Casqueiro! The Portuguese (Europe) translation is available. Thanks a lot to Antonio Casqueiro!
@history_1183_li @history_1188_li
The error message for invalid views has been improved (the root cause is included in the message now). The error message for invalid views has been improved (the root cause is included in the message now).
@history_1184_li @history_1189_li
IN(SELECT ...) was not working correctly if the subquery returned a NULL value. Fixed. IN(SELECT ...) was not working correctly if the subquery returned a NULL value. Fixed.
@history_1185_li @history_1190_li
DROP ALL OBJECTS did not drop constants. DROP ALL OBJECTS did not drop constants.
@history_1186_li @history_1191_li
DROP ALL OBJECTS dropped the role PUBLIC, which was wrong. Fixed. DROP ALL OBJECTS dropped the role PUBLIC, which was wrong. Fixed.
@history_1187_li @history_1192_li
CASE was parsed as a function if the expression was in (). Fixed. CASE was parsed as a function if the expression was in (). Fixed.
@history_1188_li @history_1193_li
When ORDER BY was used together with DISTINCT, it was required to type the column name exactly in the select list and the order list exactly in the same way. This is not required any longer. When ORDER BY was used together with DISTINCT, it was required to type the column name exactly in the select list and the order list exactly in the same way. This is not required any longer.
@history_1189_h3 @history_1194_h3
Version 1.0.44 (2007-03-04) Version 1.0.44 (2007-03-04)
@history_1190_li @history_1195_li
System sequences (automatically created sequences for IDENTITY or AUTO_INCREMENT columns) are now random (UUIDs) to avoid clashes when merging databases using RUNSCRIPT. System sequences (automatically created sequences for IDENTITY or AUTO_INCREMENT columns) are now random (UUIDs) to avoid clashes when merging databases using RUNSCRIPT.
@history_1191_li @history_1196_li
The precision for linked tables was not correct for some data types, for example VARCHAR. Fixed. The precision for linked tables was not correct for some data types, for example VARCHAR. Fixed.
@history_1192_li @history_1197_li
Many problems and bugs in the XA support (package javax.sql) have been fixed. Many problems and bugs in the XA support (package javax.sql) have been fixed.
@history_1193_li @history_1198_li
Now the server tool (org.h2.tools.Server) terminates with an exit code if a problem occured. Now the server tool (org.h2.tools.Server) terminates with an exit code if a problem occured.
@history_1194_li @history_1199_li
The JDBC driver is now loaded if the JdbcDataSource class is loaded. The JDBC driver is now loaded if the JdbcDataSource class is loaded.
@history_1195_li @history_1200_li
After renaming a user the password becomes invalid. This is now documented. After renaming a user the password becomes invalid. This is now documented.
@history_1196_li @history_1201_li
XAResource.recover didn't work. Fixed. XAResource.recover didn't work. Fixed.
@history_1197_li @history_1202_li
XAResource.recover did throw an exception with the code XAER_OUTSIDE if there was no connection. Now the code is XAER_RMERR. XAResource.recover did throw an exception with the code XAER_OUTSIDE if there was no connection. Now the code is XAER_RMERR.
@history_1198_li @history_1203_li
SCRIPT did not work correctly with BLOB or CLOB data. Fixed. SCRIPT did not work correctly with BLOB or CLOB data. Fixed.
@history_1199_li @history_1204_li
BACKUP TO 'test.zip' now works with encrypted databases and CLOB and BLOB data. BACKUP TO 'test.zip' now works with encrypted databases and CLOB and BLOB data.
@history_1200_li @history_1205_li
The function CASE WHEN ... didn't convert the returned value to the same data type, resulting in unexpected behavior in many cases. Fixed. The function CASE WHEN ... didn't convert the returned value to the same data type, resulting in unexpected behavior in many cases. Fixed.
@history_1201_li @history_1206_li
Truncating a table is now allowed if the table references another table (but still not allowed if the table is references by another table). Truncating a table is now allowed if the table references another table (but still not allowed if the table is references by another table).
@history_1202_li @history_1207_li
ORDER BY picked the wrong column if the same column name (but with a different table name) was used twice in the select list. ORDER BY picked the wrong column if the same column name (but with a different table name) was used twice in the select list.
@history_1203_li @history_1208_li
When a subquery was used in the select list of a query, and GROUP BY was used at the same time, a NullPointerException could occur. Fixed. When a subquery was used in the select list of a query, and GROUP BY was used at the same time, a NullPointerException could occur. Fixed.
@history_1204_li @history_1209_li
ORDER BY did not work when DISTINCT was used at the same time in some situations. Fixed. ORDER BY did not work when DISTINCT was used at the same time in some situations. Fixed.
@history_1205_li @history_1210_li
When using IN(...) on a case insensitive column (VARCHAR_IGNORECASE), an incorrect optimization was made and the result was wrong sometimes. When using IN(...) on a case insensitive column (VARCHAR_IGNORECASE), an incorrect optimization was made and the result was wrong sometimes.
@history_1206_h3 @history_1211_h3
Version 1.0.41 (2007-01-30) Version 1.0.41 (2007-01-30)
@history_1207_li @history_1212_li
Experimental online backup feature using the SQL statement BACKUP TO 'fileName'. This creates a backup in the form of a zip file. Unlike the SCRIPT TO command, the data tables are not locked. Experimental online backup feature using the SQL statement BACKUP TO 'fileName'. This creates a backup in the form of a zip file. Unlike the SCRIPT TO command, the data tables are not locked.
@history_1208_li @history_1213_li
When using the server mode, temporary files for large LOB values are now deleted when the result set is closed. This also means that LOBs become unavailable after closing the result, however this is according to the specs. When using the server mode, temporary files for large LOB values are now deleted when the result set is closed. This also means that LOBs become unavailable after closing the result, however this is according to the specs.
@history_1209_li @history_1214_li
It was possible that SUM throws a class cast exception if the parameter was a conditional expression. It was possible that SUM throws a class cast exception if the parameter was a conditional expression.
@history_1210_li @history_1215_li
Benchmark: Added a multi-client test case, BenchB (similar to TPC-B). Benchmark: Added a multi-client test case, BenchB (similar to TPC-B).
@history_1211_li @history_1216_li
Compatibility: SCHEMA_NAME.SEQUENCE_NAME.NEXTVAL now works as expected. Compatibility: SCHEMA_NAME.SEQUENCE_NAME.NEXTVAL now works as expected.
@history_1212_li @history_1217_li
The Console is now translated to Hungarian thanks to Andras Hideg, and to Indonesian thanks to Joko Yuliantoro The Console is now translated to Hungarian thanks to Andras Hideg, and to Indonesian thanks to Joko Yuliantoro
@history_1213_li @history_1218_li
XAConnection: A NullPointerException was thrown if addConnectionEventListener was called before opening the connection. XAConnection: A NullPointerException was thrown if addConnectionEventListener was called before opening the connection.
@history_1214_li @history_1219_li
In case the result set of a subquery was re-used, an exception was throws if the subquery result did not fit in memory. Now the result is not re-used in this case. Generally, large subqueries should be avoided for performance reasons. In case the result set of a subquery was re-used, an exception was throws if the subquery result did not fit in memory. Now the result is not re-used in this case. Generally, large subqueries should be avoided for performance reasons.
@history_1215_li @history_1220_li
The command "drop all objects delete files" did not work on linux if the database name was lower case. The command "drop all objects delete files" did not work on linux if the database name was lower case.
@history_1216_li @history_1221_li
When setting the URL to an empty string the DataSource now throws an better exception. When setting the URL to an empty string the DataSource now throws an better exception.
@history_1217_li @history_1222_li
Parsing of LIKE .. ESCAPE did not stop at the expected point. Fixed. Parsing of LIKE .. ESCAPE did not stop at the expected point. Fixed.
@history_1218_li @history_1223_li
Can now use UUID columns as generated key values. However, the UUID column must be the primary key. Can now use UUID columns as generated key values. However, the UUID column must be the primary key.
@history_1219_li @history_1224_li
Improved the Javadoc documentation. Now unsupported features are marked with [Not supported], and partially supported features are [Partially supported]. Improved the Javadoc documentation. Now unsupported features are marked with [Not supported], and partially supported features are [Partially supported].
@history_1220_li @history_1225_li
The forum subscriptions (the emails sent from the forum) now works. The forum subscriptions (the emails sent from the forum) now works.
@history_1221_h3 @history_1226_h3
Version 1.0.40 (2007-01-17) Version 1.0.40 (2007-01-17)
@history_1222_li @history_1227_li
Setting the collation (SET COLLATOR) was very slow on some systems (up to 24 seconds). Thanks a lot to Martina Nissler for finding this problem! Setting the collation (SET COLLATOR) was very slow on some systems (up to 24 seconds). Thanks a lot to Martina Nissler for finding this problem!
@history_1223_li @history_1228_li
The Console is now translated to Japanese thanks to IKEMOTO, Masahiro (ikeyan (at) arizona (dot) ne (dot) jp) The Console is now translated to Japanese thanks to IKEMOTO, Masahiro (ikeyan (at) arizona (dot) ne (dot) jp)
@history_1224_li @history_1229_li
The database engine can now be compiled with JDK 1.3 using ant codeswitch. There are still some limitations, and the ant script to build the jar does not work yet. The database engine can now be compiled with JDK 1.3 using ant codeswitch. There are still some limitations, and the ant script to build the jar does not work yet.
@history_1225_li @history_1230_li
Fixed a problem where data in the log file was not written to the data file (recovery failure) after a crash, if an index was deleted previously. Fixed a problem where data in the log file was not written to the data file (recovery failure) after a crash, if an index was deleted previously.
@history_1226_li @history_1231_li
SCRIPT NODATA now writes the row count for each table (this simplifies comparing databases). SCRIPT NODATA now writes the row count for each table (this simplifies comparing databases).
@history_1227_li @history_1232_li
Selecting a column using the syntax schemaName.tableName.columnName did not work in all cases. Selecting a column using the syntax schemaName.tableName.columnName did not work in all cases.
@history_1228_li @history_1233_li
Can now parse timestamps with timezone information (Z or +/-hh:mm) and dates before year 1. However dates before year 1 are not formatted correctly (this is a Java problem). Can now parse timestamps with timezone information (Z or +/-hh:mm) and dates before year 1. However dates before year 1 are not formatted correctly (this is a Java problem).
@history_1229_li @history_1234_li
When stopping the TCP server from an application and immediately afterwards staring it again using a different TCP password, an exception was thrown sometimes. When stopping the TCP server from an application and immediately afterwards staring it again using a different TCP password, an exception was thrown sometimes.
@history_1230_li @history_1235_li
Now PreparedStatement.setBigDecimal(..) can only be called with an object of type java.math.BigDecimal. Derived classes are not allowed any more. Many thanks to Maciej Wegorkiewicz for finding this problem. Now PreparedStatement.setBigDecimal(..) can only be called with an object of type java.math.BigDecimal. Derived classes are not allowed any more. Many thanks to Maciej Wegorkiewicz for finding this problem.
@history_1231_li @history_1236_li
It was possible to manipulate values in the byte array after calling PreparedStatement.setBytes, and this could lead to problems if the same byte array was used again. Now the byte array is copied if required. It was possible to manipulate values in the byte array after calling PreparedStatement.setBytes, and this could lead to problems if the same byte array was used again. Now the byte array is copied if required.
@history_1232_li @history_1237_li
Date, time and timestamp objects were cloned in cases where it was not required. Fixed. Date, time and timestamp objects were cloned in cases where it was not required. Fixed.
@history_1233_h3 @history_1238_h3
Version 1.0.36 (2007-01-02) Version 1.0.36 (2007-01-02)
@history_1234_li @history_1239_li
It was possible to drop the sequence of a temporary tables with DROP ALL OBJECTS, resulting in a null pointer exception afterwards. It was possible to drop the sequence of a temporary tables with DROP ALL OBJECTS, resulting in a null pointer exception afterwards.
@history_1235_li @history_1240_li
Prepared statements with non-constant functions such as CURRENT_TIMESTAMP() did not get re-evaluated if the result of the function changed. Fixed. Prepared statements with non-constant functions such as CURRENT_TIMESTAMP() did not get re-evaluated if the result of the function changed. Fixed.
@history_1236_li @history_1241_li
The (relative or absolute) directory where the script files are stored or read can now be changed using the system property h2.scriptDirectory The (relative or absolute) directory where the script files are stored or read can now be changed using the system property h2.scriptDirectory
@history_1237_li @history_1242_li
Client trace files now created in the directory 'trace.db' and no longer the application directory. This can be changed using the system property h2.clientTraceDirectory. Client trace files now created in the directory 'trace.db' and no longer the application directory. This can be changed using the system property h2.clientTraceDirectory.
@history_1238_li @history_1243_li
In some situations the log file got corrupt if the process was terminated while the database was opening. In some situations the log file got corrupt if the process was terminated while the database was opening.
@history_1239_li @history_1244_li
Using ;RECOVER=1 in the database URL threw a syntax exception. Fixed. Using ;RECOVER=1 in the database URL threw a syntax exception. Fixed.
@history_1240_li @history_1245_li
If a CLOB or BLOB was deleted in a transaction and the database crashed before the transaction was committed or rolled back, the object was lost if it was large. Fixed. If a CLOB or BLOB was deleted in a transaction and the database crashed before the transaction was committed or rolled back, the object was lost if it was large. Fixed.
@history_1241_li @history_1246_li
Now using ant-build.properties. The jdk is automatically updated when using ant codeswitch... Now using ant-build.properties. The jdk is automatically updated when using ant codeswitch...
@history_1242_li @history_1247_li
Cluster: Now the server can detect if a query is read-only, and in this case the result is only read from the first cluster node. However, there is currently no load balancing made to avoid problems with transactions / locking. Cluster: Now the server can detect if a query is read-only, and in this case the result is only read from the first cluster node. However, there is currently no load balancing made to avoid problems with transactions / locking.
@history_1243_li @history_1248_li
Many settings are now initialized from system properties and can be changed on the command line without having recompile the database. See Advances / Settings Read from System Properties. Many settings are now initialized from system properties and can be changed on the command line without having recompile the database. See Advances / Settings Read from System Properties.
@history_1244_li @history_1249_li
H2 is now available in Maven. The groupId is com.h2database, the artifactId h2 and the version 1.0.20061217. To create the maven artifacts yourself, use 'ant mavenUploadLocal' and 'ant mavenBuildCentral'. H2 is now available in Maven. The groupId is com.h2database, the artifactId h2 and the version 1.0.20061217. To create the maven artifacts yourself, use 'ant mavenUploadLocal' and 'ant mavenBuildCentral'.
@history_1245_h3 @history_1250_h3
Version 1.0.25 (2006-08-31) Version 1.0.25 (2006-08-31)
@history_1246_li @history_1251_li
In some situations, wide b-tree indexes (with large VARCHAR columns for example) could get corrupted. Fixed. In some situations, wide b-tree indexes (with large VARCHAR columns for example) could get corrupted. Fixed.
@history_1247_li @history_1252_li
ORDER BY was broken in the last release when using table aliases. Fixed. ORDER BY was broken in the last release when using table aliases. Fixed.
@history_1248_h3 @history_1253_h3
Version 0.9 (2005-12-13) Version 0.9 (2005-12-13)
@history_1249_li @history_1254_li
First public release. First public release.
@history_1250_h2 @history_1255_h2
Roadmap Roadmap
@history_1251_h3 @history_1256_h3
Highest Priority Highest Priority
@history_1252_li @history_1257_li
Improve test code coverage Improve test code coverage
@history_1253_li @history_1258_li
More fuzz tests More fuzz tests
@history_1254_li @history_1259_li
Test very large databases and LOBs (up to 256 GB) Test very large databases and LOBs (up to 256 GB)
@history_1255_li @history_1260_li
Test multi-threaded in-memory db access Test multi-threaded in-memory db access
@history_1256_h3 @history_1261_h3
In Version 1.1 In Version 1.1
@history_1257_li @history_1262_li
Add version number. Install directory: h2-1.0, jar file: h2-1.0.jar. Micro version: use build number, staring with 1.1.100 Add version number. Install directory: h2-1.0, jar file: h2-1.0.jar. Micro version: use build number, staring with 1.1.100
@history_1258_li @history_1263_li
Automatic upgrade if there is a file format change Automatic upgrade if there is a file format change
@history_1259_li @history_1264_li
ALTER TABLE on a table with a LOB could result in 'Cannot delete file' on some systems. Fixed. ALTER TABLE on a table with a LOB could result in 'Cannot delete file' on some systems. Fixed.
@history_1260_li @history_1265_li
Change Constants.DEFAULT_MAX_MEMORY_UNDO to 10000 (and change the docs). Test. Change Constants.DEFAULT_MAX_MEMORY_UNDO to 10000 (and change the docs). Test.
@history_1261_li @history_1266_li
Enable and document optimizations, LOB files in directories Enable and document optimizations, LOB files in directories
@history_1262_li @history_1267_li
Special methods for DataPage.writeByte / writeShort and so on Special methods for DataPage.writeByte / writeShort and so on
@history_1263_li @history_1268_li
Index organized tables CREATE TABLE...(...) ORGANIZATION INDEX (store in data file) (probably file format changes are required for rowId) Index organized tables CREATE TABLE...(...) ORGANIZATION INDEX (store in data file) (probably file format changes are required for rowId)
@history_1264_li @history_1269_li
Change the default for NULL || 'x' to NULL Change the default for NULL || 'x' to NULL
@history_1265_h3 @history_1270_h3
Priority 1 Priority 1
@history_1266_li @history_1271_li
MVCC (Multi Version Concurrency Control) MVCC (Multi Version Concurrency Control)
@history_1267_li @history_1272_li
Read-only databases inside a jar (splitting large files to speed up random access) Read-only databases inside a jar (splitting large files to speed up random access)
@history_1268_li @history_1273_li
RECOVER=1 should automatically recover, =2 should run the recovery tool if required RECOVER=1 should automatically recover, =2 should run the recovery tool if required
@history_1269_li @history_1274_li
More tests with MULTI_THREADED=1 More tests with MULTI_THREADED=1
@history_1270_li @history_1275_li
Improve performance for create table (if this is possible) Improve performance for create table (if this is possible)
@history_1271_li @history_1276_li
Test with Spatial DB in a box / JTS (http://docs.codehaus.org/display/GEOS/SpatialDBBox) Test with Spatial DB in a box / JTS (http://docs.codehaus.org/display/GEOS/SpatialDBBox)
@history_1272_li @history_1277_li
Document how to use H2 with PHP (generic database API) Document how to use H2 with PHP (generic database API)
@history_1273_li @history_1278_li
Optimization: result set caching (like MySQL) Optimization: result set caching (like MySQL)
@history_1274_li @history_1279_li
Server side cursors Server side cursors
@history_1275_li @history_1280_li
Row level locking Row level locking
@history_1276_li @history_1281_li
System table: open sessions and locks of a database System table: open sessions and locks of a database
@history_1277_li @history_1282_li
Function in management db: list open connections and databases of a (TCP) server Function in management db: list open connections and databases of a (TCP) server
@history_1278_li @history_1283_li
Fix right outer joins Fix right outer joins
@history_1279_li @history_1284_li
Full outer joins Full outer joins
@history_1280_li @history_1285_li
Long running queries / errors / trace system table Long running queries / errors / trace system table
@history_1281_li @history_1286_li
Migrate database tool (also from other database engines) Migrate database tool (also from other database engines)
@history_1282_li @history_1287_li
Shutdown compact Shutdown compact
@history_1283_li @history_1288_li
Optimization of distinct with index: select distinct name from test Optimization of distinct with index: select distinct name from test
@history_1284_li @history_1289_li
Document server mode, embedded mode, web app mode, dual mode (server+embedded) Document server mode, embedded mode, web app mode, dual mode (server+embedded)
@history_1285_li @history_1290_li
Stop the server: close all open databases first Stop the server: close all open databases first
@history_1286_li @history_1291_li
SET variable { TO | = } { value | 'value' | DEFAULT } SET variable { TO | = } { value | 'value' | DEFAULT }
@history_1287_li @history_1292_li
Running totals: select @running:=if(@previous=t.ID,@running,0)+t.NUM as TOTAL, @previous:=t.ID Running totals: select @running:=if(@previous=t.ID,@running,0)+t.NUM as TOTAL, @previous:=t.ID
@history_1288_li @history_1293_li
Better support large transactions, large updates / deletes: use less memory Better support large transactions, large updates / deletes: use less memory
@history_1289_li @history_1294_li
Better support large transactions, large updates / deletes: allow tables without primary key Better support large transactions, large updates / deletes: allow tables without primary key
@history_1290_li @history_1295_li
Support Oracle RPAD and LPAD(string, n[, pad]) (truncate the end if longer) Support Oracle RPAD and LPAD(string, n[, pad]) (truncate the end if longer)
@history_1291_li @history_1296_li
Allow editing NULL values in the Console User defined aggregate functions
@history_1292_li @history_1297_li
Updatable result sets: DatabaseMetaData.ownUpdatesAreVisible = true (for insert, delete, update) Simple solution: automatically calls 'refresh' when the result was changed. Compare with other databases. Procedural language / script language (Javascript)
@history_1293_h3 @history_1298_h3
Priority 2 Priority 2
@history_1294_li @history_1299_li
Support OSGi: http://oscar-osgi.sourceforge.net, http://incubator.apache.org/felix/index.html Updatable result sets: DatabaseMetaData.ownUpdatesAreVisible = true (for insert, delete, update) Simple solution: automatically calls 'refresh' when the result was changed. Compare with other databases.
@history_1295_li @history_1300_li
Procedural language / script language (Javascript) Allow editing NULL values in the Console
@history_1296_li @history_1301_li
Support OSGi: http://oscar-osgi.sourceforge.net, http://incubator.apache.org/felix/index.html
@history_1302_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) 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)
@history_1297_li @history_1303_li
Set the database in an 'exclusive' mode (restrict to one user at a time) Set the database in an 'exclusive' mode (restrict to one user at a time)
@history_1298_li @history_1304_li
Clustering: recovery needs to becomes fully automatic. Global write lock feature. Clustering: recovery needs to becomes fully automatic. Global write lock feature.
@history_1299_li @history_1305_li
Deferred integrity checking (DEFERRABLE INITIALLY DEFERRED) Deferred integrity checking (DEFERRABLE INITIALLY DEFERRED)
@history_1300_li @history_1306_li
Groovy Stored Procedures (http://groovy.codehaus.org/Groovy+SQL) Groovy Stored Procedures (http://groovy.codehaus.org/Groovy+SQL)
@history_1301_li @history_1307_li
System table / function: cache usage System table / function: cache usage
@history_1302_li @history_1308_li
User defined aggregate functions
@history_1303_li
Add a migration guide (list differences between databases) Add a migration guide (list differences between databases)
@history_1304_li @history_1309_li
Optimization: automatic index creation suggestion using the trace file? Optimization: automatic index creation suggestion using the trace file?
@history_1305_li @history_1310_li
Compression performance: don't allocate buffers, compress / expand in to out buffer Compression performance: don't allocate buffers, compress / expand in to out buffer
@history_1306_li @history_1311_li
Connection pool manager Connection pool manager
@history_1307_li @history_1312_li
Implement Statement.cancel for server connections Implement Statement.cancel for server connections
@history_1308_li @history_1313_li
Start / stop server with database URL Start / stop server with database URL
@history_1309_li @history_1314_li
Rebuild index functionality (other than delete the index file) Rebuild index functionality (other than delete the index file)
@history_1310_li @history_1315_li
Don't use deleteOnExit (bug 4513817: File.deleteOnExit consumes memory) Don't use deleteOnExit (bug 4513817: File.deleteOnExit consumes memory)
@history_1311_li @history_1316_li
Console: add accesskey to most important commands (A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA) Console: add accesskey to most important commands (A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA)
@history_1312_li @history_1317_li
Feature: a setting to delete the the log or not (for backup) Feature: a setting to delete the the log or not (for backup)
@history_1313_li @history_1318_li
Test with Sun ASPE1_4; JEE Sun AS PE1.4 Test with Sun ASPE1_4; JEE Sun AS PE1.4
@history_1314_li @history_1319_li
Test performance again with SQL Server, Oracle, DB2 Test performance again with SQL Server, Oracle, DB2
@history_1315_li @history_1320_li
Test with dbmonster (http://dbmonster.kernelpanic.pl/) Test with dbmonster (http://dbmonster.kernelpanic.pl/)
@history_1316_li @history_1321_li
Test with dbcopy (http://dbcopyplugin.sourceforge.net) Test with dbcopy (http://dbcopyplugin.sourceforge.net)
@history_1317_li @history_1322_li
Find a tool to view a text file >100 MB, with find, page up and down (like less) Find a tool to view a text file >100 MB, with find, page up and down (like less)
@history_1318_li @history_1323_li
Implement, test, document XAConnection and so on Implement, test, document XAConnection and so on
@history_1319_li @history_1324_li
Web site: meta keywords, description, get rid of frame set Web site: meta keywords, description, get rid of frame set
@history_1320_li @history_1325_li
Pluggable data type (for compression, validation, conversion, encryption) Pluggable data type (for compression, validation, conversion, encryption)
@history_1321_li @history_1326_li
CHECK: find out what makes CHECK=TRUE slow, move to CHECK2 CHECK: find out what makes CHECK=TRUE slow, move to CHECK2
@history_1322_li @history_1327_li
Improve recovery: improve code for log recovery problems (less try/catch) Improve recovery: improve code for log recovery problems (less try/catch)
@history_1323_li @history_1328_li
Log linear hash index changes, fast open / close Log linear hash index changes, fast open / close
@history_1324_li @history_1329_li
Index usage for (ID, NAME)=(1, 'Hi'); document Index usage for (ID, NAME)=(1, 'Hi'); document
@history_1325_li @history_1330_li
Suggestion: include jetty as Servlet Container (like LAMP) Suggestion: include jetty as Servlet Container (like LAMP)
@history_1326_li @history_1331_li
Trace shipping to server Trace shipping to server
@history_1327_li @history_1332_li
Performance / server mode: use UDP optionally? Performance / server mode: use UDP optionally?
@history_1328_li @history_1333_li
Version check: docs / web console (using javascript), and maybe in the library (using TCP/IP) Version check: docs / web console (using javascript), and maybe in the library (using TCP/IP)
@history_1329_li @history_1334_li
Aggregates: support MEDIAN Aggregates: support MEDIAN
@history_1330_li @history_1335_li
Web server classloader: override findResource / getResourceFrom Web server classloader: override findResource / getResourceFrom
@history_1331_li @history_1336_li
Cost for embedded temporary view is calculated wrong, if result is constant Cost for embedded temporary view is calculated wrong, if result is constant
@history_1332_li @history_1337_li
Comparison: pluggable sort order: natural sort Comparison: pluggable sort order: natural sort
@history_1333_li @history_1338_li
Count index range query (count(*) where id between 10 and 20) Count index range query (count(*) where id between 10 and 20)
@history_1334_li @history_1339_li
Eclipse plugin Eclipse plugin
@history_1335_li @history_1340_li
iReport to support H2 iReport to support H2
@history_1336_li @history_1341_li
Implement missing JDBC API (CallableStatement,...) Implement missing JDBC API (CallableStatement,...)
@history_1337_li @history_1342_li
Compression of the cache Compression of the cache
@history_1338_li @history_1343_li
Run H2 Console inside servlet (pass-through servlet of fix the JSP / app) Run H2 Console inside servlet (pass-through servlet of fix the JSP / app)
@history_1339_li @history_1344_li
Include SMPT (mail) server (at least client) (alert on cluster failure, low disk space,...) Include SMPT (mail) server (at least client) (alert on cluster failure, low disk space,...)
@history_1340_li @history_1345_li
Make the jar more modular Make the jar more modular
@history_1341_li @history_1346_li
Drop with restrict (currently cascade is the default) Drop with restrict (currently cascade is the default)
@history_1342_li @history_1347_li
JSON parser and functions JSON parser and functions
@history_1343_li @history_1348_li
Option for Java functions: constant/isDeterministic to allow early evaluation when all parameters are constant Option for Java functions: constant/isDeterministic to allow early evaluation when all parameters are constant
@history_1344_li @history_1349_li
Automatic collection of statistics (auto ANALYZE) Automatic collection of statistics (auto ANALYZE)
@history_1345_li @history_1350_li
Server: client ping from time to time (to avoid timeout - is timeout a problem?) Server: client ping from time to time (to avoid timeout - is timeout a problem?)
@history_1346_li @history_1351_li
Copy database: Tool with config GUI and batch mode, extensible (example: compare) Copy database: Tool with config GUI and batch mode, extensible (example: compare)
@history_1347_li @history_1352_li
Document, implement tool for long running transactions using user defined compensation statements Document, implement tool for long running transactions using user defined compensation statements
@history_1348_li @history_1353_li
Support SET TABLE DUAL READONLY Support SET TABLE DUAL READONLY
@history_1349_li @history_1354_li
Linked schema using CSV files: one schema for a directory of files; support indexes for CSV files Linked schema using CSV files: one schema for a directory of files; support indexes for CSV files
@history_1350_li @history_1355_li
Don't write stack traces for common exceptions like duplicate key to the log by default Don't write stack traces for common exceptions like duplicate key to the log by default
@history_1351_li @history_1356_li
Setting for MAX_QUERY_TIME (default no limit?) Setting for MAX_QUERY_TIME (default no limit?)
@history_1352_li @history_1357_li
GCJ: what is the state now? GCJ: what is the state now?
@history_1353_li @history_1358_li
Convert large byte[]/Strings to streams in the JDBC API (asap). Convert large byte[]/Strings to streams in the JDBC API (asap).
@history_1354_li @history_1359_li
Use Janino to convert Java to C++ Use Janino to convert Java to C++
@history_1355_li @history_1360_li
Reduce disk space usage (Derby uses less disk space?) Reduce disk space usage (Derby uses less disk space?)
@history_1356_li @history_1361_li
Events for: Database Startup, Connections, Login attempts, Disconnections, Prepare (after parsing), Web Server (see http://docs.openlinksw.com/virtuoso/fn_dbev_startup.html) Events for: Database Startup, Connections, Login attempts, Disconnections, Prepare (after parsing), Web Server (see http://docs.openlinksw.com/virtuoso/fn_dbev_startup.html)
@history_1357_li @history_1362_li
Optimization: Log compression Optimization: Log compression
@history_1358_li @history_1363_li
Compatibility: in MySQL, HSQLDB, /0.0 is NULL; in PostgreSQL, Derby: Division by zero Compatibility: in MySQL, HSQLDB, /0.0 is NULL; in PostgreSQL, Derby: Division by zero
@history_1359_li @history_1364_li
Functional tables should accept parameters from other tables (see FunctionMultiReturn) SELECT * FROM TEST T, P2C(T.A, T.R) Functional tables should accept parameters from other tables (see FunctionMultiReturn) SELECT * FROM TEST T, P2C(T.A, T.R)
@history_1360_li @history_1365_li
Custom class loader to reload functions on demand Custom class loader to reload functions on demand
@history_1361_li @history_1366_li
Test http://mysql-je.sourceforge.net/ Test http://mysql-je.sourceforge.net/
@history_1362_li @history_1367_li
Close all files when closing the database (including LOB files that are open on the client side) Close all files when closing the database (including LOB files that are open on the client side)
@history_1363_li @history_1368_li
Test Connection Pool http://jakarta.apache.org/commons/dbcp Test Connection Pool http://jakarta.apache.org/commons/dbcp
@history_1364_li @history_1369_li
Profiler option or profiling tool to find long running and often repeated queries (using DatabaseEventListener API) Profiler option or profiling tool to find long running and often repeated queries (using DatabaseEventListener API)
@history_1365_li @history_1370_li
Function to read/write a file from/to LOB Function to read/write a file from/to LOB
@history_1366_li @history_1371_li
Allow custom settings (@PATH for RUNSCRIPT for example) Allow custom settings (@PATH for RUNSCRIPT for example)
@history_1367_li @history_1372_li
Performance test: read the data (getString) and use column names to get the data Performance test: read the data (getString) and use column names to get the data
@history_1368_li @history_1373_li
EXE file: maybe use http://jsmooth.sourceforge.net EXE file: maybe use http://jsmooth.sourceforge.net
@history_1369_li @history_1374_li
SELECT ... FOR READ WAIT [maxMillisToWait] SELECT ... FOR READ WAIT [maxMillisToWait]
@history_1370_li @history_1375_li
Automatically delete the index file if opening it fails Automatically delete the index file if opening it fails
@history_1371_li @history_1376_li
Performance: Automatically build in-memory indexes if the whole table is in memory Performance: Automatically build in-memory indexes if the whole table is in memory
@history_1372_li @history_1377_li
H2 Console: The webclient could support more features like phpMyAdmin. H2 Console: The webclient could support more features like phpMyAdmin.
@history_1373_li @history_1378_li
The HELP information schema can be directly exposed in the Console The HELP information schema can be directly exposed in the Console
@history_1374_li @history_1379_li
Maybe use the 0x1234 notation for binary fields, see MS SQL Server Maybe use the 0x1234 notation for binary fields, see MS SQL Server
@history_1375_li @history_1380_li
KEY_COLUMN_USAGE (http://dev.mysql.com/doc/refman/5.0/en/information-schema.html, http://www.xcdsql.org/Misc/INFORMATION_SCHEMA%20With%20Rolenames.gif) KEY_COLUMN_USAGE (http://dev.mysql.com/doc/refman/5.0/en/information-schema.html, http://www.xcdsql.org/Misc/INFORMATION_SCHEMA%20With%20Rolenames.gif)
@history_1376_li @history_1381_li
Support Oracle CONNECT BY in some way: http://www.adp-gmbh.ch/ora/sql/connect_by.html, http://philip.greenspun.com/sql/trees.html Support Oracle CONNECT BY in some way: http://www.adp-gmbh.ch/ora/sql/connect_by.html, http://philip.greenspun.com/sql/trees.html
@history_1377_li @history_1382_li
SQL 2003 (http://www.wiscorp.com/sql_2003_standard.zip) SQL 2003 (http://www.wiscorp.com/sql_2003_standard.zip)
@history_1378_li @history_1383_li
http://www.jpackage.org http://www.jpackage.org
@history_1379_li @history_1384_li
Version column (number/sequence and timestamp based) Version column (number/sequence and timestamp based)
@history_1380_li @history_1385_li
Optimize getGeneratedKey: send last identity after each execute (server). Optimize getGeneratedKey: send last identity after each execute (server).
@history_1381_li @history_1386_li
Date: default date is '1970-01-01' (is it 1900-01-01 in the standard / other databases?) Date: default date is '1970-01-01' (is it 1900-01-01 in the standard / other databases?)
@history_1382_li @history_1387_li
Test and document UPDATE TEST SET (ID, NAME) = (SELECT ID*10, NAME || '!' FROM TEST T WHERE T.ID=TEST.ID); Test and document UPDATE TEST SET (ID, NAME) = (SELECT ID*10, NAME || '!' FROM TEST T WHERE T.ID=TEST.ID);
@history_1383_li @history_1388_li
Better space re-use in the files after deleting data (shrink the files) Better space re-use in the files after deleting data (shrink the files)
@history_1384_li @history_1389_li
Max memory rows / max undo log size: use block count / row size not row count Max memory rows / max undo log size: use block count / row size not row count
@history_1385_li @history_1390_li
Index summary is only written if log=2; maybe write it also when log=1 and everything is fine (and no in doubt transactions) Index summary is only written if log=2; maybe write it also when log=1 and everything is fine (and no in doubt transactions)
@history_1386_li @history_1391_li
Support 123L syntax as in Java; example: SELECT (2000000000*2) Support 123L syntax as in Java; example: SELECT (2000000000*2)
@history_1387_li @history_1392_li
Implement point-in-time recovery Implement point-in-time recovery
@history_1388_li @history_1393_li
Memory database: add a feature to keep named database open until 'shutdown' Memory database: add a feature to keep named database open until 'shutdown'
@history_1389_li @history_1394_li
Use the directory of the first script as the default directory for any scripts run inside that script Use the directory of the first script as the default directory for any scripts run inside that script
@history_1390_li @history_1395_li
Include the version name in the jar file name Include the version name in the jar file name
@history_1391_li @history_1396_li
Optimize IN(...), IN(select), ID=? OR ID=?: create temp table and use join Optimize IN(...), IN(select), ID=? OR ID=?: create temp table and use join
@history_1392_li @history_1397_li
LIKE: improved version for larger texts (currently using naive search) LIKE: improved version for larger texts (currently using naive search)
@history_1393_li @history_1398_li
Auto-reconnect on lost connection to server (even if the server was re-started) except if autocommit was off and there was pending transaction Auto-reconnect on lost connection to server (even if the server was re-started) except if autocommit was off and there was pending transaction
@history_1394_li @history_1399_li
The Script tool should work with other databases as well The Script tool should work with other databases as well
@history_1395_li @history_1400_li
Automatically convert to the next 'higher' data type whenever there is an overflow. Automatically convert to the next 'higher' data type whenever there is an overflow.
@history_1396_li @history_1401_li
Throw an exception when the application calls getInt on a Long (optional) Throw an exception when the application calls getInt on a Long (optional)
@history_1397_li @history_1402_li
Default date format for input and output (local date constants) Default date format for input and output (local date constants)
@history_1398_li @history_1403_li
Cache collation keys for performance Cache collation keys for performance
@history_1399_li @history_1404_li
Convert OR condition to UNION or IN if possible Convert OR condition to UNION or IN if possible
@history_1400_li @history_1405_li
ValueInt.convertToString and so on (remove Value.convertTo) ValueInt.convertToString and so on (remove Value.convertTo)
@history_1401_li @history_1406_li
Support custom Collators Support custom Collators
@history_1402_li @history_1407_li
Document ROWNUM usage for reports: SELECT ROWNUM, * FROM (subquery) Document ROWNUM usage for reports: SELECT ROWNUM, * FROM (subquery)
@history_1403_li @history_1408_li
Clustering: Reads should be randomly distributed or to a designated database on RAM Clustering: Reads should be randomly distributed or to a designated database on RAM
@history_1404_li @history_1409_li
Clustering: When a database is back alive, automatically synchronize with the master Clustering: When a database is back alive, automatically synchronize with the master
@history_1405_li @history_1410_li
Standalone tool to get relevant system properties and add it to the trace output. Standalone tool to get relevant system properties and add it to the trace output.
@history_1406_li @history_1411_li
Support mixed clustering mode (one embedded, the other server mode) Support mixed clustering mode (one embedded, the other server mode)
@history_1407_li @history_1412_li
Support 'call proc($1=value)' (PostgreSQL, Oracle) Support 'call proc($1=value)' (PostgreSQL, Oracle)
@history_1408_li @history_1413_li
HSQLDB compatibility: "INSERT INTO TEST(name) VALUES(?); SELECT IDENTITY()" HSQLDB compatibility: "INSERT INTO TEST(name) VALUES(?); SELECT IDENTITY()"
@history_1409_li @history_1414_li
Shutdown lock (shutdown can only start if there are no logins pending, and logins are delayed until shutdown ends) Shutdown lock (shutdown can only start if there are no logins pending, and logins are delayed until shutdown ends)
@history_1410_li @history_1415_li
Automatically delete the index file if opening it fails Automatically delete the index file if opening it fails
@history_1411_li @history_1416_li
DbAdapters http://incubator.apache.org/cayenne/ DbAdapters http://incubator.apache.org/cayenne/
@history_1412_li @history_1417_li
JAMon (proxy jdbc driver) JAMon (proxy jdbc driver)
@history_1413_li @history_1418_li
Console: Allow setting Null value; Alternative display format two column (for copy and paste as well) Console: Allow setting Null value; Alternative display format two column (for copy and paste as well)
@history_1414_li @history_1419_li
Console: Improve editing data (Tab, Shift-Tab, Enter, Up, Down, Shift+Del?) Console: Improve editing data (Tab, Shift-Tab, Enter, Up, Down, Shift+Del?)
@history_1415_li @history_1420_li
Console: Autocomplete Ctrl+Space inserts template Console: Autocomplete Ctrl+Space inserts template
@history_1416_li @history_1421_li
Google Code http://code.google.com/p/h2database/issues/list# Google Code http://code.google.com/p/h2database/issues/list#
@history_1417_li @history_1422_li
Simplify translation ('Donate a translation') Simplify translation ('Donate a translation')
@history_1418_li @history_1423_li
Option to encrypt .trace.db file Option to encrypt .trace.db file
@history_1419_li @history_1424_li
Write Behind Cache on SATA leads to data corruption See also http://sr5tech.com/write_back_cache_experiments.htm and http://www.jasonbrome.com/blog/archives/2004/04/03/writecache_enabled.html Write Behind Cache on SATA leads to data corruption See also http://sr5tech.com/write_back_cache_experiments.htm and http://www.jasonbrome.com/blog/archives/2004/04/03/writecache_enabled.html
@history_1420_li @history_1425_li
Functions with unknown return or parameter data types: serialize / deserialize Functions with unknown return or parameter data types: serialize / deserialize
@history_1421_li @history_1426_li
Test if idle TCP connections are closed, and how to disable that Test if idle TCP connections are closed, and how to disable that
@history_1422_li @history_1427_li
Try using a factory for Row, Value[] (faster?), http://javolution.org/, alternative ObjectArray / IntArray Try using a factory for Row, Value[] (faster?), http://javolution.org/, alternative ObjectArray / IntArray
@history_1423_li @history_1428_li
Auto-Update feature for database, .jar file Auto-Update feature for database, .jar file
@history_1424_li @history_1429_li
ResultSet SimpleResultSet.readFromURL(String url): id varchar, state varchar, released timestamp ResultSet SimpleResultSet.readFromURL(String url): id varchar, state varchar, released timestamp
@history_1425_li @history_1430_li
RANK() and DENSE_RANK(), Partition using OVER() RANK() and DENSE_RANK(), Partition using OVER()
@history_1426_li @history_1431_li
ROW_NUMBER (not the same as ROWNUM) ROW_NUMBER (not the same as ROWNUM)
@history_1427_li @history_1432_li
Partial indexing (see PostgreSQL) Partial indexing (see PostgreSQL)
@history_1428_li @history_1433_li
BUILD should fail if ant test fails BUILD should fail if ant test fails
@history_1429_li @history_1434_li
http://rubyforge.org/projects/hypersonic/ http://rubyforge.org/projects/hypersonic/
@history_1430_li @history_1435_li
DbVisualizer profile for H2 DbVisualizer profile for H2
@history_1431_li @history_1436_li
Add comparator (x === y) : (x = y or (x is null and y is null)) Add comparator (x === y) : (x = y or (x is null and y is null))
@history_1432_li @history_1437_li
Try to create trace file even for read only databases Try to create trace file even for read only databases
@history_1433_li @history_1438_li
Add a sample application that runs the H2 unit test and writes the result to a file (so it can be included in the user app) Add a sample application that runs the H2 unit test and writes the result to a file (so it can be included in the user app)
@history_1434_li @history_1439_li
Count on a column that can not be null would be optimized to COUNT(*) Count on a column that can not be null would be optimized to COUNT(*)
@history_1435_li @history_1440_li
Table order: ALTER TABLE TEST ORDER BY NAME DESC (MySQL compatibility) Table order: ALTER TABLE TEST ORDER BY NAME DESC (MySQL compatibility)
@history_1436_li @history_1441_li
Backup tool should work with other databases as well Backup tool should work with other databases as well
@history_1437_li @history_1442_li
Console: -ifExists doesn't work for the console. Add a flag to disable other dbs Console: -ifExists doesn't work for the console. Add a flag to disable other dbs
@history_1438_li @history_1443_li
Maybe use Fowler Noll Vo hash function Maybe use Fowler Noll Vo hash function
@history_1439_li @history_1444_li
Improved full text search (supports LOBs, reader / tokenizer / filter). Improved full text search (supports LOBs, reader / tokenizer / filter).
@history_1440_li @history_1445_li
Performance: Update in-place Performance: Update in-place
@history_1441_li @history_1446_li
Check if 'FSUTIL behavior set disablelastaccess 1' improves the performance (fsutil behavior query disablelastaccess) Check if 'FSUTIL behavior set disablelastaccess 1' improves the performance (fsutil behavior query disablelastaccess)
@history_1442_li @history_1447_li
Java static code analysis: http://pmd.sourceforge.net/ Java static code analysis: http://pmd.sourceforge.net/
@history_1443_li @history_1448_li
Java static code analysis: http://www.eclipse.org/tptp/ Java static code analysis: http://www.eclipse.org/tptp/
@history_1444_li @history_1449_li
Compatibility for CREATE SCHEMA AUTHORIZATION Compatibility for CREATE SCHEMA AUTHORIZATION
@history_1445_li @history_1450_li
Implement Clob / Blob truncate and the remaining functionality Implement Clob / Blob truncate and the remaining functionality
@history_1446_li @history_1451_li
Maybe close LOBs after closing connection Maybe close LOBs after closing connection
@history_1447_li @history_1452_li
Tree join functionality Tree join functionality
@history_1448_li @history_1453_li
Support alter table add column if table has views defined Support alter table add column if table has views defined
@history_1449_li @history_1454_li
Add multiple columns at the same time with ALTER TABLE .. ADD .. ADD .. Add multiple columns at the same time with ALTER TABLE .. ADD .. ADD ..
@history_1450_li @history_1455_li
Support trigger on the tables information_schema.tables and ...columns Support trigger on the tables information_schema.tables and ...columns
@history_1451_li @history_1456_li
Add H2 to Gem (Ruby install system) Add H2 to Gem (Ruby install system)
@history_1452_li @history_1457_li
API for functions / user tables API for functions / user tables
@history_1453_li @history_1458_li
Order conditions inside AND / OR to optimize the performance Order conditions inside AND / OR to optimize the performance
@history_1454_li @history_1459_li
Support linked JCR tables Support linked JCR tables
@history_1455_li @history_1460_li
Make sure H2 is supported by Execute Query: http://executequery.org/ Make sure H2 is supported by Execute Query: http://executequery.org/
@history_1456_li @history_1461_li
Read InputStream when executing, as late as possible (maybe only embedded mode). Problem with re-execute. Read InputStream when executing, as late as possible (maybe only embedded mode). Problem with re-execute.
@history_1457_li @history_1462_li
Full text search: min word length; store word positions Full text search: min word length; store word positions
@history_1458_li @history_1463_li
FTP Server: Implement a client to send / receive files to server (dir, get, put) FTP Server: Implement a client to send / receive files to server (dir, get, put)
@history_1459_li @history_1464_li
FTP Server: Implement SFTP / FTPS FTP Server: Implement SFTP / FTPS
@history_1460_li @history_1465_li
Add an option to the SCRIPT command to generate only portable / standard SQL Add an option to the SCRIPT command to generate only portable / standard SQL
@history_1461_li @history_1466_li
Test Dezign for Databases (http://www.datanamic.com) Test Dezign for Databases (http://www.datanamic.com)
@history_1462_li @history_1467_li
Fast library for parsing / formatting: http://javolution.org/ Fast library for parsing / formatting: http://javolution.org/
@history_1463_li @history_1468_li
Updatable Views (simple cases first) Updatable Views (simple cases first)
@history_1464_li @history_1469_li
Improve create index performance Improve create index performance
@history_1465_li @history_1470_li
Support ARRAY data type Support ARRAY data type
@history_1466_li @history_1471_li
Implement more JDBC 4.0 features Implement more JDBC 4.0 features
@history_1467_li @history_1472_li
H2 Console: implement a servlet to allow simple web app integration H2 Console: implement a servlet to allow simple web app integration
@history_1468_li @history_1473_li
Support TRANSFORM / PIVOT as in MS Access Support TRANSFORM / PIVOT as in MS Access
@history_1469_li @history_1474_li
Sequence: PostgreSQL compatibility (rename, create) (http://www.postgresql.org/docs/8.2/static/sql-altersequence.html) Sequence: PostgreSQL compatibility (rename, create) (http://www.postgresql.org/docs/8.2/static/sql-altersequence.html)
@history_1470_li @history_1475_li
SELECT * FROM (VALUES (...), (...), ....) AS alias(f1, ...) SELECT * FROM (VALUES (...), (...), ....) AS alias(f1, ...)
@history_1471_li @history_1476_li
Support updatable views with join on primary keys (to extend a table) Support updatable views with join on primary keys (to extend a table)
@history_1472_li @history_1477_li
File_Read / File_Store funktionen: FILE_STORE('test.sql', ?), FILE_READ('test.sql') File_Read / File_Store funktionen: FILE_STORE('test.sql', ?), FILE_READ('test.sql')
@history_1473_li @history_1478_li
Public interface for functions (not public static) Public interface for functions (not public static)
@history_1474_li @history_1479_li
Autocomplete: if I type the name of a table that does not exist (should say: syntax not supported) Autocomplete: if I type the name of a table that does not exist (should say: syntax not supported)
@history_1475_li @history_1480_li
Autocomplete: schema support: "Other Grammar","Table Expression","{[schemaName.]tableName | (select)} [[AS] newTableAlias] Autocomplete: schema support: "Other Grammar","Table Expression","{[schemaName.]tableName | (select)} [[AS] newTableAlias]
@history_1476_li @history_1481_li
Functions: options readonly, deterministic (pure, always return the same value) Functions: options readonly, deterministic (pure, always return the same value)
@history_1477_li @history_1482_li
Document FTP server, including -ftpTask option to execute / kill remote processes Document FTP server, including -ftpTask option to execute / kill remote processes
@history_1478_li @history_1483_li
Add jdbcx to the javadocs Add jdbcx to the javadocs
@history_1479_li @history_1484_li
Shrink the data file without closing the database (if the end of the file is empty) Shrink the data file without closing the database (if the end of the file is empty)
@history_1480_li @history_1485_li
Delay reading the row if data is not required Delay reading the row if data is not required
@history_1481_li @history_1486_li
Eliminate undo log records if stored on disk (just one pointer per block, not per record) Eliminate undo log records if stored on disk (just one pointer per block, not per record)
@history_1482_li @history_1487_li
Feature matrix like here: http://www.inetsoftware.de/products/jdbc/mssql/features/default.asp. Feature matrix like here: http://www.inetsoftware.de/products/jdbc/mssql/features/default.asp.
@history_1483_li @history_1488_li
Updatable result set on table without primary key or unique index Updatable result set on table without primary key or unique index
@history_1484_li @history_1489_li
Use LinkedList instead of ArrayList where applicable Use LinkedList instead of ArrayList where applicable
@history_1485_li @history_1490_li
Optimization: (A=B AND B=C) > (A=B AND B=C AND A=C) Optimization: (A=B AND B=C) > (A=B AND B=C AND A=C)
@history_1486_li @history_1491_li
Support % operator (modulo) Support % operator (modulo)
@history_1487_li @history_1492_li
Large subqueries: close them when the main query is closed, not earlier (so result can be reused) Large subqueries: close them when the main query is closed, not earlier (so result can be reused)
@history_1488_li @history_1493_li
Support 1+'2'=3, '1'+'2'='12' (MS SQL Server compatibility) Support 1+'2'=3, '1'+'2'='12' (MS SQL Server compatibility)
@history_1489_li @history_1494_li
Support nested transactions Support nested transactions
@history_1490_li @history_1495_li
Add a benchmark for big databases, and one for many users Add a benchmark for big databases, and one for many users
@history_1491_li @history_1496_li
Compression in the result set (repeating values in the same column) Compression in the result set (repeating values in the same column)
@history_1492_li @history_1497_li
Improve command line consistency (+/- options, or true false options) Improve command line consistency (+/- options, or true false options)
@history_1493_li @history_1498_li
Allow to use the catalog name in statements: [[catalog.]schema.]object Allow to use the catalog name in statements: [[catalog.]schema.]object
@history_1494_li @history_1499_li
Support curtimestamp (like curtime, curdate) Support curtimestamp (like curtime, curdate)
@history_1495_li @history_1500_li
Support ANALYZE {TABLE|INDEX} tableName COMPUTE|ESTIMATE|DELETE STATISTICS ptnOption options Support ANALYZE {TABLE|INDEX} tableName COMPUTE|ESTIMATE|DELETE STATISTICS ptnOption options
@history_1496_li @history_1501_li
Support Sequoia (Continuent.org) Support Sequoia (Continuent.org)
@history_1497_li @history_1502_li
Dynamic length numbers / special methods for DataPage.writeByte / writeShort / Ronni Nielsen Dynamic length numbers / special methods for DataPage.writeByte / writeShort / Ronni Nielsen
@history_1498_li @history_1503_li
Pluggable tracing system, ThreadPool, (AvalonDB / deebee / Paul Hammant) Pluggable tracing system, ThreadPool, (AvalonDB / deebee / Paul Hammant)
@history_1499_li @history_1504_li
Recursive Queries (see details) Recursive Queries (see details)
@history_1500_li @history_1505_li
Use index on boolean flag (see details) Use index on boolean flag (see details)
@history_1501_li @history_1506_li
Add build for embedded database only Add build for embedded database only
@history_1502_li @history_1507_li
Release locks (shared or exclusive) on demand Release locks (shared or exclusive) on demand
@history_1503_li @history_1508_li
Support catalog names Support catalog names
@history_1504_li @history_1509_li
Add object id to metadata tables Add object id to metadata tables
@history_1505_li @history_1510_li
Support OUTER UNION Support OUTER UNION
@history_1506_li @history_1511_li
Support Parameterized Views (similar to CSVREAD, but using just SQL for the definition) Support Parameterized Views (similar to CSVREAD, but using just SQL for the definition)
@history_1507_li @history_1512_li
Implement a command line SQL utility similar to HenPlus: http://henplus.sourceforge.net Implement a command line SQL utility similar to HenPlus: http://henplus.sourceforge.net
@history_1508_li @history_1513_li
A way (JDBC driver) to map an URL (jdbc:h2map:c1) to a connection object A way (JDBC driver) to map an URL (jdbc:h2map:c1) to a connection object
@history_1509_li @history_1514_li
Build script for the embedded functionality only (h2embedded.jar) Build script for the embedded functionality only (h2embedded.jar)
@history_1510_li @history_1515_li
Option for SCRIPT to only process one or a set of tables, and append to a file Option for SCRIPT to only process one or a set of tables, and append to a file
@history_1511_li @history_1516_li
Support using a unique index for IS NULL (including linked tables) Support using a unique index for IS NULL (including linked tables)
@history_1512_li @history_1517_li
Support linked tables to the current database Support linked tables to the current database
@history_1513_li @history_1518_li
Support dynamic linked schema (automatically adding/updating/removing tables) Support dynamic linked schema (automatically adding/updating/removing tables)
@history_1514_li @history_1519_li
Compatibility with Derby: VALUES(1), (2); SELECT * FROM (VALUES (1), (2)) AS myTable(c1) Compatibility with Derby: VALUES(1), (2); SELECT * FROM (VALUES (1), (2)) AS myTable(c1)
@history_1515_li @history_1520_li
Compatibility: # is the start of a single line comment (MySQL) but date quote (Access). Mode specific Compatibility: # is the start of a single line comment (MySQL) but date quote (Access). Mode specific
@history_1516_li @history_1521_li
Run benchmarks with JDK 1.5, JDK 1.6, java -server Run benchmarks with JDK 1.5, JDK 1.6, java -server
@history_1517_li @history_1522_li
Optimizations: Faster hash function for strings, byte arrays, big decimal Optimizations: Faster hash function for strings, byte arrays, big decimal
@history_1518_li @history_1523_li
Improve trace feature: add replay functionality Improve trace feature: add replay functionality
@history_1519_li @history_1524_li
DatabaseEventListener: callback for all operations (including expected time, RUNSCRIPT) and cancel functionality DatabaseEventListener: callback for all operations (including expected time, RUNSCRIPT) and cancel functionality
@history_1520_li @history_1525_li
H2 Console / large result sets: use 'streaming' instead of building the page in-memory H2 Console / large result sets: use 'streaming' instead of building the page in-memory
@history_1521_li @history_1526_li
Benchmark: add a graph to show how databases scale (performance/database size) Benchmark: add a graph to show how databases scale (performance/database size)
@history_1522_li @history_1527_li
Implement a SQLData interface to map your data over to a custom object Implement a SQLData interface to map your data over to a custom object
@history_1523_li @history_1528_li
Extend H2 Console to run tools (show command line as well) Extend H2 Console to run tools (show command line as well)
@history_1524_li @history_1529_li
Make DDL (Data Definition) operations transactional Make DDL (Data Definition) operations transactional
@history_1525_li @history_1530_li
Sequence: add features [NO] MINVALUE, MAXVALUE, CACHE, CYCLE Sequence: add features [NO] MINVALUE, MAXVALUE, CACHE, CYCLE
@history_1526_li @history_1531_li
Allow execution time prepare for SELECT * FROM CSVREAD(?, 'columnNameString') Allow execution time prepare for SELECT * FROM CSVREAD(?, 'columnNameString')
@history_1527_li @history_1532_li
Support multiple directories (on different hard drives) for the same database Support multiple directories (on different hard drives) for the same database
@history_1528_li @history_1533_li
Server protocol: use challenge response authentication, but client sends hash(user+password) encrypted with response Server protocol: use challenge response authentication, but client sends hash(user+password) encrypted with response
@history_1529_li @history_1534_li
Support EXEC[UTE] (doesn't return a result set, compatible to MS SQL Server) Support EXEC[UTE] (doesn't return a result set, compatible to MS SQL Server)
@history_1530_li @history_1535_li
GROUP BY and DISTINCT: support large groups (buffer to disk), do not keep large sets in memory GROUP BY and DISTINCT: support large groups (buffer to disk), do not keep large sets in memory
@history_1531_li @history_1536_li
Support native XML data type Support native XML data type
@history_1532_li @history_1537_li
Support triggers with a string property or option: SpringTrigger, OSGITrigger Support triggers with a string property or option: SpringTrigger, OSGITrigger
@history_1533_li @history_1538_li
Clustering: adding a node should be very fast and without interrupting clients (very short lock) Clustering: adding a node should be very fast and without interrupting clients (very short lock)
@history_1534_li @history_1539_li
Support materialized views (using triggers) Support materialized views (using triggers)
@history_1535_li @history_1540_li
Store dates in local timezone (portability of database files) Store dates in local timezone (portability of database files)
@history_1536_li @history_1541_li
Ability to resize the cache array when resizing the cache Ability to resize the cache array when resizing the cache
@history_1537_li @history_1542_li
Automatic conversion from WHERE X>10 AND X>20 to X>20 Automatic conversion from WHERE X>10 AND X>20 to X>20
@history_1538_li @history_1543_li
Time based cache writing (one second after writing the log) Time based cache writing (one second after writing the log)
@history_1539_li @history_1544_li
Write a H2 driver for http://db.apache.org/ddlutils/ Write a H2 driver for http://db.apache.org/ddlutils/
@history_1540_li @history_1545_li
Index usage for REGEXP LIKE. Index usage for REGEXP LIKE.
@history_1541_li @history_1546_li
Add a role DBA (like ADMIN). Add a role DBA (like ADMIN).
@history_1542_li @history_1547_li
Automatic mode: jdbc:h2:auto: (embedded mode if possible, if not use server mode). Problem: what to do when server stops while others are connected to it. Automatic mode: jdbc:h2:auto: (embedded mode if possible, if not use server mode). Problem: what to do when server stops while others are connected to it.
@history_1543_li @history_1548_li
Access rights: remember the owner of an object. COMMENT: allow owner of object to change it. Access rights: remember the owner of an object. COMMENT: allow owner of object to change it.
@history_1544_li @history_1549_li
Implement INSTEAD OF trigger. Implement INSTEAD OF trigger.
@history_1545_li @history_1550_li
Access rights: Finer grained access control (grant access for specific functions) Access rights: Finer grained access control (grant access for specific functions)
@history_1546_li @history_1551_li
Support N'text' Support N'text'
@history_1547_li @history_1552_li
Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger Support SCOPE_IDENTITY() to avoid problems when inserting rows in a trigger
@history_1548_li @history_1553_li
Support DESCRIBE like MySQL or Oracle (DESC|DESCRIBE {[schema.]object[@connect_identifier]}) Support DESCRIBE like MySQL or Oracle (DESC|DESCRIBE {[schema.]object[@connect_identifier]})
@history_1549_li @history_1554_li
Set a connection read only (Connection.setReadOnly) Set a connection read only (Connection.setReadOnly)
@history_1550_li @history_1555_li
In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key In MySQL mode, for AUTO_INCREMENT columns, don't set the primary key
@history_1551_li @history_1556_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). 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).
@history_1552_li @history_1557_li
Read-only sessions (Connection.setReadOnly) Read-only sessions (Connection.setReadOnly)
@history_1553_li @history_1558_li
Support compatibility for jdbc:hsqldb:res: Support compatibility for jdbc:hsqldb:res:
@history_1554_li @history_1559_li
In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true) In the MySQL and PostgreSQL, use lower case identifiers by default (DatabaseMetaData.storesLowerCaseIdentifiers = true)
@history_1555_li @history_1560_li
Provide a simple, lightweight O/R mapping tool Provide a simple, lightweight O/R mapping tool
@history_1556_li @history_1561_li
Provide an Java SQL builder with standard and H2 syntax Provide an Java SQL builder with standard and H2 syntax
@history_1557_li @history_1562_li
Data compression for in-memory database Data compression for in-memory database
@history_1558_li @history_1563_li
Trace: write os, file system, vm,... when opening the database Trace: write os, file system, vm,... when opening the database
@history_1559_li @history_1564_li
Trace: write dangerous operations (set log 0,...) in every case (including when opening the database) Trace: write dangerous operations (set log 0,...) in every case (including when opening the database)
@history_1560_li @history_1565_li
ParameterMetaData should return correct data type where possible (INSERT for example) ParameterMetaData should return correct data type where possible (INSERT for example)
@history_1561_li @history_1566_li
Support indexes for views (probably requires materialized views) Support indexes for views (probably requires materialized views)
@history_1562_li @history_1567_li
Linked tables that point to the same database should share the connection Linked tables that point to the same database should share the connection
@history_1563_li @history_1568_li
Use log for rollback Use log for rollback
@history_1564_li @history_1569_li
Document SET SEARCH_PATH, BEGIN, EXECUTE, $ parameters Document SET SEARCH_PATH, BEGIN, EXECUTE, $ parameters
@history_1565_li @history_1570_li
Complete Javadocs for ErrorCode messages and add to docs Complete Javadocs for ErrorCode messages and add to docs
@history_1566_li @history_1571_li
Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6 Browser: use Desktop.isDesktopSupported and browse when using JDK 1.6
@history_1567_li @history_1572_li
Document org.h2.samples.MixedMode Document org.h2.samples.MixedMode
@history_1568_li @history_1573_li
Server: use one listener (detect if the request comes from an PG or TCP client) Server: use one listener (detect if the request comes from an PG or TCP client)
@history_1569_li @history_1574_li
Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility) Store dates as 'local'. Existing files use GMT. Use escape syntax for compatibility)
@history_1570_li @history_1575_li
Support data type INTERVAL Support data type INTERVAL
@history_1571_li @history_1576_li
NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ... NATURAL JOIN: MySQL and PostgreSQL don't repeat columns when using SELECT * ...
@history_1572_li @history_1577_li
Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200 Optimize SELECT MIN(ID), MAX(ID), COUNT(*) FROM TEST WHERE ID BETWEEN 100 AND 200
@history_1573_li @history_1578_li
Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER Support Oracle functions: TRUNC, NVL2, TO_CHAR, TO_DATE, TO_NUMBER
@history_1574_li @history_1579_li
Support setQueryTimeout (using System.currentTimeMillis in a loop; not using a thread) Support setQueryTimeout (using System.currentTimeMillis in a loop; not using a thread)
@history_1575_h3 @history_1580_h3
Not Planned Not Planned
@history_1576_li @history_1581_li
HSQLDB (did) support this: select id i from test where i>0 (other databases don't) HSQLDB (did) support this: select id i from test where i>0 (other databases don't)
@history_1577_li @history_1582_li
String.intern (so that Strings can be compared with ==) will not be used because some VMs have problems when used extensively String.intern (so that Strings can be compared with ==) will not be used because some VMs have problems when used extensively
@history_1578_h2 @history_1583_h2
Supporters Supporters
@history_1579_p @history_1584_p
Many thanks for those who helped by finding and reporting bugs, gave valuable feedback, spread the word and have translated this project. Also many thanks to the donors who contributed via PayPal: Many thanks for those who helped by finding and reporting bugs, gave valuable feedback, spread the word and have translated this project. Also many thanks to the donors who contributed via PayPal:
@history_1580_li @history_1585_li
Florent Ramiere, France Florent Ramiere, France
@history_1581_li @history_1586_li
Pete Haidinyak, USA Pete Haidinyak, USA
@history_1582_li @history_1587_li
Jun Iyama, Japan Jun Iyama, Japan
@history_1583_li @history_1588_li
Antonio Casqueiro, Portugal Antonio Casqueiro, Portugal
@history_1584_li @history_1589_li
lumber-mill.co.jp, Japan lumber-mill.co.jp, Japan
@installation_1000_h1 @installation_1000_h1
...@@ -4991,7 +5006,7 @@ JDBC and (partial) ODBC API; Web Client application ...@@ -4991,7 +5006,7 @@ JDBC and (partial) ODBC API; Web Client application
Download Download
@mainWeb_1007_td @mainWeb_1007_td
Version 1.0.58 (2007-09-15): Version 1.0.59 (2007-10-03):
@mainWeb_1008_a @mainWeb_1008_a
Windows Installer (2.7 MB) Windows Installer (2.7 MB)
......
h2/src/docsrc/text/_docs_ja.utf8.txt
浏览文件 @ 67a90bac
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h2/src/docsrc/textbase/_docs_en.properties
浏览文件 @ 67a90bac
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h2/src/test/org/h2/test/db/TestLob.java
浏览文件 @ 67a90bac
...@@ -115,7 +115,7 @@ public class TestLob extends TestBase { ...@@ -115,7 +115,7 @@ public class TestLob extends TestBase {
in.close(); in.close();
if (len > 0) { if (len > 0) {
// in Linux, it seems it is still possible to read in files even if they are deleted // in Linux, it seems it is still possible to read in files even if they are deleted
if(System.getProperty("os.name").indexOf("Windows") > 0) { if (System.getProperty("os.name").indexOf("Windows") > 0) {
error("Error expected; len=" + len); error("Error expected; len=" + len);
} }
} }
......
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