Some DatabaseMetaData methods didn't work when using ALLOW_LITERALS NONE.
@changelog_1004_li
On out of disk space, the database could get corrupt sometimes, if later write operations succeeded. The same problem happened on other kinds of I/O exceptions (where one or some of the writes fail, but subsequent writes succeed). Now the file is closed on the first unsuccessful write operation, so that later requests fail consistently.
Trying to convert a VARCHAR to UUID will now fail if the text contains a character that is not a hex digit, '-', or not a whitespace.
@changelog_1005_li
DatabaseEventListener.diskSpaceIsLow() is no longer supported because it can't be guaranteed that it always works correctly.
TriggerAdapter: in "before" triggers, values can be changed using the ResultSet.updateX methods.
@changelog_1006_li
XMLTEXT now supports an optional parameter to escape newlines.
Creating a table with column data type NULL now works (even if not very useful).
@changelog_1007_li
XMLNODE now support an optional parameter to disable indentation.
ALTER TABLE ALTER COLUMN no longer copies the data for widening conversions (for example if only the precision was increased) unless necessary.
@changelog_1008_li
Csv.write now formats date, time, and timestamp values using java.sql.Date / Time / Timestamp.toString(). Previously, ResultSet.getString() was used, which didn't work well for Oracle.
Multi-threaded kernel: concurrently running an online backup and updating the database resulted in a broken (transactionally incorrect) backup file in some cases.
@changelog_1009_li
The shell script <code>h2.sh</code> can now be run from within a different directory. Thanks a lot to Daniel Serodio for the patch!
The script created by SCRIPT DROP did not always work if multiple views existed that depend on each other.
@changelog_1010_li
The page size of a persistent database can now be queries using: select * from information_schema.settings where name = 'info.PAGE_SIZE'
MathUtils.getSecureRandom could log a warning to System.err in case the /dev/random is very slow, and the System.getProperties().toString() returned a string larger than 64 KB.
@changelog_1011_li
The database file locking mechanism "FS" (;FILE_LOCK=FS) did not work on Linux since version 1.3.161.
@changelog_1012_li
Sequences: the functions NEXTVAL and CURRVAL did not work as expected when using quoted, mixed case sequence names.
@changelog_1013_li
The constructor for Csv objects is now public, and Csv.getInstance() is now deprecated.
@changelog_1014_li
SimpleResultSet: updating a result set is now supported.
@changelog_1015_li
Database URL: extra semicolons are not supported.
@changelog_1016_h2
Version 1.3.163 (2011-12-30)
@changelog_1017_li
On out of disk space, the database could get corrupt sometimes, if later write operations succeeded. The same problem happened on other kinds of I/O exceptions (where one or some of the writes fail, but subsequent writes succeed). Now the file is closed on the first unsuccessful write operation, so that later requests fail consistently.
@changelog_1018_li
DatabaseEventListener.diskSpaceIsLow() is no longer supported because it can't be guaranteed that it always works correctly.
@changelog_1019_li
XMLTEXT now supports an optional parameter to escape newlines.
@changelog_1020_li
XMLNODE now support an optional parameter to disable indentation.
@changelog_1021_li
Csv.write now formats date, time, and timestamp values using java.sql.Date / Time / Timestamp.toString(). Previously, ResultSet.getString() was used, which didn't work well for Oracle.
@changelog_1022_li
The shell script <code>h2.sh</code> can now be run from within a different directory. Thanks a lot to Daniel Serodio for the patch!
@changelog_1023_li
The page size of a persistent database can now be queries using: select * from information_schema.settings where name = 'info.PAGE_SIZE'
@changelog_1024_li
In the server mode, BLOB and CLOB objects are no longer closed when the result set is closed (as required by the JDBC spec).
@changelog_1012_h2
@changelog_1025_h2
Version 1.3.162 (2011-11-26)
@changelog_1013_li
@changelog_1026_li
The following system properties are no longer supported: <code>h2.allowBigDecimalExtensions</code>, <code>h2.emptyPassword</code>, <code>h2.minColumnNameMap</code>, <code>h2.returnLobObjects</code>, <code>h2.webMaxValueLength</code>.
@changelog_1014_li
@changelog_1027_li
When using a VPN, starting a H2 server did not work (for some VPN software).
@changelog_1015_li
@changelog_1028_li
Oracle compatibility: support for DECODE(...).
@changelog_1016_li
@changelog_1029_li
Lucene fulltext search: creating an index is now faster if the table already contains data. Thanks a lot to Angel Leon from the FrostWire Team for the patch!
@changelog_1017_li
@changelog_1030_li
Update statements with a column list in brackets did not work if the list only contains one column. Example: update test set (id)=(id).
@changelog_1018_li
@changelog_1031_li
Read-only databases in a zip file did not work when using the -baseDir option.
@changelog_1019_li
@changelog_1032_li
Issue 334: SimpleResultSet.getString now also works for Clob columns.
@changelog_1020_li
@changelog_1033_li
Subqueries with an aggregate did not always work. Example: select (select count(*) from test where a = t.a and b = 0) from test t group by a
@changelog_1021_li
@changelog_1034_li
Server: in some (theoretical) cases, exceptions while closing the connection were ignored.
@changelog_1022_li
@changelog_1035_li
Server.createTcpServer, createPgServer, createWebServer: invalid arguments are now detected.
@changelog_1023_li
@changelog_1036_li
The selectivity of LOB columns is no longer calculated because indexes on LOB columns are not supported (however this should have little effect on performance, as the selectivity is calculated from the hash code and not the data).
@changelog_1024_li
@changelog_1037_li
New experimental system property "h2.modifyOnWrite": when enabled, the database file is only modified when writing to the database. When enabled, the serialized file lock is much faster for read-only operations.
@changelog_1025_li
@changelog_1038_li
A NullPointerException could occur in TableView.isDeterministic for invalid views.
@changelog_1026_li
@changelog_1039_li
Issue 180: when deserializing objects, the context class loader is used instead of the default class loader if the system property "h2.useThreadContextClassLoader" is set. Thanks a lot to Noah Fontes for the patch!
@changelog_1027_li
@changelog_1040_li
When using the exclusive mode, LOB operations could cause the thread to block. This also affected the CreateCluster tool (when using BLOB or CLOB data).
@changelog_1028_li
@changelog_1041_li
The optimization for "group by" was not working correctly if the group by column was aliased in the select list.
@changelog_1029_li
@changelog_1042_li
Issue 326: improved support for case sensitive (mixed case) identifiers without quotes when using DATABASE_TO_UPPER=FALSE.
@changelog_1030_h2
@changelog_1043_h2
Version 1.3.161 (2011-10-28)
@changelog_1031_li
@changelog_1044_li
Issue 351: MySQL mode: can not create a table with the column "KEY", and can not open databases where such a table already exists.
@changelog_1032_li
@changelog_1045_li
TCP server: when using the trace option ("-trace"), the trace output contained unnecessary stack traces when stopping the server.
@changelog_1033_li
@changelog_1046_li
Issue 354: when using the multi-threaded kernel option, and multiple threads concurrently prepared SQL statements that use the same view or the same index of a view, then in some cases an infinite loop could occur.
@changelog_1034_li
@changelog_1047_li
Issue 350: when using instead of triggers, executeUpdate for delete operations always returned 0.
@changelog_1035_li
@changelog_1048_li
Some timestamps with timezone were not converted correctly. For example, in the PST timezone, the timestamp 2011-10-26 08:00:00Z was converted to 2011-10-25 25:00:00 instead of 2011-10-26 01:00:00. Depending on the database operation, this caused subsequent error.
@changelog_1036_li
@changelog_1049_li
Sequences with cache size smaller than 0 did not work correctly.
@changelog_1037_li
@changelog_1050_li
Issue 356: for Blob objects, InputStream.skip() returned 0, causing EOFException in Blob.getBytes(.., ..).
@changelog_1038_li
@changelog_1051_li
Updatable result sets: if the value is not set when inserting a new row, the default value is now used (the same behavior as MySQL, PostgreSQL, and Apache Derby) instead of NULL.
@changelog_1039_li
@changelog_1052_li
Conditions of the form IN(SELECT ...) where slow and increased the database size if the subquery result size was larger then the configured MAX_MEMORY_ROWS.
@changelog_1040_li
@changelog_1053_li
Issue 347: the RunScript and Shell tools now ignore empty statements.
@changelog_1041_li
@changelog_1054_li
Issue 246: improved error message for data conversion problems.
@changelog_1042_li
@changelog_1055_li
Issue 344: the build now supports a custom Maven repository location.
@changelog_1043_li
@changelog_1056_li
Issue 334: Java functions that return CLOB or BLOB objects could not be used as tables.
@changelog_1044_li
@changelog_1057_li
SimpleResultSet now supports getColumnTypeName and getColumnClassName.
@changelog_1045_li
@changelog_1058_li
SimpleResultSet now has minimal BLOB and CLOB support.
@changelog_1046_li
@changelog_1059_li
Improved performance for large databases (many GB), and databases with a small page size.
@changelog_1047_li
@changelog_1060_li
The Polish translation has been improved by Jarosław Kokociński.
@changelog_1048_li
@changelog_1061_li
When using the built-in connection pool, after calling the "shutdown" SQL statement, a warning was written to the .trace.db file about an unclosed connection.
@changelog_1049_li
@changelog_1062_li
Improved compatibility for "fetch first / next row(s)". Thanks a lot to litailang for the patch!
@changelog_1050_li
@changelog_1063_li
Improved compatibility with the Java 7 FileSystem abstraction.
@changelog_1051_h2
@changelog_1064_h2
Version 1.3.160 (2011-09-11)
@changelog_1052_li
@changelog_1065_li
Computed columns could not refer to itself.
@changelog_1053_li
@changelog_1066_li
Issue 340: Comparison with "x = all(select ...)" or similar in a view or subquery that was used as a table returned the wrong result.
@changelog_1054_li
@changelog_1067_li
Comparison with "x = all(select ...)" or similar returned the wrong result for some cases (for example if the subquery returned no rows, or multiple rows with the same value, or null, or if x was null).
@changelog_1055_li
@changelog_1068_li
Issue 335: Could not run DROP ALL OBJECTS DELETE FILES on older databases with CLOB or BLOB data. The problem was that the metadata table was not locked in some cases, so that a rollback could result in a corrupt database in a database if the lob storage was upgraded.
@changelog_1056_li
@changelog_1069_li
Source code switching using //## has been simplified. The Java 1.5 tag has been removed because is no longer needed.
@changelog_1057_li
@changelog_1070_li
The JDBC methods PreparedStatement.setTimestamp, setTime, and setDate with a calendar, and the methods ResultSet.getTimestamp, getTime, and getDate with a calendar converted the value in the wrong way, so that for some timestamps the converted value was wrong (where summertime starts, one hour per year).
@changelog_1058_li
@changelog_1071_li
Invalid tables names in 'order by' columns were not detected in some cases. Example: select x from dual order by y.x
@changelog_1059_li
@changelog_1072_li
Issue 329: CASE expression: data type problem is not detected.
@changelog_1060_li
@changelog_1073_li
Issue 311: File lock mode serialized: selecting the next value from a sequence didn't work after a pause, because the database thought this is a read-only operation.
@changelog_1061_h2
@changelog_1074_h2
Version 1.3.159 (2011-08-13)
@changelog_1062_li
@changelog_1075_li
Creating a temporary table with the option 'transactional' will now also create the indexes in transactional mode, if the indexes are included in the 'create table' statement as follows: "create local temporary table temp(id int primary key, name varchar, constraint x index(name)) transactional".
@changelog_1063_li
@changelog_1076_li
The database file size grows now 35%, but at most 256 MB at a time.
@changelog_1064_li
@changelog_1077_li
Improved error message on network configuration problems.
@changelog_1065_li
@changelog_1078_li
The build now support an offline build using ./build.sh offline. This will list the required dependencies if jar files are missing.
@changelog_1066_li
@changelog_1079_li
The BLOB / CLOB data was dropped a little bit before the table was dropped. This could cause "lob not found" errors when the process was killed while a table was dropped.
@changelog_1067_li
@changelog_1080_li
"group_concat(distinct ...)" did not work correctly in a view or subquery (the 'distinct' was lost). Example: select * from (select group_concat(distinct 1) from system_range(1, 3));
@changelog_1068_li
@changelog_1081_li
Database URLs can now be re-mapped to another URL using the system property "h2.urlMap", which points to a properties file with database URL mappings.
@changelog_1069_li
@changelog_1082_li
When using InputStream.skip, trying to read past the end of a BLOB failed with the exception "IO Exception: Missing lob entry: ..." [90028-...].
@changelog_1070_li
@changelog_1083_li
The in-memory file system "memFS:" now has limited support for directories.
@changelog_1071_li
@changelog_1084_li
To test recovery, append ;RECOVER_TEST=64 to the database URL. This will simulate an application crash after each 64 writes to the database file. A log file named databaseName.h2.db.log is created that lists the operations. The recovery is tested using an in-memory file system, that means it may require a larger heap setting.
@changelog_1072_li
@changelog_1085_li
Converting a hex string to a byte array is now faster.
@changelog_1073_li
@changelog_1086_li
The SQL statement "shutdown defrag" could corrupt the database if the process was killed while the shutdown was in progress. The same problem could occur when the database setting "defrag_always" was used.
@changelog_1074_h2
@changelog_1087_h2
Version 1.3.158 (2011-07-17)
@changelog_1075_li
@changelog_1088_li
Fulltext search (native): after re-opening the connection once the fulltext index was created, a transaction rollback did not roll back the modifications in the index.
@changelog_1076_li
@changelog_1089_li
Support for ROW_NUMBER() OVER() as an alias for ROWNUM() for compatibility with PostgreSQL and Apache Derby.
@changelog_1077_li
@changelog_1090_li
Issue 325: a deadlock in the fulltext search could occur if the connection that was used while initializing the fulltext search was later used to query the database. This was actually not only a problem for fulltext search, but also for other triggers that used the initializing connection later on.
@changelog_1078_li
@changelog_1091_li
DATABASE_TO_UPPER: when set to false, all identifier names (table names, column names) are case sensitive (except aggregate, built-in functions, data types, and keywords). This is for improved compatibility with MySQL and PostgreSQL.
@changelog_1079_li
@changelog_1092_li
When upgrading from an older 1.3.x version to version 1.3.157, when using BLOB or CLOB data, the database could only be opened once.
@changelog_1080_li
@changelog_1093_li
SUM on a boolean expression will now count the number of 'true' rows.
@changelog_1081_li
@changelog_1094_li
Simplified test cases using assertThrows(...).
@changelog_1082_li
@changelog_1095_li
A Java function that returns a result set that was generated using the provided connection could cause an internal error in some cases. Now such result sets are copied early on.
@changelog_1083_li
@changelog_1096_li
Data type RESULT_SET: information_schema.function_aliases returned type 0; now type -10 is returned (the same as Oracle: OracleTypes.CURSOR = -10).
@changelog_1084_li
@changelog_1097_li
Data type RESULT_SET: tables with columns of type RESULT_SET could be created, but no data could be persisted in this column.
@changelog_1085_li
@changelog_1098_li
H2 Console: improved system tray icon for Mac OS X (transparent background).
@changelog_1086_li
@changelog_1099_li
String.toUpperCase() was used a few places, which is problematic when using the Turkish locale. The method has been replaced with toUpperCase(Locale.ENGLISH) to solve such problems.
@changelog_1087_li
@changelog_1100_li
Shell tool: the built-in command "distinct" has been removed (use the SQL statements "show tables" / "show columns from tableName" instead). The result set formatting has been improved.
@changelog_1088_li
@changelog_1101_li
MERGE: if a unique key was violated (but not the primary key or the key columns of the merge itself), the wrong exception was thrown.
@changelog_1089_li
@changelog_1102_li
IBM DB2 and Apache Derby compatibility: support the pseudo-table SYSIBM.SYSDUMMY1.
@changelog_1090_li
@changelog_1103_li
ROWNUM() did not work in combination with IN(..). The following query did not work as expected: select * from (select rownum r from test) where r in (1, 2).
@changelog_1091_li
@changelog_1104_li
H2 Console autocomplete: the autocomplete feature didn't support quoted names.
@changelog_1092_li
@changelog_1105_li
It is now longer allowed to create an index on a CLOB or BLOB column (except for in-memory databases or indexes), because recovery doesn't work on such columns. Fulltext indexes on such column are still supported of course.
@changelog_1093_li
@changelog_1106_li
The PUBLIC schema could be renamed, which could result in a database that can't be opened normally. Now it can no longer be renamed. The schema INFORMATION_SCHEMA can also no longer be renamed.
@changelog_1094_li
@changelog_1107_li
Server mode: the problem with server and client using different timezones with different daylight saving rules has been solved (this only applies when both the client and the server use this or a newer version).
@changelog_1095_li
@changelog_1108_li
There is a new system property "h2.storeLocalTime" to avoid problems opening a database file in a timezone that has different daylight saving rules (see also below).
@changelog_1096_li
@changelog_1109_li
Date, time, and timestamp data type processing has been re-implemented. Time now supports nanoseconds resolution and now now supports a wider range (negative and large values), similar to PostgreSQL.
@changelog_1097_li
@changelog_1110_li
SQL statements with a non-breaking space were considered invalid.
@changelog_1098_h2
@changelog_1111_h2
Version 1.3.157 (2011-06-25)
@changelog_1099_li
@changelog_1112_li
The syntax for CREATE TABLE ... AS SELECT ... has been changed: options such as NOT PERSISTENT are now before the query (AS SELECT), because otherwise they might be interpreted as a part of the query.
@changelog_1100_li
@changelog_1113_li
With version 1.3.156, the DB2 mode could not be used with CLOB and BLOB data.
@changelog_1101_li
@changelog_1114_li
When upgrading from an older 1.3.x version to version 1.3.156, CLOB and BLOB data was lost in many cases.
@changelog_1102_li
@changelog_1115_li
The optimization for COUNT(..) on columns that are not nullable was also used for COUNT(DISTINCT ..), which is incorrect.
@changelog_1103_li
@changelog_1116_li
PgServer: non-admin users could not open a database.
@changelog_1104_li
@changelog_1117_li
Non-admin users could not open a database using a mode (MODE=xxx) if the database was already open, even if the mode matched.
@changelog_1105_li
@changelog_1118_li
The SQL state of the following exceptions has been changed: From 90009, 90010, 90011 to 22007: "Cannot parse DATE/TIME/TIMESTAMP constant ...".
@changelog_1106_li
@changelog_1119_li
There is a problem when opening a database file in a timezone that has different daylight saving rules: the time part of dates where the daylight saving doesn't match will differ. This is not a problem within regions that use the same rules (such as, within USA, or within Europe), even if the timezone itself is different. As a workaround, export the database to a SQL script using the old timezone, and create a new database in the new timezone. The same problem occurs when accessing a database over TCP/IP if the client and server timezones use different rules, if an old server or client is used.
@changelog_1107_h2
@changelog_1120_h2
Version 1.3.156 (2011-06-17)
@changelog_1108_li
@changelog_1121_li
Issue 323: NullPointerException when using IN(...) with a function table.
@changelog_1109_li
@changelog_1122_li
Clob.toString() and Blob.toString() now include the trace identifier.
@changelog_1110_li
@changelog_1123_li
The SQL parser silently ignored characters such as '^' or '\'. Now a syntax error is thrown.
@changelog_1111_li
@changelog_1124_li
ROUND(..) now also works with just one parameter.
@changelog_1112_li
@changelog_1125_li
Access to system tables is now more restrictive for non-admin users (the tables can be still listed, but some of the data is not included).
@changelog_1113_li
@changelog_1126_li
BLOB: InputStream.skip is now more efficient in embedded mode.
@changelog_1114_li
@changelog_1127_li
The default expression of a column may no longer reference the table, because a database with such a table couldn't be opened normally.
@changelog_1115_li
@changelog_1128_li
Referenced objects in check constraints could be dropped, which resulted in a database that can't be opened normally.
@changelog_1116_li
@changelog_1129_li
Improved Oracle compatibility for NVL2. Thanks again to litailang for the patch.
@changelog_1117_li
@changelog_1130_li
CSVREAD now supports the option 'preserveWhitespace'.
@changelog_1118_li
@changelog_1131_li
Recursive queries with many rows could throw an IndexOutOfBoundsException.
@changelog_1119_li
@changelog_1132_li
The auto-server mode can't be combined with an in-memory database. This invalid combination wasn't detected so far. Now trying to open a database in this way fails.
@changelog_1120_li
@changelog_1133_li
Improved performance for reading and writing date and time values.
@changelog_1121_li
@changelog_1134_li
Java functions: array component types are now preserved, so that a ResultSet.getObject() will return Integer[] if the Java functions returns Integer[]. Thanks to Noel Grandin for the patch. Component types are transferred over the network, but not persisted in the database file as of now.
@changelog_1122_li
@changelog_1135_li
Recover tool: the script generated by the recover tool didn't work if fulltext search was used, because the triggers were created before the primary keys.
@changelog_1123_li
@changelog_1136_li
Issue 321: the database does not expect XA rollback without XA prepare (an exception was unnecessarily written into the .trace.db file).
@changelog_1124_li
@changelog_1137_li
Read-only databases: some queries (such as distinct queries) tried to create temporary tables, which failed for read only databases.
@changelog_1125_li
@changelog_1138_li
This database no longer uses finalize() except for temporary files. The system property "h2.runFinalize" is no longer supported. Unclosed connections are still detected, but the opening stack trace is now collected only if connections are not closed repeatedly (starting with the second unclosed connection). To detect unclosed connections, a PhantomReference is used.
@changelog_1126_li
@changelog_1139_li
Issue 322: Left joins didn't work when used as subquery in the form clause.
@changelog_1127_li
@changelog_1140_li
A prepared statement if type CALL that returned a result set could throw a NullPointerException if executed multiple times.
@changelog_1128_li
@changelog_1141_li
The following built-in functions were marked as deterministic and therefore not re-executed when using in a prepared statement: LOCK_TIMEOUT, LINK_SCHEMA, CANCEL_SESSION, FILE_READ.
@changelog_1129_li
@changelog_1142_li
Count on a column that can not be null is now optimized to COUNT(*). Thanks a lot to Ross Judson for providing a patch and test case!
@changelog_1130_li
@changelog_1143_li
The following prepared statements are now cached as well: insert, update, delete, call, merge, and transactional commands.
@changelog_1131_li
@changelog_1144_li
The built-in connection pool is now a bit faster.
@changelog_1132_li
@changelog_1145_li
The scale was not set correctly in some cases when using CREATE TABLE AS SELECT if there was no explicit column definition.
@changelog_1133_li
@changelog_1146_li
When trying to connect to a server using TCP/IP failed, it will retry at most until the timeout. Before, it was the timeout multiplied with the retry count.
@changelog_1134_h2
@changelog_1147_h2
Version 1.3.155 (2011-05-27)
@changelog_1135_li
@changelog_1148_li
When altering a table with triggers, new triggers are created and initialized with a table name that ends with tableName_COPY_x_y. The plan is that this will not be required in future versions.
@changelog_1136_li
@changelog_1149_li
If some of the file system operations failed, System.gc() was called in a loop. Now it is called once at most.
@changelog_1137_li
@changelog_1150_li
Triggers (including the fulltext search) could throw the exception 'Unexpected code path' in Session.log.
@changelog_1138_li
@changelog_1151_li
CURRENT_TIMESTAMP() and so on now return the same value within a transaction.
@changelog_1139_li
@changelog_1152_li
The statement CALL no longer converts an ARRAY return value to a list of values. Now an ARRAY is returned.
@changelog_1140_li
@changelog_1153_li
VALUES is now supported as a standalone command and as a table source: SELECT * FROM (VALUES(1, 'Hello'), (2, 'World')) AS V;
@changelog_1141_li
@changelog_1154_li
TIMESTAMPADD is now an alias for DATEADD. Most SQL_TSI_ constants are now supported for for TIMESTAMPADD and TIMESTAMPDIFF (all except SQL_TSI_QUARTER and SQL_TSI_FRAC_SECOND).
@changelog_1142_li
@changelog_1155_li
Issue 313: NullPointerException in select query with a subquery or view.
@changelog_1143_li
@changelog_1156_li
Native fulltext search: the characters '<', '>', and '\' are now also whitespace characters. Also, the list of whitespace characters can be changed using FullText.setWhitespaceChars(conn, ...)
@changelog_1144_li
@changelog_1157_li
When reading from the classpath (for example read_file('classpath:logo.png')), now the content class loader is used if the resource can't be found otherwise.
@changelog_1145_li
@changelog_1158_li
The statement "script drop" create a script that couldn't be executed if a table contained a reference to a user defined function.
@changelog_1146_li
@changelog_1159_li
Opening a database with both multi-threaded mode and lock mode 0 (disable locking) was possible (but only once), even thought it does not work properly. Now it is no longer allowed.
@changelog_1147_li
@changelog_1160_li
LOB objects are now deleted (and the empty space is reused) when the transaction is committed. So far, the space wasn't re-used until the connection was closed.
@changelog_1148_li
@changelog_1161_li
SCRIPT DROP did not use the cascade option for table, which would cause problems if a view was dropped before a table it depends on. Now the cascade option is used.
@changelog_1149_li
@changelog_1162_li
The query plan of queries with subqueries that contain nested joins was wrong. This could result in syntax exceptions for correct queries. Example: select 1 from (select 2 from ((test t1 inner join test t2 on t1.id=t2.id) inner join test t3 on t3.id=t1.id)) x;
@changelog_1150_li
@changelog_1163_li
DatabaseEventListener.init was called with a null url when using the server mode.
@changelog_1151_li
@changelog_1164_li
Support for the function LN (an alias for LOG).
@changelog_1152_li
@changelog_1165_li
Support for the function CEIL (an alias for CEILING).
@changelog_1153_li
@changelog_1166_li
Issue 315: Access to LOBs could cause a Java level deadlock.
@changelog_1154_li
@changelog_1167_li
Support for the ICU4J collator.
@changelog_1155_li
@changelog_1168_li
Improved Oracle compatibility: support for NVL2. Thanks to litailang for the patch!
@changelog_1156_li
@changelog_1169_li
Improved PostgreSQL compatibility: support for RANDOM() in addition to RAND().
@changelog_1157_li
@changelog_1170_li
There was a classloader memory leak problem because a class contained a static references to an exception (including stack trace).
@changelog_1158_li
@changelog_1171_li
Split file system: truncating a file now deletes the parts in reverse order, so that the file list is consistent if the process is interrupted while truncating.
@changelog_1159_li
@changelog_1172_li
The H2 JDBC client can now be used in an unsigned Applet. The problem was that System.getProperty throws a SecurityException, which is now ignored.
@changelog_1160_li
@changelog_1173_li
The condition "in(select ...)" did not work correctly if the subquery could not be converted to a "distinct" query, as in: "select * from dual where x in (select x from dual group by x order by max(x))". Now the subquery needs to be made distinct manually if this optimization is needed.
@changelog_1161_li
@changelog_1174_li
In the last release, the error code for "Wrong user name or password" was still 08004 instead of 28000, which resulted in the wrong error message.
@changelog_1162_li
@changelog_1175_li
In some cases, creating a new table or altering an existing table threw the exception: Unique index or primary key violation: "PRIMARY KEY ON """".PAGE_INDEX".
@changelog_1163_li
@changelog_1176_li
The Shell tool no longer supports the built-in command "show", because it is a legal SQL statement for H2 and MySQL. However, the "describe" command is still supported, and now lists all tables if called without parameter.
@changelog_1164_li
@changelog_1177_li
The sorted insert mode (as in "insert into ... direct sorted select") did not work for not-persisted tables in a persisted database. It threw a ClassCastException.
@changelog_1165_li
@changelog_1178_li
Issue 308: Statement.getGeneratedKeys() now returns an empty result set if no key was generated.
@changelog_1166_li
@changelog_1179_li
The h2small.jar (created with build jarSmall) included the Android API. This has been removed, shrinking the jar file by 21 KB.
@changelog_1167_li
@changelog_1180_li
When creating a table, the precision must now be at least as large as the scale.
@changelog_1168_li
@changelog_1181_li
Support for Java 1.3 and Java 1.4 has been removed.
@changelog_1169_li
@changelog_1182_li
Improved error message for syntax error: the list of expected tokens was sometimes not set correctly.
@changelog_1170_li
@changelog_1183_li
Database file growth can now be limited using the database setting PAGE_STORE_MAX_GROWTH. Slower growth may slow down operation, but speed up closing database.
@changelog_1171_li
@changelog_1184_li
A read only database with writable linked tables could lead to a DATABASE_IS_READ_ONLY (90097) error. This is fixed now.
@changelog_1172_h2
@changelog_1185_h2
Version 1.3.154 (2011-04-04)
@changelog_1173_li
@changelog_1186_li
The SQL state of the following exceptions has been changed: From 90005 to 22001: "Value too long for column ...: ...". From 90039 to 22003: "The value is too large for the precision ..." is merged with "Numeric value out of range". From 90110 to 22003: "... out of range" is merged with "Numeric value out of range". From 90021 to 22018: "Data conversion error converting ...". From 90006 to 23502: "NULL not allowed for column ...". From 23003 to 23503: "Referential integrity constraint violation: ...". From 23001 to 23505: "Unique index or primary key violation: ...". From 23002 to 23506: "Referential integrity constraint violation: ...". From 90056 to 23507: "No default value is set for column ...". From 23000 to 23513: "Check constraint violation: ...". From 08004 to 28000: "Wrong user name or password". From 90051 to 57014: "Statement was canceled or the session timed out".
@changelog_1174_li
@changelog_1187_li
The H2 Console now detects unsupported command line options. (In the future, it will be combined with the Server tool.)
@changelog_1175_li
@changelog_1188_li
MySQL compatibility: SHOW COLUMN FOR schemaName.columnName.
@changelog_1176_li
@changelog_1189_li
DatabaseMetaData.getCrossReference now also lists the name of the primary index (PK_NAME).
@changelog_1177_li
@changelog_1190_li
If the database contained many CLOB or BLOB values, then closing a connection was very slow. Reason: was that when closing a connection, the temporary CLOB and BLOB values for this connection were removed, but there was no index on this column. For existing databases with many CLOB and BLOB values, creating the index may take a few seconds. The index is added to existing databases automatically.
@changelog_1178_li
@changelog_1191_li
If a CLOB or BLOB was copied into the same table using INSERT INTO X ... SELECT ... FROM X, and then the original row was deleted, then the copied value was also deleted. This could also result in an ArrayIndexOutOfBoundsException on checkpoint or when closing the database.
@changelog_1179_li
@changelog_1192_li
Improved performance (up to 10%) due to changed synchronization in the page store.
@changelog_1180_li
@changelog_1193_li
Reading a resource from the classpath didn't work if there was a leading slash (classpath:/org/...). Now resources can be loaded with or without leading slash.
@changelog_1181_li
@changelog_1194_li
Support INSERT INTO TEST SET ID = 1, NAME = 'World' (MySQL compatibility).
@changelog_1182_li
@changelog_1195_li
Issue 304: The condition [NOT] IN (SELECT ...) could throw the exception "Unexpected code path" if the subquery contained ORDER BY.
@changelog_1183_li
@changelog_1196_li
ALTER TABLE ALTER ADD / REMOVE /ALTER COLUMN dropped some dependent objects (access rights, triggers) of views that depend on the modified table.
@changelog_1184_li
@changelog_1197_li
CREATE OR REPLACE VIEW dropped some dependent objects (access rights, triggers) if the view already existed before.
@changelog_1185_li
@changelog_1198_li
New aggregate function HISTOGRAM to calculate the histogram. The plan is to use this function is only used internally when running ANALYZE to generate the histogram that is then used by the query optimizer.
@changelog_1186_li
@changelog_1199_li
New system function TRUNCATE_VALUE to truncate a value to the required precision. This is the same as for CAST, but without changing the data type, and support for truncating decimal values. (The main use case for this function is to build a histogram of the truncated values). Now BINARY, BLOB, and CLOB can be truncated / cast efficiently as well.
@changelog_1187_li
@changelog_1200_li
The precision of an ARRAY value is now the sum of the precision of all elements, and result set values have the precision Integer.MAX_VALUE.
@changelog_1188_li
@changelog_1201_li
CAST(x AS VARCHAR_IGNORECASE(y) / CHAR(y)) returned a VARCHAR if the new precision was lower than the old precision.
@changelog_1189_li
@changelog_1202_li
SHUTDOWN DEFRAG didn't defragment the database completely if there was a unique hash index for a memory table.
@changelog_1190_li
@changelog_1203_li
There were some smaller changes in the encrypting file system (work in progress).
@changelog_1191_li
@changelog_1204_li
Some time and timezone functions didn't support years before 1.
@changelog_1192_h2
@changelog_1205_h2
Version 1.3.153 (2011-03-14)
@changelog_1193_li
@changelog_1206_li
Issue 294: The Maven source bundle now contains a manifest file that allows Eclipse to automatically attach the source code (if Maven is used).
@changelog_1194_li
@changelog_1207_li
A query with an explicit LIMIT 0 will now return no rows (so far it meant no limit), which is compatible with PostgreSQL and MySQL. A negative limit value, (as well as LIMIT NULL) mean no limit (so far a negative limit meant a limit of one row). There were similar problems with OFFSET.
@changelog_1195_li
@changelog_1208_li
A new encrypting file system has been implemented. It is currently experimental, and not included in the main jar file. The idea is to allow encrypting all files, not just database files. Also implemented is a simple file system shell tool. At some point, this might replace the Backup, ChangeFileEncryption, DeleteDbFiles, and Restore tools.
@changelog_1196_li
@changelog_1209_li
Lob in database: storing lob objects was not correctly synchronized. This was specially a problem when using Connection.createBlob() / createClob().
@changelog_1197_li
@changelog_1210_li
Updated the license page (thanks a lot to Abe to help me with this).
@changelog_1198_li
@changelog_1211_li
Support for database paths with '\' on non-Windows systems.
@changelog_1199_li
@changelog_1212_li
The NIO cleaner hack wasn't working as expected, because the clear method was called instead of the clean method. This has been fixed. Please note this hack is not enabled by default, to try it you need to set the system property "h2.nioCleanerHack" to true.
@changelog_1200_li
@changelog_1213_li
Improved MS SQL Server and MySQL compatibility: support DELETE with TOP or LIMIT.
@changelog_1201_li
@changelog_1214_li
Support for COSH, SINH, and TANH functions.
@changelog_1202_li
@changelog_1215_li
Support for the % operator (modulo) thanks to Noel Grandin.
@changelog_1203_li
@changelog_1216_li
Issue 288: Some right outer join queries failed to produce the correct result or threw exceptions such as "column x must be in the group by list".
@changelog_1204_li
@changelog_1217_li
Some right outer joins with invalid column referenced (typos) threw a NullPointerException instead of "column not found" exception.
@changelog_1205_li
@changelog_1218_li
New database setting EARLY_FILTER to allow table implementations to apply filter conditions early on.
@changelog_1206_li
@changelog_1219_li
Cluster: in a two node cluster, if cluster node stopped, and autocommit was enabled, then changes on the remaining cluster node didn't get committed automatically.
@changelog_1207_li
@changelog_1220_li
Issue 291: Allow org.h2.value.Value as FUNCTION ALIAS params and return value.
@changelog_1208_li
@changelog_1221_li
Issue 265: Linked tables: auto-reconnect if the backside connection is lost (workaround for the MySQL problem that disconnects after 8 hours of inactivity).
@changelog_1209_li
@changelog_1222_li
Linked tables: the index conditions was sometimes not used when querying the remote database.
@changelog_1210_li
@changelog_1223_li
Issue 294: OSGi: the versions were missing in manifest package exports.
@changelog_1211_li
@changelog_1224_li
The option -baseDir didn't work with symbolic links.
@changelog_1212_li
@changelog_1225_li
Support for ALTER TABLE ADD COLUMN IF NOT EXISTS.
@changelog_1213_li
@changelog_1226_li
Database-level connection settings could only be set in the database URL, but not using the Properties parameter of DriverManager.getConnection(String url, Properties info).
@changelog_1214_h2
@changelog_1227_h2
Version 1.3.152 Beta (2011-03-01)
@changelog_1215_li
@changelog_1228_li
H2 Console: browser detection didn't work for Mac OS X with OpenJDK 1.7.
@changelog_1216_li
@changelog_1229_li
The double or float value -0.0 is now distinct from 0.0 (as in Java).
@changelog_1217_li
@changelog_1230_li
TCP and PG server: if the default port is already in use, the services are now started on another free port (unless the port is explicitly set). This allows to start the H2 Console even if the TCP or PG servers are already running.
@changelog_1218_li
@changelog_1231_li
LIKE didn't use an index unless the right hand side was a literal or parameter. Now an index is used for LIKE CONCAT(?, '%').
@changelog_1219_li
@changelog_1232_li
Array literals with zero or one element were not be parsed correctly. Now trailing commas are ignored (as in Java). Expressions of the form '(1)' are still parsed as the value 1. An empty array is '()'. An array with one element must contain a comma to be parsed as an array, as in '(1,)'.
@changelog_1220_li
@changelog_1233_li
Issue 290: Conditions using subqueries were sometimes evaluated before much simpler conditions, which was very bad for performance. This includes subqueries returning a value, EXISTS subqueries, and IN(SELECT ..) subqueries.
@changelog_1221_li
@changelog_1234_li
Issue 288: Some queries with right outer joins or nested joins could throw a NullPointerException.
@changelog_1222_li
@changelog_1235_li
The database can now be compiled with Java 7. Stub methods for the new JDBC 4.1 methods have been implemented, but the new features can't be used yet.
@changelog_1223_li
@changelog_1236_li
Issue 289: Railroads (BNF) for "Column Definition" was incorrect.
@changelog_1224_li
@changelog_1237_li
Issue 287: Railroads (BNF) is not readable for certain web-browser configurations (dark background).
@changelog_1225_li
@changelog_1238_li
Executing a CSVREAD query multiple times could result in an exception if the data was changed on disk.
@changelog_1226_li
@changelog_1239_li
SQL railroad diagrams: improved images for people with black background settings.
@changelog_1227_li
@changelog_1240_li
Build-in documentation search: improved results if searching for multiple words.
@changelog_1228_li
@changelog_1241_li
DatabaseMetaData.getColumns: there is a typo in the JDBC specification, so that the column #19 is named SCOPE_CATLOG instead of SCOPE_CATALOG. For compatibility with the specification, a new column #24 named SCOPE_CATLOG is added. This typo is fixed in the JDBC 4.1 specification. Please note that MySQL only supports SCOPE_CATALOG, while other databases only support SCOPE_CATLOG.
@changelog_1229_li
@changelog_1242_li
Build: jar files are now downloaded using Maven if possible (and cached in the local Maven repository). Unfortunately, in many cases this will download more data from the Maven repository.
@changelog_1230_li
@changelog_1243_li
JaQu has been improved a lot thanks to the new committer James Moger.
@changelog_1231_li
@changelog_1244_li
New sample application that shows how to use "instead of" triggers to support updatable views.
@changelog_1232_li
@changelog_1245_li
H2 Console: opening a MS SQL Server database is now faster. Also, listing the database meta data sometimes resulted in an exception.
@changelog_1233_li
@changelog_1246_li
Linked tables / MS SQL Server: if the tables were created in mixed case in MS SQL Server, then the identifiers in the linked tables were case sensitive (in H2).
@changelog_1234_li
@changelog_1247_li
MVCC: the probability of a lock timeout is now lower if multiple threads try to update the same rows.
@changelog_1235_li
@changelog_1248_li
Building only the documentation (without compiling all classes) didn't work, specially: ./build.sh clean javadocImpl.
@changelog_1236_li
@changelog_1249_li
Documentation on how data is stored internally and how indexes work (in the performance section).
@changelog_1237_li
@changelog_1250_li
Some people reported NullPointerException in FileObjectDiskMapped. The most likely explanation is that multiple threads access the same object at the same time. Therefore, the public methods in this class are now synchronized.
@changelog_1238_li
@changelog_1251_li
Improved error detection when starting a server with invalid arguments, such as "-tcpPort=9091" or "-tcpPort 9091" (as one parameter) instead of "-tcpPort", "9091".
@changelog_1239_li
@changelog_1252_li
The function STRINGDECODE ignored characters after a non-escaped double quote. This is no longer the case.
@changelog_1240_li
@changelog_1253_li
The new CSV option feature introduced in version 1.3.150 didn't support spaces. Now the escape mechanism is changed to support it.
@changelog_1241_li
@changelog_1254_li
The pseudo-column "_ROWID_" now supports insert, update, and merge (only enabled for version 1.3.x).
@changelog_1242_li
@changelog_1255_li
Deleting rows in the trigger table inside a trigger could result in a NullPointerException.
@changelog_1243_h2
@changelog_1256_h2
Version 1.3.151 Beta (2011-02-12)
@changelog_1244_li
@changelog_1257_li
Server: it was possible to open a database outside of the base URL (if one was set). The test case was broken.
@changelog_1245_li
@changelog_1258_li
The H2 Console tool now supports a database URL as a command line option.
@changelog_1246_li
@changelog_1259_li
Clob.getSubString and Blob.getBytes are now up to 3 times faster.
@changelog_1247_li
@changelog_1260_li
New database setting DEFAULT_CONNECTION (disabled by default) to support DriverManager.getConnection("jdbc:default:connection"). Please note the Oracle JDBC driver will try to resolve this database URL if it is loaded before the H2 driver.
@changelog_1248_li
@changelog_1261_li
JaQu: the static map Db.TOKENS was not synchronized.
@changelog_1249_li
@changelog_1262_li
DatabaseMetaData.getProcedureColumns returned the wrong data (it also returned the Connection parameter if there was any).
@changelog_1250_li
@changelog_1263_li
Issue 284: If the query cache was used (enabled by default in version 1.3.x), and multiple threads used the same connection, and the same query but different prepared statements, parameters of one prepared statement could be overwritten by another.
@changelog_1251_li
@changelog_1264_li
If the query cache was used (enabled by default in version 1.3.x), parameters of re-used queries were not reset in prepared statements.
@changelog_1252_li
@changelog_1265_li
CallableStatement: the first row of the result set was skipped when using CallableStatement.execute().
@changelog_1253_li
@changelog_1266_li
Batch update exceptions now include the root cause and all chained exceptions (getNextException).
@changelog_1254_li
@changelog_1267_li
Reading a large result set with a BLOB or CLOB column could throw a NullPointerException.
@changelog_1255_li
@changelog_1268_li
Support for the MS SQL Server syntax VARCHAR(MAX).
@changelog_1256_li
@changelog_1269_li
The Recover tool could print "/ by zero" on an empty database.
@changelog_1257_li
@changelog_1270_li
For tables without a single column primary key of type INT or LONG, the unique row id had gaps, which didn't look nice.
@changelog_1258_li
@changelog_1271_li
Each table now has a pseudo-column "_ROWID_" to get the unique row id (only enabled for version 1.3.x).
@changelog_1259_li
@changelog_1272_li
User defined functions can now have parameters of any class. Values of type OTHER (or OBJECT or JAVA_OBJECT) are automatically de-serialized in that case.
@changelog_1260_li
@changelog_1273_li
Linked tables: for NUMERIC column, Oracle reports precision 0 and scale -127. A workaround has been implemented (the same as for DECIMAL columns in version 1.3.150).
@changelog_1261_li
@changelog_1274_li
Issue 279: Auto-Server mode: unclear error message when trying to connect using AUTO_SERVER if the database is already open without the flag (Connection is broken: "null").
@changelog_1262_li
@changelog_1275_li
Issue 238: Can drop a column that has a single-column constraint.
@changelog_1263_h2
@changelog_1276_h2
Version 1.3.150 Beta (2011-01-28)
@changelog_1264_li
@changelog_1277_li
CSVREAD / CSVWRITE: instead of setting the options one by one, all options can be combined into a space separated key-value pairs.
@changelog_1265_li
@changelog_1278_li
CSVREAD / CSV tool: there is a new option "lineCommentCharacter" to set or disable line comments. For H2 version 1.2, the default is '#' (as before). For H2 version 1.3, line comments are disabled by default.
@changelog_1266_li
@changelog_1279_li
Issue 277: JaQu didn't correctly convert a CLOB column to a String.
@changelog_1267_li
@changelog_1280_li
./build.sh testNetwork could block if there was a network configuration problem.
@changelog_1268_li
@changelog_1281_li
Reading input streams from the classpath is now supported. Example: RUNSCRIPT FROM 'classpath:org/h2/samples/newsfeed.sql'.
@changelog_1269_li
@changelog_1282_li
PreparedStatement.toString() now includes the parameter values in a human readable format.
@changelog_1270_li
@changelog_1283_li
New database setting OPTIMIZE_IN_SELECT (enabled by default for version 1.3.x). If enabled, IN(SELECT...) conditions are faster if there are many rows in the table or subquery.
@changelog_1271_li
@changelog_1284_li
Linked tables: for DECIMAL column, Oracle reports precision 0 and scale -127. A workaround has been implemented.
@changelog_1272_li
@changelog_1285_li
TCP Server: a base directory with a prefix with a database name with prefix didn't work as expected (this only applies to non-disk and wrapped file systems).
@changelog_1273_li
@changelog_1286_li
Version 1.3: when re-running the same query so that the previous result was re-used, and if the result set was large so that it was stored externally (in a temp file or in a temp table), then reading rows from both result sets resulted in an exception or wrong behavior.
@changelog_1274_li
@changelog_1287_li
A new sample application that shows how to create a read-only database in a zip file where the database file is split into multiple smaller parts.
@changelog_1275_li
@changelog_1288_li
The Backup tool now supports compressing all files in a given directory.
@changelog_1276_li
@changelog_1289_li
H2 Console: the special syntax @list and @meta can not be combined.
@changelog_1277_li
@changelog_1290_li
The wrong error message was thrown when trying to open a database where the database file could not be read for some reason (for example because the split file system was used, and the file was split at the wrong position).
@changelog_1278_li
@changelog_1291_li
There was a memory leak in the trace system. Opening and closing many connections could run out of memory.
@changelog_1279_li
@changelog_1292_li
The scan-resistant cache type "TQ" (two queue) is again available. To use it, append ;CACHE_TYPE=TQ to the database URL.
@changelog_1280_h2
@changelog_1293_h2
Version 1.3.149 Beta (2011-01-07)
@changelog_1281_li
@changelog_1294_li
Lob in database: after the process was killed while adding a lob, inserting a lob could throw an exception (primary key violation in LOB_MAP).
@changelog_1282_li
@changelog_1295_li
Server tool: the tcpShutdown feature now also stops other servers (web server and PostgreSQL server).
@changelog_1283_li
@changelog_1296_li
Server tool: the tcpShutdown url must now end with the port if the port is used.
@changelog_1284_li
@changelog_1297_li
Server tool: when starting one service fails, the started services are now stopped.
@changelog_1285_li
@changelog_1298_li
Multi-version concurrency: SELECT ... FOR UPDATE threw a "concurrent update" exception immediately instead of a "lock timeout" exception after the set lock timeout if the row was already locked by another connection.
@changelog_1286_li
@changelog_1299_li
Translation: the H2 Console and error messages have been translated to Czech by Hannibal (http://hannibal.cestiny.cz/). Thanks a lot!
@changelog_1287_li
@changelog_1300_li
When the system property h2.lobInDatabase is set, reading a BLOB is a bit faster because the length is not read.
@changelog_1288_li
@changelog_1301_li
The SimpleResultSet now has a feature to not close the result set after reading the last row.
@changelog_1289_li
@changelog_1302_li
Native fulltext search: the ignore list doesn't need to be all uppercase now.
@changelog_1290_li
@changelog_1303_li
Improved statistics output in the Recover tool.
@changelog_1291_li
@changelog_1304_li
Issue 269: GROUP BY queries with a column or having clause that contains IN(SELECT ...) could return the wrong values. Example: SELECT X IN(SELECT Y) FROM Z GROUP BY X.
@changelog_1292_li
@changelog_1305_li
After closing a database, the writer thread will stop almost immediately (instead of after at most 100 ms). This should avoid error messages in the Tomcat log file after a shutdown.
@changelog_1293_li
@changelog_1306_li
Issue 271: ResultSet.getConcurrency() did not correctly detect that the result set is not updatable.
@changelog_1294_li
@changelog_1307_li
The SLF4J 1.6 API is now used by default (this should not have any user visible effect).
@changelog_1295_li
@changelog_1308_li
The org.h2.tools.Console no longer calls System.exit on shutdown (this should not have any user visible effect, but should allow to integrate the tool easier into other applications).
@changelog_1296_li
@changelog_1309_li
Improved date / time arithmetics. Adding and subtracting a floating point value from a date or timestamp is now supported.
@changelog_1297_li
@changelog_1310_li
When creating a BLOB with in InputStream or a CLOB with a Reader, and the InputStream or Reader threw an non-IOException, then the LOB storage was broken when storing LOBs in the database.
@changelog_1298_li
@changelog_1311_li
EXPLAIN SELECT didn't include the sample size if one was set.
@changelog_1299_li
@changelog_1312_li
Improved EXPLAIN plan formatting and documentation.
@changelog_1300_li
@changelog_1313_li
Issue 266: Domains: a NOT NULL clause in a domain definition ignored.
@changelog_1301_li
@changelog_1314_li
More accurate calculation of variance and standard deviation for large number of samples with low variance (now using Welford's method).
@changelog_1302_li
@changelog_1315_li
Server: CLOB data with unicode characters between character code 0xd800 and 0xdfff were not transferred correctly. In many cases, the thread was stuck afterwards.
@changelog_1303_li
@changelog_1316_li
Issue 264: the Hibernate dialect in src/tools was removed because it is outdated.
@changelog_1304_li
@changelog_1317_li
Cache size limit could be exceeded for certain queries, leading to an OutOfMemoryError in some cases. Fixed.
@changelog_1305_h2
@changelog_1318_h2
Version 1.3.148 Beta (2010-12-12)
@changelog_1306_li
@changelog_1319_li
The built-in connection pool was simplified a bit. The dispose() method no longer throws an exception (it only logs it).
@changelog_1307_li
@changelog_1320_li
The database upgrade (to upgrade from H2 version 1.1.x) has been simplified.
@changelog_1308_li
@changelog_1321_li
The feature to log all errors (system properties h2.logAllErrors and h2.logAllErrorsFile) has been removed.
@changelog_1309_li
@changelog_1322_li
When starting the H2 Console, the properties file can now be completely disabled.
@changelog_1310_li
@changelog_1323_li
Server.openBrowser no longer writes to System.out directly if opening the URL failed.
@changelog_1311_li
@changelog_1324_li
The INSERT optimizations (INSERT ... DIRECT SORTED SELECT) were not parsed correctly when using a column list.
@changelog_1312_li
@changelog_1325_li
H2 Console: the tables and columns are now listed for SQLite as well.
@changelog_1313_li
@changelog_1326_li
H2 Console: improved autocomplete feature (also simplified the source code for this feature).
@changelog_1314_li
@changelog_1327_li
Issue 260: the DbStarter servlet context listener now starts the server before opening a connection, so that connecting using the server mode works.
@changelog_1315_li
@changelog_1328_li
The Shell tool can now enable, disable, and display the current autocommit mode.
@changelog_1316_li
@changelog_1329_li
Issue 259: there is a limitation in the cluster mode: The SQL statement SET AUTOCOMMIT FALSE doesn't work. To disable autocommit, the method Connection.setAutoCommit(false) needs to be called. This is now documented.
@changelog_1317_li
@changelog_1330_li
Connection pool / DataSource: a NullPointerException was thrown when using a database URL that doesn't start with "jdbc:h2:".
@changelog_1318_li
@changelog_1331_li
Using the java.sql.Blob or java.sql.Clob interfaces could throw the wrong exception after the object was closed.
@changelog_1319_li
@changelog_1332_li
LOB: in server mode, if the feature "LOBs in database" is disabled, the temporary files are now created in the temp directory (the same as when "LOBs in database" is enabled).
@changelog_1320_h2
@changelog_1333_h2
Version 1.2.147 (2010-11-21)
@changelog_1321_li
@changelog_1334_li
H2 Console: the server properties directory can now be set on the command line using java ... -properties <directory>. Issue 159.
@changelog_1322_li
@changelog_1335_li
New feature INSERT INTO ... DIRECT SELECT, mainly to speed up loading tables from a CSV file. When using DIRECT, then the results from the query are directly applied in the target table without any intermediate step (without temporary file).
@changelog_1323_li
@changelog_1336_li
Converting binary data to UUID was incorrect when the converting more than 31 bytes. Now always the first 16 bytes are used.
@changelog_1324_li
@changelog_1337_li
Improved date / time arithmetics. Now supported are multiplying and dividing a time with / by a number, adding and subtracting a time to / from a time or date, subtracting a time or timestamp from a timestamp.
@changelog_1325_li
@changelog_1338_li
The Ant build script has been removed because it is no longer up to date.
@changelog_1326_li
@changelog_1339_li
Nested outer joins without brackets were not working as expected. Example: select * from a inner join b inner join c on c.id = b.id on b.id = a.id;
@changelog_1327_li
@changelog_1340_li
JMX (the Java management extension) is now supported. Issue 253.
@changelog_1328_li
@changelog_1341_li
Creating a comment on a column didn't work if the schema name was equal the database name.
@changelog_1329_li
@changelog_1342_li
When using multi-version concurrency, re-running a prepared statement with the same parameters would sometimes give the same result even if another connection committed a change (the previous result was sometimes re-used incorrectly).
@changelog_1330_li
@changelog_1343_li
When using SELECT_FOR_UPDATE_MVCC (lock only the selected rows when using MVCC), the selected rows were sometimes not locked correctly.
@changelog_1331_li
@changelog_1344_li
When using Lucene 3, the index files were not always closed when the database was closed.
@changelog_1332_li
@changelog_1345_li
Concurrently preparing a statement and altering a table could throw a table not found exception.
@changelog_1333_li
@changelog_1346_li
When concurrently preparing many statements with a subquery, in some cases the query didn't run (Column "..." must be in the GROUP BY list).
@changelog_1334_li
@changelog_1347_li
CallableStatement: now the syntax "{? = CALL...}" is supported as well.
@changelog_1335_li
@changelog_1348_li
Lob in databases: two small BLOB or CLOB values were always considered equal. This also affected unique indexes.
@changelog_1336_li
@changelog_1349_li
The shutdown hook is (re-) enabled by default even for H2 version 1.3.x.
@changelog_1337_li
@changelog_1350_li
When creating a database from a recovery script, the same user can now be used (CREATE USER now always includes IF EXISTS).
@changelog_1338_li
@changelog_1351_li
The H2 Console now prints a status message if started with parameters.
@changelog_1339_h2
@changelog_1352_h2
Version 1.3.146 Beta (2010-11-08)
@changelog_1340_li
@changelog_1353_li
This is a beta version. The next version will be 1.2.147. The differences between 1.2.x and 1.3.x are:
@changelog_1341_li
@changelog_1354_li
In version 1.3.x, h2.lobInDatabase (store CLOB and BLOB in the database file) is enabled by default.
@changelog_1342_li
@changelog_1355_li
In version 1.3.x, ANALYZE_AUTO is 2000 (automatic ANALYZE).
@changelog_1343_li
@changelog_1356_li
In version 1.3.x, DB_CLOSE_ON_EXIT (the shutdown hook) is disabled by default.
@changelog_1344_li
@changelog_1357_li
In version 1.3.x, DROP_RESTRICT (default action for DROP is RESTRICT) is enabled.
@changelog_1345_li
@changelog_1358_li
In version 1.3.x, FUNCTIONS_IN_SCHEMA (allow to store functions in a schema) is enabled.
@changelog_1346_li
@changelog_1359_li
In version 1.3.x, LARGE_TRANSACTIONS (support for very large transactions) is enabled. Changes to tables without a primary key can be buffered to disk.
@changelog_1347_li
@changelog_1360_li
In version 1.3.x, MAX_MEMORY_ROWS_DISTINCT is set to a 10000.
@changelog_1348_li
@changelog_1361_li
In version 1.3.x, NESTED_JOINS (nested joins and right outer joins) is enabled.
@changelog_1349_li
@changelog_1362_li
In version 1.3.x, OPTIMIZE_INSERT_FROM_SELECT (speed up CREATE TABLE ... AS SELECT) is enabled.
@changelog_1350_li
@changelog_1363_li
In version 1.3.x, OPTIMIZE_OR (convert OR conditions to IN(..) if possible) is enabled.
@changelog_1351_li
@changelog_1364_li
In version 1.3.x, QUERY_CACHE_SIZE is enabled.
@changelog_1352_li
@changelog_1365_li
In version 1.3.x, SELECT_FOR_UPDATE_MVCC (MVCC and SELECT FOR UPDATE) is enabled.
@changelog_1353_li
@changelog_1366_li
In version 1.3.x, RUNSCRIPT and SCRIPT (commands and tools), use UTF-8 by default (ScriptCommand.charset).
@changelog_1354_li
@changelog_1367_li
In version 1.3.x, Lucene 3 is used by default. Issue 147.
@changelog_1355_li
@changelog_1368_li
When the system property h2.lobInDatabase is set, the lob tables were always created when closing the database, even if the tables were not needed.
@changelog_1356_li
@changelog_1369_li
In the MySQL mode, SHOW TABLES didn't work, and meta data tables were not case insensitive. Updatable result sets didn't work as expected. Issue 249.
@changelog_1357_li
@changelog_1370_li
Connection-created Clob and Blob objects can now be filled using Clob.setCharacterStream(1), Clob.setString(1, s), Blob.setBytes(1, x), Blob.setBinaryStream(1). Issue 235.
@changelog_1358_li
@changelog_1371_li
Trying to convert a very small CLOB to a BLOB or a very small CLOB to a BLOB threw a NullPointerException.
@changelog_1359_li
@changelog_1372_li
INFORMATION_SCHEMA.SETTINGS: now the current page count can be queried using select * from information_schema.settings where name = 'info.PAGE_COUNT'.
@changelog_1360_li
@changelog_1373_li
For an invalid value exception, the parameter name and value was switched in some cases.
@changelog_1361_li
@changelog_1374_li
When using trace level 3, opening a database no longer prints there is a EOFException (because that is the expected behavior).
@changelog_1362_li
@changelog_1375_li
CALL calling a Java function with return type ResultSet and return value null threw a ClassCastException.
@changelog_1363_li
@changelog_1376_li
SELECT ... FROM CSVREAD no longer creates a temporary file. Some large imports are now twice as fast.
@changelog_1364_h2
@changelog_1377_h2
Version 1.2.145 (2010-11-02)
@changelog_1365_li
@changelog_1378_li
A new String cache is now created at most once every 5 second, so that out of memory exceptions are not artificially delayed.
@changelog_1366_li
@changelog_1379_li
After closing a database, the writer thread will stop after 100 ms at the latest (instead of 1 second).
@changelog_1367_li
@changelog_1380_li
Opening a large database could fail in theory if the process was killed and then not fully compacted (because the unique transaction log key was re-used).
@changelog_1368_li
@changelog_1381_li
Views now store the schema for Java functions if "functions in schemas" is enabled (system property h2.functionsInSchema).
@changelog_1369_li
@changelog_1382_li
Improved error message if the LOB files are already deleted on the client side.
@changelog_1370_li
@changelog_1383_li
Closing a Statement or PreparedStatement at the same time as executing a statement could throw a strange exception. Issue 241.
@changelog_1371_li
@changelog_1384_li
The Recover tool did not work with compressed lob files (set compress_lob lzf). Also, sometimes the Recover tool was very slow, specially using a 64-bit JVM, because it tried to de-compress lob files even if they were not compressed (which could allocate a lot of memory).
@changelog_1372_li
@changelog_1385_li
H2 Console: webAllowOthers and webSSL were swapped if they didn't exist in the properties file. Issue 244.
@changelog_1373_li
@changelog_1386_li
When the system property h2.lobInDatabase is set, CREATE TABLE ... AS SELECT with a LOB column did not always work.
@changelog_1374_li
@changelog_1387_li
Some system properties are not supported any longer, because they can already be set in the database URL. The constants are: CACHE_SIZE_DEFAULT, CACHE_TYPE_DEFAULT, DEFAULT_LOCK_MODE, LOCK_MODE_READ_COMMITTED, DEFAULT_MAX_LENGTH_INPLACE_LOB, DEFAULT_MAX_LENGTH_INPLACE_LOB2, DEFAULT_MAX_MEMORY_UNDO, DEFAULT_MAX_OPERATION_MEMORY, DEFAULT_PAGE_SIZE, DEFAULT_RESULT_SET_CONCURRENCY, MIN_WRITE_DELAY.
@changelog_1375_li
@changelog_1388_li
Various system properties have been replaced with database level settings: ALIAS_COLUMN_NAME, ANALYZE_AUTO, ANALYZE_SAMPLE, DATABASE_TO_UPPER, DEFAULT_ESCAPE, DEFRAG_ALWAYS, DROP_RESTRICT, ESTIMATED_FUNCTION_TABLE_ROWS, FUNCTIONS_IN_SCHEMA, LARGE_RESULT_BUFFER_SIZE, LARGE_TRANSACTIONS, MAX_COMPACT_COUNT, MAX_COMPACT_TIME, MAX_MEMORY_ROWS_DISTINCT, MAX_QUERY_TIMEOUT, NESTED_JOINS, OPTIMIZE_DISTINCT, OPTIMIZE_EVALUATABLE_SUBQUERIES, OPTIMIZE_INSERT_FROM_SELECT, OPTIMIZE_IN_LIST, OPTIMIZE_IS_NULL, OPTIMIZE_OR, OPTIMIZE_SUBQUERY_CACHE, OPTIMIZE_TWO_EQUALS, OPTIMIZE_UPDATE, PAGE_STORE_INTERNAL_COUNT, PAGE_STORE_TRIM, QUERY_CACHE_SIZE, RECOMPILE_ALWAYS, RECONNECT_CHECK_DELAY, SELECT_FOR_UPDATE_MVCC, SHARE_LINKED_CONNECTIONS. See the Javadoc documentation of DbSettings for details. The system properties are still supported for backward compatibility.
@changelog_1376_li
@changelog_1389_li
When the system property h2.nestedJoins was enabled, some outer joins returned the wrong result.
@changelog_1377_li
@changelog_1390_li
Opening a database could throw a NullPointerException.
@changelog_1378_li
@changelog_1391_li
After a crash, the database file did not always shrink because old transaction log pages were not removed from the file.
@changelog_1379_li
@changelog_1392_li
Various CallableStatement methods could throw a NullPointerException.
@changelog_1380_li
@changelog_1393_li
LOB files were not deleted when running DROP ALL OBJECTS.
@changelog_1381_li
@changelog_1394_li
MS SQL Server compatibility: support "N" in front of string literals ("National Language" strings). Issue 240.
@changelog_1382_li
@changelog_1395_li
CAST: when converting a string to binary, it is hex encoded (every byte two characters); a hex string can be converted to a number by first converting it to binary. Examples: CAST(CAST('FFFF' AS BINARY) AS INT) = 65535, CAST(65535 AS BINARY) = '0000FFFF'.
@changelog_1383_li
@changelog_1396_li
When a domain (user defined data type) contained a user defined function, the database could not be opened.
@changelog_1384_li
@changelog_1397_li
CAST('011' AS INT) will no longer use decode the value as an octal number (using Integer.decode) but now use Integer.parseInt. The same logic applied to byte, short, and long. This also means that trying to convert hex numbers (0x...) with CAST now fails.
@changelog_1385_li
@changelog_1398_li
A table in the Recover tool script could not be imported if the script contained duplicate keys.
@cheatSheet_1000_h1
...
...
@@ -9004,14 +9043,14 @@ Enable Mode.supportOffsetFetch by default, so that "select 1 fetch first 1 row o
@roadmap_1008_li
The default user name should be an empty string and not "sa".
@roadmap_1009_h2
Priority 1
@roadmap_1009_li
Deprecate Csv.getInstance() (use the public constructor instead).
@roadmap_1010_li
Bugfixes.
@roadmap_1010_h2
Priority 1
@roadmap_1011_li
Test if out of disk space can corrupt a database.
Bugfixes.
@roadmap_1012_li
More tests with MULTI_THREADED=1 (and MULTI_THREADED with MVCC): Online backup (using the 'backup' statement).
...
...
@@ -9587,226 +9626,226 @@ Move Maven 2 repository from hsql.sf.net to h2database.sf.net
Optimize A=? OR B=? to UNION if the cost is lower.
@roadmap_1204_li
Support custom collators, for example for natural sort (for text that contains numbers).
Javadoc: document design patterns used
@roadmap_1205_li
Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
Support custom collators, for example for natural sort (for text that contains numbers).
@roadmap_1206_li
Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
@roadmap_1207_li
Support OUT parameters in user-defined procedures.
Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
@roadmap_1208_li
Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
Support OUT parameters in user-defined procedures.
@roadmap_1209_li
HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
@roadmap_1210_li
Translation: use ?? in help.csv
HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
@roadmap_1211_li
Translated .pdf
Translation: use ?? in help.csv
@roadmap_1212_li
Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
Translated .pdf
@roadmap_1213_li
Issue 357: support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
@roadmap_1214_li
RECOVER=2 to backup the database, run recovery, open the database
Issue 357: support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
@roadmap_1215_li
Recovery should work with encrypted databases
RECOVER=2 to backup the database, run recovery, open the database
@roadmap_1216_li
Corruption: new error code, add help
Recovery should work with encrypted databases
@roadmap_1217_li
Space reuse: after init, scan all storages and free those that don't belong to a live database object
Corruption: new error code, add help
@roadmap_1218_li
Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
Space reuse: after init, scan all storages and free those that don't belong to a live database object
@roadmap_1219_li
Support NOCACHE table option (Oracle).
Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
@roadmap_1220_li
Support table partitioning.
Support NOCACHE table option (Oracle).
@roadmap_1221_li
Add regular javadocs (using the default doclet, but another css) to the homepage.
Support table partitioning.
@roadmap_1222_li
The database should be kept open for a longer time when using the server mode.
Add regular javadocs (using the default doclet, but another css) to the homepage.
@roadmap_1223_li
Javadocs: for each tool, add a copy & paste sample in the class level.
The database should be kept open for a longer time when using the server mode.
@roadmap_1224_li
Javadocs: add @author tags.
Javadocs: for each tool, add a copy & paste sample in the class level.
@roadmap_1225_li
Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
Javadocs: add @author tags.
@roadmap_1226_li
MySQL compatibility: real SQL statement for DESCRIBE TEST
Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
@roadmap_1227_li
Use a default delay of 1 second before closing a database.
MySQL compatibility: real SQL statement for DESCRIBE TEST
@roadmap_1228_li
Write (log) to system table before adding to internal data structures.
Use a default delay of 1 second before closing a database.
@roadmap_1229_li
Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
Write (log) to system table before adding to internal data structures.
@roadmap_1230_li
Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object) (with test case).
Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
@roadmap_1231_li
MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object) (with test case).
@roadmap_1232_li
Oracle compatibility: support NLS_DATE_FORMAT.
MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
@roadmap_1233_li
Support for Thread.interrupt to cancel running statements.
Oracle compatibility: support NLS_DATE_FORMAT.
@roadmap_1234_li
Cluster: add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
Support for Thread.interrupt to cancel running statements.
@roadmap_1235_li
H2 Console: support CLOB/BLOB download using a link.
Cluster: add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
@roadmap_1236_li
Support flashback queries as in Oracle.
H2 Console: support CLOB/BLOB download using a link.
@roadmap_1237_li
Import / Export of fixed with text files.
Support flashback queries as in Oracle.
@roadmap_1238_li
HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
Import / Export of fixed with text files.
@roadmap_1239_li
Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
@roadmap_1240_li
Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
@roadmap_1241_li
H2 Console: in-place autocomplete.
Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
@roadmap_1242_li
Support large databases: split database files to multiple directories / disks (similar to tablespaces).
H2 Console: in-place autocomplete.
@roadmap_1243_li
H2 Console: support configuration option for fixed width (monospace) font.
Support large databases: split database files to multiple directories / disks (similar to tablespaces).
@roadmap_1244_li
Native fulltext search: support analyzers (specially for Chinese, Japanese).
H2 Console: support configuration option for fixed width (monospace) font.
@roadmap_1245_li
Automatically compact databases from time to time (as a background process).
Native fulltext search: support analyzers (specially for Chinese, Japanese).
@roadmap_1246_li
Test Eclipse DTP.
Automatically compact databases from time to time (as a background process).
@roadmap_1247_li
H2 Console: autocomplete: keep the previous setting
Test Eclipse DTP.
@roadmap_1248_li
executeBatch: option to stop at the first failed statement.
H2 Console: autocomplete: keep the previous setting
@roadmap_1249_li
Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
executeBatch: option to stop at the first failed statement.
@roadmap_1250_li
Support Oracle ROWID (unique identifier for each row).
Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
@roadmap_1251_li
MySQL compatibility: alter table add index i(c), add constraint c foreign key(c) references t(c);
Support Oracle ROWID (unique identifier for each row).
@roadmap_1252_li
Server mode: improve performance for batch updates.
MySQL compatibility: alter table add index i(c), add constraint c foreign key(c) references t(c);
@roadmap_1253_li
Applets: support read-only databases in a zip file (accessed as a resource).
Server mode: improve performance for batch updates.
@roadmap_1254_li
Long running queries / errors / trace system table.
Applets: support read-only databases in a zip file (accessed as a resource).
@roadmap_1255_li
H2 Console should support JaQu directly.
Long running queries / errors / trace system table.
@roadmap_1256_li
Better document FTL_SEARCH, FTL_SEARCH_DATA.
H2 Console should support JaQu directly.
@roadmap_1257_li
Sequences: CURRVAL should be session specific. Compatibility with PostgreSQL.
Better document FTL_SEARCH, FTL_SEARCH_DATA.
@roadmap_1258_li
Index creation using deterministic functions.
Sequences: CURRVAL should be session specific. Compatibility with PostgreSQL.
@roadmap_1259_li
ANALYZE: for unique indexes that allow null, count the number of null.
Index creation using deterministic functions.
@roadmap_1260_li
MySQL compatibility: multi-table delete: DELETE .. FROM .. [,...] USING - See http://dev.mysql.com/doc/refman/5.0/en/delete.html
ANALYZE: for unique indexes that allow null, count the number of null.
@roadmap_1261_li
AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
MySQL compatibility: multi-table delete: DELETE .. FROM .. [,...] USING - See http://dev.mysql.com/doc/refman/5.0/en/delete.html
@roadmap_1262_li
Avoid using java.util.Calendar internally because it's slow, complicated, and buggy.
AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
@roadmap_1263_li
Support TRUNCATE .. CASCADE like PostgreSQL.
Avoid using java.util.Calendar internally because it's slow, complicated, and buggy.
@roadmap_1264_li
Fulltext search: lazy result generation using SimpleRowSource.
Support TRUNCATE .. CASCADE like PostgreSQL.
@roadmap_1265_li
Fulltext search: support alternative syntax: WHERE FTL_CONTAINS(name, 'hello').
Fulltext search: lazy result generation using SimpleRowSource.
@roadmap_1266_li
MySQL compatibility: support REPLACE, see http://dev.mysql.com/doc/refman/6.0/en/replace.html and issue 73.
Fulltext search: support alternative syntax: WHERE FTL_CONTAINS(name, 'hello').
@roadmap_1267_li
MySQL compatibility: support INSERT INTO table SET column1 = value1, column2 = value2
MySQL compatibility: support REPLACE, see http://dev.mysql.com/doc/refman/6.0/en/replace.html and issue 73.
@roadmap_1268_li
Docs: add a one line description for each functions and SQL statements at the top (in the link section).
MySQL compatibility: support INSERT INTO table SET column1 = value1, column2 = value2
@roadmap_1269_li
Javadoc search: weight for titles should be higher ('random' should list Functions as the best match).
Docs: add a one line description for each functions and SQL statements at the top (in the link section).
@roadmap_1270_li
Replace information_schema tables with regular tables that are automatically re-built when needed. Use indexes.
Javadoc search: weight for titles should be higher ('random' should list Functions as the best match).
@roadmap_1271_li
Issue 50: Oracle compatibility: support calling 0-parameters functions without parenthesis. Make constants obsolete.
Replace information_schema tables with regular tables that are automatically re-built when needed. Use indexes.
@roadmap_1272_li
MySQL, HSQLDB compatibility: support where 'a'=1 (not supported by Derby, PostgreSQL)
Issue 50: Oracle compatibility: support calling 0-parameters functions without parenthesis. Make constants obsolete.
@roadmap_1273_li
Support a data type "timestamp with timezone" using java.util.Calendar.
MySQL, HSQLDB compatibility: support where 'a'=1 (not supported by Derby, PostgreSQL)
@roadmap_1274_li
Finer granularity for SLF4J trace - See http://code.google.com/p/h2database/issues/detail?id=62
Support a data type "timestamp with timezone" using java.util.Calendar.
@roadmap_1275_li
Add database creation date and time to the database.
Finer granularity for SLF4J trace - See http://code.google.com/p/h2database/issues/detail?id=62
@roadmap_1276_li
Optimize A=? OR B=? to UNION if the cost is lower.
Add database creation date and time to the database.
@roadmap_1277_li
Support ASSERTION.
...
...
@@ -10507,16 +10546,19 @@ Optimization: "select id from test" should use the index on id even without "ord
@roadmap_1509_li
Issue 362: LIMIT support for UPDATE statements (MySQL compatibility).
@roadmap_1510_h2
@roadmap_1510_li
Sybase SQL Anywhere compatibility: SELECT TOP ... START AT ...
@roadmap_1511_h2
Not Planned
@roadmap_1511_li
@roadmap_1512_li
HSQLDB (did) support this: select id i from test where i<0 (other databases don't). Supporting it may break compatibility.
@roadmap_1512_li
@roadmap_1513_li
String.intern (so that Strings can be compared with ==) will not be used because some VMs have problems when used extensively.
@roadmap_1513_li
@roadmap_1514_li
In prepared statements, identifier names (table names and so on) can not be parameterized. Adding such a feature would complicate the source code without providing reasonable speedup, and would slow down regular prepared statements.
#Some DatabaseMetaData methods didn't work when using ALLOW_LITERALS NONE.
@changelog_1004_li
#On out of disk space, the database could get corrupt sometimes, if later write operations succeeded. The same problem happened on other kinds of I/O exceptions (where one or some of the writes fail, but subsequent writes succeed). Now the file is closed on the first unsuccessful write operation, so that later requests fail consistently.
#Trying to convert a VARCHAR to UUID will now fail if the text contains a character that is not a hex digit, '-', or not a whitespace.
@changelog_1005_li
#DatabaseEventListener.diskSpaceIsLow() is no longer supported because it can't be guaranteed that it always works correctly.
#TriggerAdapter: in "before" triggers, values can be changed using the ResultSet.updateX methods.
@changelog_1006_li
#XMLTEXT now supports an optional parameter to escape newlines.
#Creating a table with column data type NULL now works (even if not very useful).
@changelog_1007_li
#XMLNODE now support an optional parameter to disable indentation.
#ALTER TABLE ALTER COLUMN no longer copies the data for widening conversions (for example if only the precision was increased) unless necessary.
@changelog_1008_li
#Csv.write now formats date, time, and timestamp values using java.sql.Date / Time / Timestamp.toString(). Previously, ResultSet.getString() was used, which didn't work well for Oracle.
#Multi-threaded kernel: concurrently running an online backup and updating the database resulted in a broken (transactionally incorrect) backup file in some cases.
@changelog_1009_li
#The shell script <code>h2.sh</code> can now be run from within a different directory. Thanks a lot to Daniel Serodio for the patch!
#The script created by SCRIPT DROP did not always work if multiple views existed that depend on each other.
@changelog_1010_li
#The page size of a persistent database can now be queries using: select * from information_schema.settings where name = 'info.PAGE_SIZE'
#MathUtils.getSecureRandom could log a warning to System.err in case the /dev/random is very slow, and the System.getProperties().toString() returned a string larger than 64 KB.
@changelog_1011_li
#The database file locking mechanism "FS" (;FILE_LOCK=FS) did not work on Linux since version 1.3.161.
@changelog_1012_li
#Sequences: the functions NEXTVAL and CURRVAL did not work as expected when using quoted, mixed case sequence names.
@changelog_1013_li
#The constructor for Csv objects is now public, and Csv.getInstance() is now deprecated.
@changelog_1014_li
#SimpleResultSet: updating a result set is now supported.
@changelog_1015_li
#Database URL: extra semicolons are not supported.
@changelog_1016_h2
#Version 1.3.163 (2011-12-30)
@changelog_1017_li
#On out of disk space, the database could get corrupt sometimes, if later write operations succeeded. The same problem happened on other kinds of I/O exceptions (where one or some of the writes fail, but subsequent writes succeed). Now the file is closed on the first unsuccessful write operation, so that later requests fail consistently.
@changelog_1018_li
#DatabaseEventListener.diskSpaceIsLow() is no longer supported because it can't be guaranteed that it always works correctly.
@changelog_1019_li
#XMLTEXT now supports an optional parameter to escape newlines.
@changelog_1020_li
#XMLNODE now support an optional parameter to disable indentation.
@changelog_1021_li
#Csv.write now formats date, time, and timestamp values using java.sql.Date / Time / Timestamp.toString(). Previously, ResultSet.getString() was used, which didn't work well for Oracle.
@changelog_1022_li
#The shell script <code>h2.sh</code> can now be run from within a different directory. Thanks a lot to Daniel Serodio for the patch!
@changelog_1023_li
#The page size of a persistent database can now be queries using: select * from information_schema.settings where name = 'info.PAGE_SIZE'
@changelog_1024_li
#In the server mode, BLOB and CLOB objects are no longer closed when the result set is closed (as required by the JDBC spec).
@changelog_1012_h2
@changelog_1025_h2
#Version 1.3.162 (2011-11-26)
@changelog_1013_li
@changelog_1026_li
#The following system properties are no longer supported: <code>h2.allowBigDecimalExtensions</code>, <code>h2.emptyPassword</code>, <code>h2.minColumnNameMap</code>, <code>h2.returnLobObjects</code>, <code>h2.webMaxValueLength</code>.
@changelog_1014_li
@changelog_1027_li
#When using a VPN, starting a H2 server did not work (for some VPN software).
@changelog_1015_li
@changelog_1028_li
#Oracle compatibility: support for DECODE(...).
@changelog_1016_li
@changelog_1029_li
#Lucene fulltext search: creating an index is now faster if the table already contains data. Thanks a lot to Angel Leon from the FrostWire Team for the patch!
@changelog_1017_li
@changelog_1030_li
#Update statements with a column list in brackets did not work if the list only contains one column. Example: update test set (id)=(id).
@changelog_1018_li
@changelog_1031_li
#Read-only databases in a zip file did not work when using the -baseDir option.
@changelog_1019_li
@changelog_1032_li
#Issue 334: SimpleResultSet.getString now also works for Clob columns.
@changelog_1020_li
@changelog_1033_li
#Subqueries with an aggregate did not always work. Example: select (select count(*) from test where a = t.a and b = 0) from test t group by a
@changelog_1021_li
@changelog_1034_li
#Server: in some (theoretical) cases, exceptions while closing the connection were ignored.
@changelog_1022_li
@changelog_1035_li
#Server.createTcpServer, createPgServer, createWebServer: invalid arguments are now detected.
@changelog_1023_li
@changelog_1036_li
#The selectivity of LOB columns is no longer calculated because indexes on LOB columns are not supported (however this should have little effect on performance, as the selectivity is calculated from the hash code and not the data).
@changelog_1024_li
@changelog_1037_li
#New experimental system property "h2.modifyOnWrite": when enabled, the database file is only modified when writing to the database. When enabled, the serialized file lock is much faster for read-only operations.
@changelog_1025_li
@changelog_1038_li
#A NullPointerException could occur in TableView.isDeterministic for invalid views.
@changelog_1026_li
@changelog_1039_li
#Issue 180: when deserializing objects, the context class loader is used instead of the default class loader if the system property "h2.useThreadContextClassLoader" is set. Thanks a lot to Noah Fontes for the patch!
@changelog_1027_li
@changelog_1040_li
#When using the exclusive mode, LOB operations could cause the thread to block. This also affected the CreateCluster tool (when using BLOB or CLOB data).
@changelog_1028_li
@changelog_1041_li
#The optimization for "group by" was not working correctly if the group by column was aliased in the select list.
@changelog_1029_li
@changelog_1042_li
#Issue 326: improved support for case sensitive (mixed case) identifiers without quotes when using DATABASE_TO_UPPER=FALSE.
@changelog_1030_h2
@changelog_1043_h2
#Version 1.3.161 (2011-10-28)
@changelog_1031_li
@changelog_1044_li
#Issue 351: MySQL mode: can not create a table with the column "KEY", and can not open databases where such a table already exists.
@changelog_1032_li
@changelog_1045_li
#TCP server: when using the trace option ("-trace"), the trace output contained unnecessary stack traces when stopping the server.
@changelog_1033_li
@changelog_1046_li
#Issue 354: when using the multi-threaded kernel option, and multiple threads concurrently prepared SQL statements that use the same view or the same index of a view, then in some cases an infinite loop could occur.
@changelog_1034_li
@changelog_1047_li
#Issue 350: when using instead of triggers, executeUpdate for delete operations always returned 0.
@changelog_1035_li
@changelog_1048_li
#Some timestamps with timezone were not converted correctly. For example, in the PST timezone, the timestamp 2011-10-26 08:00:00Z was converted to 2011-10-25 25:00:00 instead of 2011-10-26 01:00:00. Depending on the database operation, this caused subsequent error.
@changelog_1036_li
@changelog_1049_li
#Sequences with cache size smaller than 0 did not work correctly.
@changelog_1037_li
@changelog_1050_li
#Issue 356: for Blob objects, InputStream.skip() returned 0, causing EOFException in Blob.getBytes(.., ..).
@changelog_1038_li
@changelog_1051_li
#Updatable result sets: if the value is not set when inserting a new row, the default value is now used (the same behavior as MySQL, PostgreSQL, and Apache Derby) instead of NULL.
@changelog_1039_li
@changelog_1052_li
#Conditions of the form IN(SELECT ...) where slow and increased the database size if the subquery result size was larger then the configured MAX_MEMORY_ROWS.
@changelog_1040_li
@changelog_1053_li
#Issue 347: the RunScript and Shell tools now ignore empty statements.
@changelog_1041_li
@changelog_1054_li
#Issue 246: improved error message for data conversion problems.
@changelog_1042_li
@changelog_1055_li
#Issue 344: the build now supports a custom Maven repository location.
@changelog_1043_li
@changelog_1056_li
#Issue 334: Java functions that return CLOB or BLOB objects could not be used as tables.
@changelog_1044_li
@changelog_1057_li
#SimpleResultSet now supports getColumnTypeName and getColumnClassName.
@changelog_1045_li
@changelog_1058_li
#SimpleResultSet now has minimal BLOB and CLOB support.
@changelog_1046_li
@changelog_1059_li
#Improved performance for large databases (many GB), and databases with a small page size.
@changelog_1047_li
@changelog_1060_li
#The Polish translation has been improved by Jarosław Kokociński.
@changelog_1048_li
@changelog_1061_li
#When using the built-in connection pool, after calling the "shutdown" SQL statement, a warning was written to the .trace.db file about an unclosed connection.
@changelog_1049_li
@changelog_1062_li
#Improved compatibility for "fetch first / next row(s)". Thanks a lot to litailang for the patch!
@changelog_1050_li
@changelog_1063_li
#Improved compatibility with the Java 7 FileSystem abstraction.
@changelog_1051_h2
@changelog_1064_h2
#Version 1.3.160 (2011-09-11)
@changelog_1052_li
@changelog_1065_li
#Computed columns could not refer to itself.
@changelog_1053_li
@changelog_1066_li
#Issue 340: Comparison with "x = all(select ...)" or similar in a view or subquery that was used as a table returned the wrong result.
@changelog_1054_li
@changelog_1067_li
#Comparison with "x = all(select ...)" or similar returned the wrong result for some cases (for example if the subquery returned no rows, or multiple rows with the same value, or null, or if x was null).
@changelog_1055_li
@changelog_1068_li
#Issue 335: Could not run DROP ALL OBJECTS DELETE FILES on older databases with CLOB or BLOB data. The problem was that the metadata table was not locked in some cases, so that a rollback could result in a corrupt database in a database if the lob storage was upgraded.
@changelog_1056_li
@changelog_1069_li
#Source code switching using //## has been simplified. The Java 1.5 tag has been removed because is no longer needed.
@changelog_1057_li
@changelog_1070_li
#The JDBC methods PreparedStatement.setTimestamp, setTime, and setDate with a calendar, and the methods ResultSet.getTimestamp, getTime, and getDate with a calendar converted the value in the wrong way, so that for some timestamps the converted value was wrong (where summertime starts, one hour per year).
@changelog_1058_li
@changelog_1071_li
#Invalid tables names in 'order by' columns were not detected in some cases. Example: select x from dual order by y.x
@changelog_1059_li
@changelog_1072_li
#Issue 329: CASE expression: data type problem is not detected.
@changelog_1060_li
@changelog_1073_li
#Issue 311: File lock mode serialized: selecting the next value from a sequence didn't work after a pause, because the database thought this is a read-only operation.
@changelog_1061_h2
@changelog_1074_h2
#Version 1.3.159 (2011-08-13)
@changelog_1062_li
@changelog_1075_li
#Creating a temporary table with the option 'transactional' will now also create the indexes in transactional mode, if the indexes are included in the 'create table' statement as follows: "create local temporary table temp(id int primary key, name varchar, constraint x index(name)) transactional".
@changelog_1063_li
@changelog_1076_li
#The database file size grows now 35%, but at most 256 MB at a time.
@changelog_1064_li
@changelog_1077_li
#Improved error message on network configuration problems.
@changelog_1065_li
@changelog_1078_li
#The build now support an offline build using ./build.sh offline. This will list the required dependencies if jar files are missing.
@changelog_1066_li
@changelog_1079_li
#The BLOB / CLOB data was dropped a little bit before the table was dropped. This could cause "lob not found" errors when the process was killed while a table was dropped.
@changelog_1067_li
@changelog_1080_li
#"group_concat(distinct ...)" did not work correctly in a view or subquery (the 'distinct' was lost). Example: select * from (select group_concat(distinct 1) from system_range(1, 3));
@changelog_1068_li
@changelog_1081_li
#Database URLs can now be re-mapped to another URL using the system property "h2.urlMap", which points to a properties file with database URL mappings.
@changelog_1069_li
@changelog_1082_li
#When using InputStream.skip, trying to read past the end of a BLOB failed with the exception "IO Exception: Missing lob entry: ..." [90028-...].
@changelog_1070_li
@changelog_1083_li
#The in-memory file system "memFS:" now has limited support for directories.
@changelog_1071_li
@changelog_1084_li
#To test recovery, append ;RECOVER_TEST=64 to the database URL. This will simulate an application crash after each 64 writes to the database file. A log file named databaseName.h2.db.log is created that lists the operations. The recovery is tested using an in-memory file system, that means it may require a larger heap setting.
@changelog_1072_li
@changelog_1085_li
#Converting a hex string to a byte array is now faster.
@changelog_1073_li
@changelog_1086_li
#The SQL statement "shutdown defrag" could corrupt the database if the process was killed while the shutdown was in progress. The same problem could occur when the database setting "defrag_always" was used.
@changelog_1074_h2
@changelog_1087_h2
#Version 1.3.158 (2011-07-17)
@changelog_1075_li
@changelog_1088_li
#Fulltext search (native): after re-opening the connection once the fulltext index was created, a transaction rollback did not roll back the modifications in the index.
@changelog_1076_li
@changelog_1089_li
#Support for ROW_NUMBER() OVER() as an alias for ROWNUM() for compatibility with PostgreSQL and Apache Derby.
@changelog_1077_li
@changelog_1090_li
#Issue 325: a deadlock in the fulltext search could occur if the connection that was used while initializing the fulltext search was later used to query the database. This was actually not only a problem for fulltext search, but also for other triggers that used the initializing connection later on.
@changelog_1078_li
@changelog_1091_li
#DATABASE_TO_UPPER: when set to false, all identifier names (table names, column names) are case sensitive (except aggregate, built-in functions, data types, and keywords). This is for improved compatibility with MySQL and PostgreSQL.
@changelog_1079_li
@changelog_1092_li
#When upgrading from an older 1.3.x version to version 1.3.157, when using BLOB or CLOB data, the database could only be opened once.
@changelog_1080_li
@changelog_1093_li
#SUM on a boolean expression will now count the number of 'true' rows.
@changelog_1081_li
@changelog_1094_li
#Simplified test cases using assertThrows(...).
@changelog_1082_li
@changelog_1095_li
#A Java function that returns a result set that was generated using the provided connection could cause an internal error in some cases. Now such result sets are copied early on.
@changelog_1083_li
@changelog_1096_li
#Data type RESULT_SET: information_schema.function_aliases returned type 0; now type -10 is returned (the same as Oracle: OracleTypes.CURSOR = -10).
@changelog_1084_li
@changelog_1097_li
#Data type RESULT_SET: tables with columns of type RESULT_SET could be created, but no data could be persisted in this column.
@changelog_1085_li
@changelog_1098_li
#H2 Console: improved system tray icon for Mac OS X (transparent background).
@changelog_1086_li
@changelog_1099_li
#String.toUpperCase() was used a few places, which is problematic when using the Turkish locale. The method has been replaced with toUpperCase(Locale.ENGLISH) to solve such problems.
@changelog_1087_li
@changelog_1100_li
#Shell tool: the built-in command "distinct" has been removed (use the SQL statements "show tables" / "show columns from tableName" instead). The result set formatting has been improved.
@changelog_1088_li
@changelog_1101_li
#MERGE: if a unique key was violated (but not the primary key or the key columns of the merge itself), the wrong exception was thrown.
@changelog_1089_li
@changelog_1102_li
#IBM DB2 and Apache Derby compatibility: support the pseudo-table SYSIBM.SYSDUMMY1.
@changelog_1090_li
@changelog_1103_li
#ROWNUM() did not work in combination with IN(..). The following query did not work as expected: select * from (select rownum r from test) where r in (1, 2).
@changelog_1091_li
@changelog_1104_li
#H2 Console autocomplete: the autocomplete feature didn't support quoted names.
@changelog_1092_li
@changelog_1105_li
#It is now longer allowed to create an index on a CLOB or BLOB column (except for in-memory databases or indexes), because recovery doesn't work on such columns. Fulltext indexes on such column are still supported of course.
@changelog_1093_li
@changelog_1106_li
#The PUBLIC schema could be renamed, which could result in a database that can't be opened normally. Now it can no longer be renamed. The schema INFORMATION_SCHEMA can also no longer be renamed.
@changelog_1094_li
@changelog_1107_li
#Server mode: the problem with server and client using different timezones with different daylight saving rules has been solved (this only applies when both the client and the server use this or a newer version).
@changelog_1095_li
@changelog_1108_li
#There is a new system property "h2.storeLocalTime" to avoid problems opening a database file in a timezone that has different daylight saving rules (see also below).
@changelog_1096_li
@changelog_1109_li
#Date, time, and timestamp data type processing has been re-implemented. Time now supports nanoseconds resolution and now now supports a wider range (negative and large values), similar to PostgreSQL.
@changelog_1097_li
@changelog_1110_li
#SQL statements with a non-breaking space were considered invalid.
@changelog_1098_h2
@changelog_1111_h2
#Version 1.3.157 (2011-06-25)
@changelog_1099_li
@changelog_1112_li
#The syntax for CREATE TABLE ... AS SELECT ... has been changed: options such as NOT PERSISTENT are now before the query (AS SELECT), because otherwise they might be interpreted as a part of the query.
@changelog_1100_li
@changelog_1113_li
#With version 1.3.156, the DB2 mode could not be used with CLOB and BLOB data.
@changelog_1101_li
@changelog_1114_li
#When upgrading from an older 1.3.x version to version 1.3.156, CLOB and BLOB data was lost in many cases.
@changelog_1102_li
@changelog_1115_li
#The optimization for COUNT(..) on columns that are not nullable was also used for COUNT(DISTINCT ..), which is incorrect.
@changelog_1103_li
@changelog_1116_li
#PgServer: non-admin users could not open a database.
@changelog_1104_li
@changelog_1117_li
#Non-admin users could not open a database using a mode (MODE=xxx) if the database was already open, even if the mode matched.
@changelog_1105_li
@changelog_1118_li
#The SQL state of the following exceptions has been changed: From 90009, 90010, 90011 to 22007: "Cannot parse DATE/TIME/TIMESTAMP constant ...".
@changelog_1106_li
@changelog_1119_li
#There is a problem when opening a database file in a timezone that has different daylight saving rules: the time part of dates where the daylight saving doesn't match will differ. This is not a problem within regions that use the same rules (such as, within USA, or within Europe), even if the timezone itself is different. As a workaround, export the database to a SQL script using the old timezone, and create a new database in the new timezone. The same problem occurs when accessing a database over TCP/IP if the client and server timezones use different rules, if an old server or client is used.
@changelog_1107_h2
@changelog_1120_h2
#Version 1.3.156 (2011-06-17)
@changelog_1108_li
@changelog_1121_li
#Issue 323: NullPointerException when using IN(...) with a function table.
@changelog_1109_li
@changelog_1122_li
#Clob.toString() and Blob.toString() now include the trace identifier.
@changelog_1110_li
@changelog_1123_li
#The SQL parser silently ignored characters such as '^' or '\'. Now a syntax error is thrown.
@changelog_1111_li
@changelog_1124_li
#ROUND(..) now also works with just one parameter.
@changelog_1112_li
@changelog_1125_li
#Access to system tables is now more restrictive for non-admin users (the tables can be still listed, but some of the data is not included).
@changelog_1113_li
@changelog_1126_li
#BLOB: InputStream.skip is now more efficient in embedded mode.
@changelog_1114_li
@changelog_1127_li
#The default expression of a column may no longer reference the table, because a database with such a table couldn't be opened normally.
@changelog_1115_li
@changelog_1128_li
#Referenced objects in check constraints could be dropped, which resulted in a database that can't be opened normally.
@changelog_1116_li
@changelog_1129_li
#Improved Oracle compatibility for NVL2. Thanks again to litailang for the patch.
@changelog_1117_li
@changelog_1130_li
#CSVREAD now supports the option 'preserveWhitespace'.
@changelog_1118_li
@changelog_1131_li
#Recursive queries with many rows could throw an IndexOutOfBoundsException.
@changelog_1119_li
@changelog_1132_li
#The auto-server mode can't be combined with an in-memory database. This invalid combination wasn't detected so far. Now trying to open a database in this way fails.
@changelog_1120_li
@changelog_1133_li
#Improved performance for reading and writing date and time values.
@changelog_1121_li
@changelog_1134_li
#Java functions: array component types are now preserved, so that a ResultSet.getObject() will return Integer[] if the Java functions returns Integer[]. Thanks to Noel Grandin for the patch. Component types are transferred over the network, but not persisted in the database file as of now.
@changelog_1122_li
@changelog_1135_li
#Recover tool: the script generated by the recover tool didn't work if fulltext search was used, because the triggers were created before the primary keys.
@changelog_1123_li
@changelog_1136_li
#Issue 321: the database does not expect XA rollback without XA prepare (an exception was unnecessarily written into the .trace.db file).
@changelog_1124_li
@changelog_1137_li
#Read-only databases: some queries (such as distinct queries) tried to create temporary tables, which failed for read only databases.
@changelog_1125_li
@changelog_1138_li
#This database no longer uses finalize() except for temporary files. The system property "h2.runFinalize" is no longer supported. Unclosed connections are still detected, but the opening stack trace is now collected only if connections are not closed repeatedly (starting with the second unclosed connection). To detect unclosed connections, a PhantomReference is used.
@changelog_1126_li
@changelog_1139_li
#Issue 322: Left joins didn't work when used as subquery in the form clause.
@changelog_1127_li
@changelog_1140_li
#A prepared statement if type CALL that returned a result set could throw a NullPointerException if executed multiple times.
@changelog_1128_li
@changelog_1141_li
#The following built-in functions were marked as deterministic and therefore not re-executed when using in a prepared statement: LOCK_TIMEOUT, LINK_SCHEMA, CANCEL_SESSION, FILE_READ.
@changelog_1129_li
@changelog_1142_li
#Count on a column that can not be null is now optimized to COUNT(*). Thanks a lot to Ross Judson for providing a patch and test case!
@changelog_1130_li
@changelog_1143_li
#The following prepared statements are now cached as well: insert, update, delete, call, merge, and transactional commands.
@changelog_1131_li
@changelog_1144_li
#The built-in connection pool is now a bit faster.
@changelog_1132_li
@changelog_1145_li
#The scale was not set correctly in some cases when using CREATE TABLE AS SELECT if there was no explicit column definition.
@changelog_1133_li
@changelog_1146_li
#When trying to connect to a server using TCP/IP failed, it will retry at most until the timeout. Before, it was the timeout multiplied with the retry count.
@changelog_1134_h2
@changelog_1147_h2
#Version 1.3.155 (2011-05-27)
@changelog_1135_li
@changelog_1148_li
#When altering a table with triggers, new triggers are created and initialized with a table name that ends with tableName_COPY_x_y. The plan is that this will not be required in future versions.
@changelog_1136_li
@changelog_1149_li
#If some of the file system operations failed, System.gc() was called in a loop. Now it is called once at most.
@changelog_1137_li
@changelog_1150_li
#Triggers (including the fulltext search) could throw the exception 'Unexpected code path' in Session.log.
@changelog_1138_li
@changelog_1151_li
#CURRENT_TIMESTAMP() and so on now return the same value within a transaction.
@changelog_1139_li
@changelog_1152_li
#The statement CALL no longer converts an ARRAY return value to a list of values. Now an ARRAY is returned.
@changelog_1140_li
@changelog_1153_li
#VALUES is now supported as a standalone command and as a table source: SELECT * FROM (VALUES(1, 'Hello'), (2, 'World')) AS V;
@changelog_1141_li
@changelog_1154_li
#TIMESTAMPADD is now an alias for DATEADD. Most SQL_TSI_ constants are now supported for for TIMESTAMPADD and TIMESTAMPDIFF (all except SQL_TSI_QUARTER and SQL_TSI_FRAC_SECOND).
@changelog_1142_li
@changelog_1155_li
#Issue 313: NullPointerException in select query with a subquery or view.
@changelog_1143_li
@changelog_1156_li
#Native fulltext search: the characters '<', '>', and '\' are now also whitespace characters. Also, the list of whitespace characters can be changed using FullText.setWhitespaceChars(conn, ...)
@changelog_1144_li
@changelog_1157_li
#When reading from the classpath (for example read_file('classpath:logo.png')), now the content class loader is used if the resource can't be found otherwise.
@changelog_1145_li
@changelog_1158_li
#The statement "script drop" create a script that couldn't be executed if a table contained a reference to a user defined function.
@changelog_1146_li
@changelog_1159_li
#Opening a database with both multi-threaded mode and lock mode 0 (disable locking) was possible (but only once), even thought it does not work properly. Now it is no longer allowed.
@changelog_1147_li
@changelog_1160_li
#LOB objects are now deleted (and the empty space is reused) when the transaction is committed. So far, the space wasn't re-used until the connection was closed.
@changelog_1148_li
@changelog_1161_li
#SCRIPT DROP did not use the cascade option for table, which would cause problems if a view was dropped before a table it depends on. Now the cascade option is used.
@changelog_1149_li
@changelog_1162_li
#The query plan of queries with subqueries that contain nested joins was wrong. This could result in syntax exceptions for correct queries. Example: select 1 from (select 2 from ((test t1 inner join test t2 on t1.id=t2.id) inner join test t3 on t3.id=t1.id)) x;
@changelog_1150_li
@changelog_1163_li
#DatabaseEventListener.init was called with a null url when using the server mode.
@changelog_1151_li
@changelog_1164_li
#Support for the function LN (an alias for LOG).
@changelog_1152_li
@changelog_1165_li
#Support for the function CEIL (an alias for CEILING).
@changelog_1153_li
@changelog_1166_li
#Issue 315: Access to LOBs could cause a Java level deadlock.
@changelog_1154_li
@changelog_1167_li
#Support for the ICU4J collator.
@changelog_1155_li
@changelog_1168_li
#Improved Oracle compatibility: support for NVL2. Thanks to litailang for the patch!
@changelog_1156_li
@changelog_1169_li
#Improved PostgreSQL compatibility: support for RANDOM() in addition to RAND().
@changelog_1157_li
@changelog_1170_li
#There was a classloader memory leak problem because a class contained a static references to an exception (including stack trace).
@changelog_1158_li
@changelog_1171_li
#Split file system: truncating a file now deletes the parts in reverse order, so that the file list is consistent if the process is interrupted while truncating.
@changelog_1159_li
@changelog_1172_li
#The H2 JDBC client can now be used in an unsigned Applet. The problem was that System.getProperty throws a SecurityException, which is now ignored.
@changelog_1160_li
@changelog_1173_li
#The condition "in(select ...)" did not work correctly if the subquery could not be converted to a "distinct" query, as in: "select * from dual where x in (select x from dual group by x order by max(x))". Now the subquery needs to be made distinct manually if this optimization is needed.
@changelog_1161_li
@changelog_1174_li
#In the last release, the error code for "Wrong user name or password" was still 08004 instead of 28000, which resulted in the wrong error message.
@changelog_1162_li
@changelog_1175_li
#In some cases, creating a new table or altering an existing table threw the exception: Unique index or primary key violation: "PRIMARY KEY ON """".PAGE_INDEX".
@changelog_1163_li
@changelog_1176_li
#The Shell tool no longer supports the built-in command "show", because it is a legal SQL statement for H2 and MySQL. However, the "describe" command is still supported, and now lists all tables if called without parameter.
@changelog_1164_li
@changelog_1177_li
#The sorted insert mode (as in "insert into ... direct sorted select") did not work for not-persisted tables in a persisted database. It threw a ClassCastException.
@changelog_1165_li
@changelog_1178_li
#Issue 308: Statement.getGeneratedKeys() now returns an empty result set if no key was generated.
@changelog_1166_li
@changelog_1179_li
#The h2small.jar (created with build jarSmall) included the Android API. This has been removed, shrinking the jar file by 21 KB.
@changelog_1167_li
@changelog_1180_li
#When creating a table, the precision must now be at least as large as the scale.
@changelog_1168_li
@changelog_1181_li
#Support for Java 1.3 and Java 1.4 has been removed.
@changelog_1169_li
@changelog_1182_li
#Improved error message for syntax error: the list of expected tokens was sometimes not set correctly.
@changelog_1170_li
@changelog_1183_li
#Database file growth can now be limited using the database setting PAGE_STORE_MAX_GROWTH. Slower growth may slow down operation, but speed up closing database.
@changelog_1171_li
@changelog_1184_li
#A read only database with writable linked tables could lead to a DATABASE_IS_READ_ONLY (90097) error. This is fixed now.
@changelog_1172_h2
@changelog_1185_h2
#Version 1.3.154 (2011-04-04)
@changelog_1173_li
@changelog_1186_li
#The SQL state of the following exceptions has been changed: From 90005 to 22001: "Value too long for column ...: ...". From 90039 to 22003: "The value is too large for the precision ..." is merged with "Numeric value out of range". From 90110 to 22003: "... out of range" is merged with "Numeric value out of range". From 90021 to 22018: "Data conversion error converting ...". From 90006 to 23502: "NULL not allowed for column ...". From 23003 to 23503: "Referential integrity constraint violation: ...". From 23001 to 23505: "Unique index or primary key violation: ...". From 23002 to 23506: "Referential integrity constraint violation: ...". From 90056 to 23507: "No default value is set for column ...". From 23000 to 23513: "Check constraint violation: ...". From 08004 to 28000: "Wrong user name or password". From 90051 to 57014: "Statement was canceled or the session timed out".
@changelog_1174_li
@changelog_1187_li
#The H2 Console now detects unsupported command line options. (In the future, it will be combined with the Server tool.)
@changelog_1175_li
@changelog_1188_li
#MySQL compatibility: SHOW COLUMN FOR schemaName.columnName.
@changelog_1176_li
@changelog_1189_li
#DatabaseMetaData.getCrossReference now also lists the name of the primary index (PK_NAME).
@changelog_1177_li
@changelog_1190_li
#If the database contained many CLOB or BLOB values, then closing a connection was very slow. Reason: was that when closing a connection, the temporary CLOB and BLOB values for this connection were removed, but there was no index on this column. For existing databases with many CLOB and BLOB values, creating the index may take a few seconds. The index is added to existing databases automatically.
@changelog_1178_li
@changelog_1191_li
#If a CLOB or BLOB was copied into the same table using INSERT INTO X ... SELECT ... FROM X, and then the original row was deleted, then the copied value was also deleted. This could also result in an ArrayIndexOutOfBoundsException on checkpoint or when closing the database.
@changelog_1179_li
@changelog_1192_li
#Improved performance (up to 10%) due to changed synchronization in the page store.
@changelog_1180_li
@changelog_1193_li
#Reading a resource from the classpath didn't work if there was a leading slash (classpath:/org/...). Now resources can be loaded with or without leading slash.
@changelog_1181_li
@changelog_1194_li
#Support INSERT INTO TEST SET ID = 1, NAME = 'World' (MySQL compatibility).
@changelog_1182_li
@changelog_1195_li
#Issue 304: The condition [NOT] IN (SELECT ...) could throw the exception "Unexpected code path" if the subquery contained ORDER BY.
@changelog_1183_li
@changelog_1196_li
#ALTER TABLE ALTER ADD / REMOVE /ALTER COLUMN dropped some dependent objects (access rights, triggers) of views that depend on the modified table.
@changelog_1184_li
@changelog_1197_li
#CREATE OR REPLACE VIEW dropped some dependent objects (access rights, triggers) if the view already existed before.
@changelog_1185_li
@changelog_1198_li
#New aggregate function HISTOGRAM to calculate the histogram. The plan is to use this function is only used internally when running ANALYZE to generate the histogram that is then used by the query optimizer.
@changelog_1186_li
@changelog_1199_li
#New system function TRUNCATE_VALUE to truncate a value to the required precision. This is the same as for CAST, but without changing the data type, and support for truncating decimal values. (The main use case for this function is to build a histogram of the truncated values). Now BINARY, BLOB, and CLOB can be truncated / cast efficiently as well.
@changelog_1187_li
@changelog_1200_li
#The precision of an ARRAY value is now the sum of the precision of all elements, and result set values have the precision Integer.MAX_VALUE.
@changelog_1188_li
@changelog_1201_li
#CAST(x AS VARCHAR_IGNORECASE(y) / CHAR(y)) returned a VARCHAR if the new precision was lower than the old precision.
@changelog_1189_li
@changelog_1202_li
#SHUTDOWN DEFRAG didn't defragment the database completely if there was a unique hash index for a memory table.
@changelog_1190_li
@changelog_1203_li
#There were some smaller changes in the encrypting file system (work in progress).
@changelog_1191_li
@changelog_1204_li
#Some time and timezone functions didn't support years before 1.
@changelog_1192_h2
@changelog_1205_h2
#Version 1.3.153 (2011-03-14)
@changelog_1193_li
@changelog_1206_li
#Issue 294: The Maven source bundle now contains a manifest file that allows Eclipse to automatically attach the source code (if Maven is used).
@changelog_1194_li
@changelog_1207_li
#A query with an explicit LIMIT 0 will now return no rows (so far it meant no limit), which is compatible with PostgreSQL and MySQL. A negative limit value, (as well as LIMIT NULL) mean no limit (so far a negative limit meant a limit of one row). There were similar problems with OFFSET.
@changelog_1195_li
@changelog_1208_li
#A new encrypting file system has been implemented. It is currently experimental, and not included in the main jar file. The idea is to allow encrypting all files, not just database files. Also implemented is a simple file system shell tool. At some point, this might replace the Backup, ChangeFileEncryption, DeleteDbFiles, and Restore tools.
@changelog_1196_li
@changelog_1209_li
#Lob in database: storing lob objects was not correctly synchronized. This was specially a problem when using Connection.createBlob() / createClob().
@changelog_1197_li
@changelog_1210_li
#Updated the license page (thanks a lot to Abe to help me with this).
@changelog_1198_li
@changelog_1211_li
#Support for database paths with '\' on non-Windows systems.
@changelog_1199_li
@changelog_1212_li
#The NIO cleaner hack wasn't working as expected, because the clear method was called instead of the clean method. This has been fixed. Please note this hack is not enabled by default, to try it you need to set the system property "h2.nioCleanerHack" to true.
@changelog_1200_li
@changelog_1213_li
#Improved MS SQL Server and MySQL compatibility: support DELETE with TOP or LIMIT.
@changelog_1201_li
@changelog_1214_li
#Support for COSH, SINH, and TANH functions.
@changelog_1202_li
@changelog_1215_li
#Support for the % operator (modulo) thanks to Noel Grandin.
@changelog_1203_li
@changelog_1216_li
#Issue 288: Some right outer join queries failed to produce the correct result or threw exceptions such as "column x must be in the group by list".
@changelog_1204_li
@changelog_1217_li
#Some right outer joins with invalid column referenced (typos) threw a NullPointerException instead of "column not found" exception.
@changelog_1205_li
@changelog_1218_li
#New database setting EARLY_FILTER to allow table implementations to apply filter conditions early on.
@changelog_1206_li
@changelog_1219_li
#Cluster: in a two node cluster, if cluster node stopped, and autocommit was enabled, then changes on the remaining cluster node didn't get committed automatically.
@changelog_1207_li
@changelog_1220_li
#Issue 291: Allow org.h2.value.Value as FUNCTION ALIAS params and return value.
@changelog_1208_li
@changelog_1221_li
#Issue 265: Linked tables: auto-reconnect if the backside connection is lost (workaround for the MySQL problem that disconnects after 8 hours of inactivity).
@changelog_1209_li
@changelog_1222_li
#Linked tables: the index conditions was sometimes not used when querying the remote database.
@changelog_1210_li
@changelog_1223_li
#Issue 294: OSGi: the versions were missing in manifest package exports.
@changelog_1211_li
@changelog_1224_li
#The option -baseDir didn't work with symbolic links.
@changelog_1212_li
@changelog_1225_li
#Support for ALTER TABLE ADD COLUMN IF NOT EXISTS.
@changelog_1213_li
@changelog_1226_li
#Database-level connection settings could only be set in the database URL, but not using the Properties parameter of DriverManager.getConnection(String url, Properties info).
@changelog_1214_h2
@changelog_1227_h2
#Version 1.3.152 Beta (2011-03-01)
@changelog_1215_li
@changelog_1228_li
#H2 Console: browser detection didn't work for Mac OS X with OpenJDK 1.7.
@changelog_1216_li
@changelog_1229_li
#The double or float value -0.0 is now distinct from 0.0 (as in Java).
@changelog_1217_li
@changelog_1230_li
#TCP and PG server: if the default port is already in use, the services are now started on another free port (unless the port is explicitly set). This allows to start the H2 Console even if the TCP or PG servers are already running.
@changelog_1218_li
@changelog_1231_li
#LIKE didn't use an index unless the right hand side was a literal or parameter. Now an index is used for LIKE CONCAT(?, '%').
@changelog_1219_li
@changelog_1232_li
#Array literals with zero or one element were not be parsed correctly. Now trailing commas are ignored (as in Java). Expressions of the form '(1)' are still parsed as the value 1. An empty array is '()'. An array with one element must contain a comma to be parsed as an array, as in '(1,)'.
@changelog_1220_li
@changelog_1233_li
#Issue 290: Conditions using subqueries were sometimes evaluated before much simpler conditions, which was very bad for performance. This includes subqueries returning a value, EXISTS subqueries, and IN(SELECT ..) subqueries.
@changelog_1221_li
@changelog_1234_li
#Issue 288: Some queries with right outer joins or nested joins could throw a NullPointerException.
@changelog_1222_li
@changelog_1235_li
#The database can now be compiled with Java 7. Stub methods for the new JDBC 4.1 methods have been implemented, but the new features can't be used yet.
@changelog_1223_li
@changelog_1236_li
#Issue 289: Railroads (BNF) for "Column Definition" was incorrect.
@changelog_1224_li
@changelog_1237_li
#Issue 287: Railroads (BNF) is not readable for certain web-browser configurations (dark background).
@changelog_1225_li
@changelog_1238_li
#Executing a CSVREAD query multiple times could result in an exception if the data was changed on disk.
@changelog_1226_li
@changelog_1239_li
#SQL railroad diagrams: improved images for people with black background settings.
@changelog_1227_li
@changelog_1240_li
#Build-in documentation search: improved results if searching for multiple words.
@changelog_1228_li
@changelog_1241_li
#DatabaseMetaData.getColumns: there is a typo in the JDBC specification, so that the column #19 is named SCOPE_CATLOG instead of SCOPE_CATALOG. For compatibility with the specification, a new column #24 named SCOPE_CATLOG is added. This typo is fixed in the JDBC 4.1 specification. Please note that MySQL only supports SCOPE_CATALOG, while other databases only support SCOPE_CATLOG.
@changelog_1229_li
@changelog_1242_li
#Build: jar files are now downloaded using Maven if possible (and cached in the local Maven repository). Unfortunately, in many cases this will download more data from the Maven repository.
@changelog_1230_li
@changelog_1243_li
#JaQu has been improved a lot thanks to the new committer James Moger.
@changelog_1231_li
@changelog_1244_li
#New sample application that shows how to use "instead of" triggers to support updatable views.
@changelog_1232_li
@changelog_1245_li
#H2 Console: opening a MS SQL Server database is now faster. Also, listing the database meta data sometimes resulted in an exception.
@changelog_1233_li
@changelog_1246_li
#Linked tables / MS SQL Server: if the tables were created in mixed case in MS SQL Server, then the identifiers in the linked tables were case sensitive (in H2).
@changelog_1234_li
@changelog_1247_li
#MVCC: the probability of a lock timeout is now lower if multiple threads try to update the same rows.
@changelog_1235_li
@changelog_1248_li
#Building only the documentation (without compiling all classes) didn't work, specially: ./build.sh clean javadocImpl.
@changelog_1236_li
@changelog_1249_li
#Documentation on how data is stored internally and how indexes work (in the performance section).
@changelog_1237_li
@changelog_1250_li
#Some people reported NullPointerException in FileObjectDiskMapped. The most likely explanation is that multiple threads access the same object at the same time. Therefore, the public methods in this class are now synchronized.
@changelog_1238_li
@changelog_1251_li
#Improved error detection when starting a server with invalid arguments, such as "-tcpPort=9091" or "-tcpPort 9091" (as one parameter) instead of "-tcpPort", "9091".
@changelog_1239_li
@changelog_1252_li
#The function STRINGDECODE ignored characters after a non-escaped double quote. This is no longer the case.
@changelog_1240_li
@changelog_1253_li
#The new CSV option feature introduced in version 1.3.150 didn't support spaces. Now the escape mechanism is changed to support it.
@changelog_1241_li
@changelog_1254_li
#The pseudo-column "_ROWID_" now supports insert, update, and merge (only enabled for version 1.3.x).
@changelog_1242_li
@changelog_1255_li
#Deleting rows in the trigger table inside a trigger could result in a NullPointerException.
@changelog_1243_h2
@changelog_1256_h2
#Version 1.3.151 Beta (2011-02-12)
@changelog_1244_li
@changelog_1257_li
#Server: it was possible to open a database outside of the base URL (if one was set). The test case was broken.
@changelog_1245_li
@changelog_1258_li
#The H2 Console tool now supports a database URL as a command line option.
@changelog_1246_li
@changelog_1259_li
#Clob.getSubString and Blob.getBytes are now up to 3 times faster.
@changelog_1247_li
@changelog_1260_li
#New database setting DEFAULT_CONNECTION (disabled by default) to support DriverManager.getConnection("jdbc:default:connection"). Please note the Oracle JDBC driver will try to resolve this database URL if it is loaded before the H2 driver.
@changelog_1248_li
@changelog_1261_li
#JaQu: the static map Db.TOKENS was not synchronized.
@changelog_1249_li
@changelog_1262_li
#DatabaseMetaData.getProcedureColumns returned the wrong data (it also returned the Connection parameter if there was any).
@changelog_1250_li
@changelog_1263_li
#Issue 284: If the query cache was used (enabled by default in version 1.3.x), and multiple threads used the same connection, and the same query but different prepared statements, parameters of one prepared statement could be overwritten by another.
@changelog_1251_li
@changelog_1264_li
#If the query cache was used (enabled by default in version 1.3.x), parameters of re-used queries were not reset in prepared statements.
@changelog_1252_li
@changelog_1265_li
#CallableStatement: the first row of the result set was skipped when using CallableStatement.execute().
@changelog_1253_li
@changelog_1266_li
#Batch update exceptions now include the root cause and all chained exceptions (getNextException).
@changelog_1254_li
@changelog_1267_li
#Reading a large result set with a BLOB or CLOB column could throw a NullPointerException.
@changelog_1255_li
@changelog_1268_li
#Support for the MS SQL Server syntax VARCHAR(MAX).
@changelog_1256_li
@changelog_1269_li
#The Recover tool could print "/ by zero" on an empty database.
@changelog_1257_li
@changelog_1270_li
#For tables without a single column primary key of type INT or LONG, the unique row id had gaps, which didn't look nice.
@changelog_1258_li
@changelog_1271_li
#Each table now has a pseudo-column "_ROWID_" to get the unique row id (only enabled for version 1.3.x).
@changelog_1259_li
@changelog_1272_li
#User defined functions can now have parameters of any class. Values of type OTHER (or OBJECT or JAVA_OBJECT) are automatically de-serialized in that case.
@changelog_1260_li
@changelog_1273_li
#Linked tables: for NUMERIC column, Oracle reports precision 0 and scale -127. A workaround has been implemented (the same as for DECIMAL columns in version 1.3.150).
@changelog_1261_li
@changelog_1274_li
#Issue 279: Auto-Server mode: unclear error message when trying to connect using AUTO_SERVER if the database is already open without the flag (Connection is broken: "null").
@changelog_1262_li
@changelog_1275_li
#Issue 238: Can drop a column that has a single-column constraint.
@changelog_1263_h2
@changelog_1276_h2
#Version 1.3.150 Beta (2011-01-28)
@changelog_1264_li
@changelog_1277_li
#CSVREAD / CSVWRITE: instead of setting the options one by one, all options can be combined into a space separated key-value pairs.
@changelog_1265_li
@changelog_1278_li
#CSVREAD / CSV tool: there is a new option "lineCommentCharacter" to set or disable line comments. For H2 version 1.2, the default is '#' (as before). For H2 version 1.3, line comments are disabled by default.
@changelog_1266_li
@changelog_1279_li
#Issue 277: JaQu didn't correctly convert a CLOB column to a String.
@changelog_1267_li
@changelog_1280_li
#./build.sh testNetwork could block if there was a network configuration problem.
@changelog_1268_li
@changelog_1281_li
#Reading input streams from the classpath is now supported. Example: RUNSCRIPT FROM 'classpath:org/h2/samples/newsfeed.sql'.
@changelog_1269_li
@changelog_1282_li
#PreparedStatement.toString() now includes the parameter values in a human readable format.
@changelog_1270_li
@changelog_1283_li
#New database setting OPTIMIZE_IN_SELECT (enabled by default for version 1.3.x). If enabled, IN(SELECT...) conditions are faster if there are many rows in the table or subquery.
@changelog_1271_li
@changelog_1284_li
#Linked tables: for DECIMAL column, Oracle reports precision 0 and scale -127. A workaround has been implemented.
@changelog_1272_li
@changelog_1285_li
#TCP Server: a base directory with a prefix with a database name with prefix didn't work as expected (this only applies to non-disk and wrapped file systems).
@changelog_1273_li
@changelog_1286_li
#Version 1.3: when re-running the same query so that the previous result was re-used, and if the result set was large so that it was stored externally (in a temp file or in a temp table), then reading rows from both result sets resulted in an exception or wrong behavior.
@changelog_1274_li
@changelog_1287_li
#A new sample application that shows how to create a read-only database in a zip file where the database file is split into multiple smaller parts.
@changelog_1275_li
@changelog_1288_li
#The Backup tool now supports compressing all files in a given directory.
@changelog_1276_li
@changelog_1289_li
#H2 Console: the special syntax @list and @meta can not be combined.
@changelog_1277_li
@changelog_1290_li
#The wrong error message was thrown when trying to open a database where the database file could not be read for some reason (for example because the split file system was used, and the file was split at the wrong position).
@changelog_1278_li
@changelog_1291_li
#There was a memory leak in the trace system. Opening and closing many connections could run out of memory.
@changelog_1279_li
@changelog_1292_li
#The scan-resistant cache type "TQ" (two queue) is again available. To use it, append ;CACHE_TYPE=TQ to the database URL.
@changelog_1280_h2
@changelog_1293_h2
#Version 1.3.149 Beta (2011-01-07)
@changelog_1281_li
@changelog_1294_li
#Lob in database: after the process was killed while adding a lob, inserting a lob could throw an exception (primary key violation in LOB_MAP).
@changelog_1282_li
@changelog_1295_li
#Server tool: the tcpShutdown feature now also stops other servers (web server and PostgreSQL server).
@changelog_1283_li
@changelog_1296_li
#Server tool: the tcpShutdown url must now end with the port if the port is used.
@changelog_1284_li
@changelog_1297_li
#Server tool: when starting one service fails, the started services are now stopped.
@changelog_1285_li
@changelog_1298_li
#Multi-version concurrency: SELECT ... FOR UPDATE threw a "concurrent update" exception immediately instead of a "lock timeout" exception after the set lock timeout if the row was already locked by another connection.
@changelog_1286_li
@changelog_1299_li
#Translation: the H2 Console and error messages have been translated to Czech by Hannibal (http://hannibal.cestiny.cz/). Thanks a lot!
@changelog_1287_li
@changelog_1300_li
#When the system property h2.lobInDatabase is set, reading a BLOB is a bit faster because the length is not read.
@changelog_1288_li
@changelog_1301_li
#The SimpleResultSet now has a feature to not close the result set after reading the last row.
@changelog_1289_li
@changelog_1302_li
#Native fulltext search: the ignore list doesn't need to be all uppercase now.
@changelog_1290_li
@changelog_1303_li
#Improved statistics output in the Recover tool.
@changelog_1291_li
@changelog_1304_li
#Issue 269: GROUP BY queries with a column or having clause that contains IN(SELECT ...) could return the wrong values. Example: SELECT X IN(SELECT Y) FROM Z GROUP BY X.
@changelog_1292_li
@changelog_1305_li
#After closing a database, the writer thread will stop almost immediately (instead of after at most 100 ms). This should avoid error messages in the Tomcat log file after a shutdown.
@changelog_1293_li
@changelog_1306_li
#Issue 271: ResultSet.getConcurrency() did not correctly detect that the result set is not updatable.
@changelog_1294_li
@changelog_1307_li
#The SLF4J 1.6 API is now used by default (this should not have any user visible effect).
@changelog_1295_li
@changelog_1308_li
#The org.h2.tools.Console no longer calls System.exit on shutdown (this should not have any user visible effect, but should allow to integrate the tool easier into other applications).
@changelog_1296_li
@changelog_1309_li
#Improved date / time arithmetics. Adding and subtracting a floating point value from a date or timestamp is now supported.
@changelog_1297_li
@changelog_1310_li
#When creating a BLOB with in InputStream or a CLOB with a Reader, and the InputStream or Reader threw an non-IOException, then the LOB storage was broken when storing LOBs in the database.
@changelog_1298_li
@changelog_1311_li
#EXPLAIN SELECT didn't include the sample size if one was set.
@changelog_1299_li
@changelog_1312_li
#Improved EXPLAIN plan formatting and documentation.
@changelog_1300_li
@changelog_1313_li
#Issue 266: Domains: a NOT NULL clause in a domain definition ignored.
@changelog_1301_li
@changelog_1314_li
#More accurate calculation of variance and standard deviation for large number of samples with low variance (now using Welford's method).
@changelog_1302_li
@changelog_1315_li
#Server: CLOB data with unicode characters between character code 0xd800 and 0xdfff were not transferred correctly. In many cases, the thread was stuck afterwards.
@changelog_1303_li
@changelog_1316_li
#Issue 264: the Hibernate dialect in src/tools was removed because it is outdated.
@changelog_1304_li
@changelog_1317_li
#Cache size limit could be exceeded for certain queries, leading to an OutOfMemoryError in some cases. Fixed.
@changelog_1305_h2
@changelog_1318_h2
#Version 1.3.148 Beta (2010-12-12)
@changelog_1306_li
@changelog_1319_li
#The built-in connection pool was simplified a bit. The dispose() method no longer throws an exception (it only logs it).
@changelog_1307_li
@changelog_1320_li
#The database upgrade (to upgrade from H2 version 1.1.x) has been simplified.
@changelog_1308_li
@changelog_1321_li
#The feature to log all errors (system properties h2.logAllErrors and h2.logAllErrorsFile) has been removed.
@changelog_1309_li
@changelog_1322_li
#When starting the H2 Console, the properties file can now be completely disabled.
@changelog_1310_li
@changelog_1323_li
#Server.openBrowser no longer writes to System.out directly if opening the URL failed.
@changelog_1311_li
@changelog_1324_li
#The INSERT optimizations (INSERT ... DIRECT SORTED SELECT) were not parsed correctly when using a column list.
@changelog_1312_li
@changelog_1325_li
#H2 Console: the tables and columns are now listed for SQLite as well.
@changelog_1313_li
@changelog_1326_li
#H2 Console: improved autocomplete feature (also simplified the source code for this feature).
@changelog_1314_li
@changelog_1327_li
#Issue 260: the DbStarter servlet context listener now starts the server before opening a connection, so that connecting using the server mode works.
@changelog_1315_li
@changelog_1328_li
#The Shell tool can now enable, disable, and display the current autocommit mode.
@changelog_1316_li
@changelog_1329_li
#Issue 259: there is a limitation in the cluster mode: The SQL statement SET AUTOCOMMIT FALSE doesn't work. To disable autocommit, the method Connection.setAutoCommit(false) needs to be called. This is now documented.
@changelog_1317_li
@changelog_1330_li
#Connection pool / DataSource: a NullPointerException was thrown when using a database URL that doesn't start with "jdbc:h2:".
@changelog_1318_li
@changelog_1331_li
#Using the java.sql.Blob or java.sql.Clob interfaces could throw the wrong exception after the object was closed.
@changelog_1319_li
@changelog_1332_li
#LOB: in server mode, if the feature "LOBs in database" is disabled, the temporary files are now created in the temp directory (the same as when "LOBs in database" is enabled).
@changelog_1320_h2
@changelog_1333_h2
#Version 1.2.147 (2010-11-21)
@changelog_1321_li
@changelog_1334_li
#H2 Console: the server properties directory can now be set on the command line using java ... -properties <directory>. Issue 159.
@changelog_1322_li
@changelog_1335_li
#New feature INSERT INTO ... DIRECT SELECT, mainly to speed up loading tables from a CSV file. When using DIRECT, then the results from the query are directly applied in the target table without any intermediate step (without temporary file).
@changelog_1323_li
@changelog_1336_li
#Converting binary data to UUID was incorrect when the converting more than 31 bytes. Now always the first 16 bytes are used.
@changelog_1324_li
@changelog_1337_li
#Improved date / time arithmetics. Now supported are multiplying and dividing a time with / by a number, adding and subtracting a time to / from a time or date, subtracting a time or timestamp from a timestamp.
@changelog_1325_li
@changelog_1338_li
#The Ant build script has been removed because it is no longer up to date.
@changelog_1326_li
@changelog_1339_li
#Nested outer joins without brackets were not working as expected. Example: select * from a inner join b inner join c on c.id = b.id on b.id = a.id;
@changelog_1327_li
@changelog_1340_li
#JMX (the Java management extension) is now supported. Issue 253.
@changelog_1328_li
@changelog_1341_li
#Creating a comment on a column didn't work if the schema name was equal the database name.
@changelog_1329_li
@changelog_1342_li
#When using multi-version concurrency, re-running a prepared statement with the same parameters would sometimes give the same result even if another connection committed a change (the previous result was sometimes re-used incorrectly).
@changelog_1330_li
@changelog_1343_li
#When using SELECT_FOR_UPDATE_MVCC (lock only the selected rows when using MVCC), the selected rows were sometimes not locked correctly.
@changelog_1331_li
@changelog_1344_li
#When using Lucene 3, the index files were not always closed when the database was closed.
@changelog_1332_li
@changelog_1345_li
#Concurrently preparing a statement and altering a table could throw a table not found exception.
@changelog_1333_li
@changelog_1346_li
#When concurrently preparing many statements with a subquery, in some cases the query didn't run (Column "..." must be in the GROUP BY list).
@changelog_1334_li
@changelog_1347_li
#CallableStatement: now the syntax "{? = CALL...}" is supported as well.
@changelog_1335_li
@changelog_1348_li
#Lob in databases: two small BLOB or CLOB values were always considered equal. This also affected unique indexes.
@changelog_1336_li
@changelog_1349_li
#The shutdown hook is (re-) enabled by default even for H2 version 1.3.x.
@changelog_1337_li
@changelog_1350_li
#When creating a database from a recovery script, the same user can now be used (CREATE USER now always includes IF EXISTS).
@changelog_1338_li
@changelog_1351_li
#The H2 Console now prints a status message if started with parameters.
@changelog_1339_h2
@changelog_1352_h2
#Version 1.3.146 Beta (2010-11-08)
@changelog_1340_li
@changelog_1353_li
#This is a beta version. The next version will be 1.2.147. The differences between 1.2.x and 1.3.x are:
@changelog_1341_li
@changelog_1354_li
#In version 1.3.x, h2.lobInDatabase (store CLOB and BLOB in the database file) is enabled by default.
@changelog_1342_li
@changelog_1355_li
#In version 1.3.x, ANALYZE_AUTO is 2000 (automatic ANALYZE).
@changelog_1343_li
@changelog_1356_li
#In version 1.3.x, DB_CLOSE_ON_EXIT (the shutdown hook) is disabled by default.
@changelog_1344_li
@changelog_1357_li
#In version 1.3.x, DROP_RESTRICT (default action for DROP is RESTRICT) is enabled.
@changelog_1345_li
@changelog_1358_li
#In version 1.3.x, FUNCTIONS_IN_SCHEMA (allow to store functions in a schema) is enabled.
@changelog_1346_li
@changelog_1359_li
#In version 1.3.x, LARGE_TRANSACTIONS (support for very large transactions) is enabled. Changes to tables without a primary key can be buffered to disk.
@changelog_1347_li
@changelog_1360_li
#In version 1.3.x, MAX_MEMORY_ROWS_DISTINCT is set to a 10000.
@changelog_1348_li
@changelog_1361_li
#In version 1.3.x, NESTED_JOINS (nested joins and right outer joins) is enabled.
@changelog_1349_li
@changelog_1362_li
#In version 1.3.x, OPTIMIZE_INSERT_FROM_SELECT (speed up CREATE TABLE ... AS SELECT) is enabled.
@changelog_1350_li
@changelog_1363_li
#In version 1.3.x, OPTIMIZE_OR (convert OR conditions to IN(..) if possible) is enabled.
@changelog_1351_li
@changelog_1364_li
#In version 1.3.x, QUERY_CACHE_SIZE is enabled.
@changelog_1352_li
@changelog_1365_li
#In version 1.3.x, SELECT_FOR_UPDATE_MVCC (MVCC and SELECT FOR UPDATE) is enabled.
@changelog_1353_li
@changelog_1366_li
#In version 1.3.x, RUNSCRIPT and SCRIPT (commands and tools), use UTF-8 by default (ScriptCommand.charset).
@changelog_1354_li
@changelog_1367_li
#In version 1.3.x, Lucene 3 is used by default. Issue 147.
@changelog_1355_li
@changelog_1368_li
#When the system property h2.lobInDatabase is set, the lob tables were always created when closing the database, even if the tables were not needed.
@changelog_1356_li
@changelog_1369_li
#In the MySQL mode, SHOW TABLES didn't work, and meta data tables were not case insensitive. Updatable result sets didn't work as expected. Issue 249.
@changelog_1357_li
@changelog_1370_li
#Connection-created Clob and Blob objects can now be filled using Clob.setCharacterStream(1), Clob.setString(1, s), Blob.setBytes(1, x), Blob.setBinaryStream(1). Issue 235.
@changelog_1358_li
@changelog_1371_li
#Trying to convert a very small CLOB to a BLOB or a very small CLOB to a BLOB threw a NullPointerException.
@changelog_1359_li
@changelog_1372_li
#INFORMATION_SCHEMA.SETTINGS: now the current page count can be queried using select * from information_schema.settings where name = 'info.PAGE_COUNT'.
@changelog_1360_li
@changelog_1373_li
#For an invalid value exception, the parameter name and value was switched in some cases.
@changelog_1361_li
@changelog_1374_li
#When using trace level 3, opening a database no longer prints there is a EOFException (because that is the expected behavior).
@changelog_1362_li
@changelog_1375_li
#CALL calling a Java function with return type ResultSet and return value null threw a ClassCastException.
@changelog_1363_li
@changelog_1376_li
#SELECT ... FROM CSVREAD no longer creates a temporary file. Some large imports are now twice as fast.
@changelog_1364_h2
@changelog_1377_h2
#Version 1.2.145 (2010-11-02)
@changelog_1365_li
@changelog_1378_li
#A new String cache is now created at most once every 5 second, so that out of memory exceptions are not artificially delayed.
@changelog_1366_li
@changelog_1379_li
#After closing a database, the writer thread will stop after 100 ms at the latest (instead of 1 second).
@changelog_1367_li
@changelog_1380_li
#Opening a large database could fail in theory if the process was killed and then not fully compacted (because the unique transaction log key was re-used).
@changelog_1368_li
@changelog_1381_li
#Views now store the schema for Java functions if "functions in schemas" is enabled (system property h2.functionsInSchema).
@changelog_1369_li
@changelog_1382_li
#Improved error message if the LOB files are already deleted on the client side.
@changelog_1370_li
@changelog_1383_li
#Closing a Statement or PreparedStatement at the same time as executing a statement could throw a strange exception. Issue 241.
@changelog_1371_li
@changelog_1384_li
#The Recover tool did not work with compressed lob files (set compress_lob lzf). Also, sometimes the Recover tool was very slow, specially using a 64-bit JVM, because it tried to de-compress lob files even if they were not compressed (which could allocate a lot of memory).
@changelog_1372_li
@changelog_1385_li
#H2 Console: webAllowOthers and webSSL were swapped if they didn't exist in the properties file. Issue 244.
@changelog_1373_li
@changelog_1386_li
#When the system property h2.lobInDatabase is set, CREATE TABLE ... AS SELECT with a LOB column did not always work.
@changelog_1374_li
@changelog_1387_li
#Some system properties are not supported any longer, because they can already be set in the database URL. The constants are: CACHE_SIZE_DEFAULT, CACHE_TYPE_DEFAULT, DEFAULT_LOCK_MODE, LOCK_MODE_READ_COMMITTED, DEFAULT_MAX_LENGTH_INPLACE_LOB, DEFAULT_MAX_LENGTH_INPLACE_LOB2, DEFAULT_MAX_MEMORY_UNDO, DEFAULT_MAX_OPERATION_MEMORY, DEFAULT_PAGE_SIZE, DEFAULT_RESULT_SET_CONCURRENCY, MIN_WRITE_DELAY.
@changelog_1375_li
@changelog_1388_li
#Various system properties have been replaced with database level settings: ALIAS_COLUMN_NAME, ANALYZE_AUTO, ANALYZE_SAMPLE, DATABASE_TO_UPPER, DEFAULT_ESCAPE, DEFRAG_ALWAYS, DROP_RESTRICT, ESTIMATED_FUNCTION_TABLE_ROWS, FUNCTIONS_IN_SCHEMA, LARGE_RESULT_BUFFER_SIZE, LARGE_TRANSACTIONS, MAX_COMPACT_COUNT, MAX_COMPACT_TIME, MAX_MEMORY_ROWS_DISTINCT, MAX_QUERY_TIMEOUT, NESTED_JOINS, OPTIMIZE_DISTINCT, OPTIMIZE_EVALUATABLE_SUBQUERIES, OPTIMIZE_INSERT_FROM_SELECT, OPTIMIZE_IN_LIST, OPTIMIZE_IS_NULL, OPTIMIZE_OR, OPTIMIZE_SUBQUERY_CACHE, OPTIMIZE_TWO_EQUALS, OPTIMIZE_UPDATE, PAGE_STORE_INTERNAL_COUNT, PAGE_STORE_TRIM, QUERY_CACHE_SIZE, RECOMPILE_ALWAYS, RECONNECT_CHECK_DELAY, SELECT_FOR_UPDATE_MVCC, SHARE_LINKED_CONNECTIONS. See the Javadoc documentation of DbSettings for details. The system properties are still supported for backward compatibility.
@changelog_1376_li
@changelog_1389_li
#When the system property h2.nestedJoins was enabled, some outer joins returned the wrong result.
@changelog_1377_li
@changelog_1390_li
#Opening a database could throw a NullPointerException.
@changelog_1378_li
@changelog_1391_li
#After a crash, the database file did not always shrink because old transaction log pages were not removed from the file.
@changelog_1379_li
@changelog_1392_li
#Various CallableStatement methods could throw a NullPointerException.
@changelog_1380_li
@changelog_1393_li
#LOB files were not deleted when running DROP ALL OBJECTS.
@changelog_1381_li
@changelog_1394_li
#MS SQL Server compatibility: support "N" in front of string literals ("National Language" strings). Issue 240.
@changelog_1382_li
@changelog_1395_li
#CAST: when converting a string to binary, it is hex encoded (every byte two characters); a hex string can be converted to a number by first converting it to binary. Examples: CAST(CAST('FFFF' AS BINARY) AS INT) = 65535, CAST(65535 AS BINARY) = '0000FFFF'.
@changelog_1383_li
@changelog_1396_li
#When a domain (user defined data type) contained a user defined function, the database could not be opened.
@changelog_1384_li
@changelog_1397_li
#CAST('011' AS INT) will no longer use decode the value as an octal number (using Integer.decode) but now use Integer.parseInt. The same logic applied to byte, short, and long. This also means that trying to convert hex numbers (0x...) with CAST now fails.
@changelog_1385_li
@changelog_1398_li
#A table in the Recover tool script could not be imported if the script contained duplicate keys.
@cheatSheet_1000_h1
...
...
@@ -9004,14 +9043,14 @@ H2 コンソール アプリケーション
@roadmap_1008_li
#The default user name should be an empty string and not "sa".
@roadmap_1009_h2
#Priority 1
@roadmap_1009_li
#Deprecate Csv.getInstance() (use the public constructor instead).
@roadmap_1010_li
#Bugfixes.
@roadmap_1010_h2
#Priority 1
@roadmap_1011_li
#Test if out of disk space can corrupt a database.
#Bugfixes.
@roadmap_1012_li
#More tests with MULTI_THREADED=1 (and MULTI_THREADED with MVCC): Online backup (using the 'backup' statement).
#Optimize A=? OR B=? to UNION if the cost is lower.
@roadmap_1204_li
#Support custom collators, for example for natural sort (for text that contains numbers).
#Javadoc: document design patterns used
@roadmap_1205_li
#Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
#Support custom collators, for example for natural sort (for text that contains numbers).
@roadmap_1206_li
#Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
#Write an article about SQLInjection (h2/src/docsrc/html/images/SQLInjection.txt)
@roadmap_1207_li
#Support OUT parameters in user-defined procedures.
#Convert SQL-injection-2.txt to html document, include SQLInjection.java sample
@roadmap_1208_li
#Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
#Support OUT parameters in user-defined procedures.
@roadmap_1209_li
#HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
#Web site design: http://www.igniterealtime.org/projects/openfire/index.jsp
@roadmap_1210_li
#Translation: use ?? in help.csv
#HSQLDB compatibility: Openfire server uses: CREATE SCHEMA PUBLIC AUTHORIZATION DBA; CREATE USER SA PASSWORD ""; GRANT DBA TO SA; SET SCHEMA PUBLIC
@roadmap_1211_li
#Translated .pdf
#Translation: use ?? in help.csv
@roadmap_1212_li
#Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
#Translated .pdf
@roadmap_1213_li
#Issue 357: support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
#Recovery tool: bad blocks should be converted to INSERT INTO SYSTEM_ERRORS(...), and things should go into the .trace.db file
@roadmap_1214_li
#RECOVER=2 to backup the database, run recovery, open the database
#Issue 357: support getGeneratedKeys to return multiple rows when used with batch updates. This is supported by MySQL, but not Derby. Both PostgreSQL and HSQLDB don't support getGeneratedKeys. Also support it when using INSERT ... SELECT.
@roadmap_1215_li
#Recovery should work with encrypted databases
#RECOVER=2 to backup the database, run recovery, open the database
@roadmap_1216_li
#Corruption: new error code, add help
#Recovery should work with encrypted databases
@roadmap_1217_li
#Space reuse: after init, scan all storages and free those that don't belong to a live database object
#Corruption: new error code, add help
@roadmap_1218_li
#Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
#Space reuse: after init, scan all storages and free those that don't belong to a live database object
@roadmap_1219_li
#Support NOCACHE table option (Oracle).
#Access rights: add missing features (users should be 'owner' of objects; missing rights for sequences; dropping objects)
@roadmap_1220_li
#Support table partitioning.
#Support NOCACHE table option (Oracle).
@roadmap_1221_li
#Add regular javadocs (using the default doclet, but another css) to the homepage.
#Support table partitioning.
@roadmap_1222_li
#The database should be kept open for a longer time when using the server mode.
#Add regular javadocs (using the default doclet, but another css) to the homepage.
@roadmap_1223_li
#Javadocs: for each tool, add a copy & paste sample in the class level.
#The database should be kept open for a longer time when using the server mode.
@roadmap_1224_li
#Javadocs: add @author tags.
#Javadocs: for each tool, add a copy & paste sample in the class level.
@roadmap_1225_li
#Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
#Javadocs: add @author tags.
@roadmap_1226_li
#MySQL compatibility: real SQL statement for DESCRIBE TEST
#Fluent API for tools: Server.createTcpServer().setPort(9081).setPassword(password).start();
@roadmap_1227_li
#Use a default delay of 1 second before closing a database.
#MySQL compatibility: real SQL statement for DESCRIBE TEST
@roadmap_1228_li
#Write (log) to system table before adding to internal data structures.
#Use a default delay of 1 second before closing a database.
@roadmap_1229_li
#Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
#Write (log) to system table before adding to internal data structures.
@roadmap_1230_li
#Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object) (with test case).
#Support direct lookup for MIN and MAX when using WHERE (see todo.txt / Direct Lookup).
@roadmap_1231_li
#MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
#Support other array types (String[], double[]) in PreparedStatement.setObject(int, Object) (with test case).
@roadmap_1232_li
#Oracle compatibility: support NLS_DATE_FORMAT.
#MVCC should not be memory bound (uncommitted data is kept in memory in the delta index; maybe using a regular b-tree index solves the problem).
@roadmap_1233_li
#Support for Thread.interrupt to cancel running statements.
#Oracle compatibility: support NLS_DATE_FORMAT.
@roadmap_1234_li
#Cluster: add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
#Support for Thread.interrupt to cancel running statements.
@roadmap_1235_li
#H2 Console: support CLOB/BLOB download using a link.
#Cluster: add feature to make sure cluster nodes can not get out of sync (for example by stopping one process).
@roadmap_1236_li
#Support flashback queries as in Oracle.
#H2 Console: support CLOB/BLOB download using a link.
@roadmap_1237_li
#Import / Export of fixed with text files.
#Support flashback queries as in Oracle.
@roadmap_1238_li
#HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
#Import / Export of fixed with text files.
@roadmap_1239_li
#Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
#HSQLDB compatibility: automatic data type for SUM if value is the value is too big (by default use the same type as the data).
@roadmap_1240_li
#Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
#Improve the optimizer to select the right index for special cases: where id between 2 and 4 and booleanColumn
@roadmap_1241_li
#H2 Console: in-place autocomplete.
#Linked tables: make hidden columns available (Oracle: rowid and ora_rowscn columns).
@roadmap_1242_li
#Support large databases: split database files to multiple directories / disks (similar to tablespaces).
#H2 Console: in-place autocomplete.
@roadmap_1243_li
#H2 Console: support configuration option for fixed width (monospace) font.
#Support large databases: split database files to multiple directories / disks (similar to tablespaces).
@roadmap_1244_li
#Native fulltext search: support analyzers (specially for Chinese, Japanese).
#H2 Console: support configuration option for fixed width (monospace) font.
@roadmap_1245_li
#Automatically compact databases from time to time (as a background process).
#Native fulltext search: support analyzers (specially for Chinese, Japanese).
@roadmap_1246_li
#Test Eclipse DTP.
#Automatically compact databases from time to time (as a background process).
@roadmap_1247_li
#H2 Console: autocomplete: keep the previous setting
#Test Eclipse DTP.
@roadmap_1248_li
#executeBatch: option to stop at the first failed statement.
#H2 Console: autocomplete: keep the previous setting
@roadmap_1249_li
#Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
#executeBatch: option to stop at the first failed statement.
@roadmap_1250_li
#Support Oracle ROWID (unique identifier for each row).
#Implement OLAP features as described here: http://www.devx.com/getHelpOn/10MinuteSolution/16573/0/page/5
@roadmap_1251_li
#MySQL compatibility: alter table add index i(c), add constraint c foreign key(c) references t(c);
#Support Oracle ROWID (unique identifier for each row).
@roadmap_1252_li
#Server mode: improve performance for batch updates.
#MySQL compatibility: alter table add index i(c), add constraint c foreign key(c) references t(c);
@roadmap_1253_li
#Applets: support read-only databases in a zip file (accessed as a resource).
#Server mode: improve performance for batch updates.
@roadmap_1254_li
#Long running queries / errors / trace system table.
#Applets: support read-only databases in a zip file (accessed as a resource).
@roadmap_1255_li
#H2 Console should support JaQu directly.
#Long running queries / errors / trace system table.
@roadmap_1256_li
#Better document FTL_SEARCH, FTL_SEARCH_DATA.
#H2 Console should support JaQu directly.
@roadmap_1257_li
#Sequences: CURRVAL should be session specific. Compatibility with PostgreSQL.
#Better document FTL_SEARCH, FTL_SEARCH_DATA.
@roadmap_1258_li
#Index creation using deterministic functions.
#Sequences: CURRVAL should be session specific. Compatibility with PostgreSQL.
@roadmap_1259_li
#ANALYZE: for unique indexes that allow null, count the number of null.
#Index creation using deterministic functions.
@roadmap_1260_li
#MySQL compatibility: multi-table delete: DELETE .. FROM .. [,...] USING - See http://dev.mysql.com/doc/refman/5.0/en/delete.html
#ANALYZE: for unique indexes that allow null, count the number of null.
@roadmap_1261_li
#AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
#MySQL compatibility: multi-table delete: DELETE .. FROM .. [,...] USING - See http://dev.mysql.com/doc/refman/5.0/en/delete.html
@roadmap_1262_li
#Avoid using java.util.Calendar internally because it's slow, complicated, and buggy.
#AUTO_SERVER: support changing IP addresses (disable a network while the database is open).
@roadmap_1263_li
#Support TRUNCATE .. CASCADE like PostgreSQL.
#Avoid using java.util.Calendar internally because it's slow, complicated, and buggy.
@roadmap_1264_li
#Fulltext search: lazy result generation using SimpleRowSource.
#Support TRUNCATE .. CASCADE like PostgreSQL.
@roadmap_1265_li
#Fulltext search: support alternative syntax: WHERE FTL_CONTAINS(name, 'hello').
#Fulltext search: lazy result generation using SimpleRowSource.
@roadmap_1266_li
#MySQL compatibility: support REPLACE, see http://dev.mysql.com/doc/refman/6.0/en/replace.html and issue 73.
#Fulltext search: support alternative syntax: WHERE FTL_CONTAINS(name, 'hello').
@roadmap_1267_li
#MySQL compatibility: support INSERT INTO table SET column1 = value1, column2 = value2
#MySQL compatibility: support REPLACE, see http://dev.mysql.com/doc/refman/6.0/en/replace.html and issue 73.
@roadmap_1268_li
#Docs: add a one line description for each functions and SQL statements at the top (in the link section).
#MySQL compatibility: support INSERT INTO table SET column1 = value1, column2 = value2
@roadmap_1269_li
#Javadoc search: weight for titles should be higher ('random' should list Functions as the best match).
#Docs: add a one line description for each functions and SQL statements at the top (in the link section).
@roadmap_1270_li
#Replace information_schema tables with regular tables that are automatically re-built when needed. Use indexes.
#Javadoc search: weight for titles should be higher ('random' should list Functions as the best match).
@roadmap_1271_li
#Issue 50: Oracle compatibility: support calling 0-parameters functions without parenthesis. Make constants obsolete.
#Replace information_schema tables with regular tables that are automatically re-built when needed. Use indexes.
@roadmap_1272_li
#MySQL, HSQLDB compatibility: support where 'a'=1 (not supported by Derby, PostgreSQL)
#Issue 50: Oracle compatibility: support calling 0-parameters functions without parenthesis. Make constants obsolete.
@roadmap_1273_li
#Support a data type "timestamp with timezone" using java.util.Calendar.
#MySQL, HSQLDB compatibility: support where 'a'=1 (not supported by Derby, PostgreSQL)
@roadmap_1274_li
#Finer granularity for SLF4J trace - See http://code.google.com/p/h2database/issues/detail?id=62
#Support a data type "timestamp with timezone" using java.util.Calendar.
@roadmap_1275_li
#Add database creation date and time to the database.
#Finer granularity for SLF4J trace - See http://code.google.com/p/h2database/issues/detail?id=62
@roadmap_1276_li
#Optimize A=? OR B=? to UNION if the cost is lower.
#Add database creation date and time to the database.
@roadmap_1277_li
#Support ASSERTION.
...
...
@@ -10507,16 +10546,19 @@ H2 コンソール アプリケーション
@roadmap_1509_li
#Issue 362: LIMIT support for UPDATE statements (MySQL compatibility).
@roadmap_1510_h2
@roadmap_1510_li
#Sybase SQL Anywhere compatibility: SELECT TOP ... START AT ...
@roadmap_1511_h2
#Not Planned
@roadmap_1511_li
@roadmap_1512_li
#HSQLDB (did) support this: select id i from test where i<0 (other databases don't). Supporting it may break compatibility.
@roadmap_1512_li
@roadmap_1513_li
#String.intern (so that Strings can be compared with ==) will not be used because some VMs have problems when used extensively.
@roadmap_1513_li
@roadmap_1514_li
#In prepared statements, identifier names (table names and so on) can not be parameterized. Adding such a feature would complicate the source code without providing reasonable speedup, and would slow down regular prepared statements.
