Change Log

Next Version (unreleased)

PR #806: Implement setBytes() and setString() with offset and len
PR #805: Improve support of TIMESTAMP WITH TIME ZONE
PR #803: Use new ArrayList(Collection) and assertThrows()
PR #802: Use Arrays.copyOf() and Arrays.copyOfRange()
PR #801: Fix NULL support in PgServer for primitive types too
PR #800: More fixes in date-time types for ODBC drivers
PR #798: Add partial support of DATE, TIME, and TIMESTAMP data types to PgServer
PR #799: Use result of ArrayList.remove()
PR #797: Add ceilingKey() and floorKey() to TransactionMap (version 2)
PR #796: Add MDY to DateStyle in PgServerThread
PR #794: Sort files in generated jars
PR #793: Change return type of Value.getBoolean() to boolean (unwrapped)
PR #792: Inherit classpath from parent process
PR #791: Switch to JaCoCo code coverage
PR #788: Update lists of keywords
PR #789: Map DATE in Oracle mode to ValueTimestamp
PR #787: Assorted changes
PR #785: Optimize NULL handling in MVSecondaryIndex.add()
PR #783: Add Bits implementation for Java 9 and later versions
PR #784: Hardcoded port numbers should not be used in unit tests
PR #780: Close JavaFileManager after use.
PR #782: Leftover shared lock after release
PR #781: Locks left behind after commit
PR #778: Reduce code duplication
PR #775: Fix building of documentation and zip
PR #774: Assorted changes
PR #773: Better checks for arguments of partial LOB reading methods
PR #772: getBinaryStream() and getCharacterStream() with pos and length
Issue #754: Make NUMERIC type read as NUMERIC
PR #768: Add DataUtils.parseChecksummedMap()
PR #769: Do not copy result of DataUtils.parseMap() to a new maps
PR #766: Minor clean up of DateTimeUtils
PR #764: Make use of try-with-resources statement
Issue #406: Return from ResultSet.getObject not in line with JDBC specification
Issue #710: Misleading exception message when INSERT has no value for self referential 'AS' column
PR #763: Add DataUtils.getMapName()
PR #762: Add row deletion confirmation to web console
PR #760: Assorted minor optimizations
PR #759: Improve the look of error messages in web console
PR #758: Allocate less amount of garbage
PR #757: Fix handling of UUID in Datatype.readValue()
PR #753: Optimize StringUtils.trim() and remove StringUtils.equals()
PR #752: Use predefined charsets instead of names where possible
PR #750: Use AtomicIntegerArray and StandardCharsets
PR #749: Fix some build checks in sources
Issue #740: TestWeb hangups if webSSL=true specified in configuration
Issue #736: Copyright years in sources
Issue #744: TestFile failure on Java 9 and Java 10
PR #741: More cleanups in LocalDateTimeUtils and other minor changes
PR #743: Change REGEXP_REPLACE mode for MariaDB and PostgreSQL
Issue#646 NPE in CREATE VIEW WITH RECURSIVE & NON_RECURSIVE CTE
PR #738: Copy javadoc to *BackwardsCompat to fix building of documentation
PR #735: Add support of java.time.Instant V2
PR #733: Remove JPA/ORM configuration txt files as they're already integrated
PR #732: Fix ==
PR #730: Implement enquoteIdentifier() and isSimpleIdentifier() from JDBC 4.3
PR #729: Grammar documentation change
PR #727: Integer/Long.compare(x, y) can be used to compare primitive values
PR #726: Fixes in tests
Issue #725: FilePathMem.tryLock() fails since Java 9
PR #723: Clean up LocalDateTimeUtils
PR #724: Use StringBuilder instead of StringBuffer
PR #720: DROP TABLE RESTRICT shouldn't drop foreign keys in other tables
PR #722: Assorted minor changes
Issue #638: Oracle mode: incompatible regexp back-reference syntax
Make ALL a reserved keyword
Issue #311: Avoid calling list.toArray(new X[list.size()]) for performance
PR #715: Better getObject error message
PR #714: SecureRandom is already synchronized
PR #712: Return properly encoded UUID from SimpleResultSet.getBytes()
PR #711: TestFunctions less english dependent
Issue #644: Year changing from negative -509 to a positive 510.
PR #706: SIGNAL function
PR #704: added Javascript support for Triggers' source
Issue #694: Oracle syntax for adding NOT NULL constraint not supported.
Issue #699: When using an index for sorting, the index is ignored when also using NULLS LAST/FIRST
Issue #697: FilePathDisk.newInputStream fails for contextual class loading
Issue #695: jdbc:postgresql protocol connection issue in H2 Console Application in case of redshift driver in classpath
Fix 'file not closed' when using FILE_READ
Fix bug in LinkSchema tool when object exists with same name in different schemas
Issue #675: Fix date operations on Locales with non-Gregorian calendars
Fix removal of LOB when rolling back transaction on a table containing more than one LOB column.
Issue #654: List ENUM type values in INFORMATION_SCHEMA.COLUMNS
Issue #650: Simple nested SELECT causes error for table with TIMESTAMP WITH TIMEZONE column
Issue #654: List ENUM type values in INFORMATION_SCHEMA.COLUMNS
Issue #668: Fail of an update command on large table with ENUM column
Issue #662: column called CONSTRAINT is not properly escaped when storing to metadata
Issue #660: Outdated java version mentioned on http://h2database.com/html/build.html#providing_patches
Issue #643: H2 doesn't use index when I use IN and EQUAL in one query
Reset transaction start timestamp on ROLLBACK
Issue #632: CREATE OR REPLACE VIEW creates incorrect columns names
Issue #630: Integer overflow in CacheLRU can cause unrestricted cache growth
Issue #497: Fix TO_DATE in cases of 'inline' text. E.g. the "T" and "Z" in to_date('2017-04-21T00:00:00Z', 'YYYY-MM-DD"T"HH24:MI:SS"Z"')
Fix bug in MySQL/ORACLE-syntax silently corrupting the modified column in cases of setting the 'NULL'- or 'NOT NULL'-constraint. E.g. alter table T modify C NULL;
Issue #570: MySQL compatibility for ALTER TABLE .. DROP INDEX
Issue #537: Include the COLUMN name in message "Numeric value out of range"
Issue #600: ROW_NUMBER() behaviour change in H2 1.4.195
Fix a bunch of race conditions found by vmlens.com, thank you to vmlens for giving us a license.
PR #597: Support more types in getObject
Issue #591: Generated SQL from WITH-CTEs does not include a table identifier
PR #593: Make it possible to create a cluster without using temporary files.
PR #592: "Connection is broken: "unexpected status 16777216" [90067-192]" message when using older h2 releases as client
Issue #585: MySQL mode DELETE statements compatibility
PR #586: remove extra tx preparation
PR #568: Implement MetaData.getColumns() for synonyms.
Issue #581: org.h2.tools.RunScript assumes -script parameter is part of protocol
Fix a deadlock in the TransactionStore
PR #579: Disallow BLOB type in PostgreSQL mode
Issue #576: Common Table Expression (CTE): WITH supports INSERT, UPDATE, MERGE, DELETE, CREATE TABLE ...
Issue #493: Query with distinct/limit/offset subquery returns unexpected rows
Issue #575: Support for full text search in multithreaded mode
Issue #569: ClassCastException when filtering on ENUM value in WHERE clause
Issue #539: Allow override of builtin functions/aliases
Issue #535: Allow explicit paths on Windows without drive letter
Issue #549: Removed UNION ALL requirements for CTE
Issue #548: Table synonym support
Issue #531: Rollback and delayed meta save.
Issue #515: "Unique index or primary key violation" in TestMvccMultiThreaded
Issue #458: TIMESTAMPDIFF() test failing. Handling of timestamp literals.
PR #546: Fixes the missing file tree.js in the web console
Issue #543: Prepare statement with regexp will not refresh parameter after metadata change
PR #536: Support TIMESTAMP_WITH_TIMEZONE 2014 JDBC type
Fix bug in parsing ANALYZE TABLE xxx SAMPLE_SIZE yyy
Add padding for CHAR(N) values in PostgreSQL mode
Issue #89: Add DB2 timestamp format compatibility

Version 1.4.196 (2017-06-10)

Issue#479 Allow non-recursive CTEs (WITH statements), patch from stumc
Fix startup issue when using "CHECK" as a column name.
Issue #423: ANALYZE performed multiple times on one table during execution of the same statement.
Issue #426: Support ANALYZE TABLE statement
Issue #438: Fix slow logging via SLF4J (TRACE_LEVEL_FILE=4).
Issue #472: Support CREATE SEQUENCE ... ORDER as a NOOP for Oracle compatibility
Issue #479: Allow non-recursive Common Table Expressions (CTE)
On Mac OS X, with IPv6 and no network connection, the Console tool was not working as expected.

Version 1.4.195 (2017-04-23)

Lazy query execution support.
Added API for handling custom data types (System property "h2.customDataTypesHandler", API org.h2.api.CustomDataTypesHandler).
Added support for invisible columns.
Added an ENUM data type, with syntax similar to that of MySQL.
MVStore: for object data types, the cache size memory estimation was sometimes far off in a read-only scenario. This could result in inefficient cache usage.

Version 1.4.194 (2017-03-10)

Issue #453: MVStore setCacheSize() should also limit the cacheChunkRef.
Issue #448: Newly added TO_DATE and TO_TIMESTAMP functions have wrong datatype.
The "nioMemLZF" filesystem now supports an extra option "nioMemLZF:12:" to tweak the size of the compress later cache.
Various multi-threading fixes and optimisations to the "nioMemLZF" filesystem.
[API CHANGE] #439: the JDBC type of TIMESTAMP WITH TIME ZONE changed from Types.OTHER (1111) to Types.TIMESTAMP_WITH_TIMEZONE (2014)
#430: Subquery not cached if number of rows exceeds MAX_MEMORY_ROWS.
#411: "TIMEZONE" should be "TIME ZONE" in type "TIMESTAMP WITH TIMEZONE".
PR #418, Implement Connection#createArrayOf and PreparedStatement#setArray.
PR #427, Add MySQL compatibility functions UNIX_TIMESTAMP, FROM_UNIXTIME and DATE.
#429: Tables not found : Fix some Turkish locale bugs around uppercasing.
Fixed bug in metadata locking, obscure combination of DDL and SELECT SEQUENCE.NEXTVAL required.
Added index hints: SELECT * FROM TEST USE INDEX (idx1, idx2).
Add a test case to ensure that spatial index is used with and order by command by Fortin N.
Fix multi-threaded mode update exception "NullPointerException", test case by Anatolii K.
Fix multi-threaded mode insert exception "Unique index or primary key violation", test case by Anatolii K.
Implement ILIKE operator for case-insensitive matching.
Optimise LIKE queries for the common cases of '%Foo' and '%Foo%'.
Issue #387: H2 MSSQL Compatibility Mode - Support uniqueidentifier.
Issue #401: NPE in "SELECT DISTINCT * ORDER BY".
Added BITGET function.
Fixed bug in FilePathRetryOnInterrupt that caused infinite loop.
PR #389, Handle LocalTime with nanosecond resolution, patch by katzyn.
PR #382, Recover for "page store" H2 breaks LOBs consistency, patch by vitalus.
PR #393, Run tests on Travis, patch by marschall.
Fix bug in REGEX_REPLACE, not parsing the mode parameter.
ResultSet.getObject(..., Class) threw a ClassNotFoundException if the JTS suite was not in the classpath.
File systems: the "cache:" file system, and the compressed in-memory file systems memLZF and nioMemLZF did not correctly support concurrent reading and writing.
TIMESTAMP WITH TIMEZONE: serialization for the PageStore was broken.

Version 1.4.193 (2016-10-31)

PR #386: Add JSR-310 Support (introduces JTS dependency fixed in 1.4.194)
WARNING: THE MERGE BELOW WILL AFFECT ANY 'TIMESTAMP WITH TIMEZONE' INDEXES. You will need to drop and recreate any such indexes.
PR #364: fix compare TIMESTAMP WITH TIMEZONE
Fix bug in picking the right index for INSERT..ON DUPLICATE KEY UPDATE when there are both UNIQUE and PRIMARY KEY constraints.
Issue #380: Error Analyzer doesn't show source code
Remove the "TIMESTAMP UTC" datatype, an experiment that was never finished.
PR #363: Added support to define last IDENTIFIER on a Trigger.
PR #366: Tests for timestamps
PR #361: Improve TimestampWithTimeZone javadoc
PR #360: Change getters in TimestampWithTimeZone to int
PR #359: Added missing source encoding. Assuming UTF-8.
PR #353: Add support for converting JAVA_OBJECT to UUID
PR #358: Add support for getObject(int|String, Class)
PR #357: Server: use xdg-open to open the WebConsole in the user's preferred browser on Linux
PR #356: Support for BEFORE and AFTER clauses when using multiple columns in ALTER TABLE ADD
PR #351: Respect format codes from Bind message when sending results
ignore summary line when compiling stored procedure
PR #348: pg: send RowDescription in response to Describe (statement variant), patch by kostya-sh
PR #337: Update russian translation, patch by avp1983
PR #329: Update to servlet API version 3.1.0 from 3.0.1, patch by Mat Booth
PR #331: ChangeFileEncryption progress logging ignores -quiet flag, patch by Stefan Bodewig
PR #325: Make Row an interface
PR #323: Regular expression functions (REGEXP_REPLACE, REGEXP_LIKE) enhancement, patch by Akkuzin
Use System.nanoTime for measuring query statistics
Issue #324: Deadlock when sending BLOBs over TCP
Fix for creating and accessing views in MULTITHREADED mode, test-case courtesy of Daniel Rosenbaum
Issue #266: Spatial index not updating, fixed by merging PR #267
PR #302: add support for "with"-subqueries into "join" & "sub-query" statements
Issue #299: Nested derived tables did not always work as expected.
Use interfaces to replace the java version templating, idea from Lukas Eder.
Issue #295: JdbcResultSet.getObject(int, Class) returns null instead of throwing.
Mac OS X: Console tool process did not stop on exit.
MVStoreTool: add "repair" feature.
Garbage collection of unused chunks should be faster still.
MVStore / transaction store: opening a store in read-only mode does no longer loop.
MVStore: disabled the file system cache by default, because it limits concurrency when using larger databases and many threads. To re-enable, use the file name prefix "cache:".
MVStore: add feature to set the cache concurrency.
File system nioMemFS: support concurrent reads.
File systems: the compressed in-memory file systems now compress better.
LIRS cache: improved hit rate because now added entries get hot if they were in the non-resident part of the cache before.

Version 1.4.192 Beta (2016-05-26)

Java 6 is no longer supported (the jar files are compiled for Java 7).
Garbage collection of unused chunks should now be faster.
Prevent people using unsupported combination of auto-increment columns and clustering mode.
Support for DB2 time format, patch by Niklas Mehner
Added support for Connection.setClientInfo() in compatibility modes for DB2, Postgresql, Oracle and MySQL.
Issue #249: Clarify license declaration in Maven POM xml
Fix NullPointerException in querying spatial data through a sub-select.
Fix bug where a lock on the SYS table was not released when closing a session that contained a temp table with an LOB column.
Issue #255: ConcurrentModificationException with multiple threads in embedded mode and temporary LOBs
Issue #235: Anonymous SSL connections fail in many situations
Fix race condition in FILE_LOCK=SOCKET, which could result in the watchdog thread not running
Experimental support for datatype TIMESTAMP WITH TIMEZONE
Add support for ALTER TABLE ... RENAME CONSTRAINT .. TO ...
Add support for PostgreSQL ALTER TABLE ... RENAME COLUMN .. TO ...
Add support for ALTER SCHEMA [ IF EXISTS ]
Add support for ALTER TABLE [ IF EXISTS ]
Add support for ALTER VIEW [ IF EXISTS ]
Add support for ALTER INDEX [ IF EXISTS ]
Add support for ALTER SEQUENCE [ IF EXISTS ]
Improve performance of cleaning up temp tables - patch from Eric Faulhaber.
Fix bug where table locks were not dropped when the connection closed
Fix extra CPU usage caused by query planner enhancement in 1.4.191
improve performance of queries that use LIKE 'foo%' - 10x in the case of one of my queries
The function IFNULL did not always return the result in the right data type.
Issue #231: Possible infinite loop when initializing the ObjectDataType class when concurrently writing into MVStore.

Version 1.4.191 Beta (2016-01-21)

TO_DATE and TO_TIMESTAMP functions. Thanks a lot to Sam Blume for the patch!
Issue #229: DATEDIFF does not work for 'WEEK'.
Issue #156: Add support for getGeneratedKeys() when executing commands via PreparedStatement#executeBatch.
Issue #195: The new Maven uses a .cmd file instead of a .bat file.
Issue #212: EXPLAIN PLAN for UPDATE statement did not display LIMIT expression.
Support OFFSET without LIMIT in SELECT.
Improve error message for METHOD_NOT_FOUND_1/90087.
CLOB and BLOB objects of removed rows were sometimes kept in the database file.
Server mode: executing "shutdown" left a thread on the server.
The condition "in(select...)" did not work correctly in some cases if the subquery had an "order by".
Issue #184: The Platform-independent zip had Windows line endings in Linux scripts.
Issue #186: The "script" command did not include sequences of temporary tables.
Issue #115: to_char fails with pattern FM0D099.

Version 1.4.190 Beta (2015-10-11)

Pull request #183: optimizer hints (so far without special SQL syntax).
Issue #180: In MVCC mode, executing UPDATE and SELECT ... FOR UPDATE simultaneously silently can drop rows.
PageStore storage: the cooperative file locking mechanism did not always work as expected (with very slow computers).
Temporary CLOB and BLOB objects are now removed while the database is open (and not just when closing the database).
MVStore CLOB and BLOB larger than about 25 MB: An exception could be thrown when using the MVStore storage.
Add FILE_WRITE function. Patch provided by Nicolas Fortin (Lab-STICC - CNRS UMR 6285 and Ecole Centrale de Nantes)