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Change Log
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<h1>Change Log</h1>

<h2>Next Version (unreleased)</h2>
<ul>
<li>PR #967: Adds ARRAY_AGG()
</li>
<li>PR #806: Implement setBytes() and setString() with offset and len
</li>
<li>PR #805: Improve support of TIMESTAMP WITH TIME ZONE
</li>
<li>PR #803: Use new ArrayList(Collection) and assertThrows()
</li>
<li>PR #802: Use Arrays.copyOf() and Arrays.copyOfRange()
</li>
<li>PR #801: Fix NULL support in PgServer for primitive types too
</li>
<li>PR #800: More fixes in date-time types for ODBC drivers
</li>
<li>PR #798: Add partial support of DATE, TIME, and TIMESTAMP data types to PgServer
</li>
<li>PR #799: Use result of ArrayList.remove()
</li>
<li>PR #797: Add ceilingKey() and floorKey() to TransactionMap (version 2)
</li>
<li>PR #796: Add MDY to DateStyle in PgServerThread
</li>
<li>PR #794: Sort files in generated jars
</li>
<li>PR #793: Change return type of Value.getBoolean() to boolean (unwrapped)
</li>
<li>PR #792: Inherit classpath from parent process
</li>
<li>PR #791: Switch to JaCoCo code coverage
</li>
<li>PR #788: Update lists of keywords
</li>
<li>PR #789: Map DATE in Oracle mode to ValueTimestamp
</li>
<li>PR #787: Assorted changes
</li>
<li>PR #785: Optimize NULL handling in MVSecondaryIndex.add()
</li>
<li>PR #783: Add Bits implementation for Java 9 and later versions
</li>
<li>PR #784: Hardcoded port numbers should not be used in unit tests
</li>
<li>PR #780: Close JavaFileManager after use.
</li>
<li>PR #782: Leftover shared lock after release
</li>
<li>PR #781: Locks left behind after commit
</li>
<li>PR #778: Reduce code duplication
</li>
<li>PR #775: Fix building of documentation and zip
</li>
<li>PR #774: Assorted changes
</li>
<li>PR #773: Better checks for arguments of partial LOB reading methods
</li>
<li>PR #772: getBinaryStream() and getCharacterStream() with pos and length
</li>
<li>Issue #754: Make NUMERIC type read as NUMERIC
</li>
<li>PR #768: Add DataUtils.parseChecksummedMap()
</li>
<li>PR #769: Do not copy result of DataUtils.parseMap() to a new maps
</li>
<li>PR #766: Minor clean up of DateTimeUtils
</li>
<li>PR #764: Make use of try-with-resources statement
</li>
<li>Issue #406: Return from ResultSet.getObject not in line with JDBC specification
</li>
<li>Issue #710: Misleading exception message when INSERT has no value for self referential 'AS' column
</li>
<li>PR #763: Add DataUtils.getMapName()
</li>
<li>PR #762: Add row deletion confirmation to web console
</li>
<li>PR #760: Assorted minor optimizations
</li>
<li>PR #759: Improve the look of error messages in web console
</li>
<li>PR #758: Allocate less amount of garbage
</li>
<li>PR #757: Fix handling of UUID in Datatype.readValue()
</li>
<li>PR #753: Optimize StringUtils.trim() and remove StringUtils.equals()
</li>
<li>PR #752: Use predefined charsets instead of names where possible
</li>
<li>PR #750: Use AtomicIntegerArray and StandardCharsets
</li>
<li>PR #749: Fix some build checks in sources
</li>
<li>Issue #740: TestWeb hangups if webSSL=true specified in configuration
</li>
<li>Issue #736: Copyright years in sources
</li>
<li>Issue #744: TestFile failure on Java 9 and Java 10
</li>
<li>PR #741: More cleanups in LocalDateTimeUtils and other minor changes
</li>
<li>PR #743: Change REGEXP_REPLACE mode for MariaDB and PostgreSQL
</li>
<li>Issue#646 NPE in CREATE VIEW WITH RECURSIVE & NON_RECURSIVE CTE
</li>
<li>PR #738: Copy javadoc to *BackwardsCompat to fix building of documentation
</li>
<li>PR #735: Add support of java.time.Instant V2
</li>
<li>PR #733: Remove JPA/ORM configuration txt files as they're already integrated
</li>
<li>PR #732: Fix ==
</li>
<li>PR #730: Implement enquoteIdentifier() and isSimpleIdentifier() from JDBC 4.3
</li>
<li>PR #729: Grammar documentation change
</li>
<li>PR #727: Integer/Long.compare(x, y) can be used to compare primitive values
</li>
<li>PR #726: Fixes in tests
</li>
<li>Issue #725: FilePathMem.tryLock() fails since Java 9
</li>
<li>PR #723: Clean up LocalDateTimeUtils
</li>
<li>PR #724: Use StringBuilder instead of StringBuffer
</li>
<li>PR #720: DROP TABLE RESTRICT shouldn't drop foreign keys in other tables
</li>
<li>PR #722: Assorted minor changes
</li>
<li>Issue #638: Oracle mode: incompatible regexp back-reference syntax
</li>
<li>Make ALL a reserved keyword
</li>
<li>Issue #311: Avoid calling list.toArray(new X[list.size()]) for performance
</li>
<li>PR #715: Better getObject error message
</li>
<li>PR #714: SecureRandom is already synchronized
</li>
<li>PR #712: Return properly encoded UUID from SimpleResultSet.getBytes()
</li>
<li>PR #711: TestFunctions less english dependent
</li>
<li>Issue #644: Year changing from negative -509 to a positive 510.
</li>
<li>PR #706: SIGNAL function
</li>
<li>PR #704: added Javascript support for Triggers' source
</li>
<li>Issue #694: Oracle syntax for adding NOT NULL constraint not supported.
</li>
<li>Issue #699: When using an index for sorting, the index is ignored when also using NULLS LAST/FIRST
</li>
<li>Issue #697: FilePathDisk.newInputStream fails for contextual class loading
</li>
<li>Issue #695: jdbc:postgresql protocol connection issue in H2 Console Application in case of redshift driver in classpath
</li>
<li>Fix 'file not closed' when using FILE_READ
</li>
<li>Fix bug in LinkSchema tool when object exists with same name in different schemas
</li>
<li>Issue #675: Fix date operations on Locales with non-Gregorian calendars
</li>
<li>Fix removal of LOB when rolling back transaction on a table containing more than one LOB column.
</li>
<li>Issue #654: List ENUM type values in INFORMATION_SCHEMA.COLUMNS
</li>
<li>Issue #650: Simple nested SELECT causes error for table with TIMESTAMP WITH TIMEZONE column
</li>
<li>Issue #654: List ENUM type values in INFORMATION_SCHEMA.COLUMNS
</li>
<li>Issue #668: Fail of an update command on large table with ENUM column
</li>
<li>Issue #662: column called CONSTRAINT is not properly escaped when storing to metadata
</li>
<li>Issue #660: Outdated java version mentioned on http://h2database.com/html/build.html#providing_patches
</li>
<li>Issue #643: H2 doesn't use index when I use IN and EQUAL in one query
</li>
<li>Reset transaction start timestamp on ROLLBACK
</li>
<li>Issue #632: CREATE OR REPLACE VIEW creates incorrect columns names
</li>
<li>Issue #630: Integer overflow in CacheLRU can cause unrestricted cache growth
</li>
<li>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"')
</li>
<li>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;
</li>
<li>Issue #570: MySQL compatibility for ALTER TABLE .. DROP INDEX
</li>
<li>Issue #537: Include the COLUMN name in message "Numeric value out of range"
</li>
<li>Issue #600: ROW_NUMBER() behaviour change in H2 1.4.195
</li>
<li>Fix a bunch of race conditions found by vmlens.com, thank you to vmlens for giving us a license.
</li>
<li>PR #597: Support more types in getObject
</li>
<li>Issue #591: Generated SQL from WITH-CTEs does not include a table identifier
</li>
<li>PR #593: Make it possible to create a cluster without using temporary files.
</li>
<li>PR #592: "Connection is broken: "unexpected status 16777216" [90067-192]" message when using older h2 releases as client
</li>
<li>Issue #585: MySQL mode DELETE statements compatibility
</li>
<li>PR #586: remove extra tx preparation
</li>
<li>PR #568: Implement MetaData.getColumns() for synonyms.
</li>
<li>Issue #581: org.h2.tools.RunScript assumes -script parameter is part of protocol
</li>
<li>Fix a deadlock in the TransactionStore
</li>
<li>PR #579: Disallow BLOB type in PostgreSQL mode
</li>
<li>Issue #576: Common Table Expression (CTE): WITH supports INSERT, UPDATE, MERGE, DELETE, CREATE TABLE ...
</li>
<li>Issue #493: Query with distinct/limit/offset subquery returns unexpected rows
</li>
<li>Issue #575: Support for full text search in multithreaded mode
</li>
<li>Issue #569: ClassCastException when filtering on ENUM value in WHERE clause
</li>
<li>Issue #539: Allow override of builtin functions/aliases
</li>
<li>Issue #535: Allow explicit paths on Windows without drive letter
</li>
<li>Issue #549: Removed UNION ALL requirements for CTE
</li>
<li>Issue #548: Table synonym support
</li>
<li>Issue #531: Rollback and delayed meta save.
</li>
<li>Issue #515: "Unique index or primary key violation" in TestMvccMultiThreaded
</li>
<li>Issue #458: TIMESTAMPDIFF() test failing. Handling of timestamp literals.
</li>
<li>PR #546: Fixes the missing file tree.js in the web console
</li>
<li>Issue #543: Prepare statement with regexp will not refresh parameter after metadata change
</li>
<li>PR #536: Support TIMESTAMP_WITH_TIMEZONE 2014 JDBC type
</li>
<li>Fix bug in parsing ANALYZE TABLE xxx SAMPLE_SIZE yyy
</li>
<li>Add padding for CHAR(N) values in PostgreSQL mode
</li>
<li>Issue #89: Add DB2 timestamp format compatibility
</li>
</ul>

<h2>Version 1.4.196 (2017-06-10)</h2>
<ul>
<li>Issue#479 Allow non-recursive CTEs (WITH statements), patch from stumc
</li>
<li>Fix startup issue when using "CHECK" as a column name.
</li>
<li>Issue #423: ANALYZE performed multiple times on one table during execution of the same statement.
</li>
<li>Issue #426: Support ANALYZE TABLE statement
</li>
<li>Issue #438: Fix slow logging via SLF4J (TRACE_LEVEL_FILE=4).
</li>
<li>Issue #472: Support CREATE SEQUENCE ... ORDER as a NOOP for Oracle compatibility
</li>
<li>Issue #479: Allow non-recursive Common Table Expressions (CTE)
</li>
<li>On Mac OS X, with IPv6 and no network connection, the Console tool was not working as expected.
</li>
</ul>

<h2>Version 1.4.195 (2017-04-23)</h2>
<ul>
<li>Lazy query execution support.
</li>
<li>Added API for handling custom data types (System property "h2.customDataTypesHandler", API org.h2.api.CustomDataTypesHandler).
</li>
<li>Added support for invisible columns.
</li>
<li>Added an ENUM data type, with syntax similar to that of MySQL.
</li>
<li>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.
</li>
</ul>

<h2>Version 1.4.194 (2017-03-10)</h2>
<ul>
<li>Issue #453: MVStore setCacheSize() should also limit the cacheChunkRef.
</li>
<li>Issue #448: Newly added TO_DATE and TO_TIMESTAMP functions have wrong datatype.
</li>
<li>The "nioMemLZF" filesystem now supports an extra option "nioMemLZF:12:" to tweak the size of the compress later cache.
</li>
<li>Various multi-threading fixes and optimisations to the "nioMemLZF" filesystem.
</li>
<li><strong>[API CHANGE]</strong> #439: the JDBC type of TIMESTAMP WITH TIME ZONE
changed from Types.OTHER (1111) to Types.TIMESTAMP_WITH_TIMEZONE (2014)
</li>
<li>#430: Subquery not cached if number of rows exceeds MAX_MEMORY_ROWS.
</li>
<li>#411: "TIMEZONE" should be "TIME ZONE" in type "TIMESTAMP WITH TIMEZONE".
</li>
<li>PR #418, Implement Connection#createArrayOf and PreparedStatement#setArray.
</li>
<li>PR #427, Add MySQL compatibility functions UNIX_TIMESTAMP, FROM_UNIXTIME and DATE.
</li>
<li>#429: Tables not found : Fix some Turkish locale bugs around uppercasing.
</li>
<li>Fixed bug in metadata locking, obscure combination of DDL and SELECT SEQUENCE.NEXTVAL required.
</li>
<li>Added index hints: SELECT * FROM TEST USE INDEX (idx1, idx2).
</li>
<li>Add a test case to ensure that spatial index is used with and order by command by Fortin N.
</li>
<li>Fix multi-threaded mode update exception "NullPointerException", test case by Anatolii K.
</li>
<li>Fix multi-threaded mode insert exception "Unique index or primary key violation", test case by Anatolii K.
</li>
<li>Implement ILIKE operator for case-insensitive matching.
</li>
<li>Optimise LIKE queries for the common cases of '%Foo' and '%Foo%'.
</li>
<li>Issue #387: H2 MSSQL Compatibility Mode - Support uniqueidentifier.
</li>
<li>Issue #401: NPE in "SELECT DISTINCT * ORDER BY".
</li>
<li>Added BITGET function.
</li>
<li>Fixed bug in FilePathRetryOnInterrupt that caused infinite loop.
</li>
<li>PR #389, Handle LocalTime with nanosecond resolution, patch by katzyn.
</li>
<li>PR #382, Recover for "page store" H2 breaks LOBs consistency, patch by vitalus.
</li>
<li>PR #393, Run tests on Travis, patch by marschall.
</li>
<li>Fix bug in REGEX_REPLACE, not parsing the mode parameter.
</li>
<li>ResultSet.getObject(..., Class) threw a ClassNotFoundException if the JTS suite was not in the classpath.
</li>
<li>File systems: the "cache:" file system, and the
    compressed in-memory file systems memLZF and nioMemLZF did not
    correctly support concurrent reading and writing.
</li>
<li>TIMESTAMP WITH TIMEZONE: serialization for the PageStore was broken.
</li>
</ul>

<h2>Version 1.4.193 (2016-10-31)</h2>
<ul>
<li>PR #386: Add JSR-310 Support (introduces JTS dependency fixed in 1.4.194)
</li>
<li>WARNING: THE MERGE BELOW WILL AFFECT ANY 'TIMESTAMP WITH TIMEZONE' INDEXES. You will need to drop and recreate any such indexes.
</li>
<li>PR #364: fix compare TIMESTAMP WITH TIMEZONE
</li>
<li>Fix bug in picking the right index for INSERT..ON DUPLICATE KEY UPDATE when there are both UNIQUE and PRIMARY KEY constraints.
</li>
<li>Issue #380: Error Analyzer doesn't show source code
</li>
<li>Remove the "TIMESTAMP UTC" datatype, an experiment that was never finished.
</li>
<li>PR #363: Added support to define last IDENTIFIER on a Trigger.
</li>
<li>PR #366: Tests for timestamps
</li>
<li>PR #361: Improve TimestampWithTimeZone javadoc
</li>
<li>PR #360: Change getters in TimestampWithTimeZone to int
</li>
<li>PR #359: Added missing source encoding. Assuming UTF-8.
</li>
<li>PR #353: Add support for converting JAVA_OBJECT to UUID
</li>
<li>PR #358: Add support for getObject(int|String, Class)
</li>
<li>PR #357: Server: use xdg-open to open the WebConsole in the user's preferred browser on Linux
</li>
<li>PR #356: Support for BEFORE and AFTER clauses when using multiple columns in ALTER TABLE ADD
</li>
<li>PR #351: Respect format codes from Bind message when sending results
</li>
<li>ignore summary line when compiling stored procedure
</li>
<li>PR #348: pg: send RowDescription in response to Describe (statement variant), patch by kostya-sh
</li>
<li>PR #337: Update russian translation, patch by avp1983
</li>
<li>PR #329: Update to servlet API version 3.1.0 from 3.0.1, patch by Mat Booth
</li>
<li>PR #331: ChangeFileEncryption progress logging ignores -quiet flag, patch by Stefan Bodewig
</li>
<li>PR #325: Make Row an interface
</li>
<li>PR #323: Regular expression functions (REGEXP_REPLACE, REGEXP_LIKE) enhancement, patch by Akkuzin
</li>
<li>Use System.nanoTime for measuring query statistics
</li>
<li>Issue #324: Deadlock when sending BLOBs over TCP
</li>
<li>Fix for creating and accessing views in MULTITHREADED mode, test-case courtesy of Daniel Rosenbaum
</li>
<li>Issue #266: Spatial index not updating, fixed by merging PR #267
</li>
<li>PR #302: add support for "with"-subqueries into "join" & "sub-query" statements
</li>
<li>Issue #299: Nested derived tables did not always work as expected.
</li>
<li>Use interfaces to replace the java version templating, idea from Lukas Eder.
</li>
<li>Issue #295: JdbcResultSet.getObject(int, Class) returns null instead of throwing.
</li>
<li>Mac OS X: Console tool process did not stop on exit.
</li>
<li>MVStoreTool: add "repair" feature.
</li>
<li>Garbage collection of unused chunks should be faster still.
</li>
<li>MVStore / transaction store: opening a store in read-only mode does no longer loop.
</li>
<li>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:".
</li>
<li>MVStore: add feature to set the cache concurrency.
</li>
<li>File system nioMemFS: support concurrent reads.
</li>
<li>File systems: the compressed in-memory file systems now compress better.
</li>
<li>LIRS cache: improved hit rate because now added entries get hot if they
    were in the non-resident part of the cache before.
</li>
</ul>

<h2>Version 1.4.192 Beta (2016-05-26)</h2>
<ul>
<li>Java 6 is no longer supported (the jar files are compiled for Java 7).
</li>
<li>Garbage collection of unused chunks should now be faster.
</li>
<li>Prevent people using unsupported combination of auto-increment columns and clustering mode.
</li>
<li>Support for DB2 time format, patch by Niklas Mehner
</li>
<li>Added support for Connection.setClientInfo() in compatibility modes for DB2, Postgresql, Oracle and MySQL.
</li>
<li>Issue #249: Clarify license declaration in Maven POM xml
</li>
<li>Fix NullPointerException in querying spatial data through a sub-select.
</li>
<li>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.
</li>
<li>Issue #255: ConcurrentModificationException with multiple threads in embedded mode and temporary LOBs
</li>
<li>Issue #235: Anonymous SSL connections fail in many situations
</li>
<li>Fix race condition in FILE_LOCK=SOCKET, which could result in the watchdog thread not running
</li>
<li>Experimental support for datatype TIMESTAMP WITH TIMEZONE
</li>
<li>Add support for ALTER TABLE ... RENAME CONSTRAINT .. TO ...
</li>
<li>Add support for PostgreSQL ALTER TABLE ... RENAME COLUMN .. TO ...
</li>
<li>Add support for ALTER SCHEMA [ IF EXISTS ]
</li>
<li>Add support for ALTER TABLE [ IF EXISTS ]
</li>
<li>Add support for ALTER VIEW [ IF EXISTS ]
</li>
<li>Add support for ALTER INDEX [ IF EXISTS ]
</li>
<li>Add support for ALTER SEQUENCE [ IF EXISTS ]
</li>
<li>Improve performance of cleaning up temp tables - patch from Eric Faulhaber.
</li>
<li>Fix bug where table locks were not dropped when the connection closed
</li>
<li>Fix extra CPU usage caused by query planner enhancement in 1.4.191
</li>
<li>improve performance of queries that use LIKE 'foo%' - 10x in the case of one of my queries
</li>
<li>The function IFNULL did not always return the result in the right data type.
</li>
<li>Issue #231: Possible infinite loop when initializing the ObjectDataType class
    when concurrently writing into MVStore.
</li>
</ul>

<h2>Version 1.4.191 Beta (2016-01-21)</h2>
<ul>
<li>TO_DATE and TO_TIMESTAMP functions. Thanks a lot to Sam Blume for the patch!
</li>
<li>Issue #229: DATEDIFF does not work for 'WEEK'.
</li>
<li>Issue #156: Add support for getGeneratedKeys() when executing commands via PreparedStatement#executeBatch.
</li>
<li>Issue #195: The new Maven uses a .cmd file instead of a .bat file.
</li>
<li>Issue #212: EXPLAIN PLAN for UPDATE statement did not display LIMIT expression.
</li>
<li>Support OFFSET without LIMIT in SELECT.
</li>
<li>Improve error message for METHOD_NOT_FOUND_1/90087.
</li>
<li>CLOB and BLOB objects of removed rows were sometimes kept in the database file.
</li>
<li>Server mode: executing "shutdown" left a thread on the server.
</li>
<li>The condition "in(select...)" did not work correctly in some cases if the subquery had an "order by".
</li>
<li>Issue #184: The Platform-independent zip had Windows line endings in Linux scripts.
</li>
<li>Issue #186: The "script" command did not include sequences of temporary tables.
</li>
<li>Issue #115: to_char fails with pattern FM0D099.
</li>
</ul>

<h2>Version 1.4.190 Beta (2015-10-11)</h2>
<ul>
<li>Pull request #183: optimizer hints (so far without special SQL syntax).
</li>
<li>Issue #180: In MVCC mode, executing UPDATE and SELECT ... FOR UPDATE
    simultaneously silently can drop rows.
</li>
<li>PageStore storage: the cooperative file locking mechanism
    did not always work as expected (with very slow computers).
</li>
<li>Temporary CLOB and BLOB objects are now removed while the database is open
    (and not just when closing the database).
</li>
<li>MVStore CLOB and BLOB larger than about 25 MB: An exception could be thrown
    when using the MVStore storage.
</li>
<li>Add FILE_WRITE function. Patch provided by Nicolas Fortin
    (Lab-STICC - CNRS UMR 6285 and Ecole Centrale de Nantes)
</li>
</ul>

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