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Home Download Cheat Sheet Documentation Quickstart Installation Tutorial Features Performance Advanced Reference Commands Functions Data Types SQL Grammar System Tables Javadoc PDF (1.5 MB) Support FAQ Error Analyzer Google Group (English) Google Group (Japanese) Google Group (Chinese) Appendix History & Roadmap License Build Links MVStore Architecture |  | # Change Log ## Next Version (unreleased) - ## Version 1.4.199 (2019-03-13) PR #1807: Reduce code duplication and remove h2.mixedGeometries PR #1806: Improve SELECT FOR UPDATE documentation PR #1804: Lift limit of 10 characters on enum value (1.4.198 regression) PR #1803: Do not rely on index sorting in SELECT FOR UPDATE Issue #1800: Remove experimental status from window functions PR #1799: Fire triggers after row locking and remove some leftovers PR #1798: Reuse some string builders, remove StatementBuilder and other minor changes Issue #1795: 1.4.198 regression with batch updates and transactions PR #1794: Ask password in Shell in secure way and improve database creation information in tutorial PR #1791: Move commands to commands.html and other changes Issue #1774: H2 Browser configuration is unclear and fails on KUbuntu PR #1790: Do not convert standard TRIM function to non-standard functions Issue #1787: Non-standard MERGE throws LOCK_TIMEOUT_1 on violation of some constraints PR #1784: improve database not found error Issue #1740: Enhancement Request: h2 server: do not swallow exceptions Issue #1616: Metadata and scripts should be persisted with unconditionally quoted identifiers PR #1779: Improve isSimpleIdentifier() and enquoteIdentifier() PR #1776: Improve DATABASE_TO_LOWER handling Issue #1771: NPE in Comparison.createIndexConditions PR #1772: Fix newlines in test scripts Issue #1762: NullPointerException in Parser. Introduced in 1.4.198 PR #1768: Add more context-sensitive keywords Issue #1758: sequence restart issue with 1.4.198 Issue #1759: SELECT … FOR UPDATE returns old data in 1.4.198 PR #1756: Fix DISTINCT ON in presence of ORDER BY PR #1754: Fix window functions in JOIN with ON condition Issue #1751: making it easier to open console and create local databases Issue #1750: JOIN t ON t.col IN (SELECT ...) throws AssertionError ## Version 1.4.198 (2019-02-22) Issue #1746: Infinite loop in TestConcurrent.testConcurrentChangeAndGetVersion() Issue #1739: Table and view names not case sensitive when using DATABASE_TO_UPPER=FALSE Issue #848: H2 PostgreSQL Compatibility Mode: lowercase metadata Issue #485: Problem is in invalid case for schema's IGNORECASE=true;DATABASE_TO_UPPER=false Issue #1742, PR #1743: Assorted small changes PR #1738: Reduce memory allocation in getSQL() methods PR #1737: more javadoc updates Issue #1735: Creating views with DATABASE_TO_UPPER=FALSE fails Issue #1732: source.html does not work Issue #1730: Show error in H2 Console if specified driver is not compatible with URL Issue #1590: Error on executing "DELETE FROM table1 WHERE ID = ?; DELETE FROM table2 WHERE ID = ?;" Issue #1727: Support ISODOW as identifier for the extract function additional to ISO_DAY_OF_WEEK PR #1580, #1726: Disable remote database creation by default PR #1725: Add partial implementation of standard LISTAGG aggregate function PR #1722: Fix window definition lookup in some queries PR #1721: Fix derived column list in complex queries Issue #1718: Window function and values clause don't work well together Issue #1592: Index out of bounds exception in Page.getKey() PR #1716: Improve documentation of some DML commands Issue #1715: Postgres mode: Domain "regproc" already exists PR #1714: Assorted changes PR #1713: Remove DataType.defaultDisplaySize and fix display size in TypeInfo PR #1711: Add QUALIFY clause to SELECT command Issue #1708: CREATE TABLE AS doesn't support column lists without data types PR #1707: Fix sort order and ENUM data type in external results PR #1706: Add hypothetical set functions PR #1705: Fix GROUP_CONCAT with variable separator PR #1704: Fix return type of PERCENTILE_CONT and MEDIAN PR #1701: Add PERCENTILE_CONT and PERCENTILE_DISC inverse distribution functions Issues #1297, #1697: Failure on concurrent session closure Issue #1297: removeOldTempIndexes on PageStore causes NullPointerException Issue #1354: TestCrashAPI: another NPE PR #1695: Reduce memory for TestMVTempResult to 64m Issue #1691: Append mode causes OOME in MVPlainTempResult PR #1692: Use MVTempResult unconditionally Issue #1689: Use separate constants for data types in Data, ValueDataType, and Transfer PR #1687: MVMap minor cleanup PR #1686: Fix a regression with ENUM data type PR #1685: Fix CHAR in PostgreSQL mode and refactor some code Issue #1681: IN () doesn't work with row values when data types are not exactly the same Issue #1320: OOME / GC overhead in IndexCursor.nextCursor() PR #1680: Assorted fixes for ALTER TABLE ALTER COLUMN PR #1679: Use TestScript for testSimple Issue #1677: Unable to use VALUES keyword in WHERE clause Issue #1672: Deadlock on MVStore close in TestOutOfMemory Issue #1665: TestCrashAPI: NPE with ENUM in MINUS operator Issue #1602: Combine type, precision, scale, display size and extTypeInfo into one object PR #1671: Assorted changes Issue #1668: MySQL compatibility DATE() function should return NULL on error Issue #1604: TestCrashAPI: PreparedStatement.getGeneratedKeys() is already closed PR #1667: Detect NULL values and overflow in window frame bounds PR #1664: Allow any expressions in window frames Issue #1576: H2 Console should not display precision and scale for data types that don't have them PR #1662: Fix Alter Table Drop Column In View when table name is wrapped by Double Quotes PR #1660: Optimize window aggregates with AND UNBOUNDED FOLLOWING and no exclusions PR #1658: Assorted small changes PR #1657: Failure to stop background thread PR #1656: Optimize window aggregates with ORDER BY + UNBOUNDED PRECEDING + no exclusions Issue #1654: OOM in TestMemoryUsage, in big mode Issue #1651: TIMESTAMP values near DST may be changed in MVStore database due to UTC-based PageStore format in some temporary storages PR #1650: Fix race in MVStore.close() Issue #1212: TestDiskFull: The file is locked PR #1648: Add functions ARRAY_CAT(), ARRAY_APPEND() and ARRAY_SLICE() PR #1646: In preparation to a release PR #1643: more javadoc update PR #1642: update javadoc PR #1641: Update copyright years PR #1640: Suggest ANY(?) instead of variable IN() again PR #1638: Add support for Java 11 to test suite PR #1637: Remove explicit unboxing PR #1635: Optimize UUID to VARCHAR conversion and use correct time check in Engine.openSession() Issue #1632: TestMVTableEngine failure PR #1631: Prepare to release: javadoc cleanup PR #1630: fix duplicate words typos in comments and javadoc PR #1627: Use lock to protect append buffer Issue #1618: GROUP BY does not work with two identical columns in selected expressions Issue #1619: Two-phase commit regression in MASTER PR #1626: fix doc PR #1625: Prepare to release: javadoc cleanup, fix maven build, fix javadoc build Issue #1620: UUIDs are unexpectedly sorted as signed PR #1614: Use bulk .addAll() operation PR #1613: Add explicit table query Issue #1608: ARRAY and row value expression should not be the same Issue #1606: Quantified comparison predicate doesn't work correctly on primary key column Issue #1057: Very slow execution with subquery and connection parameter LAZY_QUERY_EXECUTION=1 Issue #1072: Very slow execution with join and connection parameter LAZY_QUERY_EXECUTION=1 PR #1601: Return BIGINT from ROWNUM(), ROW_NUMBER() and rank functions PR #1599: cleanup StringUtils.cache PR #1598: Minor changes in parser and documentation PR #1597: Remove SysProperties.CHECK preconditions around simple assertions PR #1596: Improve SQL Standard compliance in LOB precision parsing Issue #1594: DBSettings.optimizeIsNull and dead code in IndexCursor.getMax() PR #1591: Use multi-catch java 7 language construction to simplify code Issue #1582: h2 not using best index for >= PR #1588: Add support for java.time.Period Issue #446: FILE_READ from classpath not working because of 0 byte file length PR #1579: fix unintentional append mode disruption Issue #1573: DELETE FROM w/ ROWNUM and subquery Issue #187: SHUTDOWN DEFRAG corrupts splitted file database PR #1571: Optimizing ConditionAndOr queries Issue #1565: SOME / ANY conflict PR #1564: Refactor Expression implementations Issue #1561: Incorrect documentation and strange fallback value of SysProperties.FILE_ENCODING Issue #1566: MVStore implements Closeable/AutoCloseable Issue #1550: OutOfMemoryError during "shutdown defrag" Issue #1440: OOM when executing "shutdown compact" in server mode Issue #1561: Incorrect documentation and strange fallback value of SysProperties.FILE_ENCODING PR #1557: increase lock timeout to TestConcurrentUpdate due to Travis failures Issue #1554: REGEXP_REPLACE - accept 'g' flag in PostgreSQL compatibility mode Issue #950: Comparison between databases in README.md and in features.html Issue #1549: [RFE] Implement locking modes (select for update) PR #1548: Add AsynchronousFileChannel-based experimental FilePathAsync PR #1547: Speedup unused chunks collection PR #1546: Tiny optimization: use `System.arraycopy` when possible PR #1545: Export datetime value functions to SQL using standard syntax Issue #1371: NPE in CacheLRU Issue #1534: Typo in message Issue #1527: Parser performance: Excessive use of regular expressions to validate column names PR #1543: MVStore assorted re-factorings PR #1538: Add support for newer Lucene versions without recompilation Issue #1536: CURRENT_TIMESTAMP result doesn't change under Transactions Issue #239: Consider supporting Lucene 5 indexes PR #1520: Fixes bug in PutIfAbsentDecisionMaker Issue #1518: ENUM and VIEW with filtering on enum column Issue #1516: Array element reference array[index] should be 1-based Issue #1512: TestMVTableEngine.testLowRetentionTime(): NPE in VersionedValue.Type PR #1513: Assorted minor changes PR #1510: Add optional EXCEPT clause to wildcards PR #1509: Use domain term everywhere Issue #1507: Add INFORMATION_SCHEMA.COLUMNS.COLUMN_TYPE qualification for domains Issue #1499: TestScript::envelope.sql failure in “big” mode Issue #1498: NPE in SimpleResultSet.getColumnCount() Issue #1495: MERGE statement doesn't affect any rows when Oracle UPDATE .. WHERE .. DELETE .. WHERE is used Issue #1493: MERGE statement fails when it updates more than one row Issue #1492: Unnecessary restriction on MERGE USING statement when ON clause doesn't reference any target table columns Issue #1491: Unnecessary restriction on MERGE USING statement when ON predicate doesn't match inserted row Issue #1490: NullPointerException when running invalid MERGE statement Issue #1489: MERGE USING documentation has misleading railroad diagram Issue #1488: Improve documentation of window and some other functions Issue #1485: Default window frame in presence of ORDER BY is RANGE .., not ROWS PR #1484: New tests, reimplemented EXCLUDE clause, and assorted changes Issue #1338: MSSQLServer compatibility enhancements PR #1480: Update Maven build instruction and fix some problems PR #1478: Upgrade maven-surefire-plugin PR #1476: Add TransactionStore to MVStore jar Issue #1475: Dropping column used by a view produces misleading error message Issue #1473: TestScript needs better detection of sorted result PR #1471: issue 1350: TestCrashAPI: PageStore.freeListPagesPerList PR #1470: Fix window functions in queries with HAVING PR #1469: Forbid incorrect nesting of aggregates and window functions Issue #1437: Generated as Identity has a different behaviour. PR #1467: Fix subtraction of timestamps PR #1464: Assorted minor changes in window processing code PR #1463: Fix some window aggregates and reduce amount of collecting implementations PR #1462: Separate aggregate and window code in some places PR #1461: Add WINDOW clause support Issue #1427: Scalability problem in MVSpatialIndex PR #1459: Improve window clause correctness checks PR #1457: Add NTILE(), LEAD() and LAG() window functions PR #1456: Add experimental implementation of remaining types of window frames PR #1454: Add FIRST_VALUE(), LAST_VALUE(), and NTH_VALUE() PR #1453, Issue #1161: Add ROW_NUMBER(), RANK(), DENSE_RANK(), PERCENT_RANK(), and CUME_DIST() window functions PR #1452: Reset aggregates before reuse PR #1451: Add experimental support for aggregates with OVER (ORDER BY *) PR #1450: Evaluate window aggregates only once for each partition PR #1449: Move more code from Aggregate and JavaAggregate to AbstractAggregate PR #1448: Add experimental implementation of grouped window queries PR #1447: Refactor OVER() processing code and fix some issues PR #1446: fix : The French messages are bad generated (not contain DB message) PR #1445: Use PostGIS-compatible format for SRID-only constraint in GEOMETRY PR #1444: Add experimental unoptimized support for OVER ([PARTITION BY ...]) in aggregates PR #1442: Bugfix - Release MVStore lock and file resources rightly even if errors when compacting database PR #1441: Add GEOMETRY type subtypes with type and SRID constraints PR #1434: Add support for ENUM in CAST and other changes PR #1431: Fix some inconsistencies in documentation and improve mvn build PR #1428: Add support for M and ZM dimensions to GEOMETRY data type Issue #1405: Introduce LocalResult factory PR #1422: Add ENVELOPE aggregate function Issue #1421: Remove old-style outer join PR #1419: Assorted minor changes PR #1414: DEFRAG and COMPACT mixup PR #1413: improvements to MVStore garbage collection PR #1412: Added org.h2.store.fs package to exported osgi bundles PR #1409: Map all remaining error codes to custom exception classes Issue #1407: Add a MODE() aggregate function PR #1402: Duplicate conditions in column check constraint PR #1399: Add more subclasses of SQLException and use it for some error codes PR #1397: Add DATEADD return type detection Issue #1393: Add INFORMATION_SCHEMA.COLUMNS.IS_VISIBLE PR #1392: Some refactoring and assorted minor optimizations PR #1388: Extract UnaryOperation from Operation and other changes PR #1386: DISK_SPACE_USED() for MVStore and other minor changes PR #1385: split up the rather large convertTo method PR #1384: Throw exception if unknown mode is specified in database URL Issue #1365, PR #1382: Parse more date-time literals for compatibility with other databases PR #1381: Minor fixes for INTERVAL data type PR #1380: Improve documentation of intervals Issue #1189: "Merge into using" parameters aren't found Issue #1377: org.h2.api.Interval and TIME leftovers PR #1376: TestMultiThreadedKernel is back PR #1373: INTERVAL data type Issue #1369: In MSSQL Server Mode generated UUID fields need NEWID() function Issue #756: FunctionsMySql is not in the main jar PR #1368: Parse BINARY VARYING, BINARY LARGE OBJECT, and CHARACTER LARGE OBJECT PR #1367: Assorted changes with SELECT output limitation clauses Issue #1363: Why H2 requires random own packages in OSGi bundle description? Issue #1192: Add an Automatic-Module-Name Issue #1361, PR #1362: Add limited support for MONEY and SMALLMONEY in compatibility modes Issue #1327: mvn build misses some resources PR #1359: Add system property to return OffsetDateTime from ResultSet.getObject() PR #1357: Simplify execution flow in some places PR #1356: Fix NPE in Query.initExpression() PR #1355: Assorted changes in MetaTable Issue #1352: TestCrashAPI: Prepared.getObjectId() was called before PR #1349: Changes is conversion and comparison methods of Value Issue #1346: Exception when using IN condition for enums PR #1345: Replace some init methods with constructors PR #1344: Streamline last chunk verification on startup PR #1341: Optimize MVSecondaryIndex.convertToKey() PR #1340: NoSuchElementException instead of returning null PR #1339: Add support of TIMESTAMP WITH TIME ZONE to addition and subtraction operators PR #1337: Streamline Value comparison PR #1336: Minor refactorings Issue #1332: Constraint name not set correctly Rename fields to reflect actual type Issue #1331: Regression in Database.updateMeta() Issue #1323: Slow update after altering table in 1.4.197 PR #1326: Add support of PERCENT in FETCH and TOP clauses PR #1325: Optimize WITH TIES in some queries and specify data types for KEY_COLUMN_USAGE PR #1321: Do not add rows before OFFSET to result if possible PR #1319: Treat NEXTVAL as an auto-generated key PR #1318: Mode append fo MVPlainTempResult PR #1314: Add ALTER VIEW RENAME command PR #1313, issue #1315: Bugfix - using default locale encoding issue in conversion between varchar and varbinary value, and checking javac output text issue in SourceCompiler PR #1312: Add Java 9+ support to NIO_CLEANER_HACK PR #1311: Fix minor issues with ResultSet.getObject(..., Class) and WITH TIES Issue #1298: TestKillRestartMulti: A map named undoLog.2 already exists Issue #1307: Invalid value "null" for parameter "calendar" [90008-193] PR #1306: Add initial implementation of WITH TIES clause PR #1304: Update changelog and fix building of documentation PR #1302: Use OpenJDK instead of OracleJDK 10 in Travis builds due to Travis problem Issue #1032: Error when executing "SELECT DISTINCT ON" Issue #1295: ConditionInSelect violates requirements of LocalResult PR #1296: Assorted minor changes PR #1293: Move HELP and SHOW tests into own files PR #1291: Fix update count for REPLACE and move some SQL tests into separate files PR #1290: Do not load the whole LOBs into memory for comparison operation Issue #408: DISTINCT does not properly work with ORDER BY on function like LOWER PR #1286: Fix MVTempResult implementations for results with invisible columns Issue #1284: Nanoseconds of timestamps from old H2 versions are not read properly PR #1283: Clean up interaction between LocalResult and ResultExternal Issue #1265: OOME is not handled properly in TraceObject.logAndConvert() Issue #1061: Regression: Braces after WITH clause not allowed anymore PR #1277: Assorted changes in Parser PR #1276: Improve support of ARRAY and SQLXML in JDBC layer PR #1275: Do not quote other lower case characters PR #1274: Use token type in Parser instead of string comparisons PR #1272: Reduce code duplication in Parser PR #1271: Minor memory leak PR #1270: drop TableView isPersistent field PR #1269: Eliminate commit of empty batch in some tests Issue #1266: Add INFORMATION_SCHEMA.COLUMNS.DATETIME_PRECISION Issue #1261: How to discover stored enum types through INFORMATION_SCHEMA Issue #1258: Failing to remove index when using schema.table PR #1256: misc tiny refactorings PR #1255: Minor changes in MERGE USING, DATE_TRUNC, and EXTRACT Issue #1214: Internal compiler believes that "3 warnings" is an error PR #1252: Assorted minor changes PR #1251: Fix SQL representation of CAST for types with fractional seconds precision PR #1250: Batch append mode for MVMap PR #1248: StringIndexOutOfBoundsException due to undoLog map PR #1246: Detect disabled tests PR #1242: Add implementation of SQLXML interface PR #1241: Various tweaks in attempting to fix TestDiskFull test PR #1240: Optimise ValueLobDB comparison methods PR #1239: Don't try to find tools.jar on Java 9+ PR #1238: remove unfinished android API PR #1237: remove JaQu PR #1236: remove STORE_LOCAL_TIME code PR #1235: Do not use deprecated Class.newInstance() PR #1234: Fix NPE in Parser.parseMergeUsing() PR #1233: Simplify old lob ValueLob class Issue 1227: lob growth in pagestore mode PR #1230: clean up some javadoc and some throws clauses PR #1229: Create UndoLog only when necessary and remove outdated code PR #1228: Remove some PageStore+MVCC leftovers PR #1226: Fix inconsistencies in checks for transaction isolation level PR #1224: Enable Java 10 testing on Travis PR #1223: Fix issues with testing on latest Java versions PR #1222: Leftovers handling Issue #1220: JDK-9 build fails due to usage of java.xml.bind in external authentication PR #1218: Test utilities only once during TestAll PR #1217: Postpone session.endStatement() until after commit PR #1213: KillRestart fix PR #1211: Assorted minor changes Issue #1204: Always use MVCC with MVStore and never use it with PageStore PR #1206: Forbid reconnects in non-regular modes in TestScript PR #1205: Misc test fixes Issue 1198: Enable MULTI_THREADED by default for MVStore mode Issue #1195: Calling setBytes to set VARCHAR field fails PR #1197: Fix or suppress errors in tests PR #1194: TestKillRestartMulti: A map named undoLog-1 already exists PR #1193: enable TestRandomSQL on non-memory databases PR #1191: External authentication with datasource issue PR #1188: Undo log split to reduce contention PR #1186: TransactionMap::sizeAsLong() optimized - temp map eliminated PR #1185: Improve naming of the object id field in Prepared Issue #1196: Feature request for MS SQL Server Compatibility Mode Issue #1177: Resource leak in Recover tool PR #1183: Improve concurrency of connection pool with wait-free implement Issue #1073: H2 v1.4.197 fails to open an existing database with the error [Unique index or primary key violation: "PRIMARY KEY ON """".PAGE_INDEX"] PR #1179: Drop TransactionMap.readLogId PR #1181: Improve CURRENT_TIMESTAMP and add LOCALTIME and LOCALTIMESTAMP PR #1176: Magic value replacement with constant PR #1171: Introduce last committed value into a VersionedValue PR #1175: tighten test conditions - do not ignore any exceptions PR #1174: Remove mapid PR #1173: protect first background exception encountered and relate it to clients PR #1172: Yet another attempt to tighten that testing loop PR #1170: Add support of CONTINUE | RESTART IDENTITY to TRUNCATE TABLE Issue #1168: ARRAY_CONTAINS() returning incorrect results when inside subquery with Long elements. PR #1167: MVStore: Undo log synchronization removal PR #1166: Add SRID support to EWKT format PR #1165: Optimize isTargetRowFound() and buildColumnListFromOnCondition() in MergeUsing PR #1164: More fixes for parsing of MERGE USING and other changes in Parser PR #1154: Support for external authentication PR #1162: Reduce allocation of temporary strings PR #1158: make fields final Issue #1129: TestCrashAPI / TestFuzzOptimizations throw OOME on Travis in PageStore mode PR #1156: Add support for SQL:2003 WITH [NO] DATA to CREATE TABLE AS PR #1149: fix deadlock between OnExitDatabaseCloser.DATABASES and Engine.DATABASES PR #1152: skip intermediate DbException object when creating SQLException PR #1144: Add missing schema name with recursive view Issue #1091: get rid of the "New" class PR #1147: Assorted minor optimizations PR #1145: Reduce code duplication PR #1142: Misc small fixes PR #1141: Assorted optimizations and fixes PR #1138, #1139: Fix a memory leak caused by DatabaseCloser objects PR #1137: Step toward making transaction commit atomic PR #1136: Assorted minor optimizations PR #1134: Detect possible overflow in integer division and optimize some code PR #1133: Implement Comparable<Value> in CompareMode and optimize ValueHashMap.keys() PR #1132: Reduce allocation of ExpressionVisitor instances PR #1130: Improve TestScript and TestCrashAPI PR #1128: Fix ON DUPLICATE KEY UPDATE with ENUM PR #1127: Update JdbcDatabaseMetaData.getSQLKeywords() and perform some minor optimizations PR #1126: Fix an issue with code coverage and building of documentation PR #1123: Fix TCP version check PR #1122: Assorted changes PR #1121: Add some protection to ValueHashMap against hashes with the same less significant bits Issue #1097: H2 10x slower than HSQLDB and 6x than Apache Derby for specific query with GROUP BY and DISTINCT subquery Issue #1093: Use temporary files for ResultSet buffer tables in MVStore PR #1117: Fix sorting with distinct in ResultTempTable Issue #1095: Add support for INSERT IGNORE INTO <table> (<columns>) SELECT in MySQL Mode PR #1114: Minor cleanup and formatting fixes PR #1112: Improve test scripts PR #1111: Use a better fix for issue with SRID Issue #1107: Restore support of DATETIME2 with specified fractional seconds precision Issue #1106: Get rid of SwitchSource PR #1105: Assorted minor changes Issue #1102: CREATE SYNONYM rejects valid definition PR #1103: Remove redundant synchronization Issue #1048: 1.4.197 regression. org.h2.jdbc.JdbcSQLException: Timeout trying to lock table "SYS" PR #1101: Move some tests in better place and add an additional test for 2PC PR #1100: Fix Insert.prepareUpdateCondition() for PageStore PR #1098: Fix some issues with NULLS FIRST / LAST Issue #1089: Parser does not quote words INTERSECTS, DUAL, TOP Issue #230: Renaming a column does not update foreign key constraint Issue #1091 Get rid if the New class PR #1087: improve performance of planning large queries PR #1085: Add tests for simple one-column index sorting PR #1084: re-enable some pagestore testing PR #1083: Assorted changes Issue #394: Recover tool places COLLATION and BINARY_COLLATION after temporary tables PR #1081: Session.getTransactionId should return a more distinguishing value Improve the script-based unit testing to check the error code of the exception thrown. Issue #1041: Support OR syntax while creating trigger Issue #1023: MVCC and existing page store file Issue #1003: Decrypting database with incorrect password renders the database corrupt Issue #873: No error when `=` in equal condition when column is not of array type Issue #1069: Failed to add DATETIME(3) column since 1.4.197 Issue #456: H2 table privileges referring to old schema after schema rename Issue #1062: Concurrent update in table "SYS" caused by Analyze.analyzeTable() Yet another fix to Page memory accounting Replace MVStore.ASSERT variable with assertions Issue #1063: Leftover comments about enhanced for loops PR #1059: Assorted minor changes PR #1058: Txcommit atomic Issue #1038: ora_hash function implementation off by one PR #1054: Introduce overflow bit in tx state Issue #1047: Support DISTINCT in custom aggregate functions PR #1051: Atomic change of transaction state PR #1046: Split off Transaction TransactionMap VersionedValue PR #1045: TransactionStore move into separate org.h2.mvstore.tx package PR #1044: Encapsulate TransactionStore.store field in preparation to a move PR #1040: generate less garbage for String substring+trim PR #1035: Minor free space accounting changes Issue #1034: MERGE USING should not require the same column count in tables PR #1033: Fix issues with BUILTIN_ALIAS_OVERRIDE=1 PR #1031: Drop schema rights together with schema PR #1029: No need to remove orphaned LOBs when the db is read-only Issue #1027: Add support for fully qualified names in MySQL compatibility mode Issue #178: INSERT ON DUPLICATE KEY UPDATE returns wrong generated key PR #1025: Remove BitField and replace its usages with BitSet Issue #1019: Console incorrectly sorts BigDecimal columns alphanumerically PR #1021: Update JdbcDatabaseMetaData to JDBC 4.1 (Java 7) Issue #992: 1.4.197 client cannot use DatabaseMetaData with 1.4.196 and older server Issue #1016: ResultSet.getObject() should return enum value, not ordinal Issue #1012: NPE when querying INFORMATION_SCHEMA.COLUMNS on a view that references an ENUM column Issue #1010: MERGE USING table not found with qualified table PR #1009: Fix ARRAY_AGG with ORDER BY and refactor aggregates Issue #1006: "Empty enums are not allowed" in 1.4.197 (mode=MYSQL) PR #1007: Copy also SRID in ValueGeometry.getGeometry() PR #1004: Preserve type names in more places especially for UUID Issue #1000: Regression in INFORMATION_SCHEMA.CONSTRAINTS.CONSTRAINT_TYPE content Issue #997: Can not delete from tables with enums Issue #994: Too much column in result set for GENERATED_KEYS on table with DEFAULT PR #993: Fix some compiler warnings and improve assert*() methods PR #991: Generate shorter queries in JdbcDatabaseMetaData.getTables() and remove some dead code PR #989: Fix more issues with range table and improve its documentation ## Version 1.4.197 (2018-03-18) PR #988: Fix RangeTable.getRowCount() for non-default step PR #987: ValueBoolean constants are not cleared and may be used directly PR #986: Check parameters in JdbcPreparedStatement.addBatch() PR #984: Minor refactorings in Parser PR #983: Code cleanups via IntelliJ IDEA inspections Issue #960: Implement remaining time unit in "date_trunc" function Issue #933: MVStore background writer endless loop PR #981: Reorganize date-time functions PR #980: Add Parser.toString() method for improved debugging experience PR #979: Remove support of TCP protocol versions 6 and 7 PR #977: Add database versions to javadoc of TCP protocol versions and update dictionary.txt PR #976: Add and use incrementDateValue() and decrementDateValue() Issue #974: Inline PRIMARY KEY definition loses its name PR #972: Add META-INF/versions to all non-Android jars that use Bits PR #971: Update ASM from 6.1-beta to 6.1 PR #970: Added support for ENUM in prepared statement where clause PR #968: Assorted changes PR #967: Adds ARRAY_AGG function PR #966: Do not include help and images in client jar PR #965: Do not include mvstore.DataUtils in client jar and other changes PR #964: Fix TestFunctions.testToCharFromDateTime() PR #963 / Issue #962: Improve documentation of compatibility modes and fix ssl URL description Issue #219: H2 mode MySQL- ON UPDATE CURRENT_TIMESTAMP not supported PR #958: More fixes for PgServer PR #957: Update database size information and links in README.md PR #956: Move tests added in 821117f1db120a265647a063dca13ab5bee98efc to a proper place PR #955: Support getObject(?, Class) in generated keys PR #954: Avoid incorrect reads in iterators of TransactionMap PR #952: Optimize arguments for MVMap.init() PR #949: Fix table borders in PDF and other changes PR #948: Fix some grammar descriptions and ALTER TABLE DROP COLUMN parsing PR #947: Fix building of documentation and use modern names of Java versions PR #943: Assorted changes in documentation and a fix for current-time.sql PR #942: Fix page numbers in TOC in PDF and move System Tables into own HTML / section in PDF PR #941: Use >> syntax in median.sql and move out more tests from testScript.sql PR #940: add Support for MySQL: DROP INDEX index_name ON tbl_name PR #939: Short syntax for SQL tests Issue #935: The "date_trunc" function is not recognized for 'day' PR #936: Fix font size, line length, TOC, and many broken links in PDF PR #931: Assorted changes in documentation PR #930: Use Math.log10() and remove Mode.getOracle() PR #929: Remove Mode.supportOffsetFetch PR #928: Show information about office configuration instead of fallback PDF generation mode PR #926: Describe datetime fields in documentation PR #925: Fix time overflow in DATEADD Issue #416: Add support for DROP SCHEMA x { RESTRICT | CASCADE } PR #922: Parse and treat fractional seconds precision as described in SQL standard Issue #919: Add support for mixing adding constraints and columns in multi-add ALTER TABLE statement PR #916: Implement TABLE_CONSTRAINTS and REFERENTIAL_CONSTRAINTS from the SQL standard PR #915: Implement INFORMATION_SCHEMA.KEY_COLUMN_USAGE from SQL standard PR #914: don't allow null values in ConcurrentArrayList PR #913: Assorted changes in tests and documentation Issue #755: Missing FLOAT(precision)? PR #911: Add support for MySQL-style ALTER TABLE ADD ... FIRST Issue #409: Support derived column list syntax on table alias PR #908: remove dead code PR #907: Nest joins only if required and fix some issues with complex joins PR #906: Fix obscure error on non-standard SELECT * FROM A LEFT JOIN B NATURAL JOIN C PR #805: Move some JOIN tests from testScript.sql to own file PR #804: Remove unused parameters from readJoin() and readTableFilter() Issue #322: CSVREAD WHERE clause containing ORs duplicates number of rows PR #902: Remove DbSettings.nestedJoins PR #900: Convert duplicate anonymous classes in TableFilter to nested for reuse PR #899: Fix ON DUPLICATE KEY UPDATE for inserts with multiple rows PR #898: Parse TIME WITHOUT TIME ZONE and fix TIMESTAMP as column name PR #897: Update JTS to version 1.15.0 from LocationTech PR #896: Assorted changes in help.csv PR #895: Parse more variants of timestamps with time zones PR #893: TIMESTAMP WITHOUT TIME ZONE, TIMEZONE_HOUR, and TIMEZONE_MINUTE PR #892: Assorted minor changes in Parser PR #891: Update documentation of date-time types and clean up related code a bit PR #890: Implement conversions for TIMESTAMP WITH TIME ZONE PR #888: Fix two-phase commit in MVStore Issue #884: Wrong test Resources path in pom.xml PR #886: Fix building of documentation PR #883: Add support for TIMESTAMP WITH TIME ZONE to FORMATDATETIME PR #881: Reimplement dateValueFromDate() and nanosFromDate() without a Calendar PR #880: Assorted date-time related changes PR #879: Reimplement TO_DATE without a Calendar and fix a lot of bugs an incompatibilities PR #878: Fix IYYY in TO_CHAR and reimplement TRUNCATE without a Calendar PR #877: Reimplement TO_CHAR without a Calendar and fix 12 AM / 12 PM in it PR #876: Test out of memory PR #875: Improve date-time related parts of documentation PR #872: Assorted date-time related changes PR #871: Fix OOME in Transfer.readValue() with large CLOB V2 PR #867: TestOutOfMemory stability Issue #834: Add support for the SQL standard FILTER clause on aggregate functions PR #864: Minor changes in DateUtils and Function PR #863: Polish: use isEmpty() to check whether the collection is empty or not. PR #862: Convert constraint type into enum PR #861: Avoid resource leak PR #860: IndexCursor inList PR #858 / Issue #690 and others: Return all generated rows and columns from getGeneratedKeys() Make the JDBC client independent of the database engine PR #857: Do not write each SQL error multiple times in TestScript PR #856: Fix TestDateTimeUtils.testDayOfWeek() and example with ANY(? PR #855: Reimplement DATEADD without a Calendar and fix some incompatibilities PR #854: Improve test stability PR #851: Reimplement DATEDIFF without a Calendar Issue #502: SQL "= ANY (?)" supported? PR #849: Encode date and time in fast and proper way in PgServerThread PR #847: Reimplement remaining parts of EXTRACT, ISO_YEAR, etc without a Calendar PR #846: Read known fields directly in DateTimeUtils.getDatePart() Issue #832: Extract EPOCH from a timestamp PR #844: Add simple implementations of isWrapperFor() and unwrap() to JdbcDataSource PR #843: Add MEDIAN to help.csv and fix building of documentation PR #841: Support indexes with nulls last for MEDIAN aggregate PR #840: Add MEDIAN aggregate PR #839: TestTools should not leave testing thread in interrupted state PR #838: (tests) Excessive calls to Runtime.getRuntime().gc() cause OOM for no reason Don't use substring when doing StringBuffer#append PR #837: Use StringUtils.replaceAll() in Function.replace() PR #836: Allow to read invalid February 29 dates with LocalDate as March 1 PR #835: Inline getTimeTry() into DateTimeUtils.getMillis() PR #827: Use dateValueFromDate() and nanosFromDate() in parseTimestamp() Issue #115: to_char fails with pattern FM0D099 PR #825: Merge code for parsing and formatting timestamp values Enums for ConstraintActionType, UnionType, and OpType PR 824: Add partial support for INSERT IGNORE in MySQL mode PR #823: Use ValueByte.getInt() and ValueShort.getInt() in convertTo() PR #820: Fix some compiler warnings PR #818: Fixes for remaining issues with boolean parameters Use enum for file lock method PR #817: Parse also 1 as true and 0 as false in Utils.parseBoolean() PR #815: Fix count of completed statements PR #814: Method.isVarArgs() is available on all supported platforms Issue #812: TIME values should be in range 0:00:00.000000000 23:59:59.999999999? PR #811: Issues with Boolean.parseBoolean() PR #809: Use type constants from LocalDateTimeUtils directly PR #808: Use HmacSHA256 provided by JRE PR #807: Use SHA-256 provided by JRE / Android and use rotateLeft / Right in Fog 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.