changelist_2_0

8/13/2019 changelist_2_0

1/7

08 October 2013 - version 2.3.1-- fixed several minor issues-- fixed bug with some queries using ORDER BY DESC on indexed columns used in conditions-- improved JDBCPool to be created with DataSourceFactory-- added support for LIKE with parametric escape character-- added support for routine SIGNAL messages using variables-- fixed issue with NPE is some complex subqueries08 July 2013 - version 2.3.0-- improved data exception error messages05 July svn 5259 snapshot 52-- added connection property, close_result30 June - svn 5256 snapshot 51-- added INSTR function15 May - svn 5241 snapshot-- added support for backup of database as set of files BACKUP DATABASE TO AS FILES12 April - svn 5228 snapshot-- added TIMESTAMP_WITH_ZONE function-- fixed issue with AT use with TIMESTAMP WITHOUT TIME ZONE-- fixed issue with TRIGGER with non-zero QUEUE setting4 April - svn 5222-- improved data space reuse-- improved optimisation of SELECT DISTINCT and GROUP BY

-- improved MYS syntax compatibility mode to support backtick quoted identifiers25 March 2013 - svn 5214-- added support for statement timeout via java.sql.Statement and PreparedStatement18 March 2013 - svn 5208-- improved support for setting collation strength and case-sensitivity-- VARCHAR_IGNORECASE is no longer a type and is translated into the collation name10 March 2013 - svn 5203-- increased default max size of BLOB and CLOB to BLOB(1G) and CLOB(1G)-- added support for compressed and encrypted lobs-- improved DatabaseMetaData reporting of actual settings for null ordering-- improved DB2 and ORA syntax compatibility modes

06 February 2013 - svn 5168 snapshot-- improved backward compatibility for use with embedded OpenOffice / LibreOffice databases-- fixed regression with some subquery tables used in OUTER joins-- fixed regression with some in MERGE statements04 January 2013 - svn 5139 - snapshot-- improved reuse of empty lob spaces-- fixed various minor issues09 December 2012 - svn 5127-- added support for CONCAT_WS and UNIX_MILLIS functions-- added support for table spaces-- added INFORMATION_SCHEMA.SYSTEM_TABLESTATS-- added SET DATABASE SQL NULLS ORDER and the property sql.nulls_order for the d

efault sort order of nulls-- improved name resolution in queries within SQL routines-- fixed various minor issues01 November 2012 - svn 5103-- fixed issue with some correlated subqueries in where clause-- fixed issue with ROWNUM in inner selects-- fixed various minor issues-- improved support for DATE and TIMESTAMP subtraction without explicit INTERVALtype-- added support for ADD_MONTHS, LAST_DAY, MONTHS_BETWEEN and other Oracle style


2/7

functions24 October 2012 - svn 5096 snapshot-- fixed various minor issues-- fixed issues with some disk-based TEMP tables used in multiversion transaction modes12 October 2012 - svn 5089 snapshot-- fixed issue with access to LOBs in res: databases-- fixed regression with some nested views-- added global IGNORECASE property10 September 2012 - svn 5071 snapshot-- fixed regession with the result returned after a SHUTDOWN-- fixed regression with non-correlated scalar subqueries causing NPE-- fixed regression with FUNCTION and PROCEDURE local tables data change logging-- fixed regression with script file with CREATE TYPE with character types-- fixed issue with DECLARE CURSOR in routines using write locks and requiring MODIFIES SQL DATA-- fixed issue with TRUNCATE function causing NPE when used in column GENERATEDALWAYS expression-- fixed issue with escape in Unicode string which caused only the part before the escape to return from Scanner-- fixed issue with upgraded version 1.8.0 databases which did not have lob space-- fixed issue with logging changed password after ALTER USER ... SET PASSWORD ...

-- improved text table source textdb.allow_full_path=true to allow absolute fullpaths-- improved sql.enforce_references=true to catch ambiguous references in ORDER BY columns-- improved ORA syntax compatibility mode-- added support for terminal DROP TABLE ... IF EXISTS for local temporary tables

05 August 2012 - version 2.2.9-- code review and minor fixes-- improved support for use in OO and LO version 3.2 and later-- new simple connection pool class org.hsqldb.jdbc.JDBCPool2 July 2012 SVN 5017 snapshot

-- added integrated support for large data-- enhanecments to Servlet and WebServer28 June 2012 SVN 5009 snapshot-- improved optimisation of queries with views and subqueries-- improved support for complex, nested queries-- improved name resolution in SQL statements in functions and triggers4 June 2012 SVN 4997-- fixed issue with server sometimes not exiting at shutdown-- fixed regression with recursive queries-- END is no longer a reserved keywords-- property for SQL logging is now persisted14 May 2012 SVN 4991-- fixed issues with hot backup

-- improved name resolution with nested subqueries-- improved support for collations with NO PAD-- added support for MySQL style DATE_ADD, DATE_SUB and interval expressions22 April 2012 - SVN 4977-- fixed issue with datetime TRUNC and ROUND functions-- fixed issues with a number of functions-- fixed issue causing reduced speed and memory leak with disk based result sets-- fixed issues with comparison of lobs and lobs file exceeding 2GB-- extended batch execution to procedure calls26 February 2012 - SVN 4944


3/7

-- fixed regression in DECODE function-- fixed issue with ROWNUM when correlated supqueries were used-- added support for COUNT(DISTINCT ...) with multiple arguments-- added support for SQL log level 1-3-- extended ORA syntax compatibility mode-- improved garbage collection of dropped MEMORY and TEXT tables-- improved name resolution with joined tables28 January 2012 - SVN 4925-- fixed issue with min(), max() optimisation for indexed columns-- fixed issue with some usages of UNNEST-- fixed issue with some NOT IN usage with NULL in list

22 January 2012 - version 2.2.8-- fixed regression since 2.2.6 that affected database crash recovery-- added support for hot backup

14 January 2012 - version 2.2.7-- fixed issue with NPE thrown with nio data files-- added SET DATABASE SQL NULLS FIRST and the property sql.nulls_first for the default sort order of nulls-- added SET DATABASE SQL SYNTAX DB2 and the property sql.syntax for DB2 syntaxcompatibility-- extended SET DATABASE SQL AVG SCALE and the property sql.avg_scale to the results of division

-- changed the JDBC object returned for INTERVAL values to String for the default jdbc.translate_tti_types=true setting-- improved syntax compatibility modes-- several minor improvements and bug fixes

19 November 2011 - version 2.2.6-- fixed issue with memory use of large strings in cache-- fixed issue with FOR loops with ORDER BY in routines-- fixed issue with TIME ZONE types JDBC type reporting in server-- fixed issue with type resolution of arrays-- fixed issue with identical prepared statements in session-- fixed issue with cached tables in jar databases-- fixed issue with certain server properties

-- fixed issues with MVCC transactions-- fixed issue with some row comparison predicates-- added code branch supporting huge multi terabyte databases with tens of billions of rows-- added property sql.avg_scale for decimal results from AVG and MEDIAN aggregates-- added support for AVG with datetime types-- added two-arg REPLACE function-- added new datetime and bit functions-- added support for ROWNUM() in UPDATE and DELETE statements-- added backward compatibility for IDENTITY options with commas-- added support for new SQL properties-- added Gradle build

-- improved SYSDATE, NOW and similar functions to accept optional empty arg list-- improved JDBC support for LOBs-- improved concurrency of CREATE and DROP DDL operations-- improved data type determination for dynamic variables-- improved routine variable scope in MERGE statements-- improved compatibility modes-- improved persistence reliability-- many minor improvements and bug fixes-- major improvements to SqlTool


4/7

5 July 2011 - version 2.2.5-- fixed UNNEST in subquery-- fixed issue with INFORMATION_SCHEMA.ELEMENT_TYPES view-- fixed missing exception when table functions were used as SELECT items-- fixed regression with server ACL file load-- fixed issue with query not compiling with certain types of IN predicate-- added support for UNNEST with multiple ARRAY args-- added SYSTIMESTAMP function-- dba privilege required for LOAD_FILE function-- improved handling of misconfigured external logging platforms-- improved query speed for some joins-- improved parameter type allocation for IN lists-- minor improvements

12 Jun 2011 - version 2.2.4-- fixed reported issue-- improved INFORMATION_SCHEMA concurrency6 Jun 2011 - version 2.2.3-- fixed issue with limit offset with indexed IN predicate-- added INFORMATION_SCHEMA.ELEMENT_TYPES view and related enhancements-- added hsqldb.full_log_replay property-- added REGEXPR_SUBSTRING and REGEXPR_SUBSTRING_ARRAY functions-- added support for multiple unnamed savepoints-- improved IFNULL etc. functions that are based on CASE WHEN expressions

-- improved Transfer Tool in HSQLDB transfers-- minor improvements

22 May 2011 - version 2.2.2-- increased .data file limit to 2TB-- improved EXPLAIN PLAN-- improved query speed for some joins-- improved TRUNCATE statement-- added support for text tables in mem: databases-- minor improvements

16 May 2011 - version 2.2.1-- fixed regression in 2.2.0 with server TLS

-- fixed regression in 2.2.0 with ResultSetMetaData schema names-- fixed type limitations of Connection#createArrayOf-- fixed DatabaseManager running as Applet-- added contents to INFORMATION_SCHEMA.SQL_IMPLEMENTATION_INFO-- added auto checkpoints execution in separate session-- improved query speed for some LEFT OUTER joins-- added deletion of the temp directory at shutdown

10 May 2011 - version 2.2.0-- fixed regression in 2.1.0 with database log created after a backup is completed not used for recovery-- fixed regression in 2.1.0 with alter table operation failures causing loss oftable data

-- fixed issues with disk based result sets-- fixed issue with multiple ALTER TABLE statements used as a single statement-- reserved keywords now include DEFAULT and exclude ADMIN-- added support for ROWNUM() function-- added support for GET DIAGNOSTICS statement and DIAGNOSTICS function-- added support for POSITION_ARRAY and enhancements to SORT_ARRAY (also ARRAY_SORT)-- added support for WIDTH_BUCKET function-- added support for SQL execution logging SET DATABASE EVENT LOG SQL LEVEL 3-- improved column nullability reporting in ResultSetMetaData


5/7

-- improved BOOLEAN type support in compatibility modes-- improvements to Server, including new shutdown methods and properties file name argument-- improvements to MVCC transaction management-- improvements to text table properties support-- improved table and database locking for DDL statements-- minor improvements and bug fixes

14 Mar 2011 - Version 2.1.0-- added support for WITH RECURSIVE-- added support for ALTER INDEX AS () to change the indexed column list of an index-- extension of MySQL and PostgreSQL compatibility modes. Includes type conversion and sequence functions-- extension to IDENTITY column support allows the use of a named SEQUENCE22 Feb 2011 - SVN 4096 - 2.1.0 rc4-- improvements to avoid creation of new .data files at checkpoint and allow incremental enlargement of this file-- additions and improvements to INFORMATION_SCHEMA-- added MS SqlServer function compatibility-- added more extensive support for ALTER SPECIFIC ROUTINE-- added initial support for JDBC 4.1 - Java 1.7-- added support for opening most 1.8.x databases that are not explicitly SHUTDOWN

-- event logging format has changed slightly, and new level 3 allows more detailin the log-- added MEDIAN aggregate function-- added ARRAY_SORT function-- routine variables and parameters can be used in LIMIT / FETCH / OFFSET clauses-- improvements to lob use with PreparedStatement-- improvements to calling procedures with JDBC10 Dec 2010 - SVN 3940 - 2.0.1 RC3-- added support for cached tables for lob catalog-- added support for CURRENT VALUE FOR , same as CURRVAL-- added TO_TIMESTAMP, LPAD, RPAD functions31 Oct 2010 - SVN 3836 - 2.0.1 RC2

-- added support for CREATE TABLE ... IF NOT EXISTS ...-- added support for ?user=xxxx&password=yyyy connection in URL string-- improved query optimisation for LIKE-- added support for password complexity check functions-- added support for external user authentication-- added UUID functions19 Oct 2010 - SVN 3824 - 2.0.1 RC1-- added support for compressed scripts14 Oct 2010 - SVN 3814-- added support for recursive SQL functions and local table variables04 Oct 2010 - SVN 3808-- added support for translation of Oracle types VARCHAR2, NUMBER, RAW, etc. with SET DATABASE SQL SYNTAX ORA TRUE

-- added support for more procedural statements in SQL triggers-- added support for variables in database URL's24 Sept 2010 - SVN 3794-- fixed issue with new sql compatibility properties applied to older databases-- fixed bug with IN predicates in arguments of aggregate functions-- fixed bug with table functions used in subqueries-- added support for Oracle syntax elements including DUAL, ROWNUM, NEXTVAL, CURRVAL with sql.syntax_ora=true property-- added support for clustered indexes-- added enhancement for column visibility in nested joins


6/7

-- added support for datetime ROUND and TRUNC functions-- added new connection properties-- added support for FOR loops in routines11 Aug 2010 - SVN 3750-- extended getGeneratedKeys to UPDATE and MERGE operations-- extended ALTER SESSION statement-- added SEQUENCE_ARRAY and SESSION_ID function28 July 2010 - SVN 3725-- improved changing type of columns-- added support for adding GENERATED ... AS IDENTITY to an existing column23 July 2010 - SVN 3721-- added FILTER clause support to aggregate functions-- added functions ACTION_ID, TRANSACTION_ID, TRANSACTION_SIZE, UNIX_TIMESTAMP22 July 2010 - SVN 3716-- improved default reporting of WITH TIME ZONE and INTERVAL types in metadata and system tables-- improved getGeneratedKeys with user defined column sets-- fixed bug #3032488 - multi-column IN condition without a full index on columns did not work19 July 2010 - SVN 3709-- added support for procedures returning result sets-- additional relaxation of BIT used as BOOLEAN13 July 2010 - SVN 3693-- added aggregate functions ARRAY_AGG and GROUP_CONCAT

-- added TO_DATE function09 July 2010 - SVN 3688-- added function LOB_ID-- added BLOB, CLOB, VARBINARY support to Java functions and procedures-- fixed bug with OCTET_LENGTH function07 July 2010 - SVN 3686-- added property sql.longvar_is_lob-- added missing CONCAT function-- added ARRAY support to Java functions and procedures-- added query optimisation for DISTINCT and GROUP BY on indexed columns-- speed improvement for some large results-- fixed bug related to persistence of lobs after row updates that change the lob

-- fixed bug #3023253 - multiple count(*) with duplicate tables in outer join-- fixed bug #3022106 - mix of IS NULL and other conditions in outer join26 June 2010 - SVN 3674-- added property sql.enforce_types and related SQL statement-- added ALTER SESSION statement-- fixed bug #3021175 with setFetchSize()-- relaxation of type comparison and null types - controlled by sql.enforce_type22 June 2010 - SVN 3667-- changed names of three system functions ISDATABASEREADONLY() to IS_DATABASE_READONLY(), etc.-- fixed bug with Clob.getInputStream()-- improvement to TO_CHAR function-- some relaxation of DECIMAL dynamic params

16 June 2010 - SVN 3658-- fixed bug #3016375 Server remote open with no initial database-- fixed bugs #3016397 - multiple UNION CORRESPONDING did not work-- fixed bugs #3016481 - TABLE T did not work with views-- minor improvement to MVCC transactions13 June 2010 - SVN 3654-- fixed issue with third parameter of LOCATE function-- added TRUNC and changed return type of TRUNCATE function to reduce decimal scale-- added synchronized blocks to allow mass creation of mem: databases


7/7

-- added support for jdbc:default:connection for Java functions07 June 2010 - SVN 3646-- fixed bug - SET FILES LOB SCALE did not change the store without a shutdown-- fixed bug #3012585 - multi-column FOREIGN KEY with mismatched order of PK columns did not work correctly

06 June 2010 - version 2.0.0

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