Incompatible change: This release introduced the TRIGGER privilege. Previously, the SUPER privilege was needed to create or drop triggers. Now those operations require the TRIGGER privilege. This is a security improvement because you no longer need to grant users the SUPER privilege to enable them to create triggers. However, the requirement that the account named in a trigger's DEFINER clause must have the SUPER privilege has changed to a requirement for the TRIGGER privilege. You should check which accounts are named in the DEFINER clause of existing triggers and make sure that those accounts have the TRIGGER privilege. Otherwise, they will fail when activated. (Bug#9142)

Incompatible change: Due to a change in the naming scheme for partitioning and subpartitioning files, it is not possible for the server to read partitioned tables created in previous MySQL versions. A suggested workaround is (1) to create a non-partitioned table with the same table schema using a standard CREATE TABLE statement (that is, with no partitioning clauses) and then (2) to issue aSELECT INTO to copy the data into the non-partitioned table before the upgrade; following the upgrade, you can partition the new table using ALTER TABLE ... PARTITION BY .... Alternatively, you can dump the table using mysqldump prior to upgrading and reload it afterwards with LOAD DATA. In either case, you should drop the pre-5.1.6 partitioned tables before upgrading to 5.1.6 or later. (Bug#13437)

Important: If any partitioned tables that were created prior to MySQL 5.1.6 are present following an upgrade to MySQL 5.1.6 or later, it is also not possible to read from the INFORMATION_SCHEMA.PARTITIONS table, nor will you be able to drop those tables or the database or databases in which they are located. In this event, you must: (1) shut down mysqld; (2) manually delete the table, partition, and (if any) subpartition files; and then (3) restart the MySQL Server. (Bug#16695)

Incompatible change: Words with apostrophes are now matched in a FULLTEXT search against non-apostrophe words (for example, a search for Jerry will match against the term Jerry's). Users upgrading to this version must issue REPAIR TABLE statements for tables containing FULLTEXT indexes. (Bug#14194)

The mysqldump utility now supports an option for dumping tablespaces. Use -Y or --all-tablespaces to enable this functionality. (Bug#16753)

Partition support is not an „engine“, but it was included in the output of SHOW ENGINES. Now it is not. (Bug#14355) The have_partition_engine was renamed to have_partitioning. (Bug#16718)

ANALYZE TABLE is now supported for partitioned tables. (Bug#13441)

Added the --both-log-formats and --old-log-format options for controlling whether log files or log tables are used. variable.

Added the character_set_filesystem system variable.

Added the event_scheduler system variable.

Added the ndb_extra_logging system variable.

Added the EVENTS table to INFORMATION_SCHEMA.

Added the PARTITIONS table to INFORMATION_SCHEMA.

The ARCHIVE storage engine supports the AUTO_INCREMENT column attribute and the AUTO_INCREMENT table option. Abschnitt 14.8, „Die ARCHIVE-Speicher-Engine“.

Fixed a crash when fulltext search parser plugin returned more words than half of the length (in bytes) of the query string. (Bug#16722)

MYSQL_OPT_RECONNECT option was modified by calls to the mysql_real_connect() function. (Bug#15719)

Specifying a value for --tmptable without a trailing slash had unpredictable results. (Bug#15904)

Attempting to insert data into a partitioned table that used the BLACKHOLE storage engine caused mysqld to crash. (Bug#14524)

Using RANGE partitioning with a CASE statement as the partitioning function would cause records to be placed in the wrong partition. (Bug#15393)

ALTER TABLE ... ADD PARTITIONS on a table with one partition crashed the server. (Bug#15820)

NDB Cluster returned incorrect Can't find file error for OS error 24, changed to Too many open files. (Bug#15020)

Multi-byte path names for LOAD DATA and SELECT ... INTO OUTFILE caused errors. (Bug#12448)

Certain subqueries where the inner query is the result of a aggregate function would return different results on MySQL 5.0 than on MySQL 4.1. (Bug#15347)

Error message for specifying value for which no partition exists returned wrong values on certain platforms. (Bug#15910)

Certain Japanese table names were not properly saved during a CREATE TABLE statement. (Bug#3906)

NDB Cluster leaked disk space when performing INSERTS/DELETES in a loop. (Bug#16771)

NDB Cluster returned wrong error when tablespace on disk was full. (Bug#16738)

The DATA DIRECTORY and INDEX DIRECTORY clauses of a CREATE TABLE statement involving partitions did not work. (Bug#14354)

Subselect could return wrong results when records cache and grouping was involved. (Bug#15347)

In some cases the query optimizer did not properly perform multiple joins where inner joins followed left joins, resulting in corrupted result sets. (Bug#15633)

The absence of a table in the left part of a left or right join was not checked prior to name resolution, which resulted in a server crash. (Bug#15538)

NDB Cluster: Trying to import too many dumped tables requiring resources beyond those allocated in the cluster configuration would cause the server to crash instead of reporting an insufficient resources error. (Bug#16455)

NDB Cluster (Disk Data): Tablespaces created using parameters with relatively low values (< 10 MB) produced filesizes much smaller than expected. (Bug#16742)

NDB Cluster: CREATE TABLESPACE statements were incorrectly parsed on 64-bit platforms. (INITIAL SIZE size worked, but INITIAL SIZE = size failed.) (Bug#13556)

Trying to add more than one partition in a single ALTER TABLE ... ADD PARTITION statement caused the server to crash. (Bug#16534)

Creating a partitioned table using a storage engine other than the session default storage engine caused the server to crash. (Bug#15966)

An ALTER TABLE ... PARTITION BY ... statement did not have any effect. (Bug#15523)

NDBCluster (Disk Data): The error message generated by a failed ADD UNDOFILE did not provide any reasons for the failure. (Bug#16267)

NDBCluster (Disk Data): DROP LOGFILE GROUP corrupted the cluster file system and caused ndbd to fail when running more than one node on the same system. (Bug#16193)

NDBCluster: A bitfield whose offset and length totaled 32 would crash the cluster. (Bug#16125)

NDBCluster: Upon the completion of a scan where a key request remained outstanding on the primary replica and a starting node died, the scan did not terminate. This caused incompleted error handling of the failed node. (Bug#15908)

NDBCluster: The ndb_autodiscover test failed sporadically due to a node not being permitted to connect to the cluster. (Bug#15619)

Using mysqldump to obtain a dump of a partitioned table employing the NDB storage engine produced a non-functional table creation statement. (Bug#13155)

SHOW CREATE TABLE did not display the PARTITIONS clause for tables partitioned by HASH or KEY. (Bug#14327)

Inserting a negative value into an integer column used as the partitioning key for a table partitioned by HASH could cause the server to crash. (Bug#15968)

With a table partitioned by LIST, inserting a value which was smaller than any value shown in the partitioning value-lists could cause the server to crash. (Bug#14365)

ALTER TABLE ... DROP PARTITION would truncate all DATE column values in the table's remaining partitions to NULL. (Bug#13644)

ALTER TABLE ... ADD PARTITION could crash the server or cause an Out of memory error in some circumstances. (Bug#13447)

The server would allow foreign keys to be declared in the definition of a partitioned table despite the fact that partitioned tables do not support foreign keys (see Abschnitt 17.4, „Beschränkungen und Grenzen der Partitionierung“). (Bug#13446)

A SELECT from a key-partitioned table with a multi-column key could cause the server to crash. (Bug#13445)

Issuing a TRUNCATE statement twice in succession on the same partitioned table would cause the server to crash. (Bug#13442)

Using a REPLACE statement on a partitioned table caused the server to crash. (Bug#13440)

Using an identifier rather than a literal integer value in the LESS THAN clause of a range-partitioned table could cause the server to crash and corruption of tables. (Bug#13439)

Using ENGINE=... within a PARTITION clause could cause the server to crash. (Bug#13438)

CREATE TABLE ... LIKE did not work if the table whose schema was to be copied was a partitoned table. (Bug#13435)

SHOW CREATE TABLE did not display the PARTITIONS clause for tables partitioned by HASH or KEY. (Bug#14327)

Certain permission management statements could create a NULL hostname for a user, resulting in a server crash. (Bug#15598)

Temporary table aliasing did not work inside stored functions. (Bug#12198)

Parallel builds occasionally failed on Solaris. (Bug#16282)

Added the INFORMATION_SCHEMA ENGINES table.

Added the INFORMATION_SCHEMA PLUGINS table and the SHOW PLUGIN statement.

Added the binlog_format system variable that controls whether to use row-based or statement-based binary logging. Added the --binlog-format and --binlog-row-event-max-size server options for binary logging control. See Abschnitt 6.3, „Zeilenbasierte Replikation“.

Plugins now can have status variables that are displayed in the output from SHOW STATUS.

Added the XML functions ExtractValue() and UpdateXML(). ExtractValue() returns the content of a fragment of XML matching a given XPath expression. UpdateXML() replaces the element selected from a fragment of XML by an XPath expression supplied by the user with a second XML fragment (also user-supplied), and returns the modified XML. See Abschnitt 12.9, „XML-Funktionen“.

Added the --base64-output option to mysqlbinlog to print all binary log entries using base64 encoding. This is for debugging only. Logs produced using this option should not be applied on production systems.

Added the --port-open-timeout option to mysqld to control how many seconds the server should wait for the TCP/IP port to become free if it cannot be opened. (Bug#15591)

Two new Hungarian collations are included: utf8_hungarian_ci and ucs2_hungarian_ci. These support the correct sort order for Hungarian vowels. However, they do not support the correct order for sorting Hungarian consonant contractions; this issue will be fixed in a future release.

InnoDB: An UPDATE statement with no index column in the WHERE condition locked all the rows in the table. (Bug#3300)

INSERT DELAYED caused mysqld to crash. (Bug#16095)

The output of mysqldump --triggers did not contain the DEFINER clause in dumped trigger definitions. (Bug#15110)

The output of SHOW TRIGGERS contained extraneous whitespace. (Bug#15103)

An INSERT ... SELECT statement between tables in a MERGE set can return errors when statement involves insert into child table from merge table or vice-versa. (Bug#5390)

A COMMIT statement followed by a ALTER TABLE statement on a BDB table caused server crash. (Bug#14212)

InnoDB: Comparison of indexed VARCHAR CHARACTER SET ucs2 COLLATE ucs2_bin columns using LIKE could fail. (Bug#14583)

Creating a trigger caused a server crash if the table or trigger database was not known because no default database had been selected. (Bug#14863)

Issuing a DROP USER command could cause some users to encounter a hostname is not allowed to connect to this MySQL server error. (Bug#15775)

The --plugin_dir option was not working. Also fix error with specifying parser name for fulltext. (Bug#16068)

Attempting to insert into a table partitioned by LIST a value less than any specified in one of the table's partition definitions resulted in a server crash. In such cases, mysqld now returns ERROR 1500 (HY000): Table has no partition for value v , where v is the out-of-range value. (Bug#15819)

Added the mysqlslap program, which is designed to emulate client load for a MySQL server and report the timing of each stage. It works as if multiple clients are accessing the server.

Added the --server-id option to mysqlbinlog to enable only those events created by the server having the given server ID to be extracted. (Bug#15485)

It is now possible to build the server such that MyISAM tables can support up to 128 keys rather than the standard 64. This can be done by configuring the build using the option --with-max-indexes=N, where N≤128 is the maximum number of indexes to permit per table. (Bug#10932)

The bundled BDB library was upgraded to version 4.4.16.

Added the cp1250_polish_ci collation for the cp1250 character set.

Added the myisam_use_mmap system variable.

Added the --bdb-data-direct and --bdb-log-direct server options.

Server could not be built on default Debian systems with BDB enabled. (Bug#15734)

BDB: A DELETE, INSERT, or UPDATE of a BDB table could cause the server to crash where the query contained a subquery using an index read. (Bug#15536)

A left join on a column that having a NULL value could cause the server to crash. (Bug#15268)

It was not possible to reorganize a partition reusing a discarded partition name.

Now, for example, you can create a table such as this one:

CREATE TABLE t1 (a INT) 
    PARTITION BY RANGE (a) (
      PARTITION p0 VALUES LESS THAN (10),
      PARTITION p1 VALUES LESS THAN (20),
      PARTITION p2 VALUES LESS THAN MAXVALUE
    );

and then repartition it as shown here:

ALTER TABLE t1 REORGANIZE PARTITION p2 INTO (
    PARTITION p2 VALUES LESS THAN (30)
);

Previously, attempting to do so would produce the error All partitions must have unique names in the table . (Bug#15521)

NDB Cluster: The --ndb option for perror did not function. (Bug#15486)

The BLACKHOLE storage engine did not handle transactions properly: Rolled-back transactions were written to the binary log. Now they ae not. (Bug#15406)

NDB Cluster: Using ORDER BY primary_key_column when selecting from a table having the primary key on a VARCHAR column caused a forced shutdown of the cluster. (Bug#14828, Bug#15240, Bug#15682, Bug#15517)

ANALYZE TABLE did not properly update table statistics for a MyISAM table with a FULLTEXT index containing stopwords, so a subsequent ANALYZE TABLE would not recognize the table as having already been analyzed. (Bug#14902)

The maximum value of MAX_ROWS was handled incorrectly on 64-bit systems. (Bug#14155)

Multiple-table update operations were counting updates and not updated rows. As a result, if a row had several updates it was counted several times for the „rows matched“ value but updated only once. (Bug#15028)

SELECT queries that began with an opening parenthesis were not being placed in the query cache. (Bug#14652)

Space truncation was being ignored when inserting into BINARY or VARBINARY columns. Now space truncation results in a warning, or an error in strict mode. (Bug#14299)

Selecting from a view processed with the temptable algorithm caused a server crash if the query cache was enabled. (Bug#15119)

Creating a view that referenced a stored function that selected from a view caused a crash upon selection from the view. (Bug#15096)

Creating a view within a stored procedure could result in an out of memory error or a server crash. (Bug#14885)

SHOW CREATE DATABASE was sometimes refused when the client had privileges for the database. (Bug#9785)

mysql ignored the MYSQL_TCP_PORT environment variable. (Bug#5792)

ROW_COUNT() returned an incorrect result after EXECUTE of a prepared statement. (Bug#14956)

Invalid casts to DATE values now result in a message of Incorrect datetime value, rather than Truncated incorrect datetime value. (Bug#8294)

Attempts to assign NULL to a NOT NULL column in strict mode now result in a message of Column 'col_name' cannot be null, rather than Column set to default value; NULL supplied to NOT NULL column 'col_name' at row n. (Bug#11491)

For binary string data types, mysqldump --hex-blob produced an illegal output value of 0x rather than ''. (Bug#13318)

Some comparisons for the IN() operator were inconsistent with equivalent comparisons for the = operator. (Bug#12612)

Partitioning: allows distributing portions of individual tables across a filesystem, according to rules which can be set when the table is created. In effect, different portions of a table are stored as separate tables in different locations, but from the user point of view, the partitioned table is still a single table. See Kapitel 17, Partitionierung, for further information on this functionality. (Author: Mikael Ronström)

Plugin API: MySQL 5.1 adds support for a very flexible plugin API that enables loading and unloading of various components at runtime, without restarting the server. Although the work on this is not finished yet, plugin full-text parsers are a first step in this direction. This allows users to implement their own input filter on the indexed text, enabling full-text search capability on arbitrary data such as PDF files or other document formats. A pre-parser full-text plugin performs the actual parsing and extraction of the text and hands it over to the built-in MySQL full-text search. (Author: Sergey Vojtovich)

The plugin API requires the mysql.plugin table. When upgrading from an older version of MySQL, you should run the mysql_fix_privilege_tables command to create this table. See Abschnitt 5.6, „mysql_fix_privilege_tables — Upgrade von MySQL-Systemtabellen“.

Incompatible change: Plugins are installed in the directory named by the plugin_dir system variable. This variable also controls the location from which the server loads user-defined functions (UDFs), which is a change from earlier versions of MySQL. That is, all UDF library files now must be installed in the plugin directory. When upgrading from an older version of MySQL, you must migrate your UDF files to the plugin directory.

The Instance Manager (IM) now has some additional functionality:

The performance of boolean full-text searches (using the „+“ Operator) has been improved. See Abschnitt 12.7, „MySQL-Volltextsuche“, for more details about full-text searching. (Author: Sergey Vojtovich)

VARCHAR fields used in MySQL Cluster tables are now variable-sized; that is, they now only allocate as much space as required to store the data. Previously, a VARCHAR(n) column allocated n+2 bytes (aligned to 4 bytes), regardless if the actual inserted value required that much space. (In other words, a VARCHAR column always required the same, fixed, amount of storage as a CHAR column of the same size.)

Renamed the table_cache system variable to table_open_cache. Any scripts that refer to table_cache should be updated to use the new name.

Added the table_definition_cache system variable. If you use a large number of tables, you can create a large table definition cache to speed up opening of tables. The table definition cache takes less space and does not use file descriptors, unlike the normal table cache.

Set functions could not be aggregated in outer subqueries. (Bug#12762)

Added MAXLOCKS, MINLOCKS, MAXWRITE, and MINWRITE as allowable values of the --bdb-lock-detect option. (Bug#14876)

Added the bdb_cache_parts and bdb_region_size system variables, and allowed bdb_cache_size to be larger than 4GB on systems that support it. (Bug#14895)

Added Transactions, XA, and Savepoints columns to SHOW ENGINES output.

Added --replace to mysqldump. This option uses REPLACE INTO, rather than INSERT INTO, when writing the dumpfile.

Foreign keys were not properly enforced in TEMPORARY tables. Foreign keys now are disallowed in TEMPORARY tables. (Bug#12084)

Performing a CREATE TABLE statement with a PARTITION BY clause in a prepared statement could crash a server running in debug mode. (Bug#12097)

NDB: Specifying the wrong nodegroup in a CREATE TABLE using partitioning would lead to the table name being locked after the CREATE TABLE statement failed (that is, the table name could not be re-used). (Bug#12114)

Using ORDER BY in a query with a partitioned table on a 64-bit operating system could crash the server. (Bug#12116)

When two threads compete for the same table, a deadlock could occur if one thread has also a lock on another table through LOCK TABLES and the thread is attempting to remove the table in some manner and the other thread want locks on both tables. (Bug#10600)

N/A

The SQLDriverConnect() ODBC method did not work with recent MyODBC releases. (Bug#12393)

N/A

SQLColumns() returned no information for tables that had a column named using a reserved word. (Bug#9539)

mysql_list_dbcolumns() and insert_fields() were retrieving all rows from a table. Fixed the queries generated by these functions to return no rows. (Bug#8198)

SQLGetTypoInfo() returned tinyblob for SQL_VARBINARY and nothing for SQL_BINARY. Fixed to return varbinary for SQL_VARBINARY, binary for SQL_BINARY, and longblob for SQL_LONGVARBINARY. (Bug#8138)

Fixed Statement.cancel() causes NullPointerException if underlying connection has been closed due to server failure. (Bug#20650)

Added configuration option "noAccessToProcedureBodies" which will cause the driver to create basic parameter metadata for CallableStatements when the user does not have access to procedure bodies via "SHOW CREATE PROCEDURE" or selecting from mysql.proc instead of throwing an exception. The default value for this option is "false"

Fixed can't use XAConnection for local transactions when no global transaction is in progress. (Bug#17401)

Fixed driver fails on non-ASCII platforms. The driver was assuming that the platform character set would be a superset of MySQL's latin1 when doing the handshake for authentication, and when reading error messages. We now use Cp1252 for all strings sent to the server during the handshake phase, and a hard-coded mapping of the language systtem variable to the character set that is used for error messages. (Bug#18086)

Fixed ConnectionProperties (and thus some subclasses) are not serializable, even though some J2EE containers expect them to be. (Bug#19169)

Fixed MysqlValidConnectionChecker for JBoss doesn't work with MySQLXADataSources. (Bug#20242)

Better caching of character set converters (per-connection) to remove a bottleneck for multibyte character sets.

Added connection/datasource property pinGlobalTxToPhysicalConnection (defaults to false). When set to true, when using XAConnections, the driver ensures that operations on a given XID are always routed to the same physical connection. This allows the XAConnection to support XA START ... JOIN after XA END has been called, and is also a workaround for transaction managers that don't maintain thread affinity for a global transaction (most either always maintain thread affinity, or have it as a configuration option).

MysqlXaConnection.recover(int flags) now allows combinations of XAResource.TMSTARTRSCAN and TMENDRSCAN. To simulate the „scanning“ nature of the interface, we return all prepared XIDs for TMSTARTRSCAN, and no new XIDs for calls with TMNOFLAGS, or TMENDRSCAN when not in combination with TMSTARTRSCAN. This change was made for API compliance, as well as integration with IBM WebSphere's transaction manager.

XADataSource implemented (ported from 3.2 branch which won't be released as a product). Use com.mysql.jdbc.jdbc2.optional.MysqlXADataSource as your datasource class name in your application server to utilize XA transactions in MySQL-5.0.10 and newer.

PreparedStatement.setString() didn't work correctly when sql_mode on server contained NO_BACKSLASH_ESCAPES and no characters that needed escaping were present in the string.

Attempt detection of the MySQL type BINARY (it's an alias, so this isn't always reliable), and use the java.sql.Types.BINARY type mapping for it.

Moved -bin-g.jar file into separate debug subdirectory to avoid confusion.

Don't allow .setAutoCommit(true), or .commit() or .rollback() on an XA-managed connection as per the JDBC specification.

If the connection useTimezone is set to true, then also respect time zone conversions in escape-processed string literals (for example, "{ts ...}" and "{t ...}").

Return original column name for RSMD.getColumnName() if the column was aliased, alias name for .getColumnLabel() (if aliased), and original table name for .getTableName(). Note this only works for MySQL-4.1 and newer, as older servers don't make this information available to clients.

Setting useJDBCCompliantTimezoneShift=true (it's not the default) causes the driver to use GMT for all TIMESTAMP/DATETIME time zones, and the current VM time zone for any other type that refers to time zones. This feature can not be used when useTimezone=true to convert between server and client time zones.

Add one level of indirection of internal representation of CallableStatement parameter metadata to avoid class not found issues on JDK-1.3 for ParameterMetadata interface (which doesn't exist prior to JDBC-3.0).

Added unit tests for XADatasource, as well as friendlier exceptions for XA failures compared to the "stock" XAException (which has no messages).

Idle timeouts cause XAConnections to whine about rolling themselves back. (Bug#14729)

Added support for Connector/MXJ integration via url subprotocol jdbc:mysql:mxj://....

Moved all SQLException constructor usage to a factory in SQLError (ground-work for JDBC-4.0 SQLState-based exception classes).

Removed Java5-specific calls to BigDecimal constructor (when result set value is '', (int)0 was being used as an argument indirectly via method return value. This signature doesn't exist prior to Java5.)

Added service-provider entry to META-INF/services/java.sql.Driver for JDBC-4.0 support.

Return "[VAR]BINARY" for RSMD.getColumnTypeName() when that is actually the type, and it can be distinguished (MySQL-4.1 and newer).

When fix for Bug#14562 was merged from 3.1.12, added functionality for CallableStatement's parameter metadata to return correct information for .getParameterClassName().

Fuller synchronization of Connection to avoid deadlocks when using multithreaded frameworks that multithread a single connection (usually not recommended, but the JDBC spec allows it anyways), part of fix to Bug#14972).

Implementation of Statement.cancel() and Statement.setQueryTimeout(). Both require MySQL-5.0.0 or newer server, require a separate connection to issue the KILL QUERY statement, and in the case of setQueryTimeout() creates an additional thread to handle the timeout functionality.

Note: Failures to cancel the statement for setQueryTimeout() may manifest themselves as RuntimeExceptions rather than failing silently, as there is currently no way to unblock the thread that is executing the query being cancelled due to timeout expiration and have it throw the exception instead.

Fixed updatable result set throws ClassCastException when there is row data and moveToInsertRow() is called. (Fixes Bug#20479)

Fixed Updatable result set that contains a BIT column fails when server-side prepared statements are used. (Fixes Bug#20485)

Fixed memory leak with profileSQL=true. (Fixes Bug#16987)

Connection fails to localhost when using timeout and IPv6 is configured. (Fixes Bug#19726)

Fixed NullPointerException in MysqlDataSourceFactory due to Reference containing RefAddrs with null content. (Fixes Bug#16791)

Fixed ResultSet.getShort() for UNSIGNED TINYINT returns incorrect values when using server-side prepared statements. (Fixes Bug#20306)

Fixed can't pool server-side prepared statements, exception raised when re-using them. (Fixes Bug#20687)

Fixed Bug#21062 - ResultSet.getSomeInteger() doesn't work for BIT(>1).

Fixed Bug#18880 - ResultSet.getFloatFromString() can't retrieve values near Float.MIN/MAX_VALUE.

Fixed Bug#20888 - escape of quotes in client-side prepared statements parsing not respected. Patch covers more than bug report, including NO_BACKSLASH_ESCAPES being set, and stacked quote characters forms of escaping (i.e. '' or "").

Fixed Bug#19993 - ReplicationDriver does not always round-robin load balance depending on URL used for slaves list.

INOUT parameter does not store IN value. (Bug#15464)

Exception thrown for new decimal type when using updatable result sets. (Bug#14609)

No "dos" character set in MySQL > 4.1.0. (Bug#15544)

PreparedStatement.setObject() serializes BigInteger as object, rather than sending as numeric value (and is thus not complementary to .getObject() on an UNSIGNED LONG type). (Bug#15383)

ResultSet.getShort() for UNSIGNED TINYINT returned wrong values. (Bug#11874)

lib-nodist directory missing from package breaks out-of-box build. (Bug#15676)

DBMD.getColumns() returns wrong type for BIT. (Bug#15854)

Fixed issue where driver was unable to initialize character set mapping tables. Removed reliance on .properties files to hold this information, as it turns out to be too problematic to code around class loader hierarchies that change depending on how an application is deployed. Moved information back into the CharsetMapping class. (Bug#14938)

Fixed updatable result set doesn't return AUTO_INCREMENT values for insertRow() when multiple column primary keys are used. (the driver was checking for the existence of single-column primary keys and an autoincrement value > 0 instead of a straightforward isAutoIncrement() check). (Bug#16841)

Fixed Statement.getGeneratedKeys() throws NullPointerException when no query has been processed. (Bug#17099)

Fixed driver trying to call methods that don't exist on older and newer versions of Log4j. The fix is not trying to auto-detect presense of log4j, too many different incompatible versions out there in the wild to do this reliably. (Bug#13469)

If you relied on autodetection before, you will need to add "logger=com.mysql.jdbc.log.Log4JLogger" to your JDBC URL to enable Log4J usage, or alternatively use the new "CommonsLogger" class to take care of this.

Added support for Apache Commons logging, use "com.mysql.jdbc.log.CommonsLogger" as the value for the "logger" configuration property.

LogFactory now prepends "com.mysql.jdbc.log" to log class name if it can't be found as-specified. This allows you to use "short names" for the built-in log factories, for example "logger=CommonsLogger" instead of "logger=com.mysql.jdbc.log.CommonsLogger".

Fixed issue with ReplicationConnection incorrectly copying state, doesn't transfer connection context correctly when transitioning between the same read-only states. (Bug#15570)

Fixed issue where server-side prepared statements don't cause truncation exceptions to be thrown when truncation happens. (Bug#18041)

Added performance feature, re-writing of batched executes for Statement.executeBatch() (for all DML statements) and PreparedStatement.executeBatch() (for INSERTs with VALUE clauses only). Enable by using "rewriteBatchedStatements=true" in your JDBC URL.

Fixed CallableStatement.registerOutParameter() not working when some parameters pre-populated. Still waiting for feedback from JDBC experts group to determine what correct parameter count from getMetaData() should be, however. (Bug#17898)

Fixed calling clearParameters() on a closed prepared statement causes NPE. (Bug#17587)

Map "latin1" on MySQL server to CP1252 for MySQL > 4.1.0.

Added additional accessor and mutator methods on ConnectionProperties so that DataSource users can use same naming as regular URL properties.

Fixed data truncation and getWarnings() only returns last warning in set. (Bug#18740)

Improved performance of retrieving BigDecimal, Time, Timestamp and Date values from server-side prepared statements by creating fewer short-lived instances of Strings when the native type is not an exact match for the requested type. Fixes Bug#18496 for BigDecimals.

Fixed aliased column names where length of name > 251 are corrupted. (Bug#18554)

Fixed ResultSet.wasNull() not always reset correctly for booleans when done via conversion for server-side prepared statements. (Bug#17450)

Fixed invalid classname returned for ResultSetMetaData.getColumnClassName() for BIGINT type. (Bug#19282)

Fixed case where driver wasn't reading server status correctly when fetching server-side prepared statement rows, which in some cases could cause warning counts to be off, or multiple result sets to not be read off the wire.

Driver now aware of fix for BIT type metadata that went into MySQL-5.0.21 for server not reporting length consistently (Bug#13601).

Fixed PreparedStatement.setObject(int, Object, int) doesn't respect scale of BigDecimals. (Bug#19615)

Fixed ResultSet.wasNull() returns incorrect value when extracting native string from server-side prepared statement generated result set. (Bug#19282)

Fixed client-side prepared statement bug with embedded ? characters inside quoted identifiers (it was recognized as a placeholder, when it was not).

Don't allow executeBatch() for CallableStatements with registered OUT/INOUT parameters (JDBC compliance).

Fall back to platform-encoding for URLDecoder.decode() when parsing driver URL properties if the platform doesn't have a two-argument version of this method.

Java type conversion may be incorrect for MEDIUMINT. (Bug#14562)

Added configuration property useGmtMillisForDatetimes which when set to true causes ResultSet.getDate(), .getTimestamp() to return correct millis-since GMT when .getTime() is called on the return value (currently default is false for legacy behavior).

Fixed DatabaseMetaData.stores*Identifiers():

DatabaseMetaData.getColumns() doesn't return TABLE_NAME correctly. (Bug#14815)

Escape processor replaces quote character in quoted string with string delimiter. (Bug#14909)

OpenOffice expects DBMD.supportsIntegrityEnhancementFacility() to return true if foreign keys are supported by the datasource, even though this method also covers support for check constraints, which MySQL doesn't have. Setting the configuration property overrideSupportsIntegrityEnhancementFacility to true causes the driver to return true for this method. (Bug#12975)

Added com.mysql.jdbc.testsuite.url.default system property to set default JDBC url for testsuite (to speed up bug resolution when I'm working in Eclipse).

Unable to initialize character set mapping tables (due to J2EE classloader differences). (Bug#14938)

Deadlock while closing server-side prepared statements from multiple threads sharing one connection. (Bug#14972)

logSlowQueries should give better info. (Bug#12230)

Extraneous sleep on autoReconnect. (Bug#13775)

Driver incorrectly closes streams passed as arguments to PreparedStatements. Reverts to legacy behavior by setting the JDBC configuration property autoClosePStmtStreams to true (also included in the 3-0-Compat configuration „bundle“). (Bug#15024)

maxQuerySizeToLog is not respected. Added logging of bound values for execute() phase of server-side prepared statements when profileSQL=true as well. (Bug#13048)

Usage advisor complains about unreferenced columns, even though they've been referenced. (Bug#15065)

Don't increase timeout for failover/reconnect. (Bug#6577)

Process escape tokens in Connection.prepareStatement(...). (Bug#15141) You can disable this behavior by setting the JDBC URL configuration property processEscapeCodesForPrepStmts to false.

Reconnect during middle of executeBatch() should not occur if autoReconnect is enabled. (Bug#13255)

Spurious ! on console when character encoding is utf8. (Bug#11629)

Fixed statements generated for testcases missing ; for „plain“ statements.

Incorrect generation of testcase scripts for server-side prepared statements. (Bug#11663)

Fixed regression caused by fix for Bug#11552 that caused driver to return incorrect values for unsigned integers when those integers where within the range of the positive signed type.

Moved source code to Subversion repository.

Escape tokenizer doesn't respect stacked single quotes for escapes. (Bug#11797)

GEOMETRY type not recognized when using server-side prepared statements.

ReplicationConnection won't switch to slave, throws „Catalog can't be null“ exception. (Bug#11879)

Properties shared between master and slave with replication connection. (Bug#12218)

Statement.getWarnings() fails with NPE if statement has been closed. (Bug#10630)

Only get char[] from SQL in PreparedStatement.ParseInfo() when needed.

Geometry types not handled with server-side prepared statements. (Bug#12104)

StringUtils.getBytes() doesn't work when using multi-byte character encodings and a length in characters is specified. (Bug#11614)

Pstmt.setObject(...., Types.BOOLEAN) throws exception. (Bug#11798)

maxPerformance.properties mis-spells „elideSetAutoCommits“. (Bug#11976)

DBMD.storesLower/Mixed/UpperIdentifiers() reports incorrect values for servers deployed on Windows. (Bug#11575)

ResultSet.moveToCurrentRow() fails to work when preceded by a call to ResultSet.moveToInsertRow(). (Bug#11190)

VARBINARY data corrupted when using server-side prepared statements and .setBytes(). (Bug#11115)

explainSlowQueries hangs with server-side prepared statements. (Bug#12229)

Escape processor didn't honor strings demarcated with double quotes. (Bug#11498)

Lifted restriction of changing streaming parameters with server-side prepared statements. As long as all streaming parameters were set before execution, .clearParameters() does not have to be called. (due to limitation of client/server protocol, prepared statements can not reset individual stream data on the server side).

Reworked Field class, *Buffer, and MysqlIO to be aware of field lengths > Integer.MAX_VALUE.

Updated DBMD.supportsCorrelatedQueries() to return true for versions > 4.1, supportsGroupByUnrelated() to return true and getResultSetHoldability() to return HOLD_CURSORS_OVER_COMMIT.

Handling of catalog argument in DatabaseMetaData.getIndexInfo(), which also means changes to the following methods in DatabaseMetaData: (Bug#12541)

The catalog argument in all of these methods now behaves in the following way:

Added Connection.isMasterConnection() for clients to be able to determine if a multi-host master/slave connection is connected to the first host in the list.

Tokenizer for = in URL properties was causing sessionVariables=.... to be parameterized incorrectly. (Bug#12753)

Foreign key information that is quoted is parsed incorrectly when DatabaseMetaData methods use that information. (Bug#11781)

The sendBlobChunkSize property is now clamped to max_allowed_packet with consideration of stream buffer size and packet headers to avoid PacketTooBigExceptions when max_allowed_packet is similar in size to the default sendBlobChunkSize which is 1M.

CallableStatement.clearParameters() now clears resources associated with INOUT/OUTPUT parameters as well as INPUT parameters.

Connection.prepareCall() is database name case-sensitive (on Windows systems). (Bug#12417)

cp1251 incorrectly mapped to win1251 for servers newer than 4.0.x. (Bug#12752)

java.sql.Types.OTHER returned for BINARY and VARBINARY columns when using DatabaseMetaData.getColumns(). (Bug#12970)

ServerPreparedStatement.getBinding() now checks if the statement is closed before attempting to reference the list of parameter bindings, to avoid throwing a NullPointerException.

ResultSetMetaData from Statement.getGeneratedKeys() caused a NullPointerException to be thrown whenever a method that required a connection reference was called. (Bug#13277)

Backport of Field class, ResultSetMetaData.getColumnClassName(), and ResultSet.getObject(int) changes from 5.0 branch to fix behavior surrounding VARCHAR BINARY/VARBINARY and related types.

Fixed NullPointerException when converting catalog parameter in many DatabaseMetaDataMethods to byte[]s (for the result set) when the parameter is null. (null isn't technically allowed by the JDBC specification, but we've historically allowed it).

Backport of VAR[BINARY|CHAR] [BINARY] types detection from 5.0 branch.

Read response in MysqlIO.sendFileToServer(), even if the local file can't be opened, otherwise next query issued will fail, because it's reading the response to the empty LOAD DATA INFILE packet sent to the server.

Workaround for Bug#13374: ResultSet.getStatement() on closed result set returns NULL (as per JDBC 4.0 spec, but not backward-compatible). Set the connection property retainStatementAfterResultSetClose to true to be able to retrieve a ResultSet's statement after the ResultSet has been closed via .getStatement() (the default is false, to be JDBC-compliant and to reduce the chance that code using JDBC leaks Statement instances).

URL configuration parameters don't allow ‘&’ or ‘=’ in their values. The JDBC driver now parses configuration parameters as if they are encoded using the application/x-www-form-urlencoded format as specified by java.net.URLDecoder (http://java.sun.com/j2se/1.5.0/docs/api/java/net/URLDecoder.html). (Bug#13453)

If the ‘%’ character is present in a configuration property, it must now be represented as %25, which is the encoded form of ‘%’ when using application/x-www-form-urlencoded encoding.

The configuration property sessionVariables now allows you to specify variables that start with the ‘@’ sign.

When gatherPerfMetrics is enabled for servers older than 4.1.0, a NullPointerException is thrown from the constructor of ResultSet if the query doesn't use any tables. (Bug#13043)

Fixed connecting without a database specified raised an exception in MysqlIO.changeDatabaseTo().

Initial implemention of ParameterMetadata for PreparedStatement.getParameterMetadata(). Only works fully for CallableStatements, as current server-side prepared statements return every parameter as a VARCHAR type.

Overhaul of character set configuration, everything now lives in a properties file.

Driver now correctly uses CP932 if available on the server for Windows-31J, CP932 and MS932 java encoding names, otherwise it resorts to SJIS, which is only a close approximation. Currently only MySQL-5.0.3 and newer (and MySQL-4.1.12 or .13, depending on when the character set gets backported) can reliably support any variant of CP932.

com.mysql.jdbc.PreparedStatement.ParseInfo does unnecessary call to toCharArray(). (Bug#9064)

Memory leak in ServerPreparedStatement if serverPrepare() fails. (Bug#10144)

Actually write manifest file to correct place so it ends up in the binary jar file.

Added createDatabaseIfNotExist property (default is false), which will cause the driver to ask the server to create the database specified in the URL if it doesn't exist. You must have the appropriate privileges for database creation for this to work.

Unsigned SMALLINT treated as signed for ResultSet.getInt(), fixed all cases for UNSIGNED integer values and server-side prepared statements, as well as ResultSet.getObject() for UNSIGNED TINYINT. (Bug#10156)

Double quotes not recognized when parsing client-side prepared statements. (Bug#10155)

Made enableStreamingResults() visible on com.mysql.jdbc.jdbc2.optional.StatementWrapper.

Made ServerPreparedStatement.asSql() work correctly so auto-explain functionality would work with server-side prepared statements.

Made JDBC2-compliant wrappers public in order to allow access to vendor extensions.

Cleaned up logging of profiler events, moved code to dump a profiler event as a string to com.mysql.jdbc.log.LogUtils so that third parties can use it.

DatabaseMetaData.supportsMultipleOpenResults() now returns true. The driver has supported this for some time, DBMD just missed that fact.

Driver doesn't support {?=CALL(...)} for calling stored functions. This involved adding support for function retrieval to DatabaseMetaData.getProcedures() and getProcedureColumns() as well. (Bug#10310)

SQLException thrown when retrieving YEAR(2) with ResultSet.getString(). The driver will now always treat YEAR types as java.sql.Dates and return the correct values for getString(). Alternatively, the yearIsDateType connection property can be set to false and the values will be treated as SHORTs. (Bug#10485)

The datatype returned for TINYINT(1) columns when tinyInt1isBit=true (the default) can be switched between Types.BOOLEAN and Types.BIT using the new configuration property transformedBitIsBoolean, which defaults to false. If set to false (the default), DatabaseMetaData.getColumns() and ResultSetMetaData.getColumnType() will return Types.BOOLEAN for TINYINT(1) columns. If true, Types.BOOLEAN will be returned instead. Regardless of this configuration property, if tinyInt1isBit is enabled, columns with the type TINYINT(1) will be returned as java.lang.Boolean instances from ResultSet.getObject(...), and ResultSetMetaData.getColumnClassName() will return java.lang.Boolean.

SQLException is thrown when using property characterSetResults with cp932 or eucjpms. (Bug#10496)

Reorganized directory layout. Sources now are in src folder. Don't pollute parent directory when building, now output goes to ./build, distribution goes to ./dist.

Added support/bug hunting feature that generates .sql test scripts to STDERR when autoGenerateTestcaseScript is set to true.

0-length streams not sent to server when using server-side prepared statements. (Bug#10850)

Setting cachePrepStmts=true now causes the Connection to also cache the check the driver performs to determine if a prepared statement can be server-side or not, as well as caches server-side prepared statements for the lifetime of a connection. As before, the prepStmtCacheSize parameter controls the size of these caches.

Try to handle OutOfMemoryErrors more gracefully. Although not much can be done, they will in most cases close the connection they happened on so that further operations don't run into a connection in some unknown state. When an OOM has happened, any further operations on the connection will fail with a „Connection closed“ exception that will also list the OOM exception as the reason for the implicit connection close event.

Don't send COM_RESET_STMT for each execution of a server-side prepared statement if it isn't required.

Driver detects if you're running MySQL-5.0.7 or later, and does not scan for LIMIT ?[,?] in statements being prepared, as the server supports those types of queries now.

VARBINARY data corrupted when using server-side prepared statements and ResultSet.getBytes(). (Bug#11115)

Connection.setCatalog() is now aware of the useLocalSessionState configuration property, which when set to true will prevent the driver from sending USE ... to the server if the requested catalog is the same as the current catalog.

Added the following configuration bundles, use one or many via the useConfigs configuration property:

Added maintainTimeStats configuration property (defaults to true), which tells the driver whether or not to keep track of the last query time and the last successful packet sent to the server's time. If set to false, removes two syscalls per query.

autoReconnect ping causes exception on connection startup. (Bug#11259)

Connector/J dumping query into SQLException twice. (Bug#11360)

Fixed PreparedStatement.setClob() not accepting null as a parameter.

Production package doesn't include JBoss integration classes. (Bug#11411)

Removed nonsensical „costly type conversion“ warnings when using usage advisor.

Fixed DatabaseMetaData.getTables() returning views when they were not asked for as one of the requested table types.

Added support for new precision-math DECIMAL type in MySQL 5.0.3 and up.

Fixed ResultSet.getTime() on a NULL value for server-side prepared statements throws NPE.

Made Connection.ping() a public method.

DATE_FORMAT() queries returned as BLOBs from getObject(). (Bug#8868)

ServerPreparedStatements now correctly „stream“ BLOB/CLOB data to the server. You can configure the threshold chunk size using the JDBC URL property blobSendChunkSize (the default is 1MB).

BlobFromLocator now uses correct identifier quoting when generating prepared statements.

Server-side session variables can be preset at connection time by passing them as a comma-delimited list for the connection property sessionVariables.

Fixed regression in ping() for users using autoReconnect=true.

PreparedStatement.addBatch() doesn't work with server-side prepared statements and streaming BINARY data. (Bug#9040)

DBMD.supportsMixedCase*Identifiers() returns wrong value on servers running on case-sensitive filesystems. (Bug#8800)

Cannot use UTF-8 for characterSetResults configuration property. (Bug#9206)

A continuation of Bug#8868, where functions used in queries that should return non-string types when resolved by temporary tables suddenly become opaque binary strings (work-around for server limitation). Also fixed fields with type of CHAR(n) CHARACTER SET BINARY to return correct/matching classes for RSMD.getColumnClassName() and ResultSet.getObject(). (Bug#9236)

DBMD.supportsResultSetConcurrency() not returning true for forward-only/read-only result sets (we obviously support this). (Bug#8792)

DATA_TYPE column from DBMD.getBestRowIdentifier() causes ArrayIndexOutOfBoundsException when accessed (and in fact, didn't return any value). (Bug#8803)

Check for empty strings ('') when converting CHAR/VARCHAR column data to numbers, throw exception if emptyStringsConvertToZero configuration property is set to false (for backward-compatibility with 3.0, it is now set to true by default, but will most likely default to false in 3.2).

PreparedStatement.getMetaData() inserts blank row in database under certain conditions when not using server-side prepared statements. (Bug#9320)

Connection.canHandleAsPreparedStatement() now makes „best effort“ to distinguish LIMIT clauses with placeholders in them from ones without in order to have fewer false positives when generating work-arounds for statements the server cannot currently handle as server-side prepared statements.

Fixed build.xml to not compile log4j logging if log4j not available.

Added support for the c3p0 connection pool's (http://c3p0.sf.net/) validation/connection checker interface which uses the lightweight COM_PING call to the server if available. To use it, configure your c3p0 connection pool's connectionTesterClassName property to use com.mysql.jdbc.integration.c3p0.MysqlConnectionTester.

Better detection of LIMIT inside/outside of quoted strings so that the driver can more correctly determine whether a prepared statement can be prepared on the server or not.

Stored procedures with same name in different databases confuse the driver when it tries to determine parameter counts/types. (Bug#9319)

Added finalizers to ResultSet and Statement implementations to be JDBC spec-compliant, which requires that if not explicitly closed, these resources should be closed upon garbage collection.

Stored procedures with DECIMAL parameters with storage specifications that contained ‘,’ in them would fail. (Bug#9682)

PreparedStatement.setObject(int, Object, int type, int scale) now uses scale value for BigDecimal instances.

Statement.getMoreResults() could throw NPE when existing result set was .close()d. (Bug#9704)

The performance metrics feature now gathers information about number of tables referenced in a SELECT.

The logging system is now automatically configured. If the value has been set by the user, via the URL property logger or the system property com.mysql.jdbc.logger, then use that, otherwise, autodetect it using the following steps:

DBMD.getTables() shouldn't return tables if views are asked for, even if the database version doesn't support views. (Bug#9778)

Fixed driver not returning true for -1 when ResultSet.getBoolean() was called on result sets returned from server-side prepared statements.

Added a Manifest.MF file with implementation information to the .jar file.

More tests in Field.isOpaqueBinary() to distinguish opaque binary (that is, fields with type CHAR(n) and CHARACTER SET BINARY) from output of various scalar and aggregate functions that return strings.

Should accept null for catalog (meaning use current) in DBMD methods, even though it's not JDBC-compliant for legacy's sake. Disable by setting connection property nullCatalogMeansCurrent to false (which will be the default value in C/J 3.2.x). (Bug#9917)

Should accept null for name patterns in DBMD (meaning ‘%’), even though it isn't JDBC compliant, for legacy's sake. Disable by setting connection property nullNamePatternMatchesAll to false (which will be the default value in C/J 3.2.x). (Bug#9769)

Timestamp key column data needed _binary stripped for UpdatableResultSet.refreshRow(). (Bug#7686)

Timestamps converted incorrectly to strings with server-side prepared statements and updatable result sets. (Bug#7715)

Detect new sql_mode variable in string form (it used to be integer) and adjust quoting method for strings appropriately.

Added holdResultsOpenOverStatementClose property (default is false), that keeps result sets open over statement.close() or new execution on same statement (suggested by Kevin Burton).

Infinite recursion when „falling back“ to master in failover configuration. (Bug#7952)

Disable multi-statements (if enabled) for MySQL-4.1 versions prior to version 4.1.10 if the query cache is enabled, as the server returns wrong results in this configuration.

Fixed duplicated code in configureClientCharset() that prevented useOldUTF8Behavior=true from working properly.

Removed dontUnpackBinaryResults functionality, the driver now always stores results from server-side prepared statements as is from the server and unpacks them on demand.

Emulated locators corrupt binary data when using server-side prepared statements. (Bug#8096)

Fixed synchronization issue with ServerPreparedStatement.serverPrepare() that could cause deadlocks/crashes if connection was shared between threads.

By default, the driver now scans SQL you are preparing via all variants of Connection.prepareStatement() to determine if it is a supported type of statement to prepare on the server side, and if it is not supported by the server, it instead prepares it as a client-side emulated prepared statement. You can disable this by passing emulateUnsupportedPstmts=false in your JDBC URL. (Bug#4718)

Remove _binary introducer from parameters used as in/out parameters in CallableStatement.

Always return byte[]s for output parameters registered as *BINARY.

Send correct value for „boolean“ true to server for PreparedStatement.setObject(n, "true", Types.BIT).

Fixed bug with Connection not caching statements from prepareStatement() when the statement wasn't a server-side prepared statement.

Choose correct „direction“ to apply time adjustments when both client and server are in GMT time zone when using ResultSet.get(..., cal) and PreparedStatement.set(...., cal).

Added dontTrackOpenResources option (default is false, to be JDBC compliant), which helps with memory use for non-well-behaved apps (that is, applications that don't close Statement objects when they should).

ResultSet.getString() doesn't maintain format stored on server, bug fix only enabled when noDatetimeStringSync property is set to true (the default is false). (Bug#8428)

Fixed NPE in ResultSet.realClose() when using usage advisor and result set was already closed.

PreparedStatements not creating streaming result sets. (Bug#8487)

Don't pass NULL to String.valueOf() in ResultSet.getNativeConvertToString(), as it stringifies it (that is, returns null), which is not correct for the method in question.

ResultSet.getBigDecimal() throws exception when rounding would need to occur to set scale. The driver now chooses a rounding mode of „half up“ if non-rounding BigDecimal.setScale() fails. (Bug#8424)

Added useLocalSessionState configuration property, when set to true the JDBC driver trusts that the application is well-behaved and only sets autocommit and transaction isolation levels using the methods provided on java.sql.Connection, and therefore can manipulate these values in many cases without incurring round-trips to the database server.

Added enableStreamingResults() to Statement for connection pool implementations that check Statement.setFetchSize() for specification-compliant values. Call Statement.setFetchSize(>=0) to disable the streaming results for that statement.

Added support for BIT type in MySQL-5.0.3. The driver will treat BIT(1-8) as the JDBC standard BIT type (which maps to java.lang.Boolean), as the server does not currently send enough information to determine the size of a bitfield when < 9 bits are declared. BIT(>9) will be treated as VARBINARY, and will return byte[] when getObject() is called.

Fixed hang on SocketInputStream.read() with Statement.setMaxRows() and multiple result sets when driver has to truncate result set directly, rather than tacking a LIMIT n on the end of it.

DBMD.getProcedures() doesn't respect catalog parameter. (Bug#7026)

Fix comparisons made between string constants and dynamic strings that are converted with either toUpperCase() or toLowerCase() to use Locale.ENGLISH, as some locales „override“ case rules for English. Also use StringUtils.indexOfIgnoreCase() instead of .toUpperCase().indexOf(), avoids creating a very short-lived transient String instance.

Server-side prepared statements did not honor zeroDateTimeBehavior property, and would cause class-cast exceptions when using ResultSet.getObject(), as the all-zero string was always returned. (Bug#5235)

Fixed batched updates with server prepared statements weren't looking if the types had changed for a given batched set of parameters compared to the previous set, causing the server to return the error „Wrong arguments to mysql_stmt_execute()“.

Handle case when string representation of timestamp contains trailing ‘.’ with no numbers following it.

Inefficient detection of pre-existing string instances in ResultSet.getNativeString(). (Bug#5706)

Don't throw exceptions for Connection.releaseSavepoint().

Use a per-session Calendar instance by default when decoding dates from ServerPreparedStatements (set to old, less performant behavior by setting property dynamicCalendars=true).

Added experimental configuration property dontUnpackBinaryResults, which delays unpacking binary result set values until they're asked for, and only creates object instances for non-numerical values (it is set to false by default). For some usecase/jvm combinations, this is friendlier on the garbage collector.

UNSIGNED BIGINT unpacked incorrectly from server-side prepared statement result sets. (Bug#5729)

ServerSidePreparedStatement allocating short-lived objects unnecessarily. (Bug#6225)

Removed unwanted new Throwable() in ResultSet constructor due to bad merge (caused a new object instance that was never used for every result set created). Found while profiling for Bug#6359.

Fixed too-early creation of StringBuffer in EscapeProcessor.escapeSQL(), also return String when escaping not needed (to avoid unnecessary object allocations). Found while profiling for Bug#6359.

Use null-safe-equals for key comparisons in updatable result sets.

SUM() on DECIMAL with server-side prepared statement ignores scale if zero-padding is needed (this ends up being due to conversion to DOUBLE by server, which when converted to a string to parse into BigDecimal, loses all „padding“ zeros). (Bug#6537)

Use DatabaseMetaData.getIdentifierQuoteString() when building DBMD queries.

Use 1MB packet for sending file for LOAD DATA LOCAL INFILE if that is < max_allowed_packet on server.

ResultSetMetaData.getColumnDisplaySize() returns incorrect values for multi-byte charsets. (Bug#6399)

Make auto-deserialization of java.lang.Objects stored in BLOB columns configurable via autoDeserialize property (defaults to false).

Re-work Field.isOpaqueBinary() to detect CHAR(n) CHARACTER SET BINARY to support fixed-length binary fields for ResultSet.getObject().

Use our own implementation of buffered input streams to get around blocking behavior of java.io.BufferedInputStream. Disable this with useReadAheadInput=false.

Failing to connect to the server when one of the addresses for the given host name is IPV6 (which the server does not yet bind on). The driver now loops through all IP addresses for a given host, and stops on the first one that accepts() a socket.connect(). (Bug#6348)

Connector/J 3.1.3 beta does not handle integers correctly (caused by changes to support unsigned reads in Buffer.readInt() -> Buffer.readShort()). (Bug#4510)

Added support in DatabaseMetaData.getTables() and getTableTypes() for views, which are now available in MySQL server 5.0.x.

ServerPreparedStatement.execute*() sometimes threw ArrayIndexOutOfBoundsException when unpacking field metadata. (Bug#4642)

Optimized integer number parsing, enable „old“ slower integer parsing using JDK classes via useFastIntParsing=false property.

Added useOnlyServerErrorMessages property, which causes message text in exceptions generated by the server to only contain the text sent by the server (as opposed to the SQLState's „standard“ description, followed by the server's error message). This property is set to true by default.

ResultSet.wasNull() does not work for primatives if a previous null was returned. (Bug#4689)

Track packet sequence numbers if enablePacketDebug=true, and throw an exception if packets received out-of-order.

ResultSet.getObject() returns wrong type for strings when using prepared statements. (Bug#4482)

Calling MysqlPooledConnection.close() twice (even though an application error), caused NPE. Fixed.

ServerPreparedStatements dealing with return of DECIMAL type don't work. (Bug#5012)

ResultSet.getObject() doesn't return type Boolean for pseudo-bit types from prepared statements on 4.1.x (shortcut for avoiding extra type conversion when using binary-encoded result sets obscured test in getObject() for „pseudo“ bit type). (Bug#5032)

You can now use URLs in LOAD DATA LOCAL INFILE statements, and the driver will use Java's built-in handlers for retreiving the data and sending it to the server. This feature is not enabled by default, you must set the allowUrlInLocalInfile connection property to true.

The driver is more strict about truncation of numerics on ResultSet.get*(), and will throw an SQLException when truncation is detected. You can disable this by setting jdbcCompliantTruncation to false (it is enabled by default, as this functionality is required for JDBC compliance).

Added three ways to deal with all-zero datetimes when reading them from a ResultSet: exception (the default), which throws an SQLException with an SQLState of S1009; convertToNull, which returns NULL instead of the date; and round, which rounds the date to the nearest closest value which is '0001-01-01'.

Fixed ServerPreparedStatement to read prepared statement metadata off the wire, even though it's currently a placeholder instead of using MysqlIO.clearInputStream() which didn't work at various times because data wasn't available to read from the server yet. This fixes sporadic errors users were having with ServerPreparedStatements throwing ArrayIndexOutOfBoundExceptions.

Use com.mysql.jdbc.Message's classloader when loading resource bundle, should fix sporadic issues when the caller's classloader can't locate the resource bundle.

Mangle output parameter names for CallableStatements so they will not clash with user variable names.

Added support for INOUT parameters in CallableStatements.

Null bitmask sent for server-side prepared statements was incorrect. (Bug#4119)

Use SQL Standard SQL states by default, unless useSqlStateCodes property is set to false.

Added packet debuging code (see the enablePacketDebug property documentation).

Added constants for MySQL error numbers (publicly accessible, see com.mysql.jdbc.MysqlErrorNumbers), and the ability to generate the mappings of vendor error codes to SQLStates that the driver uses (for documentation purposes).

Externalized more messages (on-going effort).

Error in retrieval of mediumint column with prepared statements and binary protocol. (Bug#4311)

Support new time zone variables in MySQL-4.1.3 when useTimezone=true.

Support for unsigned numerics as return types from prepared statements. This also causes a change in ResultSet.getObject() for the bigint unsigned type, which used to return BigDecimal instances, it now returns instances of java.lang.BigInteger.

Fixed stored procedure parameter parsing info when size was specified for a parameter (for example, char(), varchar()).

Enabled callable statement caching via cacheCallableStmts property.

Fixed case when no output parameters specified for a stored procedure caused a bogus query to be issued to retrieve out parameters, leading to a syntax error from the server.

Fixed case when no parameters could cause a NullPointerException in CallableStatement.setOutputParameters().

Removed wrapping of exceptions in MysqlIO.changeUser().

Fixed sending of split packets for large queries, enabled nio ability to send large packets as well.

Added .toString() functionality to ServerPreparedStatement, which should help if you're trying to debug a query that is a prepared statement (it shows SQL as the server would process).

Added gatherPerformanceMetrics property, along with properties to control when/where this info gets logged (see docs for more info).

ServerPreparedStatements weren't actually de-allocating server-side resources when .close() was called.

Added logSlowQueries property, along with slowQueriesThresholdMillis property to control when a query should be considered „slow.“

Correctly map output parameters to position given in prepareCall() versus. order implied during registerOutParameter(). (Bug#3146)

Correctly detect initial character set for servers >= 4.1.0.

Cleaned up detection of server properties.

Support placeholder for parameter metadata for server >= 4.1.2.

getProcedures() does not return any procedures in result set. (Bug#3539)

getProcedureColumns() doesn't work with wildcards for procedure name. (Bug#3540)

DBMD.getSQLStateType() returns incorrect value. (Bug#3520)

Added connectionCollation property to cause driver to issue set collation_connection=... query on connection init if default collation for given charset is not appropriate.

Fixed DatabaseMetaData.getProcedures() when run on MySQL-5.0.0 (output of SHOW PROCEDURE STATUS changed between 5.0.0 and 5.0.1.

getWarnings() returns SQLWarning instead of DataTruncation. (Bug#3804)

Don't enable server-side prepared statements for server version 5.0.0 or 5.0.1, as they aren't compatible with the '4.1.2+' style that the driver uses (the driver expects information to come back that isn't there, so it hangs).

Fixed bug with UpdatableResultSets not using client-side prepared statements.

Fixed character encoding issues when converting bytes to ASCII when MySQL doesn't provide the character set, and the JVM is set to a multi-byte encoding (usually affecting retrieval of numeric values).

Unpack „unknown“ data types from server prepared statements as Strings.

Implemented long data (Blobs, Clobs, InputStreams, Readers) for server prepared statements.

Implemented Statement.getWarnings() for MySQL-4.1 and newer (using SHOW WARNINGS).

Default result set type changed to TYPE_FORWARD_ONLY (JDBC compliance).

Centralized setting of result set type and concurrency.

Refactored how connection properties are set and exposed as DriverPropertyInfo as well as Connection and DataSource properties.

Support for NIO. Use useNIO=true on platforms that support NIO.

Support for transaction savepoints (MySQL >= 4.0.14 or 4.1.1).

Support for mysql_change_user(). See the changeUser() method in com.mysql.jdbc.Connection.

Reduced number of methods called in average query to be more efficient.

Prepared Statements will be re-prepared on auto-reconnect. Any errors encountered are postponed until first attempt to re-execute the re-prepared statement.

Ensure that warnings are cleared before executing queries on prepared statements, as-per JDBC spec (now that we support warnings).

Support „old“ profileSql capitalization in ConnectionProperties. This property is deprecated, you should use profileSQL if possible.

Optimized Buffer.readLenByteArray() to return shared empty byte array when length is 0.

Allow contents of PreparedStatement.setBlob() to be retained between calls to .execute*().

Deal with 0-length tokens in EscapeProcessor (caused by callable statement escape syntax).

Check for closed connection on delete/update/insert row operations in UpdatableResultSet.

Fix support for table aliases when checking for all primary keys in UpdatableResultSet.

Removed useFastDates connection property.

Correctly initialize datasource properties from JNDI Refs, including explicitly specified URLs.

DatabaseMetaData now reports supportsStoredProcedures() for MySQL versions >= 5.0.0

Fixed stack overflow in Connection.prepareCall() (bad merge).

Fixed IllegalAccessError to Calendar.getTimeInMillis() in DateTimeValue (for JDK < 1.4).

DatabaseMetaData.getColumns() is not returning correct column ordinal info for non-'%' column name patterns. (Bug#1673)

Merged fix of datatype mapping from MySQL type FLOAT to java.sql.Types.REAL from 3.0 branch.

Detect collation of column for RSMD.isCaseSensitive().

Fixed sending of queries larger than 16M.

Added named and indexed input/output parameter support to CallableStatement. MySQL-5.0.x or newer.

Fixed NullPointerException in ServerPreparedStatement.setTimestamp(), as well as year and month descrepencies in ServerPreparedStatement.setTimestamp(), setDate().

Added ability to have multiple database/JVM targets for compliance and regression/unit tests in build.xml.

Fixed NPE and year/month bad conversions when accessing some datetime functionality in ServerPreparedStatements and their resultant result sets.

Display where/why a connection was implicitly closed (to aid debugging).

CommunicationsException implemented, that tries to determine why communications was lost with a server, and displays possible reasons when .getMessage() is called.

NULL values for numeric types in binary encoded result sets causing NullPointerExceptions. (Bug#2359)

Implemented Connection.prepareCall(), and DatabaseMetaData. getProcedures() and getProcedureColumns().

Reset long binary parameters in ServerPreparedStatement when clearParameters() is called, by sending COM_RESET_STMT to the server.

Merged prepared statement caching, and .getMetaData() support from 3.0 branch.

Fixed off-by-1900 error in some cases for years in TimeUtil.fastDate/TimeCreate() when unpacking results from server-side prepared statements.

Fixed charset conversion issue in getTables(). (Bug#2502)

Implemented multiple result sets returned from a statement or stored procedure.

Server-side prepared statements were not returning datatype YEAR correctly. (Bug#2606)

Enabled streaming of result sets from server-side prepared statements.

Class-cast exception when using scrolling result sets and server-side prepared statements. (Bug#2623)

Merged unbuffered input code from 3.0.

Fixed ConnectionProperties that weren't properly exposed via accessors, cleaned up ConnectionProperties code.

NULL fields were not being encoded correctly in all cases in server-side prepared statements. (Bug#2671)

Fixed rare buffer underflow when writing numbers into buffers for sending prepared statement execution requests.

Use DocBook version of docs for shipped versions of drivers.

Added requireSSL property.

Added useServerPrepStmts property (default false). The driver will use server-side prepared statements when the server version supports them (4.1 and newer) when this property is set to true. It is currently set to false by default until all bind/fetch functionality has been implemented. Currently only DML prepared statements are implemented for 4.1 server-side prepared statements.

Track open Statements, close all when Connection.close() is called (JDBC compliance).

Timestamp/Time conversion goes in the wrong „direction“ when useTimeZone=true and server time zone differs from client time zone. (Bug#5874)

DatabaseMetaData.getIndexInfo() ignored unique parameter. (Bug#7081)

Support new protocol type MYSQL_TYPE_VARCHAR.

Added useOldUTF8Behavior' configuration property, which causes JDBC driver to act like it did with MySQL-4.0.x and earlier when the character encoding is utf-8 when connected to MySQL-4.1 or newer.

Statements created from a pooled connection were returning physical connection instead of logical connection when getConnection() was called. (Bug#7316)

PreparedStatements don't encode Big5 (and other multi-byte) character sets correctly in static SQL strings. (Bug#7033)

Connections starting up failed-over (due to down master) never retry master. (Bug#6966)

PreparedStatement.fixDecimalExponent() adding extra +, making number unparseable by MySQL server. (Bug#7061)

Timestamp key column data needed _binary stripped for UpdatableResultSet.refreshRow(). (Bug#7686)

Backported SQLState codes mapping from Connector/J 3.1, enable with useSqlStateCodes=true as a connection property, it defaults to false in this release, so that we don't break legacy applications (it defaults to true starting with Connector/J 3.1).

PreparedStatement.fixDecimalExponent() adding extra +, making number unparseable by MySQL server. (Bug#7601)

Escape sequence {fn convert(..., type)} now supports ODBC-style types that are prepended by SQL_.

Fixed duplicated code in configureClientCharset() that prevented useOldUTF8Behavior=true from working properly.

Handle streaming result sets with more than 2 billion rows properly by fixing wraparound of row number counter.

MS932, SHIFT_JIS, and Windows_31J not recognized as aliases for sjis. (Bug#7607)

Adding CP943 to aliases for sjis. (Bug#6549, fixed while fixing Bug#7607)

Which requires hex escaping of binary data when using multi-byte charsets with prepared statements. (Bug#8064)

NON_UNIQUE column from DBMD.getIndexInfo() returned inverted value. (Bug#8812)

Workaround for server Bug#9098: Default values of CURRENT_* for DATE, TIME, DATETIME, and TIMESTAMP columns can't be distinguished from string values, so UpdatableResultSet.moveToInsertRow() generates bad SQL for inserting default values.

EUCKR charset is sent as SET NAMES euc_kr which MySQL-4.1 and newer doesn't understand. (Bug#8629)

DatabaseMetaData.supportsSelectForUpdate() returns correct value based on server version.

Use hex escapes for PreparedStatement.setBytes() for double-byte charsets including „aliases“ Windows-31J, CP934, MS932.

Added support for the EUC_JP_Solaris character encoding, which maps to a MySQL encoding of eucjpms (backported from 3.1 branch). This only works on servers that support eucjpms, namely 5.0.3 or later.

Re-issue character set configuration commands when re-using pooled connections and/or Connection.changeUser() when connected to MySQL-4.1 or newer.

Fixed ResultSetMetaData.isReadOnly() to detect non-writable columns when connected to MySQL-4.1 or newer, based on existence of „original“ table and column names.

ResultSet.updateByte() when on insert row throws ArrayOutOfBoundsException. (Bug#5664)

Fixed DatabaseMetaData.getTypes() returning incorrect (this is, non-negative) scale for the NUMERIC type.

Off-by-one bug in Buffer.readString(string). (Bug#5664)

Made TINYINT(1) -> BIT/Boolean conversion configurable via tinyInt1isBit property (default true to be JDBC compliant out of the box).

Only set character_set_results during connection establishment if server version >= 4.1.1.

Fixed regression where useUnbufferedInput was defaulting to false.

ResultSet.getTimestamp() on a column with TIME in it fails. (Bug#5664)

StringUtils.escapeEasternUnicodeByteStream was still broken for GBK. (Bug#4010)

Failover for autoReconnect not using port numbers for any hosts, and not retrying all hosts. (Warning: This required a change to the SocketFactory connect() method signature, which is now public Socket connect(String host, int portNumber, Properties props); therefore, any third-party socket factories will have to be changed to support this signature. (Bug#4334)

Logical connections created by MysqlConnectionPoolDataSource will now issue a rollback() when they are closed and sent back to the pool. If your application server/connection pool already does this for you, you can set the rollbackOnPooledClose property to false to avoid the overhead of an extra rollback().

Removed redundant calls to checkRowPos() in ResultSet.

DOUBLE mapped twice in DBMD.getTypeInfo(). (Bug#4742)

Added FLOSS license exemption.

Calling .close() twice on a PooledConnection causes NPE. (Bug#4808)

DBMD.getColumns() returns incorrect JDBC type for unsigned columns. This affects type mappings for all numeric types in the RSMD.getColumnType() and RSMD.getColumnTypeNames() methods as well, to ensure that „like“ types from DBMD.getColumns() match up with what RSMD.getColumnType() and getColumnTypeNames() return. (Bug#4138, Bug#4860)

„Production“ is now „GA“ (General Availability) in naming scheme of distributions.

RSMD.getPrecision() returning 0 for non-numeric types (should return max length in chars for non-binary types, max length in bytes for binary types). This fix also fixes mapping of RSMD.getColumnType() and RSMD.getColumnTypeName() for the BLOB types based on the length sent from the server (the server doesn't distinguish between TINYBLOB, BLOB, MEDIUMBLOB or LONGBLOB at the network protocol level). (Bug#4880)

ResultSet should release Field[] instance in .close(). (Bug#5022)

ResultSet.getMetaData() should not return incorrectly initialized metadata if the result set has been closed, but should instead throw an SQLException. Also fixed for getRow() and getWarnings() and traversal methods by calling checkClosed() before operating on instance-level fields that are nullified during .close(). (Bug#5069)

Parse new time zone variables from 4.1.x servers.

Use _binary introducer for PreparedStatement.setBytes() and set*Stream() when connected to MySQL-4.1.x or newer to avoid misinterpretation during character conversion.

Fixed URL parsing error.

Using a MySQLDatasource without server name fails. (Bug#3848)

No Database Selected when using MysqlConnectionPoolDataSource. (Bug#3920)

PreparedStatement.getGeneratedKeys() method returns only 1 result for batched insertions. (Bug#3873)

Add unsigned attribute to DatabaseMetaData.getColumns() output in the TYPE_NAME column.

Added failOverReadOnly property, to allow end-user to configure state of connection (read-only/writable) when failed over.

Backported „change user“ and „reset server state“ functionality from 3.1 branch, to allow clients of MysqlConnectionPoolDataSource to reset server state on getConnection() on a pooled connection.

Don't escape SJIS/GBK/BIG5 when using MySQL-4.1 or newer.

Allow url parameter for MysqlDataSource and MysqlConnectionPool DataSource so that passing of other properties is possible from inside appservers.

Map duplicate key and foreign key errors to SQLState of 23000.

Backport documentation tooling from 3.1 branch.

Return creating statement for ResultSets created by getGeneratedKeys(). (Bug#2957)

Allow java.util.Date to be sent in as parameter to PreparedStatement.setObject(), converting it to a Timestamp to maintain full precision. (Bug#103).

Don't truncate BLOB or CLOB values when using setBytes() and/or setBinary/CharacterStream(). (Bug#2670).

Dynamically configure character set mappings for field-level character sets on MySQL-4.1.0 and newer using SHOW COLLATION when connecting.

Map binary character set to US-ASCII to support DATETIME charset recognition for servers >= 4.1.2.

Use SET character_set_results during initialization to allow any charset to be returned to the driver for result sets.

Use charsetnr returned during connect to encode queries before issuing SET NAMES on MySQL >= 4.1.0.

Add helper methods to ResultSetMetaData (getColumnCharacterEncoding() and getColumnCharacterSet()) to allow end-users to see what charset the driver thinks it should be using for the column.

Only set character_set_results for MySQL >= 4.1.0.

StringUtils.escapeSJISByteStream() not covering all eastern double-byte charsets correctly. (Bug#3511)

Renamed StringUtils.escapeSJISByteStream() to more appropriate escapeEasternUnicodeByteStream().

Not specifying database in URL caused MalformedURL exception. (Bug#3554)

Auto-convert MySQL encoding names to Java encoding names if used for characterEncoding property.

Added encoding names that are recognized on some JVMs to fix case where they were reverse-mapped to MySQL encoding names incorrectly.

Use junit.textui.TestRunner for all unit tests (to allow them to be run from the command line outside of Ant or Eclipse).

UpdatableResultSet not picking up default values for moveToInsertRow(). (Bug#3557)

Inconsistent reporting of data type. The server still doesn't return all types for *BLOBs *TEXT correctly, so the driver won't return those correctly. (Bug#3570)

DBMD.getSQLStateType() returns incorrect value. (Bug#3520)

Fixed regression in PreparedStatement.setString() and eastern character encodings.

Made StringRegressionTest 4.1-unicode aware.

Trigger a SET NAMES utf8 when encoding is forced to utf8 or utf-8 via the characterEncoding property. Previously, only the Java-style encoding name of utf-8 would trigger this.

AutoReconnect time was growing faster than exponentially. (Bug#2447)

Fixed failover always going to last host in list. (Bug#2578)

Added useUnbufferedInput parameter, and now use it by default (due to JVM issue http://developer.java.sun.com/developer/bugParade/bugs/4401235.html)

Detect on/off or 1, 2, 3 form of lower_case_table_names value on server.

Return java.lang.Integer for TINYINT and SMALLINT types from ResultSetMetaData.getColumnClassName(). (Bug#2852)

Return java.lang.Double for FLOAT type from ResultSetMetaData.getColumnClassName(). (Bug#2855)

Return [B instead of java.lang.Object for BINARY, VARBINARY and LONGVARBINARY types from ResultSetMetaData.getColumnClassName() (JDBC compliance).

Issue connection events on all instances created from a ConnectionPoolDataSource.

Don't count quoted IDs when inside a 'string' in PreparedStatement parsing. (Bug#1511)

„Friendlier“ exception message for PacketTooLargeException. (Bug#1534)

Backported fix for aliased tables and UpdatableResultSets in checkUpdatability() method from 3.1 branch.

Fix for ArrayIndexOutOfBounds exception when using Statement.setMaxRows(). (Bug#1695)

Barge blobs and split packets not being read correctly. (Bug#1576)

Fixed regression of Statement.getGeneratedKeys() and REPLACE statements.

Subsequent call to ResultSet.updateFoo() causes NPE if result set is not updatable. (Bug#1630)

Fix for 4.1.1-style authentication with no password.

Foreign Keys column sequence is not consistent in DatabaseMetaData.getImported/Exported/CrossReference(). (Bug#1731)

DatabaseMetaData.getSystemFunction() returning bad function VResultsSion. (Bug#1775)

Cross-database updatable result sets are not checked for updatability correctly. (Bug#1592)

DatabaseMetaData.getColumns() should return Types.LONGVARCHAR for MySQL LONGTEXT type.

ResultSet.getObject() on TINYINT and SMALLINT columns should return Java type Integer. (Bug#1913)

Added alwaysClearStream connection property, which causes the driver to always empty any remaining data on the input stream before each query.

Added more descriptive error message Server Configuration Denies Access to DataSource, as well as retrieval of message from server.

Autoreconnect code didn't set catalog upon reconnect if it had been changed.

Implement ResultSet.updateClob().

ResultSetMetaData.isCaseSensitive() returned wrong value for CHAR/VARCHAR columns.

Connection property maxRows not honored. (Bug#1933)

Statements being created too many times in DBMD.extractForeignKeyFromCreateTable(). (Bug#1925)

Support escape sequence {fn convert ... }. (Bug#1914)

ArrayIndexOutOfBounds when parameter number == number of parameters + 1. (Bug#1958)

ResultSet.findColumn() should use first matching column name when there are duplicate column names in SELECT query (JDBC-compliance). (Bug#2006)

Removed static synchronization bottleneck from PreparedStatement.setTimestamp().

Removed static synchronization bottleneck from instance factory method of SingleByteCharsetConverter.

Enable caching of the parsing stage of prepared statements via the cachePrepStmts, prepStmtCacheSize, and prepStmtCacheSqlLimit properties (disabled by default).

Speed up parsing of PreparedStatements, try to use one-pass whenever possible.

Fixed security exception when used in Applets (applets can't read the system property file.encoding which is needed for LOAD DATA LOCAL INFILE).

Use constants for SQLStates.

Map charset ko18_ru to ko18r when connected to MySQL-4.1.0 or newer.

Ensure that Buffer.writeString() saves room for the \0.

Fixed exception Unknown character set 'danish' on connect with JDK-1.4.0

Fixed mappings in SQLError to report deadlocks with SQLStates of 41000.

maxRows property would affect internal statements, so check it for all statement creation internal to the driver, and set to 0 when it is not.

Faster date handling code in ResultSet and PreparedStatement (no longer uses Date methods that synchronize on static calendars).

Fixed test for end of buffer in Buffer.readString().

Fixed ResultSet.previous() behavior to move current position to before result set when on first row of result set. (Bug#496)

Fixed Statement and PreparedStatement issuing bogus queries when setMaxRows() had been used and a LIMIT clause was present in the query.

refreshRow didn't work when primary key values contained values that needed to be escaped (they ended up being doubly escaped). (Bug#661)

Support InnoDB contraint names when extracting foreign key information in DatabaseMetaData (implementing ideas from Parwinder Sekhon). (Bug#517, Bug#664)

Backported 4.1 protocol changes from 3.1 branch (server-side SQL states, new field information, larger client capability flags, connect-with-database, and so forth).

Fix UpdatableResultSet to return values for getXXX() when on insert row. (Bug#675)

The insertRow in an UpdatableResultSet is now loaded with the default column values when moveToInsertRow() is called. (Bug#688)

DatabaseMetaData.getColumns() wasn't returning NULL for default values that are specified as NULL.

Change default statement type/concurrency to TYPE_FORWARD_ONLY and CONCUR_READ_ONLY (spec compliance).

Don't try and reset isolation level on reconnect if MySQL doesn't support them.

Don't wrap SQLExceptions in RowDataDynamic.

Don't change timestamp TZ twice if useTimezone==true. (Bug#774)

Fixed regression in large split-packet handling. (Bug#848)

Better diagnostic error messages in exceptions for „streaming“ result sets.

Issue exception on ResultSet.getXXX() on empty result set (wasn't caught in some cases).

Don't hide messages from exceptions thrown in I/O layers.

Don't fire connection closed events when closing pooled connections, or on PooledConnection.getConnection() with already open connections. (Bug#884)

Clip +/- INF (to smallest and largest representative values for the type in MySQL) and NaN (to 0) for setDouble/setFloat(), and issue a warning on the statement when the server does not support +/- INF or NaN.

Double-escaping of '\' when charset is SJIS or GBK and '\' appears in non-escaped input. (Bug#879)

When emptying input stream of unused rows for „streaming“ result sets, have the current thread yield() every 100 rows in order to not monopolize CPU time.

DatabaseMetaData.getColumns() getting confused about the keyword „set“ in character columns. (Bug#1099)

Fixed deadlock issue with Statement.setMaxRows().

Fixed CLOB.truncate(). (Bug#1130)

Optimized CLOB.setChracterStream(). (Bug#1131)

Made databaseName, portNumber, and serverName optional parameters for MysqlDataSourceFactory. (Bug#1246)

ResultSet.get/setString mashing char 127. (Bug#1247)

Backported authentication changes for 4.1.1 and newer from 3.1 branch.

Added com.mysql.jdbc.util.BaseBugReport to help creation of testcases for bug reports.

Added property to „clobber“ streaming results, by setting the clobberStreamingResults property to true (the default is false). This will cause a „streaming“ ResultSet to be automatically closed, and any oustanding data still streaming from the server to be discarded if another query is executed before all the data has been read from the server.

Allow bogus URLs in Driver.getPropertyInfo().

Return list of generated keys when using multi-value INSERTS with Statement.getGeneratedKeys().

Use JVM charset with filenames and LOAD DATA [LOCAL] INFILE.

Fix infinite loop with Connection.cleanup().

Changed Ant target compile-core to compile-driver, and made testsuite compilation a separate target.

Fixed result set not getting set for Statement.executeUpdate(), which affected getGeneratedKeys() and getUpdateCount() in some cases.

Unicode character 0xFFFF in a string would cause the driver to throw an ArrayOutOfBoundsException. (Bug#378).

Return correct number of generated keys when using REPLACE statements.

Fix problem detecting server character set in some cases.

Fix row data decoding error when using very large packets.

Optimized row data decoding.

Issue exception when operating on an already closed prepared statement.

Fixed SJIS encoding bug, thanks to Naoto Sato.

Optimized usage of EscapeProcessor.

Allow multiple calls to Statement.close().

Fixed MysqlPooledConnection.close() calling wrong event type.

Fixed StringIndexOutOfBoundsException in PreparedStatement.setClob().

4.1 Column Metadata fixes.

Remove synchronization from Driver.connect() and Driver.acceptsUrl().

IOExceptions during a transaction now cause the Connection to be closed.

Fixed missing conversion for YEAR type in ResultSetMetaData.getColumnTypeName().

Don't pick up indexes that start with pri as primary keys for DBMD.getPrimaryKeys().

Throw SQLExceptions when trying to do operations on a forcefully closed Connection (that is, when a communication link failure occurs).

You can now toggle profiling on/off using Connection.setProfileSql(boolean).

Fixed charset issues with database metadata (charset was not getting set correctly).

Updatable ResultSets can now be created for aliased tables/columns when connected to MySQL-4.1 or newer.

Fixed LOAD DATA LOCAL INFILE bug when file > max_allowed_packet.

Fixed escaping of 0x5c ('\') character for GBK and Big5 charsets.

Fixed ResultSet.getTimestamp() when underlying field is of type DATE.

Ensure that packet size from alignPacketSize() does not exceed max_allowed_packet (JVM bug)

Don't reset Connection.isReadOnly() when autoReconnecting.

Fixed ResultSetMetaData to return "" when catalog not known. Fixes NullPointerExceptions with Sun's CachedRowSet.

Fixed DBMD.getTypeInfo() and DBMD.getColumns() returning different value for precision in TEXT and BLOB types.

Allow ignoring of warning for „non transactional tables“ during rollback (compliance/usability) by setting ignoreNonTxTables property to true.

Fixed SQLExceptions getting swallowed on initial connect.

Fixed Statement.setMaxRows() to stop sending LIMIT type queries when not needed (performance).

Clean up Statement query/method mismatch tests (that is, INSERT not allowed with .executeQuery()).

More checks added in ResultSet traversal method to catch when in closed state.

Fixed ResultSetMetaData.isWritable() to return correct value.

Add „window“ of different NULL sorting behavior to DBMD.nullsAreSortedAtStart (4.0.2 to 4.0.10, true; otherwise, no).

Implemented Blob.setBytes(). You still need to pass the resultant Blob back into an updatable ResultSet or PreparedStatement to persist the changes, because MySQL does not support „locators“.

Backported 4.1 charset field info changes from Connector/J 3.1.

Fixed Buffer.fastSkipLenString() causing ArrayIndexOutOfBounds exceptions with some queries when unpacking fields.

Implemented an empty TypeMap for Connection.getTypeMap() so that some third-party apps work with MySQL (IBM WebSphere 5.0 Connection pool).

Added missing LONGTEXT type to DBMD.getColumns().

Retrieve TX_ISOLATION from database for Connection.getTransactionIsolation() when the MySQL version supports it, instead of an instance variable.

Quote table names in DatabaseMetaData.getColumns(), getPrimaryKeys(), getIndexInfo(), getBestRowIdentifier().

Greatly reduce memory required for setBinaryStream() in PreparedStatements.

Fixed ResultSet.isBeforeFirst() for empty result sets.

Added update options for foreign key metadata.

Added quoted identifiers to database names for Connection.setCatalog.

Added support for quoted identifiers in PreparedStatement parser.

Streamlined character conversion and byte[] handling in PreparedStatements for setByte().

Reduce memory footprint of PreparedStatements by sharing outbound packet with MysqlIO.

Added strictUpdates property to allow control of amount of checking for „correctness“ of updatable result sets. Set this to false if you want faster updatable result sets and you know that you create them from SELECT statements on tables with primary keys and that you have selected all primary keys in your query.

Added support for 4.0.8-style large packets.

Fixed PreparedStatement.executeBatch() parameter overwriting.

Changed charsToByte in SingleByteCharConverter to be non-static.

Changed SingleByteCharConverter to use lazy initialization of each converter.

Fixed charset handling in Fields.java.

Implemented Connection.nativeSQL().

More robust escape tokenizer: Recognize -- comments, and allow nested escape sequences (see testsuite.EscapeProcessingTest).

DBMD.getImported/ExportedKeys() now handles multiple foreign keys per table.

Fixed ResultSetMetaData.getPrecision() returning incorrect values for some floating-point types.

Fixed ResultSetMetaData.getColumnTypeName() returning BLOB for TEXT and TEXT for BLOB types.

Fixed Buffer.isLastDataPacket() for 4.1 and newer servers.

Added CLIENT_LONG_FLAG to be able to get more column flags (isAutoIncrement() being the most important).

Because of above, implemented ResultSetMetaData.isAutoIncrement() to use Field.isAutoIncrement().

Honor lower_case_table_names when enabled in the server when doing table name comparisons in DatabaseMetaData methods.

Some MySQL-4.1 protocol support (extended field info from selects).

Use non-aliased table/column names and database names to fullly qualify tables and columns in UpdatableResultSet (requires MySQL-4.1 or newer).

Allow user to alter behavior of Statement/ PreparedStatement.executeBatch() via continueBatchOnError property (defaults to true).

Check for connection closed in more Connection methods (createStatement, prepareStatement, setTransactionIsolation, setAutoCommit).

More robust implementation of updatable result sets. Checks that all primary keys of the table have been selected.

LOAD DATA LOCAL INFILE ... now works, if your server is configured to allow it. Can be turned off with the allowLoadLocalInfile property (see the README).

Substitute '?' for unknown character conversions in single-byte character sets instead of '\0'.

NamedPipeSocketFactory now works (only intended for Windows), see README for instructions.

Fixed issue with updatable result sets and PreparedStatements not working.

Fixed ResultSet.setFetchDirection(FETCH_UNKNOWN).

Fixed issue when calling Statement.setFetchSize() when using arbitrary values.

Fixed incorrect conversion in ResultSet.getLong().

Implemented ResultSet.updateBlob().

Removed duplicate code from UpdatableResultSet (it can be inherited from ResultSet, the extra code for each method to handle updatability I thought might someday be necessary has not been needed).

Fixed UnsupportedEncodingException thrown when „forcing“ a character encoding via properties.

Fixed various non-ASCII character encoding issues.

Added driver property useHostsInPrivileges. Defaults to true. Affects whether or not @hostname will be used in DBMD.getColumn/TablePrivileges.

All DBMD result set columns describing schemas now return NULL to be more compliant with the behavior of other JDBC drivers for other database systems (MySQL does not support schemas).

Added SSL support. See README for information on how to use it.

Properly restore connection properties when autoReconnecting or failing-over, including autoCommit state, and isolation level.

Use SHOW CREATE TABLE when possible for determining foreign key information for DatabaseMetaData. Also allows cascade options for DELETE information to be returned.

Escape 0x5c character in strings for the SJIS charset.

Fixed start position off-by-1 error in Clob.getSubString().

Implemented Clob.truncate().

Implemented Clob.setString().

Implemented Clob.setAsciiStream().

Implemented Clob.setCharacterStream().

Added com.mysql.jdbc.MiniAdmin class, which allows you to send shutdown command to MySQL server. This is intended to be used when „embedding“ Java and MySQL server together in an end-user application.

Added connectTimeout parameter that allows users of JDK-1.4 and newer to specify a maxium time to wait to establish a connection.

Failover and autoReconnect work only when the connection is in an autoCommit(false) state, in order to stay transaction-safe.

Added queriesBeforeRetryMaster property that specifies how many queries to issue when failed over before attempting to reconnect to the master (defaults to 50).

Fixed DBMD.supportsResultSetConcurrency() so that it returns true for ResultSet.TYPE_SCROLL_INSENSITIVE and ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE.

Fixed ResultSet.isLast() for empty result sets (should return false).

PreparedStatement now honors stream lengths in setBinary/Ascii/Character Stream() unless you set the connection property useStreamLengthsInPrepStmts to false.

Removed some not-needed temporary object creation by smarter use of Strings in EscapeProcessor, Connection and DatabaseMetaData classes.

Fixed ResultSet.getRow() off-by-one bug.

Fixed RowDataStatic.getAt() off-by-one bug.

Added limited Clob functionality (ResultSet.getClob(), PreparedStatemtent.setClob(), PreparedStatement.setObject(Clob).

Added socketTimeout parameter to URL.

Connection.isClosed() no longer „pings“ the server.

Connection.close() issues rollback() when getAutoCommit() is false.

Added paranoid parameter, which sanitizes error messages by removing „sensitive“ information from them (such as hostnames, ports, or usernames), as well as clearing „sensitive“ data structures when possible.

Fixed ResultSetMetaData.isSigned() for TINYINT and BIGINT.

Charsets now automatically detected. Optimized code for single-byte character set conversion.

Implemented ResultSet.getCharacterStream().

Added LOCAL TEMPORARY to table types in DatabaseMetaData.getTableTypes().

Massive code clean-up to follow Java coding conventions (the time had come).

!!! LICENSE CHANGE !!! The driver is now GPL. If you need non-GPL licenses, please contact me <mark@mysql.com>.

JDBC-3.0 functionality including Statement/PreparedStatement.getGeneratedKeys() and ResultSet.getURL().

Performance enchancements: Driver is now 50–100% faster in most situations, and creates fewer temporary objects.

Repackaging: New driver name is com.mysql.jdbc.Driver, old name still works, though (the driver is now provided by MySQL-AB).

Better checking for closed connections in Statement and PreparedStatement.

Support for streaming (row-by-row) result sets (see README) Thanks to Doron.

Support for large packets (new addition to MySQL-4.0 protocol), see README for more information.

JDBC Compliance: Passes all tests besides stored procedure tests.

Fix and sort primary key names in DBMetaData (SF bugs 582086 and 582086).

Float types now reported as java.sql.Types.FLOAT (SF bug 579573).

ResultSet.getTimestamp() now works for DATE types (SF bug 559134).

ResultSet.getDate/Time/Timestamp now recognizes all forms of invalid values that have been set to all zeros by MySQL (SF bug 586058).

Testsuite now uses Junit (which you can get from http://www.junit.org.

The driver now only works with JDK-1.2 or newer.

Added multi-host failover support (see README).

General source-code cleanup.

Overall speed improvements via controlling transient object creation in MysqlIO class when reading packets.

Performance improvements in string handling and field metadata creation (lazily instantiated) contributed by Alex Twisleton-Wykeham-Fiennes.

More code cleanup.

PreparedStatement now releases resources on .close(). (SF bug 553268)

Quoted identifiers not used if server version does not support them. Also, if server started with --ansi or --sql-mode=ANSI_QUOTES, ‘"’ will be used as an identifier quote character, otherwise ‘'’ will be used.

ResultSet.getDouble() now uses code built into JDK to be more precise (but slower).

LogicalHandle.isClosed() calls through to physical connection.

Added SQL profiling (to STDERR). Set profileSql=true in your JDBC URL. See README for more information.

Fixed typo for relaxAutoCommit parameter.

More code cleanup.

Fixed unicode chars being read incorrectly. (SF bug 541088)

Faster blob escaping for PrepStmt.

Added set/getPortNumber() to DataSource(s). (SF bug 548167)

Added setURL() to MySQLXADataSource. (SF bug 546019)

PreparedStatement.toString() fixed. (SF bug 534026)

ResultSetMetaData.getColumnClassName() now implemented.

Rudimentary version of Statement.getGeneratedKeys() from JDBC-3.0 now implemented (you need to be using JDK-1.4 for this to work, I believe).

DBMetaData.getIndexInfo() - bad PAGES fixed. (SF BUG 542201)

General code cleanup.

Added getIdleFor() method to Connection and MysqlLogicalHandle.

Relaxed synchronization in all classes, should fix 520615 and 520393.

Added getTable/ColumnPrivileges() to DBMD (fixes 484502).

Added new types to getTypeInfo(), fixed existing types thanks to Al Davis and Kid Kalanon.

Added support for BIT types (51870) to PreparedStatement.

Fixed getRow() bug (527165) in ResultSet.

Fixes for ResultSet updatability in PreparedStatement.

Fixed time zone off-by-1-hour bug in PreparedStatement (538286, 528785).

ResultSet: Fixed updatability (values being set to null if not updated).

DataSources - fixed setUrl bug (511614, 525565), wrong datasource class name (532816, 528767).

Added identifier quoting to all DatabaseMetaData methods that need them (should fix 518108).

Added support for YEAR type (533556).

ResultSet.insertRow() should now detect auto_increment fields in most cases and use that value in the new row. This detection will not work in multi-valued keys, however, due to the fact that the MySQL protocol does not return this information.

ResultSet.refreshRow() implemented.

Fixed testsuite.Traversal afterLast() bug, thanks to Igor Lastric.

Fixed missing DELETE_RULE value in DBMD.getImported/ExportedKeys() and getCrossReference().

Full synchronization of Statement.java.

More changes to fix Unexpected end of input stream errors when reading BLOB values. This should be the last fix.

Fixed spurious Unexpected end of input stream errors in MysqlIO (bug 507456).

Fixed null-pointer-exceptions when using MysqlConnectionPoolDataSource with Websphere 4 (bug 505839).

Ant build was corrupting included jar files, fixed (bug 487669).

Fixed extra memory allocation in MysqlIO.readPacket() (bug 488663).

Implementation of DatabaseMetaData.getExported/ImportedKeys() and getCrossReference().

Full synchronization on methods modifying instance and class-shared references, driver should be entirely thread-safe now (please let me know if you have problems).

DataSource implementations moved to org.gjt.mm.mysql.jdbc2.optional package, and (initial) implementations of PooledConnectionDataSource and XADataSource are in place (thanks to Todd Wolff for the implementation and testing of PooledConnectionDataSource with IBM WebSphere 4).

Added detection of network connection being closed when reading packets (thanks to Todd Lizambri).

Fixed quoting error with escape processor (bug 486265).

Report batch update support through DatabaseMetaData (bug 495101).

Fixed off-by-one-hour error in PreparedStatement.setTimestamp() (bug 491577).

Removed concatenation support from driver (the || operator), as older versions of VisualAge seem to be the only thing that use it, and it conflicts with the logical || operator. You will need to start mysqld with the --ansi flag to use the || operator as concatenation (bug 491680).

Fixed casting bug in PreparedStatement (bug 488663).

Batch updates now supported (thanks to some inspiration from Daniel Rall).

XADataSource/ConnectionPoolDataSource code (experimental)

PreparedStatement.setAnyNumericType() now handles positive exponents correctly (adds + so MySQL can understand it).

DatabaseMetaData.getPrimaryKeys() and getBestRowIdentifier() are now more robust in identifying primary keys (matches regardless of case or abbreviation/full spelling of Primary Key in Key_type column).

PreparedStatement.setCharacterStream() now implemented

Fixed dangling socket problem when in high availability (autoReconnect=true) mode, and finalizer for Connection will close any dangling sockets on GC.

Fixed ResultSetMetaData.getPrecision() returning one less than actual on newer versions of MySQL.

ResultSet.getBlob() now returns null if column value was null.

Character sets read from database if useUnicode=true and characterEncoding is not set. (thanks to Dmitry Vereshchagin)

Initial transaction isolation level read from database (if avaialable). (thanks to Dmitry Vereshchagin)

Fixed DatabaseMetaData.supportsTransactions(), and supportsTransactionIsolationLevel() and getTypeInfo() SQL_DATETIME_SUB and SQL_DATA_TYPE fields not being readable.

Fixed PreparedStatement generating SQL that would end up with syntax errors for some queries.

Fixed ResultSet.isAfterLast() always returning false.

Fixed time zone issue in PreparedStatement.setTimestamp(). (thanks to Erik Olofsson)

Captialize type names when captializeTypeNames=true is passed in URL or properties (for WebObjects. (thanks to Anjo Krank)

Updatable result sets now correctly handle NULL values in fields.

PreparedStatement.setDouble() now uses full-precision doubles (reverting a fix made earlier to truncate them).

PreparedStatement.setBoolean() will use 1/0 for values if your MySQL version is 3.21.23 or higher.

Fixed PreparedStatement parameter checking.

Fixed case-sensitive column names in ResultSet.java.

Fixed ResultSet.getBlob() ArrayIndex out-of-bounds.

Fixed ResultSetMetaData.getColumnTypeName for TEXT/BLOB.

Fixed ArrayIndexOutOfBounds when sending large BLOB queries. (Max size packet was not being set)

Added ISOLATION level support to Connection.setIsolationLevel()

Fixed NPE on PreparedStatement.executeUpdate() when all columns have not been set.

Fixed data parsing of TIMESTAMP values with 2-digit years.

Added Byte to PreparedStatement.setObject().

ResultSet.getBoolean() now recognizes -1 as true.

ResultSet has +/-Inf/inf support.

ResultSet.insertRow() works now, even if not all columns are set (they will be set to NULL).

DataBaseMetaData.getCrossReference() no longer ArrayIndexOOB.

getObject() on ResultSet correctly does TINYINT->Byte and SMALLINT->Short.

Implemented getBigDecimal() without scale component for JDBC2.

Fixed composite key problem with updatable result sets.

Added detection of -/+INF for doubles.

Faster ASCII string operations.

Fixed incorrect detection of MAX_ALLOWED_PACKET, so sending large blobs should work now.

Fixed off-by-one error in java.sql.Blob implementation code.

Added ultraDevHack URL parameter, set to true to allow (broken) Macromedia UltraDev to use the driver.

Fixed RSMD.isWritable() returning wrong value. Thanks to Moritz Maass.

Cleaned up exception handling when driver connects.

Columns that are of type TEXT now return as Strings when you use getObject().

DatabaseMetaData.getPrimaryKeys() now works correctly with respect to key_seq. Thanks to Brian Slesinsky.

No escape processing is done on PreparedStatements anymore per JDBC spec.

Fixed many JDBC-2.0 traversal, positioning bugs, especially with respect to empty result sets. Thanks to Ron Smits, Nick Brook, Cessar Garcia and Carlos Martinez.

Fixed some issues with updatability support in ResultSet when using multiple primary keys.

Fixed Bad Handshake problem.

Fixes to ResultSet for insertRow() - Thanks to Cesar Garcia

Fix to Driver to recognize JDBC-2.0 by loading a JDBC-2.0 class, instead of relying on JDK version numbers. Thanks to John Baker.

Fixed ResultSet to return correct row numbers

Statement.getUpdateCount() now returns rows matched, instead of rows actually updated, which is more SQL-92 like.

Statement/PreparedStatement.getMoreResults() bug fixed. Thanks to Noel J. Bergman.

Added Short as a type to PreparedStatement.setObject(). Thanks to Jeff Crowder

Driver now automagically configures maximum/preferred packet sizes by querying server.

Autoreconnect code uses fast ping command if server supports it.

Fixed various bugs with respect to packet sizing when reading from the server and when alloc'ing to write to the server.

Now compiles under JDK-1.2. The driver supports both JDK-1.1 and JDK-1.2 at the same time through a core set of classes. The driver will load the appropriate interface classes at runtime by figuring out which JVM version you are using.

Fixes for result sets with all nulls in the first row. (Pointed out by Tim Endres)

Fixes to column numbers in SQLExceptions in ResultSet (Thanks to Blas Rodriguez Somoza)

The database no longer needs to specified to connect. (Thanks to Christian Motschke)

Better Documentation (in progress), in doc/mm.doc/book1.html

DBMD now allows null for a column name pattern (not in spec), which it changes to '%'.

DBMD now has correct types/lengths for getXXX().

ResultSet.getDate(), getTime(), and getTimestamp() fixes. (contributed by Alan Wilken)

EscapeProcessor now handles \{ \} and { or } inside quotes correctly. (thanks to Alik for some ideas on how to fix it)

Fixes to properties handling in Connection. (contributed by Juho Tikkala)

ResultSet.getObject() now returns null for NULL columns in the table, rather than bombing out. (thanks to Ben Grosman)

ResultSet.getObject() now returns Strings for types from MySQL that it doesn't know about. (Suggested by Chris Perdue)

Removed DataInput/Output streams, not needed, 1/2 number of method calls per IO operation.

Use default character encoding if one is not specified. This is a work-around for broken JVMs, because according to spec, EVERY JVM must support "ISO8859_1", but they don't.

Fixed Connection to use the platform character encoding instead of "ISO8859_1" if one isn't explicitly set. This fixes problems people were having loading the character- converter classes that didn't always exist (JVM bug). (thanks to Fritz Elfert for pointing out this problem)

Changed MysqlIO to re-use packets where possible to reduce memory usage.

Fixed escape-processor bugs pertaining to {} inside quotes.

Fixed character-set support for non-Javasoft JVMs (thanks to many people for pointing it out)

Fixed ResultSet.getBoolean() to recognize 'y' & 'n' as well as '1' & '0' as boolean flags. (thanks to Tim Pizey)

Fixed ResultSet.getTimestamp() to give better performance. (thanks to Richard Swift)

Fixed getByte() for numeric types. (thanks to Ray Bellis)

Fixed DatabaseMetaData.getTypeInfo() for DATE type. (thanks to Paul Johnston)

Fixed EscapeProcessor for "fn" calls. (thanks to Piyush Shah at locomotive.org)

Fixed EscapeProcessor to not do extraneous work if there are no escape codes. (thanks to Ryan Gustafson)

Fixed Driver to parse URLs of the form "jdbc:mysql://host:port" (thanks to Richard Lobb)

Fixed Timestamps for PreparedStatements

Fixed null pointer exceptions in RSMD and RS

Re-compiled with jikes for valid class files (thanks ms!)

Fixed escape processor to deal with unmatched { and } (thanks to Craig Coles)

Fixed escape processor to create more portable (between DATETIME and TIMESTAMP types) representations so that it will work with BETWEEN clauses. (thanks to Craig Longman)

MysqlIO.quit() now closes the socket connection. Before, after many failed connections some OS's would run out of file descriptors. (thanks to Michael Brinkman)

Fixed NullPointerException in Driver.getPropertyInfo. (thanks to Dave Potts)

Fixes to MysqlDefs to allow all *text fields to be retrieved as Strings. (thanks to Chris at Leverage)

Fixed setDouble in PreparedStatement for large numbers to avoid sending scientific notation to the database. (thanks to J.S. Ferguson)

Fixed getScale() and getPrecision() in RSMD. (contrib'd by James Klicman)

Fixed getObject() when field was DECIMAL or NUMERIC (thanks to Bert Hobbs)

DBMD.getTables() bombed when passed a null table-name pattern. Fixed. (thanks to Richard Lobb)

Added check for "client not authorized" errors during connect. (thanks to Hannes Wallnoefer)

Result set rows are now byte arrays. Blobs and Unicode work bidriectonally now. The useUnicode and encoding options are implemented now.

Fixes to PreparedStatement to send binary set by setXXXStream to be sent untouched to the MySQL server.

Fixes to getDriverPropertyInfo().

Changed all ResultSet fields to Strings, this should allow Unicode to work, but your JVM must be able to convert between the character sets. This should also make reading data from the server be a bit quicker, because there is now no conversion from StringBuffer to String.

Changed PreparedStatement.streamToString() to be more efficient (code from Uwe Schaefer).

URL parsing is more robust (throws SQL exceptions on errors rather than NullPointerExceptions)

PreparedStatement now can convert Strings to Time/Date values via setObject() (code from Robert Currey).

IO no longer hangs in Buffer.readInt(), that bug was introduced in 1.1d when changing to all byte-arrays for result sets. (Pointed out by Samo Login)

Fixes to DatabaseMetaData to allow both IBM VA and J-Builder to work. Let me know how it goes. (thanks to Jac Kersing)

Fix to ResultSet.getBoolean() for NULL strings (thanks to Barry Lagerweij)

Beginning of code cleanup, and formatting. Getting ready to branch this off to a parallel JDBC-2.0 source tree.

Added "final" modifier to critical sections in MysqlIO and Buffer to allow compiler to inline methods for speed.

If object references passed to setXXX() in PreparedStatement are null, setNull() is automatically called for you. (Thanks for the suggestion goes to Erik Ostrom)

setObject() in PreparedStatement will now attempt to write a serialized representation of the object to the database for objects of Types.OTHER and objects of unknown type.

Util now has a static method readObject() which given a ResultSet and a column index will re-instantiate an object serialized in the above manner.

Got rid of "ugly hack" in MysqlIO.nextRow(). Rather than catch an exception, Buffer.isLastDataPacket() was fixed.

Connection.getCatalog() and Connection.setCatalog() should work now.

Statement.setMaxRows() works, as well as setting by property maxRows. Statement.setMaxRows() overrides maxRows set via properties or url parameters.

Automatic re-connection is available. Because it has to "ping" the database before each query, it is turned off by default. To use it, pass in "autoReconnect=true" in the connection URL. You may also change the number of reconnect tries, and the initial timeout value via "maxReconnects=n" (default 3) and "initialTimeout=n" (seconds, default 2) parameters. The timeout is an exponential backoff type of timeout; for example, if you have initial timeout of 2 seconds, and maxReconnects of 3, then the driver will timeout 2 seconds, 4 seconds, then 16 seconds between each re-connection attempt.

Fixed handling of blob data in Buffer.java

Fixed bug with authentication packet being sized too small.

The JDBC Driver is now under the LPGL

Fixed Buffer.readLenString() to correctly read data for BLOBS.

Fixed PreparedStatement.stringToStream to correctly read data for BLOBS.

Fixed PreparedStatement.setDate() to not add a day. (above fixes thanks to Vincent Partington)

Added URL parameter parsing (?user=... and so forth).

Big news! New package name. Tim Endres from ICE Engineering is starting a new source tree for GNU GPL'd Java software. He's graciously given me the org.gjt.mm package directory to use, so now the driver is in the org.gjt.mm.mysql package scheme. I'm "legal" now. Look for more information on Tim's project soon.

Now using dynamically sized packets to reduce memory usage when sending commands to the DB.

Small fixes to getTypeInfo() for parameters, and so forth.

DatabaseMetaData is now fully implemented. Let me know if these drivers work with the various IDEs out there. I've heard that they're working with JBuilder right now.

Added JavaDoc documentation to the package.

Package now available in .zip or .tar.gz.

Implemented getTypeInfo(). Connection.rollback() now throws an SQLException per the JDBC spec.

Added PreparedStatement that supports all JDBC API methods for PreparedStatement including InputStreams. Please check this out and let me know if anything is broken.

Fixed a bug in ResultSet that would break some queries that only returned 1 row.

Fixed bugs in DatabaseMetaData.getTables(), DatabaseMetaData.getColumns() and DatabaseMetaData.getCatalogs().

Added functionality to Statement that allows executeUpdate() to store values for IDs that are automatically generated for AUTO_INCREMENT fields. Basically, after an executeUpdate(), look at the SQLWarnings for warnings like "LAST_INSERTED_ID = 'some number', COMMAND = 'your SQL query'". If you are using AUTO_INCREMENT fields in your tables and are executing a lot of executeUpdate()s on one Statement, be sure to clearWarnings() every so often to save memory.

Split MysqlIO and Buffer to separate classes. Some ClassLoaders gave an IllegalAccess error for some fields in those two classes. Now mm.mysql works in applets and all classloaders. Thanks to Joe Ennis <jce@mail.boone.com> for pointing out the problem and working on a fix with me.

Fixed DatabaseMetadata problems in getColumns() and bug in switch statement in the Field constructor. Thanks to Costin Manolache <costin@tdiinc.com> for pointing these out.

Incorporated efficiency changes from Richard Swift <Richard.Swift@kanatek.ca> in MysqlIO.java and ResultSet.java:

We're now 15% faster than gwe's driver.

Started working on DatabaseMetaData.

The following methods are implemented: