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).