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 項5.1.2. 「レプリケーション フォーマット」.

Plugins now can have status variables that are displayed in the output from SHOW STATUS. See 項25.2.5. 「Writing Plugins」.

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 項11.9. 「XML 関数」.

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)