MySQL 5.5.44 发布，此版本主要是 bug 修复：

• InnoDB; Partitioning：The CREATE_TIME column of the INFORMATION_SCHEMA.TABLES table now        shows the correct table creation time for partitioned InnoDB tables. The CREATE_TIME column of the        INFORMATION_SCHEMA.PARTITIONS table now shows the correct partition creation time for a partition of    partitioned InnoDB tables.

  The UPDATE_TIME column of the INFORMATION_SCHEMA.TABLES table now shows when a partitioned InnoDB table was last updated by an INSERT,  DELETE, or UPDATE. The        UPDATE_TIME column of the INFORMATION_SCHEMA.PARTITIONS table now shows when a partition of a partitioned InnoDB table was last updated. (Bug #69990, Bug #17299181)

• InnoDB: An assertion was raised on shutdown due to XA PREPARE transactions holding explicit locks.       (Bug #20816223)

• InnoDB: Removal of a foreign key object from the data dictionary cache during error handling caused the server to exit.  (Bug #20442523)

• InnoDB:  SHOW ENGINE INNODB STATUS output showed negative reservation and signal count values due to a counter overflow error. (Bug #20417397)

• InnoDB: Estimates that were too low for the size of merge chunks in the result sorting algorithm caused a server exit.  (Bug #20049521)

• SHOW VARIABLES mutexes were being locked twice, resulting in a server exit. (Bug #20788853)

• A Provides rule in RPM .spec files misspelled“mysql-embedded”as“mysql-emdedded”. (Bug #20734434)

• Under certain conditions, the libedit command-line library could write outside an array boundary and  cause a client program crash.  (Bug #20318154)

• Host value matching for the grant tables could fail to use the most specific of values that contained wildcard characters. (Bug #20181776)

• A user with a name of event_scheduler could view the Event Scheduler process list without the        PROCESS privilege. (Bug #20007583, Bug #20754369)

• SHOW GRANTS after connecting using a proxy user could display the password hash of the proxied user.       (Bug #19817663)

• For a prepared statement with an ORDER BY  that refers by column number to a GROUP_CONCAT() expression that has an outer reference, repeated statement execution could cause a server exit.       (Bug #19814337)

• Loading corrupt spatial data into a MyISAM table could cause the server to exit during index building.       (Bug #19573096)

• Certain queries for the INFORMATION_SCHEMA  TABLES and  COLUMNS tables could lead to excessive memory use when there were large numbers of empty InnoDB tables.  (Bug #72322, Bug #18592390)

• MySQL failed to compile using OpenSSL 0.9.8e.  (Bug #68999, Bug #16861371)

下载：http://dev.mysql.com/downloads/mysql/