オリジナル版：http://dev.mysql.com/doc/refman/5.1/en/news-5-1-34.html
最も普及しているオープンソースデータベース管理システムの新バージョンであるMySQL Community Server 5.1.34がリリースされました。MySQL 5.1.34は、プロダクションシステムでの使用をお勧めします。
MySQL 5.1.34は、AIX 5.2向けのMySQL 5.1としての最終リリースとなります。AIX 5.2向けのEOL（End of Life) を2009年4月30日に迎える予定です。詳細情報は、以下をご覧ください。
http://www.mysql.com/support/eol-notice.html
MySQL 5.1の新機能の概要については、以下を参照してください。
http://dev.mysql.com/doc/refman/5.1/en/mysql-nutshell.html
新たなサーバにMySQL 5.1.34をインストール、または以前のMySQLリリースからMySQL 5.1.34にアップグレードする際の情報については、以下を参照してください。
http://dev.mysql.com/doc/refman/5.1/en/installing.html
MySQL 5.1.34は、http://dev.mysql.com/downloads/から、ソースコード及び多くのプラットフォームのためのバイナリで現在利用可能です。
すべてのミラーサイトが現在、最新であるとは限らないことに注意してください。
あるミラーサイトで本バージョンを見つけることができない場合は、再度確認を行うか、あるいは別のダウンロード・サイトを選択してください。
バグレポート、バグ修正、パッチ等の情報をお待ちしておりますので、以下のページをご利用ください。
http://forge.mysql.com/wiki/Contributing
MySQL 5.1に関するオープンな問題の情報については、以下のエラッタリストを参照してください。
http://dev.mysql.com/doc/refman/5.1/en/open-bugs.html
以下のセクションはMySQL5.1の以前のリリース以来のMySQLソースコードにおけるバージョン間の変更を記載しています。
http://dev.mysql.com/doc/refman/5.1/en/news-5-1-34.html
以下は、追加または変更された機能です。
=======================================================================
Functionality added or changed:
* Optimizer: The @@optimizer_switch setting was backported from
MySQL 6.0, with additional switches to turn on/off use of
index_merge optimizations or a particular index_merge algorithm.
For more information please seehttp://s.petrunia.net/blog/?p=52
Bugs fixed:
* Replication: Important Note: Binary logging with
--binlog_format=ROW failed when a change to be logged included
more than 251 columns. This issue was not known to occur with
mixed-format or statement-based logging.
(Bug#42977:http://bugs.mysql.com/42977)
See alsoBug#42914:http://bugs.mysql.com/42914.
* Replication: Assigning an invalid directory for the
--slave-load-tmpdir caused the replication slave to crash.
(Bug#42861:http://bugs.mysql.com/42861)
* Replication: The mysql.procs_priv system table was not
replicated. (Bug#42217:http://bugs.mysql.com/42217)
* Replication: An INSERT DELAYED into a TIMESTAMP column issued
concurrently with a an insert on the same column not using
DELAYED, but applied after the other insert, was logged using
the same timestamp as generated by the other (non-DELAYED)
insert. (Bug#41719:http://bugs.mysql.com/41719)
* Replication: The MIXED binary logging format did not switch to
row-based mode for statements containing the LOAD_FILE()
function. (Bug#39701:http://bugs.mysql.com/39701)
* Replication: When the server SQL mode included IGNORE_SPACE,
statement-based replication of LOAD DATA INFILE ... INTO
tbl_name failed because the statement was read incorrectly
from the binary log; a trailing space was omitted, causing the
statement to fail with a syntax error when run on the slave.
(Bug#22504:http://bugs.mysql.com/22504)
See alsoBug#43746:http://bugs.mysql.com/43746.
* An attempt by a user who did not have the SUPER privilege to
kill a system thread could cause a server crash.
(Bug#43748:http://bugs.mysql.com/43748)
* On Windows, incorrectly specified link dependencies in
CMakeLists.txt resulted in link errors for mysql_embedded,
mysqltest_embedded, and mysql_client_test_embedded.
(Bug#43715:http://bugs.mysql.com/43715)
* mysql crashed if a request for the current database name
returned an empty result, such as after the client has
executed a preceding SET sql_select_limit=0 statement.
(Bug#43254:http://bugs.mysql.com/43254)
* If the value of the version_comment system variable was too
long, the mysql client displayed a truncated startup message.
(Bug#43153:http://bugs.mysql.com/43153)
* Queries of the following form returned an empty result: SELECT
... WHERE ... (col=col AND col=col) OR ... (false expression)
(Bug#42957:http://bugs.mysql.com/42957)
* The strings/CHARSET_INFO.txt file was not included in source
distributions. (Bug#42937:http://bugs.mysql.com/42937)
* A dangling pointer in mysys/my_error.c could lead to client
crashes. (Bug#42675:http://bugs.mysql.com/42675)
* Passing an unknown time zone specification to CONVERT_TZ()
resulted in a memory leak.
(Bug#42502:http://bugs.mysql.com/42502)
* With more than two arguments, LEAST(), GREATEST(), and CASE
could unnecessarily return Illegal mix of collations errors.
(Bug#41627:http://bugs.mysql.com/41627)
* The mysql client could misinterpret its input if a line was
longer than an internal buffer.
(Bug#41486:http://bugs.mysql.com/41486)
* In the help command output displayed by mysql, the description
for the \c (clear) command was misleading.
(Bug#41268:http://bugs.mysql.com/41268)
* The load_defaults(), my_search_option_files() and
my_print_default_files() functions in the C client library
were subject to a race condition in multi-threaded operation.
(Bug#40552:http://bugs.mysql.com/40552)
* If --basedir was specified, mysqld_safe did not use it when
attempting to locate my_print_defaults.
(Bug#39326:http://bugs.mysql.com/39326)
* When MySQL was configured with the --with-max-indexes=128
option, mysqld crashed.
(Bug#36751:http://bugs.mysql.com/36751)
* Setting the join_buffer_size variable to its minimum value
produced spurious warnings.
(Bug#36446:http://bugs.mysql.com/36446)
* The use of NAME_CONST() can result in a problem for CREATE
TABLE ... SELECT statements when the source column expressions
refer to local variables. Converting these references to
NAME_CONST() expressions can result in column names that are
different on the master and slave servers, or names that are
too long to be legal column identifiers. A workaround is to
supply aliases for columns that refer to local variables.
Now a warning is issued in such cases that indicate possible
problems. (Bug#35383:http://bugs.mysql.com/35383)
* An attempt to check or repair an ARCHIVE table that had been
subjected to a server crash returned a 144 internal error. The
data appeared to be irrecoverable.
(Bug#32880:http://bugs.mysql.com/32880)
* The Time column for SHOW PROCESSLIST output and the value of
the TIME column of the INFORMATION_SCHEMA.PROCESSLIST table
now can have negative values. Previously, the column was
unsigned and negative values were displayed incorrectly as
large positive values. Negative values can occur if a thread
alters the time into the future with SET TIMESTAMP = value or
the thread is executing on a slave and processing events from
a master that has its clock set ahead of the slave.
(Bug#22047:http://bugs.mysql.com/22047)
* Restoring a mysqldump dump file containing FEDERATED tables
because the file contained the data for the table. Now only
the table definition is dumped (because the data is located
elsewhere). (Bug#21360:http://bugs.mysql.com/21360)