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From:Kent Boortz Date:February 14 2006 1:49am
Subject:MySQL 5.1.6-alpha has been released
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MySQL 5.1.6-alpha, a new version of the popular Open Source Database
Management System, has been released. The Community Edition is now
available in source and binary form for a number of platforms from our
download pages at

and mirror sites.

Note that not all mirror sites may be up to date at this point in
time - if you can't find this version on some mirror, please try
again later or choose another download site.

This is a new alpha development release, adding new features and
fixing recently discovered bugs.

NOTE: This Alpha release, as any other pre-production release, should
not be installed on ``production'' level systems or systems with
critical data.

Please refer to our bug database at for more
details about the individual bugs fixed in this version.

We welcome and appreciate your feedback!

News from the ChangeLog:

  Functionality added or changed:

    * Packaging changes: MySQL 5.1.6 introduces some changes to
      distribution packaging:
         + Distributions include both a mysqld optimized server and
           mysqld-debug debugging server. There is no separate debug
         + There is no longer a mysqld-max server.
         + Server binaries are no longer stripped, except for RPM
         + Binary distributions for Unix and Unix-like systems no
           longer include safe_mysqld as a link to mysqld_safe.
           safe_mysqld has been deprecated since MySQL 4.0 and is
           now removed.

    * Events: MySQL 5.1.6 introduces the Events Scheduler, which
      allows one to schedule SQL statements for execution at
      predetermined times. Events can be transient (one-time-only) or
      recurrent at regular intervals, and may execute queries and
      statements permitted in stored routines, including compound
         + The CREATE EVENT statement creates events.
           Users must have the EVENT privilege to create events.
         + Events can be altered after creation (with ALTER
           EVENT) and dropped when no longer needed (with DROP EVENT).
         + For more information, see

    * 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. After upgrading, be sure to
      update your grant tables as described in Section 5.5,
      "mysql_fix_privilege_tables --- Upgrade MySQL System Tables."
      This process will assign the TRIGGER privilege to all accounts
      that had the SUPER privilege. (After updating, you might also
      consider whether any of those accounts no longer need SUPER.)
      If you fail to update the grant tables, triggers may 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 a SELECT 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 (

    * Partition pruning. A new optimization now ensures searches of
      partitioned tables use only those partitions relevant to the
      search. The optimization also affects INSERT and UPDATE
      operations on partitioned tables, making those operations
      faster on partitioned table than in earlier versions of MySQL.

    * Replication between MySQL Clusters is now supported. It is now
      also possible to replicate between a MySQL Cluster and a non-
      cluster database. See Section 16.7, "MySQL Cluster Replication."

    * 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 (

    * Support for OPTIMIZE, CHECK, and REPAIR of partitioned
      tables has been added.

    * The slow query and general logs can now be queried in
      table form, using the CSV engine; that is, it's now
      possible to SELECT FROM mysql.slow_log and SELECT
      FROM mysql.general_log.

    * Added the --log-output option for controlling whether log
      files or log tables are used.

    * Added the character_set_filesystem system variable.

    * Added the event_scheduler system variable.

    * Added the ndb_extra_logging system variable.

    * Added the FILES table to INFORMATION_SCHEMA.

    * Added the EVENTS table to INFORMATION_SCHEMA.


    * The ARCHIVE storage engine supports the AUTO_INCREMENT column
      attribute and the AUTO_INCREMENT table option. Section 14.8,
      "The ARCHIVE Storage 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 (

    * Significant optimizations of partition management has been
      performed for non-NDB partitioned tables. This relates to ALTER
         + Now adding a new partition to RANGE/LIST partitioned can
           be done without touching other partitions and the same
           with DROP PARTITION and REORGANIZE will only reorganize
           those partitions necessary to reorganize.

    * The ALTER TABLE REORGANIZE PARTITION has been changed,
      previously the syntax used the keyword REORGANISE.

    *  A number of new partition commands have been added:

  Bugs fixed:

    * STR_TO_DATE(1,NULL) caused a server crash.
      (Bug#15828 (

    * An INSERT statement in a stored procedure corrupted the binary
      (Bug#16621 (

    * 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 (

      TABLE statement involving partitions did not work.
      (Bug#14354 (

    * Subquery 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 Section
      17.4, "Restrictions and Limitations on Partitioning").
      (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 partitioned 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 (


Kent Boortz, Senior Software Developer
Office: +46 18 174400 ext. 4450 (VoIP)
Office: +46 19 182931
Mobile: +46 70 2791171
MySQL 5.1.6-alpha has been releasedKent Boortz14 Feb