Please refer http://dev.mysql.com/doc/refman/5.1/en/news-5-1-49.html
for full changes.
* InnoDB Plugin has been upgraded to version 1.0.10. This version is
considered of General Availability (GA) quality.
In this release, the InnoDB Plugin is included in source and binary
distributions, except RHEL3, RHEL4, SuSE 9 (x86, x86_64, ia64), and
generic Linux RPM packages. It also does not work for FreeBSD 6 and
HP-UX or for Linux on generic ia64.
Bugs fixed:
* Security Fix: After changing the values of the innodb_file_format or
innodb_file_per_table configuration parameters, DDL statements could
cause a server crash. (Bug#55039)
* Security Fix: Joins involving a table with with a unique SET column
could cause a server crash. (Bug#54575)
* Security Fix: Incorrect handling of NULL arguments could lead to a
crash for IN() or CASE operations when NULL arguments were either
passed explicitly as arguments (for IN()) or implicitly generated by
the WITH ROLLUP modifier (for IN() and CASE). (Bug#54477)
* Security Fix: A malformed argument to the BINLOG statement could
result in Valgrind warnings or a server crash. (Bug#54393)
* Security Fix: Use of TEMPORARY InnoDB tables with nullable columns
could cause a server crash. (Bug#54044)
* Security Fix: The server could crash if there were alternate reads
from two indexes on a table using the HANDLER interface. (Bug#54007)
* Security Fix: Using EXPLAIN with queries of the form SELECT
... UNION ... ORDER BY (SELECT ... WHERE ...) could cause a server
crash. (Bug#52711)
* Security Fix: LOAD DATA INFILE did not check for SQL errors and sent
an OK packet even when errors were already reported. Also, an assert
related to client-server protocol checking in debug servers
sometimes was raised when it should not have been. (Bug#52512)
embedded server (by PKG_OPTION).
For release MySQL 5.1 specific information please refer:
http://dev.mysql.com/doc/refman/5.1/en/mysql-nutshell.html
MySQL is a SQL (Structured Query Language) database server. SQL is the
most popular database language in the world. MySQL is a client-server
implementation that consists of a server daemon `mysqld' and many
different client programs/libraries.
The main goals of MySQL are speed and robustness.
The base upon which MySQL is built is a set of routines that have been
used in a highly demanding production environment for many years. While
MySQL is still in development it already offers a rich and highly useful
function set.
The official way to pronounce 'MySQL' is 'My Ess Que Ell' (Not MY-SEQUEL).
This package contains the MySQL server programs and libraries including
embedded server (by PKG_OPTION).
