Added -p# (remove #
            directories from path) to isamlog. All
            files are written with a relative path from the database
            directory Now mysqld shouldn't crash on
            shutdown when using the --log-isam option.
          
            New mysqlperl version. It is now
            compatible with msqlperl-0.63.
          
            New DBD module available.
          
            Added group function STD() (standard
            deviation).
          
            The mysqld server is now compiled by
            default without debugging information. This will make the
            daemon smaller and faster.
          
            Now one usually only has to specify the
            --basedir option to
            mysqld. All other paths are relative in a
            normal installation.
          
            BLOB columns sometimes contained garbage
            when used with a SELECT on more than one
            table and ORDER BY.
          
            Fixed that calculations that are not in GROUP
            BY work as expected (SQL-99 extension). Example:
mysql> SELECT id,id+1 FROM table GROUP BY id;
            The test of using MYSQL_PWD was reversed.
            Now MYSQL_PWD is enabled as default in
            the default release.
          
            Fixed conversion bug which caused mysqld
            to core dump with Arithmetic error on SPARC-386.
          
            Added --unbuffered option to
            mysql, for new
            mysqlaccess.
          
When using overlapping (unnecessary) keys and join over many tables, the optimizer could get confused and return 0 records.
This is a translation of the MySQL Reference Manual that can be found at dev.mysql.com. The original Reference Manual is in English, and this translation is not necessarily as up to date as the English version.

