Mysql 5.5
Upgrading to MySQL 5.5 on Ubuntu 10.04 LTS
Ubuntu does not provide an apt-get repository package for MySQL 5.5 on this older OS, however this is still a widely used long term support version. The following steps will upgrade an existing MySQL 5.
Read moreThe most important MySQL Reference Manual page
In my opinion, The Server Option and Variable Reference at http://dev.mysql.com/doc/refman/5.5/en/mysqld-option-tables.html rates as my most important page. This is a consolidated index that enables a drill down to the Server Command Options, System Variables, Startup and replication specifics, as well as important information on default values and differences between versions including point releases.
Read moreLeveraging the InnoDB Plugin
Beginning with MySQL 5.1 as an additional plugin and included by default in MySQL 5.5 the InnoDB plugin includes many performance improvements. To leverage the support of new file formats however a very important setting is necessary.
Read moreInteresting MySQL 5.5 upgrade gotcha
Today I discovered an interesting upgrade problem with a client migrating from MySQL 5.0 to 5.5. The client who is undertaking the upgrade reported that MySQL 5.5 did not support the DECIMAL(18,5) data type.
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