look at http://www.xaprb.com/blog/2006/07/04/how-to-exploit-mysql-index-optimizations/
prior to MySQL 5.5, MYISAM is default engine. InnoDB becomes default from 5.5.
look at http://www.xaprb.com/blog/2006/07/04/how-to-exploit-mysql-index-optimizations/
prior to MySQL 5.5, MYISAM is default engine. InnoDB becomes default from 5.5.
