Hello.
Similar questions have been asked before. For example: http://lists.mysql.com/mysql/184088 Search in archives at: http://lists.mysql.com/mysql Michael Monashev <[EMAIL PROTECTED]> wrote: > Hello, > > How to select 5 random rows from big table with WHERE clause? > > This query very slow on 1 mln rows: > SELECT col1, col2 FROM table WHERE col3=123 ORDER BY RAND() LIMIT 5 > > Have you a faster one? > > Sincerely, > Michael, > http://xoib.com/ http://3d2f.com/ > http://qaix.com/ http://ryxi.com/ > http://gyxe.com/ http://gyxu.com/ > http://xywe.com/ http://xyqe.com/ > > > -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.NET http://www.ensita.net/ __ ___ ___ ____ __ / |/ /_ __/ __/ __ \/ / Gleb Paharenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET <___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
