Re: MySQL question

From www.mysql.com You can't use a column with RAND() values in an ORDER BY clause, because ORDER BY would evaluate the column multiple times. In MySQL Version 3.23, you can, however, do: SELECT * FROM table_name ORDER BY RAND() This is useful to get a random sample of a set SELECT * FROM table1,table2 WHERE a=b AND c<d ORDER BY RAND() LIMIT 1000. Note that a RAND() in a WHERE clause will be re-evaluated every time the WHERE is executed. // ======== So if you have mysql version 3.23 you can do it directly in your query, if you don't have this version, I don't know, I would do it in php with LIMIT ?? hope it helps... py ----- Original Message ----- From: "Mitja Pagon" <mitja@hatchbit.com> To: <php-general@lists.php.net> Sent: Thursday, October 11, 2001 10:13 AM Subject: [PHP] MySQL question > Hello! > > What is the simplest most efficient way to get a random record from a MySQL > database? > > Thanks, > > Mitja Pagon > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net > For additional commands, e-mail: php-general-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net > >