mysql 隨機選取一條符合條件的記錄

暫時記錄下：

SELECT *  FROM `kw_user` AS t1 JOIN ( SELECT ROUND( RAND( ) * ( ( SELECT MAX( id ) FROM `kw_user` ) - ( SELECT MIN( id ) FROM `kw_user` ) ) + ( SELECT MIN( id ) FROM `kw_user` )  ) AS id  ) AS t2  WHERE t1.id >= t2.id  AND 加上刪選條件  ORDER BY t1.id  LIMIT 1;