[摘要]+-------+------------+----------------------------------+----------+--------------+-----------+1 ro...
+-------+------------+----------------------------------+----------+--------------+-----------+1 row in set (0.25 sec)mysql> explain select * from user order by rand() limit 1;
+----+-------------+-------+------+---------------+------+---------+------+--------+---------------------------------+ |
关键词： mysql order by rand() 效率优化办法