[摘要]+-------+------------+----------------------------------+----------+--------------+-----------+1 ro...
+-------+------------+----------------------------------+----------+--------------+-----------+1 row in set (0.01 sec)mysql> explain select * from user limit 23541,1;
+----+-------------+-------+------+---------------+------+---------+------+--------+-------+ |
关键词： mysql order by rand() 效率优化办法