mysql分页性能

Posted 2020-10-29 Claire_xu

 

 

- select * from userinfo limit 20000,10  # 数据越往后越慢

- 索引表中扫：

　select * from userinfo where id in (select id from userinfo limit 20000,10)  # 也慢

- select * from userinfo where id > 20000 limit 10  # 快，但需记录当前页记录的id