求1sql语句的写法

WBOY
Release: 2016-06-13 12:49:43
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求一sql语句的写法
我需要在留言表中查询最新的30条留言,然后这30条还要随机显示。


------解决方案--------------------
补充一下,就可以了
<br />
select * from (SELECT * FROM xxx order by xxx desc limit 30) t order by rand() limit 5<br />
Copy after login


引用:
SQL可以做到,只是真心不高效
SQL code?1select * from (SELECT * FROM xxx order by xxx desc limit 30) t order by rand()
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