select cars.*,member.id from ( (select * from phpcars_cars where fidex=1 order by listorder limit 3 ) #固定广告位union (select * from phpcars_cars where top>1 order by top limit 5 ) #刷新广告位union (select * from phpcars_cars where top=1 order by p_addtime desc )) as cars LEFT JOIN phpcars_member AS member ON member.id = cars.uid #正常位置
3和5都是都是变量,后台定义的,求优化。
固定广告位 是用来 固定几个位置的。
刷新广告位是用来不断给用户刷新的。
回复讨论(解决方案)
数据量比较少,暂时没发现问题。。。。
来个人接分。
你的 limit 子句能正常表现吗?
没有发现什么问题。
你的 limit 子句能正常表现吗?
可以。

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