union all效率低下，该用存储过程、视图、临时表哪种方法来解决？该如何解决 -PHP Tutorial-php.cn

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union all效率低下，该用存储过程、视图、临时表哪种方法来解决？该如何解决

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Jun 13, 2016 pm 12:49 PM

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union all效率低下，该用存储过程、视图、临时表哪种方法来解决？
union all效率低下，大概union all数十张表，单表select仅需0.0003-0.002秒，但union all后需要0.6秒左右
想改善下效率

这种情况该用存储过程、视图、临时表哪种方法来解决？

------解决方案--------------------
数据量有多大啊？要达到分表的情况下了。分表的话，这种水平分也不合理吧。
------解决方案--------------------
union all 之后还做了order之类? 要不不该差这么大啊

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