LINQ版本的TOP PERCENT [英] LINQ version of TOP PERCENT

问题描述

有没有一种方法可以使用百分比执行顶级(Take)linq查询? T-SQL应该是:

Is there a way to perform a top (Take) linq query using percentage? The T-SQL would have been:

SELECT TOP 20 PERCENT ...

但是LINQ似乎只想要一个整数.

But LINQ seems to only want an int.

看来我必须先数一数然后再取个数.有什么建议吗?

It seems that I would have to do a count and then a take. Any suggestions?

推荐答案

从本质上讲，您将不得不执行两次查询.您将必须执行一次以获取计数，然后再次计算出百分比(因为您将传递与等于20％的计数相对应的数字).

You would have to perform the query twice, in essence. You would have to perform it once to get a count, and then again to figure out the percentage (because you will pass the number that corresponds to the count that will equal 20%).

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