我要做一个表值值函数,该函数从给定数字表返回当日的日期和数字。
我已经有了一个函数, 您可以提供一个开始和结束日期, 以获取所有需要的日期( dbo. Dates (@ start, @ finish) ), 以及数字表, 其中含有每天我需要的数字 。
表格如下:
日(日期时间)
number int name varchar
我所需要的产出如下。
Date | Number ------------------ 20120501 | 1 20120501 | 2 20120501 | 3 20120502 | 1 20120502 | 2 20120502 | 3 20120503 | 1 ....
如果您需要所有天数的所有数字,请使用交叉连接 :
select d.date, n.number
from dbo.Dates(@start, @finish) cross join
Numbers n
然后,你只需要把“创建函数”的包装包包围绕这个包包就可以得到一个表值值的功能。
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