Question

我在MS SQL SERVER中遇到变量定义问题。你能给我一些提示吗，如何将count函数的结果赋给变量@WorkingDays？

DECLARE @StartDate DATE = '2017-03-29';
DECLARE @EndDate DATE = '2017-05-05';
DECLARE @WorkingDays INT;

    WITH DateRange(DateData) AS 
    (
        SELECT @StartDate as Date
        UNION ALL
        SELECT DATEADD(d,1,DateData)
        FROM DateRange 
        WHERE DateData < @EndDate
    )
    SELECT COUNT(DateData)
    FROM DateRange
    WHERE DATEPART(dw, DateData) not in (1, 7)
    OPTION (MAXRECURSION 0)

我试图使用

set @WorkingDays = (WITH.... OPTION (MAXRECURSION 0) )

但它返回错误（语法不正确）

我会感激任何提示

祝你好运

Answer 1

SELECT @WorkingDays = COUNT(DateData) ...

Answer 2

你可以遵循这个方法：

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如何从WITH ... SELECT语句声明变量

2 个答案: