Question

以下声明如何在内部工作？

DATEPART(WEEKDAY, CAL.DAY) in (1,7) then 0

我试过运行这个但是给了我错误，如果我删除了in子句那么它工作正常。

这是完整的代码：

SELECT CAL.DAY AS DATE
    ,FISCAL_PERIOD DATEPART(year, CAL.DAY)
    ,CASE 
        WHEN DATEPART(month, CAL.DAY) = 1
            AND DATEPART(day, CAL.DAY) = 1
            THEN 0
        WHEN DATEPART(month, CAL.DAY) = 1
            AND DATEPART(day, CAL.DAY) = 2
            AND DATEPART(WEEKDAY, CAL.DAY) IN (
                1
                ,7
                )
            THEN 0
        WHEN DATEPART(month, CAL.DAY) = 1
            AND DATEPART(day, CAL.DAY) = 3
            AND DATEPART(WEEKDAY, CAL.DAY) IN (
                1
                ,7
                )
            THEN 0
        ELSE NULL
        END AS BUSINESS_DAY_OVERRIDE
    ,
INTO #Demo
FROM CAL

Answer 1

DATEPART(WEEKDAY, ...)返回表示一周周期的整数1到7，将其与IN（1,7）进行比较没有错误

在达到该案例表达式之前存在语法问题。如果（例如）我假设在＆＃34之后有一个相等的符号; FISCAL_PERIOD =＆＃34;然后语法很好。（或者，也许相同的符号应该是逗号？）

SELECT cal.day AS [DATE], 
       FISCAL_PERIOD = Datepart(year, cal.day), 
       CASE 
         WHEN Datepart(month, cal.day) = 1 
              AND Datepart(day, cal.day) = 1 THEN 0 
         WHEN Datepart(month, cal.day) = 1 
              AND Datepart(day, cal.day) = 2 
              AND Datepart(weekday, cal.day) IN ( 1, 7 ) THEN 0 
         WHEN Datepart(month, cal.day) = 1 
              AND Datepart(day, cal.day) = 3 
              AND Datepart(weekday, cal.day) IN ( 1, 7 ) THEN 0 
         ELSE NULL 
       END     AS BUSINESS_DAY_OVERRIDE 
FROM   cal

小心使用＆＃34; date＆＃34;作为列名，它也是一个TSQL关键字。我个人不建议将其用作列名。

具有工作日的DatePart包含在子句中

1 个答案: