tsql动态在哪里

时间:2012-05-21 14:23:04

标签: tsql

我正在努力解决这个问题。

如果是星期一到星期四,我想提前90天;

SELECT 
        PR.ClientID
        ,PR.NewDealEndDate
    INTO 
      #OriginalRenewalDetails
    FROM  
        Shiva.dbo.ProductRemortgage PR WITH (NOLOCK) 
        LEFT JOIN Shiva.dbo.ClientLead AS CL WITH (NOLOCK) 
        ON CONVERT(VARCHAR(50), CL.OriginatorReferenceID) = CONVERT(VARCHAR(50), PR.ClientID)
    WHERE -- 90 days from now. 
        PR.NewDealEndDate = DATEADD(dd, 90, DATEDIFF(dd, 00, GETDATE()))            
        AND CL.ClientID IS NULL

但是,如果是星期日,我希望在Where子句中更改以下内容。所以我也得到周五和周六的结果。

WHERE -- 90 days from now. 
    PR.NewDealEndDate BETWEEN DATEADD(dd, 88, DATEDIFF(dd, 00, GETDATE())) AND DATEADD(dd, 90, DATEDIFF(dd, 00, GETDATE()))
    AND CL.ClientID IS NULL

我找不到一种有效的方法。任何帮助表示赞赏。

4 个答案:

答案 0 :(得分:2)

使用IF

伪:

if day = sunday
begin
   select with 88
end
else 
begin
   select with 90
end

或者将WHERE子句更改为:

WHERE (PR.NewDealEndDate = DATEADD(dd, 90, DATEDIFF(dd, 00, GETDATE()))
       AND CL.ClientID IS NULL AND Datepart(weekday, getdate()) <> 1)
      OR
      (PR.NewDealEndDate BETWEEN DATEADD(dd, 88, DATEDIFF(dd, 00, GETDATE())) 
       AND DATEADD(dd, 90, DATEDIFF(dd, 00, GETDATE()))
       AND CL.ClientID IS NULL
       AND Datepart(weekday, getdate()) = 1)

答案 1 :(得分:1)

您可以执行以下操作:

SELECT PR.ClientID
        , PR.NewDealEndDate
INTO #OriginalRenewalDetails
FROM Shiva.dbo.ProductRemortgage PR WITH (NOLOCK) 
LEFT JOIN Shiva.dbo.ClientLead AS CL WITH (NOLOCK) 
    ON CONVERT(VARCHAR(50), CL.OriginatorReferenceID) = CONVERT(VARCHAR(50), PR.ClientID)
WHERE CL.ClientID IS NULL
AND
(
    (
        PR.NewDealEndDate = DATEADD(dd, 90, DATEDIFF(dd, 00, GETDATE()))
        AND  Datepart(weekday, getdate()) <> 1 -- 1 is Sunday
    )
    OR
    (
        PR.NewDealEndDate BETWEEN DATEADD(dd, 88, DATEDIFF(dd, 00, GETDATE())) 
        AND DATEADD(dd, 90, DATEDIFF(dd, 00, GETDATE()))
        AND Datepart(dayofweek, getdate()) = 1
    )
)

答案 2 :(得分:1)

declare @adjustment int--SELECT DATEPART(weekday, getdate()) 
set @adjustment =
CASE 
    WHEN DATEPART(weekday, getdate()) 
    in (1,2,3,4,5) THEN 90     
ELSE 88
END

WHERE  
    PR.NewDealEndDate BETWEEN DATEADD(dd, @adjustment...

答案 3 :(得分:1)

此处不需要动态SQL或两个单独的查询。使用您当前使用的任何逻辑替换**DAY = SUNDAY**部分以确定日期是星期日:

WHERE PR.NewDealEndDate BETWEEN DATEADD(DAY, 
    CASE WHEN **DAY = SUNDAY** THEN 88 ELSE 90 END, 
    DATEDIFF(DAY, 0, GETDATE())) AND DATEADD(DAY, 90, DATEDIFF(dd, 0, GETDATE()))
AND CL.ClientID IS NULL;

您也可以事先计算范围,例如

DECLARE @start SMALLDATETIME, @end SMALLDATETIME;

SET @end = DATEADD(DAY, 90, DATEDIFF(DAY, 0, GETDATE()));
SET @start = CASE WHEN **DAY = SUNDAY** THEN DATEADD(DAY, -2, @end) ELSE @end END;

WHERE PR.NewDealEndDate BETWEEN @start END @end
AND CL.ClientID IS NULL;