tsql动态

Question

我在这个过程中苦苦挣扎。

如果是周一到周四，我希望所有的事情都提前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，如果是星期天，我希望在Where子句中更改以下内容。这样我也能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来做这件事。感谢您的帮助。

Answer 1

这里不需要动态SQL或两个单独的查询。将**DAY = SUNDAY**部件替换为您当前用于确定日期是星期天的逻辑：

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;

你也可以预先计算出范围，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;

Answer 2

使用IF。

伪：

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

或者将WHERE子句更改为类似以下内容：

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)

Answer 3

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
    )
)