的SQL Server +有条件加入

Question

有，我可以执行条件参加像这样的方式：

CREATE TABLE #Entity 
    ( 
    [AutoID] [int], 
    [Code] [nvarchar](50) NOT NULL, 
    ) 

    INSERT #Entity 
    EXEC Entity_GetEntitiesByUserId @UserID 

    DECLARE @Condition bit = 0 

    SELECT * FROM [Stuff] s 

     IF @Condition = 1 BEGIN 

     INNER JOIN 
     (
     SELECT Code as eCode from 
     #Entity 
     ) e 
     ON E.eCode = s.EntityCode 

     END 

     WHERE DeletedBy IS NULL 

感谢。

Answer 1

这样做的逻辑你想要什么：

SELECT * 
FROM [Stuff] s 
WHERE 
DeletedBy IS NULL 
and (@Condition = 0 or s.EntityCode in (select E.code from #Entitye))