布爾在案例中使用集合sql在where子句中

Question

我試圖使用Not In與布爾變量在哪裏確定是否搜索一組內容。例如：

Select 
     BLAH 
    FROM 
     BLAH 
    WHERE 
     ... 
     AND CASE WHEN @variable = 'false' THEN 
      warningcode1 NOT IN (101,102,103) 

Answer 1

試試這個

Select 
     BLAH 
    FROM 
     BLAH 
    WHERE 
     ... 
     AND (@variable <> 'false' OR warningcode1 NOT IN (101,102,103)) 

Answer 2

只需使用：只有

AND (@variable <> 'false' OR warningcode1 NOT IN (101,102,103)) 

所以warningcode1事項如果變量= '假'，othwerwise它將被忽略。

Answer 3

試試這個，如果有

AND IF(@variable = 'false' , warningcode1 NOT IN (101,102,103) , warningcode1 IN (101,102,103))