我无法使用IF选择2条件

Question

我该如何解决这个问题？

我的代码：

if (exists (select OperationDocumentReportExamCode from OperationDocumentReportExam where OperationDocumentReportExamCode = @CODE) AND @OVERRIDE IS '0')
  Begin  
   Select 0 as Result  
  End

Answer 1

IF (@OVERRIDE = 0 
    AND EXISTS (SELECT 1 
                FROM   operationdocumentreportexam 
                WHERE  operationdocumentreportexamcode = @CODE)) 
  BEGIN 
      SELECT 0 [Result] 
  END 

Answer 2

IF EXISTS
(  SELECT 1 FROM OperationDocumentReportExam
   WHERE OperationDocumentReportExamCode = @CODE
) AND @OVERRIDE = 0
Begin
   SELECT 0 AS Result  
End

Answer 3

稍微修改了一下您的查询：

if exists (select OperationDocumentReportExamCode from OperationDocumentReportExam where OperationDocumentReportExamCode = @CODE) AND @OVERRIDE = '0'
  Begin  
   Select 0 as Result  
  End