sql - 如果记录作为外部表存在于另一个表中，如何不删除？

Question

我有两张 table 。如果我从 table1 中删除一条记录，那么第一个查询应该检查它的 pk 是否作为 table2 中的外键存在，然后它不应该删除该记录，否则它应该删除。

我使用了这个但抛出语法错误

DELETE FROM Setup.IncentivesDetail
INNER JOIN Employee.IncentivesDetail ON Setup.IncentivesDetail.IncentivesDetailID = Employee.IncentivesDetail.IncentiveDetail_ID
WHERE Setup.IncentivesDetail.IncentivesDetailID= @IncentivesDetailID
    AND Employee.IncentivesDetail.IncentiveDetail_ID= @IncentivesDetailID

更新:

根据下面的答案，我已经这样做了，它是否正确？

If Not Exists(Select * from Employee.IncentivesDetail where IncentivesDetail.IncentiveDetail_ID= @IncentivesDetailID)
        Begin
            Delete from Setup.IncentivesDetail
            WHERE Setup.IncentivesDetail.IncentivesDetailID= @IncentivesDetailID
        End
        Else
        Begin
            RAISERROR('Record cannot be deleted because assigned to an employee',16,1) 
            RETURN  
        End

Answer 1

也许像这样？

DELETE FROM Setup.IncentivesDetail
WHERE Setup.IncentivesDetail.IncentivesDetailID= @IncentivesDetailID
  AND NOT EXISTS(SELECT 1 FROM Employee.IncentivesDetail WHERE IncentiveDetail_ID= @IncentivesDetailID) 

但我必须承认，这闻起来有点......你是在做清理工作还是这是你经常做的事情？