Question

我需要查询如下：

SELECT top (1) @AddressRepeatNum=a.CheckNumber FROM(
UPDATE dbo.SearchList SET CheckNumber=CheckNumber+1 
OUTPUT inserted.CheckNumber AS CheckNumber 
WHERE PageAddress=@Address and CheckNumber<6
) as a

但它不起作用。我应该如何重写它？简单来说，我想在我的表的一列中添加一个，然后如果它大于5则执行某些操作

Answer 1

您不能直接在这样的更新上进行选择。您将输出信息插入表变量，然后从表变量中选择。

DECLARE @AddressRepeatNum INT, @Address varchar (500) = 'Test'
DECLARE @Check table (checknumber INT)
UPDATE dbo.SearchList SET CheckNumber=CheckNumber+1 
OUTPUT inserted.CheckNumber into @Check
WHERE PageAddress=@Address and CheckNumber<6

SELECT TOP (1) @AddressRepeatNum=CheckNumber 
FROM @check 
ORDER BY CheckNumber

嵌套更新SQL Server和SELECT

1 个答案: