Question

我想将数据保存在变量中，稍后在过程中使用它。

UPDATE  acc_Account
                SET     acc_Account.CompanyID = ( SELECT TOP 1
                                                          utl_Company.CompanyID
                                                  FROM    utl_Company
                                                  ORDER BY CompanyID DESC
                                                )
                WHERE   acc_Account.AccountNumber = @AccountNumber

如何将CompanyID保存在变量中，以便稍后在插入语句中使用它？

Answer 1

在代码的开头有这个：

declare @var varchar(20) -- change the data type according to your needs
set @var = (SELECT TOP 1 utl_Company.CompanyID FROM utl_Company ORDER BY CompanyID DESC)

Answer 2

在更新语句之前创建select local variable，然后设置它，然后使用它。

DECLARE @companyID INT;
SELECT @companyID = "YOUR QUERY";

Answer 3

我认为有效的方法是使用OUTPUT子句

DECLARE @TAB TABLE (CompanyID BIGINT  )
UPDATE acc_Account
SET acc_Account.CompanyID = (
        SELECT max(CompanyID) FROM utl_Company
        )
output inserted.CompanyID into @TAB
WHERE acc_Account.AccountNumber = @AccountNumber

SELECT * FROM @TAB

如何将更新语句值添加到变量？

3 个答案: