Sql server 从存储过程返回输出

通过裸体选择，我得到了正确的标识

declare @iden table (pk int);

update top (1) lockDate with (UPDLOCK) 
set dt = GETDATE()
output inserted.iden into @iden   
where dt is null 

select top (1) iden.pk
from @iden iden;

当我尝试将其放入存储过程时，总是得到一个0

你知道我做错了什么吗

DROP PROCEDURE addLockDate

CREATE PROCEDURE addLockDate
AS  
    DECLARE @iden TABLE (pk INT);

    UPDATE TOP (1) lockDate WITH (UPDLOCK) 
    SET dt = GETDATE()
    OUTPUT inserted.iden INTO @iden   
    WHERE dt IS NULL

    RETURN SELECT TOP (1) iden.pk
           FROM @iden iden
GO

---

未经测试，但这可能有效：

drop PROCEDURE addLockDate
CREATE PROCEDURE addLockDate
AS  
    declare @iden table (pk int);
    update top (1) lockDate with (UPDLOCK) 
       set dt = GETDATE()
    output inserted.iden into @iden   
    where dt is null 
    return (select top (1) iden.pk
    from @iden iden);
GO

这肯定会奏效：

drop PROCEDURE addLockDate
CREATE PROCEDURE addLockDate
AS  
    declare @iden table (pk int);
    declare @outint int;
    update top (1) lockDate with (UPDLOCK) 
       set dt = GETDATE()
    output inserted.iden into @iden   
    where dt is null 
    set @outint = (select top (1) iden.pk
    from @iden iden);
    return @outint;
GO

---

试着把最后的选择放在括号里？或者使用一个中间变量。更新top 1？？？@SeanLange是的，这就是我想从过程中删除的“return”，这甚至是有效的语法？它如何知道要更新哪一行？它需要一个顺序，我猜在update语句中该顺序是无效的。我觉得这里有些不对劲。