sql – 从存储过程输出最后插入的主键值

我对这个问题有点困难,因为我不确定如何在SQL Server中执行此操作.

基本上,我想在数据库中插入一个新行,获取刚刚插入的PK值(相同的查询)并将其输出回任何称为存储过程的行：

CREATE PROCEDURE Users_Insert
    -- Add the parameters for the stored procedure here
    @userid int output,@name varchar(50),@surname varchar(50),@email varchar(200),@password varchar(50),@location varchar(50)
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    -- Insert statements for procedure here
    insert into Users(FirstName,LastName,Email,Password,Location)
    values(@name,@surname,@email,@password,@location);
    GO
    @userid = @@IDENTITY;
END

我在MySQL中完成了以下操作：

CREATE PROCEDURE Users_Insert(@userid int output,@location varchar(50)
BEGIN

    insert into Users(FirstName,@location);

    set @userid = last_insert_id();
END

SQL Server给我一个错误：

Msg 102,Level 15,State 1,Procedure Users_Insert,Line 18
Incorrect syntax near ‘@userid’.

坦率地说,我不确定我是否正确地声明了输出参数,有人能提出建议吗？

解决方法

CREATE PROCEDURE Users_Insert
    -- Add the parameters for the stored procedure here
    @userid int output,@location);

    -- make an actual **assignment** here...
    SELECT @userid = SCOPE_IDENTITY();
END

See this blog post for an explanation as to WHY you should use SCOPE_IDENTITY over @@IDENTITY

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