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)并将其输出回任何调用存储过程的内容:
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, @name varchar(50), @surname varchar(50), @email varchar(200), @password varchar(50), @location varchar(50)
BEGIN
insert into Users(FirstName, LastName, Email, Password, Location)
values(@name, @surname, @email, @password, @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
'@ userid'附近的语法不正确。
坦率地说,我不确定我是否正确宣布输出参数,有人可以提供建议吗?
答案 0 :(得分:12)
您需要将值分配给@userid
!另外,我建议使用SCOPE_IDENTITY()
而不是@@IDENTITY
:
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);
-- 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