SQL SERVERC存储过程中捕获异常

今天有个老朋友忽然问我一个问题，关于存储过程的。这个存储很简单：

CREATE PROCEDURE Proc_InsertTemp
  (
    @number varchar(3000),
    @name varchar(2100),
    @output varchar(100) output
   )
AS
BEGIN
　BEGIN TRANSACTION operTran1
  SET NOCOUNT ON;
  DECLARE @outputerr varchar(3000)
  insert into dbo.Table_1 values(@number,@name)
  if @@error<>0 or @@rowcount = 0
   begin
     select @output = '-1'
     rollback transaction operTran1
     return
   end
  else 
  begin
    COMMIT TRANSACTION operTran1
  end
END 

 

表Table_1的结构也很简单：

CREATE TABLE [dbo].[Table_1](
    [number] [int] NULL,
    [value] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL
)