SqlServer 存储过程

ALTER PROCEDURE kxy_proc
AS
BEGIN
  update Student set Age=Age+1 where ID=1
END

exec kxy_proc

ALTER PROCEDURE kxy_proc
  @id int,
  @name varchar(10)
AS
BEGIN
  update Student set Age=Age+1 where ID=@id and Name=@name
END

exec kxy_proc 1,kxy

ALTER PROCEDURE kxy_proc
  @id int,
    @age int OUTPUT
AS
BEGIN
  SELECT @age=s.Age from Student s WHERE s.ID=@id;
end

DECLARE @age int
exec kxy_proc 1,@age OUTPUT
SELECT @age as age