存储过程

use Student
create table UserLogin
(
    UserName varchar(50) not null,
    UserPassword varchar(50) not null
)
alter procedure sp_Login
@uid varchar(50),
@pwd varchar(50),
@result bit output
as
begin
  declare @count int
  set @count=(select count(*) from UserLogin where UserName=@uid and UserPassword=@pwd)
  if @count>1
    begin
     set @result=1
    end
  else
    begin
      set @result=0
    end
end
declare @r bit
exec sp_Login ‘ggg‘,‘ggg‘,@result=@r output
print @r