存储过程代码阅读

create procedure dbauthenticate
(
@username varchar(100),
@password varchar(100)
)
as
declare @id int
declare @actualpassword varchar(100)
select @id=identitycol,@actualpassword=u_password from userlist where u_username=@username
if @id is not null
if @password=@actualpassword
return @id
else
return -2
else
return -1

create procedure dbregister
(
@username varchar(100),
@password varchar(100)
)
as
if exists(select u_id from userlist where u_username=@username)
return -1
else
insert userlist (u_username,u_password) values (@username,@password)
return @@identity