Store Procedure thêm, xóa, sửa.

**Admin** Thu Mar 29, 2012 1:02 am

@Action char(1),
@UserName nvarchar(50),
@Pass nvarchar(50),
@error nvarchar(50) output
as
begin tran
if @Action=’t’
begin
if exists (select UserName from Account where UserName=@UserName)
begin
update Account set Pass=@Pass where UserName=@UserName
if @@ERROR<>0
begin
set @error=N’Sửa Thất Bại’
if @@TRANCOUNT <>0
rollback tran
goto Error
end
else
set @error=N’Sửa Thành Công’
end
else
begin
insert into Account(UserName,Pass) values (@UserName,@Pass)
if @@ERROR<>0
begin
set @error=N’Thêm Thất Bại’
if @@TRANCOUNT<>0
rollback tran
goto Error
end
else
set @error=N’Thêm Thành Công’
end
end
if @Action=’x’
begin
if exists (select UserName from Account where UserName=@UserName)
begin
delete Account where UserName=@UserName
if @@ERROR<>0
begin
set @error=N’Xóa Thất Bại’
if @@TRANCOUNT<>0
rollback tran
goto Error
end
else
set @error=N’Xóa Thành Công’
end
else
set @error=N’Tài Khoản Này Không Tồn Tại’
end
select @error
commit tran