How to compare text box value with the table data??

Question

Hello ALL,
I created one stored procedure in DB,it is as follows:-
CREATE or replace PROCEDURE chkUser
u in varchar2,
p in varchar2,
ap out varchar2
is
begin
select count(*) into ap from tbuser where loginid = u and password = p;
end;
And at the front end I have designed a form with 2 text boxes, now my question is I wanna compare these text box values(which user enters) with the data of the table....??? something like control (may be I am not sure)..... ???
If anybody can help me out with this issue...... help will be appreciated
Thank you.
regards,
Kumar

Answer 1

hi Elise,
I'm always getting the Error Message as "Invalid Creditianls"... let me tell you the whole scenario with sql synatx.
I have created tables as:-
CREATE TABLE "TBUSER"
(     "LOGINID" VARCHAR2(30) NOT NULL ENABLE,
     "PASSWORD" VARCHAR2(30),
     CONSTRAINT "TBUSER_PK" PRIMARY KEY ("LOGINID") ENABLE
than I created the Procedure on tbuser, it is as:-
create or replace PROCEDURE logincheck
u in varchar2,
p in varchar2,
ap out varchar2
is
begin
select count(*) into ap from tbuser where loginid = u and password = p;
end;
now at the front end side I have created one form with 2 text boxes (P8_USERNAME & P8_PASSWORD) and 2 buttons (Cancel and Submit)
as per you told me in the above post, I have created 'Validation' procedure with Type as 'Exists' and expression(into Validation Expression1)as:-
select 1 from tbuser
where loginid = :P8_USERNAME
and password = :P8_PASSWORD;
and
kept an error message as 'Invalid credentials'.....
but I don't know what's going wrong..... I do have few data into the table, and when I am entering the same data(with case sensitive) I am getting the Error message, rather than when the credentials are perfect user should be allowed to enter into the current page(where I have created this form and validation procedure)....
any idea what's going worng and where...????
thxs.... appreciated..
regards,
Kumar