Multiple list passing in query...

Question

Hi,
I have a seacrh based on the qualification, the query of which is as under:
select * from service_user_master
where qualification = '&qualification'
But here, user can multiselect qualification and so how can i pass multiple selection of qualification in the above query to retrieve result based on those selected qualifications...? also, user may select one, two or more or none qualification which i need to pass to above query. i.e. no. of selection from list is also not fixed and whatever he selects I will need to pass this to above query.. I need to do this in query if possible..
Pls. guide me..
Thanks,
JP

Answer 1

Fill a table with the qualifications selected and then join to it.
insert into session_input_quantifications( session_id, qualification)
values ( 1, 'qual1);
insert into session_input_quantifications( session_id, qualification)
values ( 1, 'qual2);
select * from service_user_master m
join session_input_quantifications q on m.qualification = q.qualification
where q.session_id = 1
You would need some way of tracking the session to identify the query.
You could also do this with a Global temp table without the session_id
or
generate a dynamic in clause with the selected qualifications
select * from service_user_master
where qualification in ( 'qual1', 'qual2', ...)