SELECT rol_id, display_name, sum(if(u.user_id = 2, 1, 0)) some_user
FROM app_role a LEFT JOIN user_role u USING(role_id)
HAVING some_user = 0
HTH
On 5/16/06, luke saunders <[EMAIL PROTECTED]> wrote:
On 5/16/06, Dan Horne < [EMAIL PROTECTED] > wrote:Hi All
I'm trying to figure out how to perform subqueries with DBIx::Class. For
example, I want to find all the roles that user 2 hasn't been assigned.
The standard SQL is
select role_id, display_name
from app_role a
where not exists
(select 1
from user_role u
where u.user_id = 2
and u.role_id = a.role_id);
What would the DBIx::Class equivalent be?
Regards
Dan Horne
Hi Dan,
Sadly subselects like this aren't possible with DBIC at the moment.
It's definitely on the TODO list, I guess Matt will be able to tell you roughly when it'll be ready. Until then you'll have to find a way of doing it that doesn't require the subselect.
Cheers,
Luke.
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