[Dbix-class] query for m:n relation
David Schmidt
davewood at gmx.at
Sun Oct 3 12:42:45 GMT 2010
I have a m:n relation
picture --<>-- picture_tags --<>-- tags
my @tag_ids = qw/2 5 6/;
Return all pictures which have all tags of the input list set.
select *
from pictures p
where 3 = (
select count(distinct t.id)
from picture_tags pt
inner join tags t on t.id = pt.tag_id
where t.id in (2,5,6)
and pt.picture_id = p.id
)
How to express this query for DBIx::Class is beyond my still evolving
DBIC skills.
david
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