On 19 Apr 2012, at 6:26, Ondrej Ivanič wrote: > I have query which does everything but I have mixed feelings about it: > select > b1.org_id, b1.contract_name, coalesce(b2.count, b1.count) as count > from (select * from billing where org_specific_rule = false) as b1 > left join billing b2 on > b1.org_id = b2.org_id > and b1.contract_name = b2.contract_name > and b2.org_specific_rule = true > order by 1,2; You don't need the subquery. Also, if you can have multiple 'false' rows for the same unique identifier, you'll want to sum them. Untested, but I think this is what you want: select b1.org_id, b1.contract_name, sum(b1.count) + sum(coalesce(b2.count, 0)) as count from billing as b1 left join billing b2 on b1.org_id = b2.org_id and b1.contract_name = b2.contract_name and b2.org_specific_rule = false and b1.org_specific_rule = true group by b1.org_id, b1.contract_name order by b1.org_id, b1.contract_name; Alban Hertroys -- Screwing up is an excellent way to attach something to the ceiling. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
