Jeff Ross <jross@xxxxxxxxxx> writes: > To get the output I want above, I'd think I'd need to do a left outer join > like this: > jross@wykids localhost# select ed_cat_name as "Level", pp_ed_cat_subject as > "Subject", pp_ed_cat_institution as "Institution" from > education_categories left outer join people_education_categories on > (ed_cat_id = pp_ed_cat_id) where pp_ed_cat_pp_id = 1796; This query is actually equivalent to a plain join. The reason is that no null-extended row can possibly satisfy the WHERE clause, since the WHERE is constraining a field from the inner side of the join. Remember WHERE filters the output of the join. Possibly what you want is select ... from education_categories left outer join people_education_categories on (ed_cat_id = pp_ed_cat_id and pp_ed_cat_pp_id = 1796); regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
