Alan Nilsson <anilsson@xxxxxxxxx> writes: > Could someone explain to me what I'm missing here. Probably there are some NULLs in dasp.asp_id. NOT IN cannot succeed when there are any nulls in the sub-select result: per SQL spec, the outcome of such a test can only be FALSE or NULL. If that isn't the behavior you want, try recasting the query to use NOT EXISTS. 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
