Marc Cousin <cousinmarc@xxxxxxxxx> writes: > Anyway here is the problem : when using constraint_exclusion=partition, a > delete query scans all partitions, when the same query rewritten as a select > is removing partitions as expected. When constraint_exclusion=on, the > partition removal works as expected with the delete too. I've tested it on 8.4 > and 9.0 Hmm, this seems like a shortcoming in the constraint_exclusion=partition feature. The reason it doesn't work is that inheritance expansion of a DELETE/UPDATE target rel is handled entirely differently from expansion of a SELECT source. But it seems like it would be desirable if it did work. 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
