On Wed, Nov 11, 2015 at 1:33 PM, Tom Lane <tgl@xxxxxxxxxxxxx> wrote: > Massalin Yerzhan <yerzhik@xxxxxxxxx> writes: >> I'm having an issue. The query never ends: >> delete from bb_gamelist_league; > > 9 times out of 10, the answer to this type of problem is that you have > some table referencing this one by a foreign key, and the referencing > column is not indexed. PG doesn't require such an index, but lack of > one will mean that retail checks or deletions of referencing rows are > really slow. > > If you're not sure which table is the problem, try doing an EXPLAIN > ANALYZE of a DELETE that will only remove a few rows. You should > see some time blamed on a trigger associated with the FK constraint. You've answered this question (with the same answer) what feels like a gazillion times. I guess the underlying problem is that EXPLAIN is, uh, not explaining things very well. merlin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
