On Sat, Sep 10, 2005 at 01:03:03AM -0300, Marc G. Fournier wrote: > On Fri, 9 Sep 2005, Michael Fuhr wrote: > >INSERT INTO test_check SELECT 1 FROM generate_series(1, 100000); > >INSERT 0 100000 > >Time: 3492.344 ms > > > >INSERT INTO test_fk SELECT 1 FROM generate_series(1, 100000); > >INSERT 0 100000 > >Time: 23578.853 ms > > Yowch, I expected CHECK to be better ... but not so significantly ... I > figured I'd be saving milliseconds, which, on a busy server, would add up > fast ... but not 10k' of milliseconds ...
Results will differ depending on the table structure: if you're indexing ten columns and have five triggers then the foreign key check will have less of an overall impact. -- Michael Fuhr ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
