Robert DiFalco <robert.difalco@xxxxxxxxx> wrote:> > UPDATE contacts SET user_id = u.id > FROM my_users u > JOIN phone_numbers pn ON u.phone_significant = pn.significant > WHERE contacts.owner_id = 7 AND contacts.user_id IS NULL > AND contacts.id = pn.ref_contact_id; > > UPDATE contacts SET user_id = u.id > FROM my_users u > JOIN email_addresses em ON u.email = em.email > WHERE contacts.owner_id = 7 AND contacts.user_id IS NULL > AND contacts.id = em.ref_contact_id; > > They are running slower than I'd like them to even though I have > indices on user_id, owner_id, email, and significant. Have you tried those queries with an index like this?: CREATE INDEX contacts_owner_null_user ON contacts (owner_id) WHERE user_id IS NULL; -- Kevin Grittner EDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
