Wikimedia Bugzilla is closed!

update.php fails when updating from 1.12.3 to 1.13.3 in
the following script:

maintenance/postgres/archives/patch-ipb_address_unique.sql

It only have:

DROP INDEX IF EXISTS ipb_address;
CREATE UNIQUE INDEX ipb_address_unique ON ipblocks (ipb_address,ipb_user,ipb_auto,ipb_anon_only);


However, 'IF EXISTS' was introduced in Postgresql 8.2.