Rudolf van der Leeden <rudolf.vanderleeden@xxxxxxxxxxxxx> writes: > we are running into a problem with the following upgrade scenario: > Current DB (9.0.5, 300G) is using a table with 2 citext columns and indexes on both columns. > Using pg_upgrade to move from 9.0.5 to 9.1.1 works OK and is done (without the ANALYZE) in 30s. > Because we are using the citext type, the following statement has been executed after the upgrade: > CREATE EXTENSION citext FROM unpackaged > SELECTs are now possible, but we are having problems with UPDATE: > ERROR: could not determine which collation to use for string comparison Hmm. I think the citext update script is missing a couple of things. Try this after the CREATE EXTENSION step: update pg_attribute set attcollation = 100 where atttypid = 'citext'::regtype; It looks like pg_index.indcollation is an issue too, but the least fragile way to fix that might be to drop and recreate indexes on citext columns. regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
