Axel Rau <Axel.Rau@xxxxxxxxx> writes: > Am 30.10.2018 um 14:45 schrieb Tom Lane <tgl@xxxxxxxxxxxxx>: >> Axel, would you try two more things on that DB? > nextcloud=> explain select ((pg_has_role(relowner, 'USAGE'::text) OR has_sequence_privilege(oid, 'SELECT, UPDATE, USAGE'::text))) from pg_class; > QUERY PLAN > ----------------------------------------------------------- > Seq Scan on pg_class (cost=0.00..28.56 rows=656 width=1) > (1 row) > nextcloud=> explain select (relkind = 'S'::"char") from pg_class; > QUERY PLAN > ----------------------------------------------------------- > Seq Scan on pg_class (cost=0.00..28.56 rows=656 width=1) > (1 row) That is ... odd. Is it possible that you have cpu_operator_cost set to zero, or some very tiny number? regards, tom lane
