Ivan Sergio Borgonovo <mail@webthatworks.it> writes:
> Well I reached 3Gb of work_mem and still I got:
> "Seq Scan on catalog_categoryitem (cost=31747.84..4019284477.13
> rows=475532 width=6)"
> " Filter: (NOT (subplan))"
> " SubPlan"
> " -> Materialize (cost=31747.84..38509.51 rows=676167 width=8)"
> " -> Seq Scan on catalog_items (cost=0.00..31071.67
> rows=676167 width=8)"
Huh. The only way I can see for that to happen is if the datatypes
involved aren't hashable. What's the datatypes of the two columns
being compared, anyway?
regards, tom lane