Greg Stark <gsstark@mit.edu> writes:
> That was the detail I was missing. I'm surprised because I actually tested
> this before I sent the message and saw a plan like this with a single
> sequential scan node despite the three child tables:
> staging=> explain select * from _test where a=1;
> QUERY PLAN
> ------------------------------------------------------
> Seq Scan on _test (cost=0.00..22.50 rows=5 width=4)
> Filter: (a = 1)
> (2 rows)
Uh, maybe you have sql_inheritance turned off? Every version I can
remember would show you a pretty explicit Append plan for inheritance
scans...
regards, tom lane