Re: Optimizing a request

Jean,

> I have the following structure in my base 7.4.2

Upgrade to 7.4.5.  The version you're using has several known issues with data
restore in the event of system failure.

> Hash Join  (cost=8.27..265637.59 rows=25 width=130)
>   Hash Cond: ("outer".rub_id = "inner".rub_id)
>   ->  Seq Scan on article  (cost=0.00..215629.00 rows=10000000 width=108)
>   ->  Hash  (cost=8.26..8.26 rows=3 width=22)
>         ->  Index Scan using rubrique_parent on rubrique
> (cost=0.00..8.26 rows=3 width=22)
>               Index Cond: (rub_parent = 8)

Those look suspiciously like stock estimates.  When was the last time you ran
ANALYZE?


--
--Josh

Josh Berkus
Aglio Database Solutions
San Francisco