>
> FWIW I suggest you provide the data in a form that's easier to use (like
> a working SQL script). More people are likely to look and help than when
> they have to extract stuff from an e-mail, fill in missing pieces etc.
>
BTW if anyone wants to play with this, here are the SQL scripts I used
to create the tables and the queries. There's no data, but it's enough
to see how the plans change.
regards
--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company