RE: [HACKERS] [hackers]development suggestion needed

> -----Original Message-----
> From: owner-pgsql-hackers@postgreSQL.org
> [mailto:owner-pgsql-hackers@postgreSQL.org]On Behalf Of Tom Lane
> 
> xun@cs.ucsb.edu (Xun Cheng) writes:
> > I want to experiment with some new fast join algorithms.
> 
> Cool.  Welcome aboard!
> 
> > Could anyone tell me if
> > the directory /docs/pgsql/src/backend/executor is the 
> > right place to start
> 
> The executor is only half the problem: you must also teach the
> planner/optimizer how and when to use the new join type.
> 
> Hiroshi Inoue has recently been down this path (adding support
> for TID-based scans), and might be able to give you more specific
> advice.
>

Hmm,un(??)fortunately,I didn't have to understand details about join
to implement Tidscan. It's a basic scan and is used to scan one relation.

I don't know about document well either,sorry.  AFAIK,Tom is
decidedly superior to me in understanding planner/optimizer. 

Regards.

Hiroshi Inoue
Inoue@tpf.co.jp