Re: BUG #6154: wrong result with nested left-joins

Kevin, thanks a lot for your answer! As my servers are production systems
and as I have an acceptable workaround for my needs, I will wait around with
a postgresql upgrade =)

I just tried to help with discovering of a potential bug =)) Anyway I'm very
glad to know, that in new version it's not an issue already =)


Kind regards

Alexey Isaiko

Television department consultant

All-Russian Research Institute of TV and Radio Broadcasting
Russian Media Group
TV-channels: RUTV, Hip Hop Hit

-----Original Message-----
From: Kevin Grittner [mailto:Kevin.Grittner@wicourts.gov]
Sent: Monday, August 08, 2011 8:52 PM
To: listar; pgsql-bugs@postgresql.org
Subject: Re: [BUGS] BUG #6154: wrong result with nested left-joins

"listar" <listar@mail.ru> wrote:

> PostgreSQL version: 8.4.5

> Description:        wrong result with nested left-joins

> And this is the problem - value2 can't be NULL because of COALESCE in
> sub4 (at least I think that it can't be =))

This works correctly in release 9.0.4 and development HEAD.  I don't still
have any machines handy which are running 8.4, but you might want to try it
on the latest bug-fix version of 8.4 (currently
8.4.8) to see if the fix was back-patched.

http://www.postgresql.org/support/versioning

-Kevin