From: | Richard Huxton <dev(at)archonet(dot)com> |
---|---|
To: | "Alessandro Depase" <alessandro(dot)depase(at)libero(dot)it>, "Peter Eisentraut" <peter_e(at)gmx(dot)net>, <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: failed to build any 5-way joins |
Date: | 2003-12-16 16:12:02 |
Message-ID: | 200312161612.02303.dev@archonet.com |
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Lists: | pgsql-sql |
On Tuesday 16 December 2003 15:34, Alessandro Depase wrote:
>
People smarter than me are looking at this, but I can give you some quick
feedback.
> Version? In my previous message I told that I'm using 7.4-1 on cygwin
> distribution. What other info do you need? How can I get them?
Are you sure it's 7.4.1? I wasn't aware that was publicly released yet.
> All I can think more than this is that I use a Windows XP O.S. and that I
> got this error both using JDBC and using pgAdmin III (but it seems to me
> that this is an error client-independent).
It certainly looks like a bug in PG itself, rather than client-related. I'd
agree with your guess that it's somewhere in the query rewriter.
> The other problem, however, as I asked before, is: where can I find the
> documentation for this error (well, besides the source, of course)? are
> there known limits in joining tables?
I'm not aware of any particular limits on joins. There's even a genetic
optimiser that kicks in when joins go above a certain number of tables
(default of 12 but configurable in 7.4 iirc?).
--
Richard Huxton
Archonet Ltd
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