Re: FW: Simple join optimized badly?

From: Mark Kirkwood <markir(at)paradise(dot)net(dot)nz>
To: "H(dot)J(dot) Sanders" <hjs(at)rmax(dot)nl>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: FW: Simple join optimized badly?
Date: 2006-10-12 09:59:23
Message-ID: 452E11FB.7070704@paradise.net.nz
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H.J. Sanders wrote:

> why not just like in some other (commercial) databases:
>
> a statement to say: use index ............
>
> I know this is against all though but if even the big ones can not resist
> the pressure of their users, why not?
>

Yeah - some could not (e.g. Oracle), but some did (e.g. DB2), and it
seemed (to me anyway) significant DB2's optimizer worked much better
than Oracle's last time I used both of them (Oracle 8/9 and DB2 7/8).

cheers

Mark

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