| From: | tom <tom(at)tacocat(dot)net> |
|---|---|
| To: | "A(dot) Kretschmer" <andreas(dot)kretschmer(at)schollglas(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: understanding output from Explain |
| Date: | 2007-04-25 10:06:07 |
| Message-ID: | 4C1E449D-FEF8-43BB-9690-8B843F37174A@tacocat.net |
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| Thread: | |
| Lists: | pgsql-general |
Is there a tutorial on this stuff?
I did check the Really Fine Manual and they said explain plans are
beyond the scope RTFM.
On Apr 22, 2007, at 10:36 AM, A. Kretschmer wrote:
> am Sun, dem 22.04.2007, um 9:43:32 -0400 mailte Tom Allison
> folgendes:
>> "Seq Scan on" - is this just a FULL TABLE scan?
>
> Yes.
>
>
> Andreas
> --
> Andreas Kretschmer
> Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
> GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match
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