| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Nabil Sayegh <postgresql(at)e-trolley(dot)de> |
| Cc: | pgsql-novice <pgsql-novice(at)postgresql(dot)org> |
| Subject: | Re: Migration to version 7.4 |
| Date: | 2003-12-01 15:08:55 |
| Message-ID: | 200312011508.hB1F8tx11533@candle.pha.pa.us |
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| Lists: | pgsql-novice |
Nabil Sayegh wrote:
> Hi all,
>
> congratulations to the new release, I couldn't try it yet, but the release
> notes are promising.
>
> However there is one thing that needs a bit more explanation:
>
> 1) Inner joins using the explicit JOIN syntax may behave differently
> because they are now better optimized.
>
> What exactly do you mean by 'may behave differently'?
They will be fully optimized, so they might be faster. In pre-7.4, ANSI
syntax restricted the choices researched by the optimizer.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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