Re: Migration to version 7.4

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От Bruce Momjian
Тема Re: Migration to version 7.4
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Msg-id 200312011508.hB1F8tx11533@candle.pha.pa.us
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Ответ на Migration to version 7.4  (Nabil Sayegh <postgresql@e-trolley.de>)
Ответы Re: Migration to version 7.4
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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.

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