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From: Laurenz Albe <[email protected]>
To: David G. Johnston <[email protected]>
To: Ron Johnson <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: Query performance issue
Date: Tue, 22 Oct 2024 22:47:11 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAKFQuwbV33pOEdayvCaOrgm+qYfVgpnTr8KP-katfxnDfQ+cQg@mail.gmail.com>
References: <CAEzWdqfeaLov=e3Dk_wMpzh0yWhGcVJhundmL=QL1X_KqG_Jfw@mail.gmail.com>
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On Tue, 2024-10-22 at 13:06 -0700, David G. Johnston wrote:
> On Tue, Oct 22, 2024 at 1:01 PM Ron Johnson <[email protected]> wrote:
> > On Tue, Oct 22, 2024 at 3:02 PM Greg Sabino Mullane <[email protected]> wrote:
> > > * Don't use the "FROM table1, table2, table3" syntax but use "FROM table1 JOIN table2 ON (...) JOIN table3 ON (...)
> > 
> > Why?
> 
> Readability is improved when done correctly; and you need to know it for outer joins anyway, so consistency.

Also, you cannot accidentally forget a join condition.

Yours,
Laurenz Albe

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