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help / color / mirror / Atom feedFrom: Tom Lane <[email protected]>
To: David G. Johnston <[email protected]>
Cc: [email protected]
Cc: Pg Docs <[email protected]>
Subject: Re: Incorrect Syntax in Function Syntax diagram
Date: Wed, 23 Jun 2021 11:29:11 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAKFQuwaGV+47J9yqoi16Ke7jkzKALO1V=VXrjMPwhMe9tL580w@mail.gmail.com>
References: <[email protected]>
<CAKFQuwaGV+47J9yqoi16Ke7jkzKALO1V=VXrjMPwhMe9tL580w@mail.gmail.com>
"David G. Johnston" <[email protected]> writes:
> On Wed, Jun 23, 2021 at 6:31 AM PG Doc comments form <[email protected]>
> wrote:
> Please separate the [ NOT ] LEAKPROOF from the OR list
> I would agree, and would add that I wonder whether the syntax for the three
> mutually exclusive options should be shown as such instead of having to
> read that in the description notes. Does writing < | { IMMUTABLE | STABLE
> | VOLATILE } > work?
Yeah. The way it's written fails to show, except via formatting,
that IMMUTABLE/STABLE/VOLATILE are mutually exclusive; and then
somebody came along and destroyed the formatting. I agree both
with adding braces and with putting LEAKPROOF on its own line.
The latter is/should be only cosmetic; but the rest of the list
has one line per independent option, and LEAKPROOF is surely
independent of the volatility options.
regards, tom lane
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