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From: Tom Lane <[email protected]>
To: Harjyot Bagga <[email protected]>
Cc: Aleksander Alekseev <[email protected]>
Cc: [email protected]
Subject: Re: Grammar guidelines in Postgres
Date: Thu, 04 Jul 2024 12:01:55 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <CA+FYKR-NVQ3tWhBroCeqBLPHzjEjUGUrCWA=_Yxcs6mWFm-7oQ@mail.gmail.com>
References: <CA+FYKR-ogq6WnLtc2bKvFx5qr7UK0aYUssowb=F_zOxD0uDFXQ@mail.gmail.com>
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	<CA+FYKR-NVQ3tWhBroCeqBLPHzjEjUGUrCWA=_Yxcs6mWFm-7oQ@mail.gmail.com>

Harjyot Bagga <[email protected]> writes:
> One such suggestion or rule for example is the Postgres does not support
> Postfix operators. So whenever a new feature is introduced developers make
> sure that they do not add a postfix operators in their grammar. Just like
> that are there any other further rules or suggestions compiled by post
> hackers and maintainers?

[ shrug... ]  If you try to re-introduce postfix operators you'll get
a ton of shift-reduce conflicts.  We have a hard rule that such
conflicts are not allowed, even though Bison can be told to ignore
them.  Beyond that, there's not much.

			regards, tom lane

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