Horton

Re: factorial function/phase out postfix operators?

John Naylor <john.naylor@2ndquadrant.com>

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From: John Naylor <john.naylor@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2020-08-24T07:28:17Z
Lists: pgsql-hackers 
On Tue, May 19, 2020 at 5:03 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
> > What are the thoughts about then marking the postfix operator deprecated
> > and eventually removing it?
>
> If we do this it'd require a plan.  We'd have to also warn about the
> feature deprecation in (at least) the CREATE OPERATOR man page, and
> we'd have to decide how many release cycles the deprecation notices
> need to stand for.
>
> If that's the intention, though, it'd be good to get those deprecation
> notices published in v13 not v14.

I imagine the release candidates are not too far away by now, and if
we are confident enough in the direction the patches in this thread
are going, we should probably consider a deprecation notice soon.

-- 
John Naylor                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Commits

  1. Remove precedence hacks no longer needed without postfix operators.

  2. Allow most keywords to be used as column labels without requiring AS.

  3. Remove support for postfix (right-unary) operators.

  4. Remove factorial operators, leaving only the factorial() function.

  5. Further refine patch for commenting operator implementation functions.