Horton

Re: Variable substitution in psql backtick expansion

Corey Huinker <corey.huinker@gmail.com>

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From: Corey Huinker <corey.huinker@gmail.com>
To: Daniel Verite <daniel@manitou-mail.org>
Cc: Fabien COELHO <coelho@cri.ensmp.fr>, Tom Lane <tgl@sss.pgh.pa.us>, PostgreSQL Developers <pgsql-hackers@postgresql.org>
Date: 2017-04-03T20:35:18Z
Lists: pgsql-hackers 
>
> I assume we want to keep that pre-existing behavior of \set in
> psql, that is, making a copy of that string and associating a
> name to it, whereas I guess pgbench computes a value from it and
> stores that value.
>

Maybe a \set-variant called \expr?

Commits

  1. Add psql variables showing server version and psql version.

  2. Reformat psql's --help=variables output.

  3. Remove reinvention of stringify macro.

  4. Allow psql variable substitution to occur in backtick command strings.