Re: Variable substitution in psql backtick expansion

From: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
To: Daniel Verite <daniel(at)manitou-mail(dot)org>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Developers <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Re: Variable substitution in psql backtick expansion
Date: 2017-04-02 06:53:25
Message-ID: alpine.DEB.2.20.1704020841490.4632@lancre
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Bonjour Daniel,

> I think that users would rather have the option to just put
> an SQL expression behind \if.

Note that this is already available indirectly, as show in the
documentation.

SELECT some-boolean-expression AS okay \gset
\if :okay
\echo boolean expression was true
\else
\echo boolean expression was false
\endif

--
Fabien.

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