Re: Proposal: USING clause for DO statement

From: Merlin Moncure <mmoncure(at)gmail(dot)com>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, Petr Jelinek <pjmodos(at)pjmodos(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Proposal: USING clause for DO statement
Date: 2009-11-21 18:35:19
Message-ID: b42b73150911211035g37c77799o5b774dc85aa42342@mail.gmail.com
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On Sat, Nov 21, 2009 at 1:24 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
> 2009/11/21 Merlin Moncure <mmoncure(at)gmail(dot)com>:
>> On Sat, Nov 21, 2009 at 12:36 PM, Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
>>>> Perhaps part of the problem is that psql can't interpolate its variable
>>>> into strings. Solving that might lessen the impetus for this, and have other
>>>> uses besides.
> I am not sure, if I understand well. Can you show some use cases, please?

If I understand Andrew correctly,

\set msg world

DO $$
BEGIN
RAISE NOTICE 'Hello, %', :msg;
END
$$;

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