Re: psql metaqueries with \gexec

From: Corey Huinker <corey(dot)huinker(at)gmail(dot)com>
To: Daniel Verite <daniel(at)manitou-mail(dot)org>
Cc: Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, PostgreSQL <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: psql metaqueries with \gexec
Date: 2016-02-22 16:30:23
Message-ID: CADkLM=fEFM5sAoi2p+jx_A_wEHYpBmvfbHwpvbUEyP2wpOKCXA@mail.gmail.com
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On Mon, Feb 22, 2016 at 10:08 AM, Daniel Verite <daniel(at)manitou-mail(dot)org>
wrote:

> Corey Huinker wrote:
>
> > ...and query text visibility, and result visibility, and error handling,
> > etc. In this case, we're leveraging the psql environment we'd already set
> > up, and if there's an error, \set ECHO queries shows us the errant SQL as
> > if we typed it ourselves..
>
> BTW, about error handling, shouldn't it honor ON_ERROR_STOP ?
>
> With the patch when trying this:
>
> => set ON_ERROR_STOP on
> => select * from (values ('select 1/0', 'select 1/0')) AS n \gexec
>
> it produces two errors:
> ERROR: division by zero
> ERROR: division by zero
>
> I'd rather have the execution stop immediately after the first error,
> like it's the case with successive queries entered normally via the
> query buffer:
>
> => \set ON_ERROR_STOP on
> => select 1/0; select 1/0;
> ERROR: division by zero
>
> as opposed to:
>
> => \set ON_ERROR_STOP off
> => select 1/0; select 1/0;
> ERROR: division by zero
> ERROR: division by zero
>
>
Yes, I would like it to honor ON_ERROR_STOP. I'll look into that.

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