Re: idea: custom log_line_prefix components besides application_name

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: David Fetter <david(at)fetter(dot)org>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Chapman Flack <chap(at)anastigmatix(dot)net>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: idea: custom log_line_prefix components besides application_name
Date: 2017-05-09 19:24:21
Message-ID: 17068.1494357861@sss.pgh.pa.us
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David Fetter <david(at)fetter(dot)org> writes:
> On Tue, May 09, 2017 at 12:48:01PM -0400, Tom Lane wrote:
>> I don't think that's a problem: while psql will remove "--" and everything
>> following it until newline, it won't remove the newline. So there's still
>> a token boundary there.

> We may still need to be careful.

> davidfetter(at)davidfetter=# SELECT 'foo'-- stuff goes here
> 'bar';
> ?column?
> ----------
> foobar
> (1 row)

If you read the SQL spec, you'll find that particular behavior is
required by spec, and would still be required by spec with or
without the comment. Perhaps it's a trap for unwary SQL programmers,
but psql isn't making it worse.

regards, tom lane

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