| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Jeff Davis <pgsql(at)j-davis(dot)com> |
| Cc: | Greg Sabino Mullane <htamfids(at)gmail(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Corey Huinker <corey(dot)huinker(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Michael Paquier <michael(at)paquier(dot)xyz>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Stephen Frost <sfrost(at)snowman(dot)net>, Peter Smith <smithpb2250(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, alvherre(at)alvh(dot)no-ip(dot)org, jian he <jian(dot)universality(at)gmail(dot)com> |
| Subject: | Re: Statistics Import and Export |
| Date: | 2025-03-01 21:23:39 |
| Message-ID: | 3071639.1740864219@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Jeff Davis <pgsql(at)j-davis(dot)com> writes:
> On Sat, 2025-03-01 at 13:52 -0500, Greg Sabino Mullane wrote:
>> Also, anything trained to parse pg_dump output will have to learn
>> about the new SELECT pg_restore_ calls with their multi-line formats
>> (not 100% sure we don't have that anywhere, as things like "SELECT
>> setval" and "SELECT set_config" are single line, but there may be
>> existing things)
> That's an interesting point. What tools are currrently trying to parse
> pg_dump output?
That particular argument needs to be rejected vociferously. Otherwise
we could never make any change at all in what pg_dump emits. I think
the standard has to be "if you parse pg_dump output, it's on you to
cope with any legal SQL".
I do grasp Greg's larger point that this is a big change in pg_dump's
behavior and will certainly break some expectations. I kind of lean
to the position that we'll be sad in the long run if we don't change
the default, though. What other part of pg_dump's output is not
produced by default?
regards, tom lane
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