Horton

Re: Parallel Aggregates for string_agg and array_agg

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: David Rowley <david.rowley@2ndquadrant.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2018-03-02T00:50:20Z
Lists: pgsql-hackers 
On 2018-03-02 13:48:00 +1300, David Rowley wrote:
> On 2 March 2018 at 10:26, Andres Freund <andres@anarazel.de> wrote:
> > FWIW, I've heard numerous people yearn for json*agg
> 
> I guess it'll need to be PG12 for now. I'd imagine string_agg and
> array_agg are more important ones to tick off for now, but I bet many
> people would disagree with that.

Oh, this was definitely not meant as an ask for something done together
with this submission.

Thanks for the quick update.

Greetings,

Andres Freund

Commits

  1. Fix unstable aggregate regression test

  2. Allow parallel aggregate on string_agg and array_agg

  3. Improve performance of ORDER BY / DISTINCT aggregates

  4. Support ORDER BY within aggregate function calls, at long last providing a

  5. Fix broken markup.