| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
| Cc: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, David Steele <david(at)pgmasters(dot)net>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Amit Kapila <amit(dot)kapila(at)enterprisedb(dot)com> |
| Subject: | Re: Combining Aggregates |
| Date: | 2016-04-05 04:54:56 |
| Message-ID: | CA+Tgmob1Mcyh1OiAoMKG=V8SGvb2A02-+7irKfE2KnRTO8Q90A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Mar 30, 2016 at 3:34 PM, David Rowley
<david(dot)rowley(at)2ndquadrant(dot)com> wrote:
> I wrote 0002 - 0004, these were reviewed by Tomas.
> 0005 is Haribabu's patch: Reviewed by Tomas and I.
I think it might be a good idea if these patches made less use of
bytea and exposed the numeric transition values as, say, a 2-element
array of numeric. Maybe this doesn't really matter, but it's not
impossible that these values could be exposed somewhere, and a numeric
is an awful lot more user-friendly than an essentially opaque bytea.
One of the things I eventually want to figure out how to do with this
is distributed aggregation across multiple shards, and I think it
might be better to have the value being sent over the wire be
something like {26.6,435.12} rather than \x1234...
Thoughts?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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