| From: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
| Cc: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, David Fetter <david(at)fetter(dot)org>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: multivariate statistics (v25) |
| Date: | 2017-04-05 22:17:58 |
| Message-ID: | CANP8+j+nEeS1DiOYyd3gmFV6Ai10D2tjJOGer4ewMX+FD6cxSw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 5 April 2017 at 10:47, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> wrote:
> I've attached an updated patch to address Tomas' concerns and yours too.
Commited, with some doc changes and additions based upon my explorations.
For the record, I measured the time to calc extended statistics as
+800ms on 2 million row sample.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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