| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> |
| Cc: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: path toward faster partition pruning |
| Date: | 2017-09-15 19:04:35 |
| Message-ID: | CA+TgmoZrHwE+McQtCG+EQdbHPt+a3np=-18Bf2KM=tQUbYDJ2g@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Sep 15, 2017 at 4:50 AM, Amit Langote
<Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> Rebased patches attached. Because Dilip complained earlier today about
> clauses of the form (const op var) not causing partition-pruning, I've
> added code to commute the clause where it is required. Some other
> previously mentioned limitations remain -- no handling of OR clauses, no
> elimination of redundant clauses for given partitioning column, etc.
>
> A note about 0001: this patch overlaps with
> 0003-Canonical-partition-scheme.patch from the partitionwise-join patch
> series that Ashutosh Bapat posted yesterday [1].
It doesn't merely overlap; it's obviously a derivative work, and the
commit message in your version should credit all the authors.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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