| From: | Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com> |
|---|---|
| To: | Rafia Sabih <rafia(dot)sabih(at)enterprisedb(dot)com> |
| Cc: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Robert Haas <robertmhaas(at)gmail(dot)com>, Rajkumar Raghuwanshi <rajkumar(dot)raghuwanshi(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Partition-wise join for join between (declaratively) partitioned tables |
| Date: | 2017-07-21 06:41:31 |
| Message-ID: | CAFjFpRcQ2CspZe+iJA53Gj9YOdxAE5pw=bsLkjFUVQNJrPqBwQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Jul 21, 2017 at 11:54 AM, Rafia Sabih
<rafia(dot)sabih(at)enterprisedb(dot)com> wrote:
> So, does this
> also mean that a partitioned table will not join with an unpartitioned
> table without append of partitions?
>
Yes. When you join an unpartitioned table with a partitioned table,
the planner will choose to append all the partitions of the
partitioned table and then join with the unpartitioned table.
--
Best Wishes,
Ashutosh Bapat
EnterpriseDB Corporation
The Postgres Database Company
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