Re: Indexes on partitioned tables and foreign partitions

From: Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>
To: Arseny Sher <a(dot)sher(at)postgrespro(dot)ru>
Cc: "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Indexes on partitioned tables and foreign partitions
Date: 2018-05-09 12:52:15
Message-ID: CAFjFpRe0QDU10uR3MeGcrGCvU5xuiqcPBa9P5yWwSdaUBiKtGA@mail.gmail.com
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On Wed, May 9, 2018 at 5:20 PM, Arseny Sher <a(dot)sher(at)postgrespro(dot)ru> wrote:
> Hi,
>
> 8b08f7d4 added propagation of indexes on partitioned tables to
> partitions, which is very cool. However, index creation also recurses
> down to foreign tables. I doubt this is intentional, as such indexes are
> forbidden as not making much sense; attempt to create index on
> partitioned table with foreign partition leads to an error
> now. Attached lines fix this.
>

The patch looks good, but I guess that we have to do some tricks with
the validity of index on the partitioned table since not all
partitions have a given index when one of those is a foreign
partition.
--
Best Wishes,
Ashutosh Bapat
EnterpriseDB Corporation
The Postgres Database Company

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