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From: Robert Haas <[email protected]>
To: Etsuro Fujita <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Ashutosh Bapat <[email protected]>
Cc: Rajkumar Raghuwanshi <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: Expression errors with "FOR UPDATE" and postgres_fdw with partition wise join enabled.
Date: Sun, 12 Aug 2018 22:57:25 -0400
Message-ID: <CA+TgmoYhgEkcR1E-BMS-2G8A4_5z0bbN6vCO+uR7HyQCOsWpEw@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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On Mon, Aug 6, 2018 at 8:30 AM, Etsuro Fujita
<[email protected]> wrote:
> In the above I used the test whether the relation's reloptkind is
> RELOPT_BASEREL or not, but I noticed that I had overlooked the case of a
> multi-level partitioned table.  So I fixed that and added regression test
> cases for that.  I also revised comments a bit.  Attached is an updated
> version of the patch.

+       /* If so, consider partitionwise joins for that join. */
+       if (IS_PARTITIONED_REL(joinrel))
+               joinrel->consider_partitionwise_join = true;

Maybe this should assert that the inner and outer rels have
consider_partitionwise_join set.  There is an Assert quite a bit
earlier in the function that the parent join have it set, but I think
it might make sense to check the children have it set whenever we set
the flag.

Aside from that I don't really have any suggestions on this.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company




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  Subject: Re: Expression errors with "FOR UPDATE" and postgres_fdw with partition wise join enabled.
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