From: | Jesper Pedersen <jesper(dot)pedersen(at)redhat(dot)com> |
---|---|
To: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> |
Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Jeevan Ladhe <jeevan(dot)ladhe(at)enterprisedb(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: partition tree inspection functions |
Date: | 2018-07-18 14:35:56 |
Message-ID: | 4f4a2518-6c62-5463-6ac2-1241ae9d6041@redhat.com |
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Lists: | pgsql-hackers |
Hi Amit,
On 06/28/2018 01:49 AM, Amit Langote wrote:
> OK, I've added an example below the table of functions added by the patch.
>
> Attached updated patch.
>
You forgot to remove the test output in create_table.out, so check-world
is failing.
In pg_partition_parent
+ else
+ /* Not a partition, return NULL. */
+ PG_RETURN_NULL();
I would just remove the "else" such that PG_RETURN_NULL() is fall-through.
I think pg_partition_tree_tables should have an option to exclude the
table that is being queried from the result (bool include_self).
Maybe a function like pg_partition_number_of_partitions() could be of
benefit to count the number of actual partitions in a tree. Especially
useful in complex scenarios,
select pg_partition_number_of_partitions('p') as number;
number
---------
4
(1 row)
New status: WfA
Best regards,
Jesper
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