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Date: Thu, 29 Jul 2021 18:24:17 -0400
From: Bruce Momjian <bruce@momjian.us>
To: michal.palenik@freemap.sk, pgsql-docs@lists.postgresql.org
Subject: Re: getting table name from partition
Message-ID: <20210729222417.GW9600@momjian.us>
References: <162627031219.693.11508199541771263335@wrigleys.postgresql.org>
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On Wed, Jul 14, 2021 at 01:45:12PM +0000, PG Doc comments form wrote:
> The following documentation comment has been logged on the website:
> 
> Page: https://www.postgresql.org/docs/13/ddl-partitioning.html
> Description:
> 
> I would like to add a sentence like this into the description of
> partitions:
> 
> You receive the name of the partition table data is from using
> tableoid::regclass as column name in the select.
> 
> to tell the option of getting "real" tablename, eg when partitions are based
> on locality.

We already have this sentence in the partition docs:

	Since a partition hierarchy consisting of the partitioned table
	and its partitions is still an inheritance hierarchy, all the normal
	rules of inheritance apply as described in Section 5.10, with a few exceptions:

but it doesn't make it clear that tableoid, which is mentioned in
Section 5.10 also works, so here is a patch to add a mention of
tableoid.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  If only the physical world exists, free will is an illusion.


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diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index 7701d8000f..e0ffb020bf 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4105,7 +4105,8 @@ ALTER INDEX measurement_city_id_logdate_key
 
     <para>
      Since a partition hierarchy consisting of the partitioned table and its
-     partitions is still an inheritance hierarchy, all the normal rules of
+     partitions is still an inheritance hierarchy,
+     <structfield>tableoid</structfield> and all the normal rules of
      inheritance apply as described in <xref linkend="ddl-inherit"/>, with
      a few exceptions:
 

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