Обсуждение: getting table name from partition

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.

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.

On Thu, Jul 29, 2021 at 06:24:17PM -0400, Bruce Momjian wrote:
> 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.

Patch applied back to PG 10, where the partition syntax was added.

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

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