Comments on: Waiting for 8.5 – Have \d show child tables that inherit from the specified parent

By: Scott C.

Scott C. — Mon, 10 May 2010 06:28:29 +0000

@Robert

Yup, I’ll have to remember not to use \d+ on my parent tables with ~7500 children.

By: Robert Treat

Robert Treat — Wed, 08 Jul 2009 18:18:34 +0000

I think the unfortunate thing about this is that it makes \d+ pretty much unusable on parent tables of large partition schemes.

By: David Fetter

David Fetter — Mon, 06 Jul 2009 13:07:02 +0000

@depesz
I’ve seen it in multi-level partitioning schemes. Whether *those* are a good idea is a whole different question.

By: depesz

depesz — Mon, 06 Jul 2009 08:22:08 +0000

@David Fetter:
not sure. I have seen 2 uses for inherited tables so far, and none of them is really useful with multi-level inheritance, but maybe I’m missing some cases.

By: David Fetter

David Fetter — Mon, 06 Jul 2009 01:14:24 +0000

I noticed something when making a deeper hierarchy, namely that it descends just one level. I think this may count as a POLA violation. What do you think?

CREATE TABLE x (id INTEGER);
CREATE TABLE x_01 () inherits (x);
CREATE TABLE x_02 () inherits (x);
CREATE TABLE x_01_01 () inherits (x_01);
CREATE TABLE x_01_02 () inherits (x_01);