Re: BUG #14325: backup restore inherited constraint

On Fri, Sep 16, 2016 at 3:27 PM,  <vbv256@yandex.ru> wrote:
> If child table has field with removed inherit constraint.
> In dump file this constraint not removed and data not restored correctly.
> Problem also exist in PostgreSQL 9.1. Before this version appropriate
> construction not used by me.
>
> -- --- to reproduce problem ----------
> bash$ psql template1
> template1=# create database test;
> template1=# \c test
>
> [... test ...]

What we ought to do here is forbid DROP NOT NULL on the table test.
See here for example:
https://www.postgresql.org/message-id/21633.1448383428@sss.pgh.pa.us
So this is a known limiration, and there have been some discussions
about removing this limitation in the backend, like here:
https://www.postgresql.org/message-id/CAKOSWNkN6HSyatuys8xZxzRCR-KL1OkHS5-b9qd9bf1Rad3PLA@mail.gmail.com
But there is no concrete patch lately. I don't think it would be
*that* complicated to get a rebased and polished version of what has
been proposed. It just needs care and time.

> Sorry for my bad english.

I think that's fine! And I am no native speaker either.
--
Michael