On 01/13/2016 11:38 AM, Karsten Hilbert wrote:
Please consider the following:
- Debian
- server is PG 9.4.5
- client (psql/pg_dump/libpq5) is 9.5
create table parent (
not_null_in_parent integer not null
);
create table child() inherits (parent);
alter table child
alter column not_null_in_parent
drop not null
;
--------------------------------------------------
Is this a bug or am I doing things I shouldn't hope work ?
The latter if I am following the below correctly:
http://www.postgresql.org/docs/9.5/static/ddl-inherit.html
"All check constraints and not-null constraints on a parent table are
automatically inherited by its children. Other types of constraints
(unique, primary key, and foreign key constraints) are not inherited."
I noticed this during a recent 9.4 -> 9.5 pg_upgradecluster
attempt with actual data in "child" violating-upon-restore
the newly created NOT NULL constraint on "child" when COPYing.
Thanks,
Karsten
--
Adrian Klaver
adrian.kla...@aklaver.com
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