From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Jesper Pedersen <jesper.pedersen@redhat.com>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #15587: Partitions with ALTER TABLE ADD CONSTRAINT
Date: Tue, 15 Jan 2019 15:24:57 -0300
Message-ID: <201901151824.mxkelqcnfeq6@alvherre.pgsql> (raw)
In-Reply-To: <3e406e7f-b3df-7f9d-fcf3-1201f3c87903@redhat.com>
On 2019-Jan-10, Jesper Pedersen wrote:
> On 1/10/19 12:11 PM, Alvaro Herrera wrote:
> > On 2019-Jan-10, PG Bug reporting form wrote:
> > > Removing ONLY from the ALTER command makes the index correct.
> >
> > I'm not clear what problem you're reporting. If you use ONLY, then the
> > command doesn't cascade to create the index on partitions, and the index
> > is marked invalid. If you add the constraint to each partition and
> > ALTER INDEX ATTACH PARTITION, the index on t1 should become valid when
> > every partition of the table has its index.
>
> However, when you use ADD CONSTRAINT FOREIGN KEY you can't use ONLY, so
> would it be a good idea to make ADD CONSTRAINT UNIQUE behave the same way,
> i.e. error out ?
I haven't investigated this angle. It seems more complex than just a
simple bugfix, right?
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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To: pgsql-bugs@postgresql.org
Cc: alvherre@2ndquadrant.com, jesper.pedersen@redhat.com, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #15587: Partitions with ALTER TABLE ADD CONSTRAINT
In-Reply-To: <201901151824.mxkelqcnfeq6@alvherre.pgsql>
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