Re: doc: improve the restriction description of using indexes on REPLICA IDENTITY FULL table.

Masahiko Sawada <sawada.mshk@gmail.com>

From: Masahiko Sawada <sawada.mshk@gmail.com>
To: Peter Smith <smithpb2250@gmail.com>
Cc: Amit Kapila <amit.kapila16@gmail.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2023-07-13T02:21:34Z
Lists: pgsql-hackers

Attachments

On Thu, Jul 13, 2023 at 11:12 AM Peter Smith <smithpb2250@gmail.com> wrote:
>
> On Thu, Jul 13, 2023 at 11:28 AM Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> >
> > On Thu, Jul 13, 2023 at 8:03 AM Peter Smith <smithpb2250@gmail.com> wrote:
> > >
> > > On Wed, Jul 12, 2023 at 5:01 PM Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> > > >
> > > > On Tue, Jul 11, 2023 at 5:31 PM Peter Smith <smithpb2250@gmail.com> wrote:
> > > > >
> ...
> > >
> > > I checked v5-0001 and noticed the following:
> > >
> > > ======
> > > doc/src/sgml/logical-replication.sgml
> > >
> > > BEFORE
> > > ... and the leftmost index field must be a  column (not an expression)
> > > that reference a published table column.
> > >
> > > SUGGESTION ("references the", instead of "reference a")
> > > ... and the leftmost index field must be a  column (not an expression)
> > > that references the published table column.
> >
> > Thanks, will fix.
> >
> > >
> > > (maybe that last word "column" is also unnecessary?)
> >
> > But an index column doesn't reference the published table, but the
> > published table's column, no?
> >
>
> Yeah, but there is some inconsistency with the other code comment that
> just says "... that references the remote relation.", so I thought one
> of them needs to change. If not this one, then the other one.

Right. So let's add "column" in both places. Attached the updated patch

Regards,

-- 
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com

Commits

  1. Remove unnecessary checks for indexes for REPLICA IDENTITY FULL tables.

  2. Allow the use of a hash index on the subscriber during replication.

  3. Doc: clarify the conditions of usable indexes for REPLICA IDENTITY FULL tables.

  4. Allow the use of indexes other than PK and REPLICA IDENTITY on the subscriber.