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Re: Column Filtering in Logical Replication

Amit Kapila <amit.kapila16@gmail.com>

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From: Amit Kapila <amit.kapila16@gmail.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Rahila Syed <rahilasyed90@gmail.com>, Tomas Vondra <tomas.vondra@enterprisedb.com>, Peter Smith <smithpb2250@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2021-09-15T03:34:21Z
Lists: pgsql-hackers 
On Mon, Sep 6, 2021 at 11:21 PM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
>
> I pushed the clerical part of this -- namely the addition of
> PublicationTable node and PublicationRelInfo struct.
>

One point to note here is that we are developing a generic grammar for
publications where not only tables but other objects like schema,
sequences, etc. can be specified, see [1]. So, there is some overlap
in the grammar modifications being made by this patch and the work
being done in that other thread. As both the patches are being
developed at the same time, it might be better to be in sync,
otherwise, some of the work needs to be changed. I can see that in the
patch [2] (v28-0002-Added-schema-level-support-for-publication) being
developed there the changes made by the above commit needs to be
changed again to represent a generic object for publication. It is
possible that we can do it some other way but I think it would be
better to coordinate the work in both threads. The other approach is
to continue independently and the later patch can adapt to the earlier
one which is fine too but it might be more work for the later one.

[1] - https://www.postgresql.org/message-id/877603.1629120678%40sss.pgh.pa.us
[2] - postgresql.org/message-id/CALDaNm0OudeDeFN7bSWPro0hgKx%3D1zPgcNFWnvU_G6w3mDPX0Q%40mail.gmail.com

-- 
With Regards,
Amit Kapila.

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Doc: Explain about Column List feature.

  2. Doc: fix column list vs. replica identity rules.

  3. Prohibit combining publications with different column lists.

  4. Fix the check to limit sync workers.

  5. Wait for subscription to sync in t/031_column_list.sql

  6. Move prattrs to the pg_publication_rel section in docs

  7. Allow specifying column lists for logical replication

  8. Fix row filters with multiple publications

  9. Fix publish_as_relid with multiple publications

  10. Add some additional tests for row filters in logical replication.

  11. Add index on pg_publication_rel.prpubid

  12. Avoid using DefElemAction in AlterPublicationStmt

  13. Small cleanups related to PUBLICATION framework code

  14. Add PublicationTable and PublicationRelInfo structs

  15. Fix various concurrency issues in logical replication worker launching