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Re: Column Filtering in Logical Replication

Justin Pryzby <pryzby@telsasoft.com>

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From: Justin Pryzby <pryzby@telsasoft.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Peter Eisentraut <peter.eisentraut@enterprisedb.com>, Tomas Vondra <tomas.vondra@enterprisedb.com>, Amit Kapila <amit.kapila16@gmail.com>, houzj.fnst@fujitsu.com, Rahila Syed <rahilasyed90@gmail.com>, Peter Smith <smithpb2250@gmail.com>, pgsql-hackers@postgresql.org
Date: 2022-01-11T21:10:53Z
Lists: pgsql-hackers 
Is there any coordination between the "column filter" patch and the "row
filter" patch ?  Are they both on track for PG15 ?  Has anybody run them
together ?

Whichever patch is merged 2nd should include tests involving a subset of
columns along with a WHERE clause.

I have a suggestion: for the functions for which both patches are adding
additional argument types, define a filtering structure for both patches to
use.  Similar to what we did for some utility statements in a3dc92600.

I'm referring to:
logicalrep_write_update()
logicalrep_write_tuple()

That would avoid avoid some rebase conflicts on april 9, and avoid functions
with 7,8,9 arguments, and maybe simplify adding arguments in the future.

-- 
Justin

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