Re: row filtering for logical replication

vignesh C <vignesh21@gmail.com>

From: vignesh C <vignesh21@gmail.com>
To: Ajin Cherian <itsajin@gmail.com>
Cc: Amit Kapila <amit.kapila16@gmail.com>, "houzj.fnst@fujitsu.com" <houzj.fnst@fujitsu.com>, Peter Smith <smithpb2250@gmail.com>, Greg Nancarrow <gregn4422@gmail.com>, "tanghy.fnst@fujitsu.com" <tanghy.fnst@fujitsu.com>, Dilip Kumar <dilipbalaut@gmail.com>, Euler Taveira <euler@eulerto.com>, Rahila Syed <rahilasyed90@gmail.com>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>, Önder Kalacı <onderkalaci@gmail.com>, japin <japinli@hotmail.com>, Michael Paquier <michael@paquier.xyz>, David Steele <david@pgmasters.net>, Craig Ringer <craig@2ndquadrant.com>, Amit Langote <amitlangote09@gmail.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2021-11-23T16:37:43Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  1. Release cache tuple when no longer needed

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

  3. Fix one of the tests introduced in commit 52e4f0cd47.

  4. Allow specifying row filters for logical replication of tables.

  5. Move scanint8() to numutils.c

  6. Replace Test::More plans with done_testing

  7. Reduce relcache access in WAL sender streaming logical changes

  8. Small cleanups related to PUBLICATION framework code

  9. Add a view to show the stats of subscription workers.

  10. Allow publishing the tables of schema.

  11. Doc: improve documentation of CREATE/ALTER SUBSCRIPTION.

  12. Add PublicationTable and PublicationRelInfo structs

  13. Remove unused argument "txn" in maybe_send_schema().

  14. Add prepare API support for streaming transactions in logical replication.

  15. Unify PostgresNode's new() and get_new_node() methods

  16. Use l*_node() family of functions where appropriate

  17. Add support for prepared transactions to built-in logical replication.

  18. Restore the portal-level snapshot after procedure COMMIT/ROLLBACK.

  19. Rename a parse node to be more general

  20. Remove unused column atttypmod from initial tablesync query

  21. SEARCH and CYCLE clauses

On Tue, Nov 23, 2021 at 4:58 PM Ajin Cherian <itsajin@gmail.com> wrote:
>
> Attaching a new patchset v41 which includes changes by both Peter and myself.

Few comments on v41-0002 patch:
1) Tab completion should be handled for completion of "WITH(" in
"create publication pub1 for table t1 where (c1 > 10)":
@@ -2757,10 +2765,13 @@ psql_completion(const char *text, int start, int end)
        else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR",
"ALL", "TABLES"))
                COMPLETE_WITH("IN SCHEMA", "WITH (");
        else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR",
"TABLE", MatchAny))
-               COMPLETE_WITH("WITH (");
+               COMPLETE_WITH("WHERE (", "WITH (");
        /* Complete "CREATE PUBLICATION <name> FOR TABLE" with "<table>, ..." */
        else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLE"))
                COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
+       /* "CREATE PUBLICATION <name> FOR TABLE <name> WHERE (" -
complete with table attributes */
+       else if (HeadMatches("CREATE", "PUBLICATION", MatchAny) &&
TailMatches("WHERE", "("))
+               COMPLETE_WITH_ATTR(prev3_wd, "");

2) Tab completion completes with "WHERE (" in case of "alter
publication pub1 add table t1,":
+       /* ALTER PUBLICATION <name> SET TABLE <name> */
+       /* ALTER PUBLICATION <name> ADD TABLE <name> */
+       else if (Matches("ALTER", "PUBLICATION", MatchAny, "SET|ADD",
"TABLE", MatchAny))
+               COMPLETE_WITH("WHERE (");

Should this be changed to:
+       /* ALTER PUBLICATION <name> SET TABLE <name> */
+       /* ALTER PUBLICATION <name> ADD TABLE <name> */
+       else if (Matches("ALTER", "PUBLICATION", MatchAny, "SET|ADD",
"TABLE", MatchAny) && (!ends_with(prev_wd, ','))
+               COMPLETE_WITH("WHERE (");

Regards,
Vignesh