fd7a25af11
When a tablesync worker checks whether a specific table is published, it previously issued a query to the publisher calling pg_get_publication_tables() and filtering the result by relid via a WHERE clause. Because the function itself was fully evaluated before the filter was applied, this forced the publisher to enumerate all tables in the publication. For publications covering a large number of tables, this resulted in expensive catalog scans and unnecessary CPU overhead on the publisher. This commit adds a new overloaded form of pg_get_publication_tables() that accepts an array of publication names and a target table OID. Instead of enumerating all published tables, it evaluates membership for the specified relation via syscache lookups, using the new is_table_publishable_in_publication() helper. This helper correctly accounts for publish_via_partition_root, ALL TABLES with EXCEPT clauses, schema publications, and partition inheritance, while avoiding the overhead of building the complete published table list. The existing VARIADIC array form of pg_get_publication_tables() is preserved for backward compatibility. Tablesync workers use the new two-argument form when connected to a publisher running PostgreSQL 19 or later. Bump catalog version. Reported-by: Marcos Pegoraro <marcos@f10.com.br> Reviewed-by: Zhijie Hou <houzj.fnst@fujitsu.com> Reviewed-by: Matheus Alcantara <matheusssilv97@gmail.com> Reviewed-by: Amit Kapila <amit.kapila16@gmail.com> Reviewed-by: Peter Smith <smithpb2250@gmail.com> Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Reviewed-by: Haoyan Wang <wanghaoyan20@163.com> Discussion: https://postgr.es/m/CAB-JLwbBFNuASyEnZWP0Tck9uNkthBZqi6WoXNevUT6+mV8XmA@mail.gmail.com |
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PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.