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When MERGE/SPLIT created new partitions, it was cloning the extended statistics of the parent table. However, extended stats on partitioned tables don't behave like indexes on partitioned tables (which exist only to create physical indexes on child tables). Rather, extended stats on a parent 1) cause extended stats to be collected and computed across the whole partition hierarchy, and 2) do not cause extended stats to be computed for the individual partitions. "CREATE TABLE ... PARTITION OF" command doesn't copy extended statistics. This commit makes createPartitionTable() behave consistently. Reported-by: Justin Pryzby Discussion: https://postgr.es/m/ZiJW1g2nbQs9ekwK%40pryzbyj2023 Author: Alexander Korotkov, Justin Pryzby
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/.