28972b6fc3
Add a new FDW callback routine that allows importing remote statistics for a foreign table directly to the local server, instead of collecting statistics locally. The new callback routine is called at the beginning of the ANALYZE operation on the table, and if the FDW failed to import the statistics, the existing callback routine is called on the table to collect statistics locally. Also implement this for postgres_fdw. It is enabled by "restore_stats" option both at the server and table level. Currently, it is the user's responsibility to ensure remote statistics to import are up-to-date, so the default is false. Author: Corey Huinker <corey.huinker@gmail.com> Co-authored-by: Etsuro Fujita <etsuro.fujita@gmail.com> Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com> Reviewed-by: Matheus Alcantara <matheusssilv97@gmail.com> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Etsuro Fujita <etsuro.fujita@gmail.com> Discussion: https://postgr.es/m/CADkLM%3DchrYAx%3DX2KUcDRST4RLaRLivYDohZrkW4LLBa0iBhb5w%40mail.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/.