mirror of
https://github.com/postgres/postgres.git
synced 2025-07-24 14:22:24 +03:00
c120550edb
If there are no indexes on a relation, items can be marked LP_UNUSED instead of LP_DEAD when pruning. This significantly reduces WAL volume, since we no longer need to emit one WAL record for pruning and a second to change the LP_DEAD line pointers thus created to LP_UNUSED. Melanie Plageman, reviewed by Andres Freund, Peter Geoghegan, and me Discussion: https://postgr.es/m/CAAKRu_bgvb_k0gKOXWzNKWHt560R0smrGe3E8zewKPs8fiMKkw%40mail.gmail.com
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/.