e0ece2a981
Previously, the caller needed to allocate the memory and the TupleHashTable would store a pointer to it. That wastes space for the palloc overhead as well as the size of the pointer itself. Now, the TupleHashTable relies on the caller to correctly specify the additionalsize, and allocates that amount of space. The caller can then request a pointer into that space. Discussion: https://postgr.es/m/b9cbf0219a9859dc8d240311643ff4362fd9602c.camel@j-davis.com Reviewed-by: Heikki Linnakangas
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/.