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When a range type is created, several construction functions are also created, two for the range type and three for the multirange type. These have an internal dependency, so they "belong" to the range type. But there was no way to identify those functions when given a range type. An upcoming patch needs access to the two- or possibly the three-argument range constructor function for a given range type. The only way to do that would be with fragile workarounds like matching names and argument types. The correct way to do that kind of thing is to record to the links in the system catalogs. This is what this patch does, it records the OIDs of these five constructor functions in the pg_range catalog. (Currently, there is no code that makes use of this.) Reviewed-by: Paul A Jungwirth <pj@illuminatedcomputing.com> Reviewed-by: Kirill Reshke <reshkekirill@gmail.com> Discussion: https://www.postgresql.org/message-id/7d63ddfa-c735-4dfe-8c7a-4f1e2a621058%40eisentraut.org
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/.