0a0a0f2c59
It used to refer to CREATE DOMAIN, but CREATE DOMAIN allows NULL, while ALTER DOMAIN does not. Reported-by: elionescu@yahoo.com Discussion: https://postgr.es/m/172225092461.915373.6103973717483380183@wrigleys.postgresql.org Backpatch-through: 12
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/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/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/.