487cf2cbd2
Add an optional bool *has_volatile output parameter to DomainHasConstraints(). When non-NULL, the function checks whether any CHECK constraint contains a volatile expression. Callers that don't need this information pass NULL and get the same behavior as before. This is needed by a subsequent commit that enables the fast default optimization for domains with non-volatile constraints: we can safely evaluate such constraints once at ALTER TABLE time, but volatile constraints require a full table rewrite. Author: Jian He <jian.universality@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Andrew Dunstan <andrew@dunslane.net> Reviewed-by: Viktor Holmberg <viktor.holmberg@aiven.io> Discussion: https://postgr.es/m/CACJufxE_+iZBR1i49k_AHigppPwLTJi6km8NOsC7FWvKdEmmXg@mail.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/.