d16be8605f
Update the table inheritance documentation to mention not-null constraints alongside check constraints where inherited constraints are discussed. Also clarify that some properties of inherited constraints can now be altered directly on child tables, while the resulting constraint must remain compatible with its inherited parent constraints. For multiple inheritance, say explicitly that when a column or constraint is inherited from more than one parent, the stricter definition applies. Author: Chao Li <lic@highgo.com> Reviewed-by: Zsolt Parragi <zsolt.parragi@percona.com> Discussion: https://postgr.es/m/E74C57FA-1DD0-4C8E-8FB1-538034752592@gmail.com |
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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/.