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Those extra queries are not necessary when doing a data-only dump. With this change, this means that the dependencies between CHECK/DEFAULT and the parent table are not tracked anymore for a data-only dump. However, these dependencies are only used for the schema generation and we have never guaranteed that a dump can be reloaded if a CHECK constraint uses a custom function whose behavior changes when loading the data, like when using cross-table references in the CHECK function. Author: Julien Rouhaud Reviewed-by: Daniel Gustafsson, Michael Paquier Discussion: https://postgr.es/m/20200712054850.GA92357@nol
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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.