5e59290402
pg_class.relchecks reports the number of CHECK constraints in a table, and is stored within a smallint. It was possible to define a table that could overflow the counter when specifying more than 32k constraints (new table or adding a constraint). This would cause the table to become undroppable, as this counter should never be negative when dropping these constraints. Author: Matthias van de Meent <boekewurm+postgres@gmail.com> Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com> Reviewed-by: Jian He <jian.universality@gmail.com> Reviewed-by: Sivaprasad <sivaprasad.postgres@gmail.com> Discussion: https://postgr.es/m/CAEze2WjSW4qaHYnvkTtbknp85eGEirGJTLMZatotdJJKiA+_hA@mail.gmail.com Backpatch-through: 14
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/.