a681e3c107
Commit a1c649d889 changed the signature of the BRIN consistent function by adding a new required parameter. Treating the parameter as optional, which would make the change backwards incompatibile, was rejected with the justification that there are few out-of-core extensions, so it's not worth adding making the code more complex, and it's better to deal with that in the extension. But after further thought, that would be rather problematic, because pg_upgrade simply dumps catalog contents and the same version of an extension needs to work on both PostgreSQL versions. Supporting both variants of the consistent function (with 3 or 4 arguments) makes that possible. The signature is not the only thing that changed, as commit 72ccf55cb9 moved handling of IS [NOT] NULL keys from the support procedures. But this change is backward compatible - handling the keys in exension is unnecessary, but harmless. The consistent function will do a bit of unnecessary work, but it should be very cheap. This also undoes most of the changes to the existing opclasses (minmax and inclusion), making them use the old signature again. This should make backpatching simpler. Catversion bump, because of changes in pg_amproc. Author: Tomas Vondra <tomas.vondra@postgresql.org> Author: Nikita Glukhov <n.gluhov@postgrespro.ru> Reviewed-by: Mark Dilger <hornschnorter@gmail.com> Reviewed-by: Alexander Korotkov <aekorotkov@gmail.com> Reviewed-by: Masahiko Sawada <masahiko.sawada@enterprisedb.com> Reviewed-by: John Naylor <john.naylor@enterprisedb.com> Discussion: https://postgr.es/m/c1138ead-7668-f0e1-0638-c3be3237e812@2ndquadrant.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. 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/.