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Practically everybody who's ever added a column to one of the bootstrap catalogs has been burnt by the need to update the relnatts field in the initial pg_class data to match. Now that we use Perl scripts to generate postgres.bki, we can have the machines take care of that, by filling the field during genbki.pl. While at it, use the BKI_DEFAULTS mechanism to eliminate repetitive specifications of other column values in pg_class.dat, too. They weren't particularly a maintenance problem, but this way is prettier (certainly the spotty previous usage of BKI_DEFAULTS wasn't pretty). No catversion bump needed, since this doesn't actually change the contents of postgres.bki. Per gripe from Justin Pryzby, though this is quite different from his originally proposed solution. Amit Langote, John Naylor, Tom Lane Discussion: https://postgr.es/m/20200212182337.GZ1412@telsasoft.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/.