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Previously, pg_upgrade checked that the old and new clusters were compatible, including the locale and encoding. But the new cluster was just created, and only template0 from the new cluster will be preserved (template1 and postgres are both recreated during the upgrade process). Because template0 is not sensitive to locale or encoding, just update the pg_database entry to be the same as template0 from the original cluster. This commit makes it easier to change the default initdb locale or encoding settings without causing needless incompatibilities. Discussion: https://postgr.es/m/d62b2874-729b-d26a-2d0a-0d64f509eca4@enterprisedb.com Reviewed-by: Peter Eisentraut
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/.