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Most errors reported in extended statistics are internal issues, and so should use elog(). The MCV list code was already following this rule, but the functional dependencies and ndistinct coefficients were using a mix of elog() and ereport(). Fix this by changing most places to elog(), with the exception of input functions. This is a mostly cosmetic change, it makes the life a little bit easier for translators, as elog() messages are not translated. So backpatch to PostgreSQL 10, where extended statistics were introduced. Author: Tomas Vondra Backpatch-through: 10 where extended statistics were added Discussion: https://postgr.es/m/20190503154404.GA7478@alvherre.pgsql
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/.