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This has been requested a few times, but the use-case for it was never entirely clear. The reason for adding it now is that transmission of error reports from parallel workers fails when NLS is active, because pq_parse_errornotice() wrongly assumes that the existing severity field is nonlocalized. There are other ways we could have fixed that, but the other options were basically kluges, whereas this way provides something that's at least arguably a useful feature along with the bug fix. Per report from Jakob Egger. Back-patch into 9.6, because otherwise parallel query is essentially unusable in non-English locales. The problem exists in 9.5 as well, but we don't want to risk changing on-the-wire behavior in 9.5 (even though the possibility of new error fields is specifically called out in the protocol document). It may be sufficient to leave the issue unfixed in 9.5, given the very limited usefulness of pq_parse_errornotice in that version. Discussion: <A88E0006-13CB-49C6-95CC-1A77D717213C@eggerapps.at>
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.