effb923d9d
When COPY TO with FORMAT json is given an explicit column list that names all columns in a different order, the JSON output incorrectly used the table's physical column order instead of the requested order. This happened because BeginCopyTo() only built a restricted TupleDesc when list_length(attnumlist) < tupDesc->natts. When all columns are listed (just reordered), this condition was false and no projected TupleDesc was built, causing CopyToJsonOneRow() to emit columns in physical order. Fix by also building the projected TupleDesc when an explicit column list was provided (attnamelist != NIL), even if it names all columns. Author: Baji Shaik <baji.pgdev@gmail.com> Reviewed-by: Andrew Dunstan <andrew@dunslane.net> Discussion: https://postgr.es/m/CA+fm-ROd4cNKM524n6EdgtZ9xOzOHJDNv8J_9Mvr2+2t1qWSDw@mail.gmail.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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.