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BuildDescForRelation() main job is to convert ColumnDef lists to pg_attribute/tuple descriptor arrays, which is really mostly an internal subroutine of DefineRelation() and some related functions, which is more the remit of tablecmds.c and doesn't have much to do with the basic tuple descriptor interfaces in tupdesc.c. This is also supported by observing the header includes we can remove in tupdesc.c. By moving it over, we can also (in the future) make BuildDescForRelation() use more internals of tablecmds.c that are not sensible to be exposed in tupdesc.c. Discussion: https://www.postgresql.org/message-id/flat/52a125e4-ff9a-95f5-9f61-b87cf447e4da@eisentraut.org
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/.