1218ca9956
In combination with to_regtype, this allows converting a string to the "canonicalized" form emitted by format_type. That usage requires parsing the string twice, which is slightly annoying but not really too expensive. We considered alternatives such as returning a record type, but that way was notationally uglier than this, and possibly less flexible. Like to_regtype(), we'd rather that this return NULL for any bad input, but the underlying type-parsing logic isn't yet capable of not throwing syntax errors. Adjust the documentation for both functions to point that out. In passing, fix up a couple of nearby entries in the System Catalog Information Functions table that had not gotten the word about our since-v13 convention for displaying function usage examples. David Wheeler and Erik Wienhold, reviewed by Pavel Stehule, Jim Jones, and others. Discussion: https://postgr.es/m/DF2324CA-2673-4ABE-B382-26B5770B6AA3@justatheory.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/.