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SQL Standard 2016 defines rules for handling separators in datetime template strings, which are different to to_date()/to_timestamp() rules. Standard allows only small set of separators and requires strict matching for them. Standard applies to jsonpath .datetime() method and CAST (... FORMAT ...) SQL clause. We're not going to change handling of separators in existing to_date()/to_timestamp() functions, because their current behavior is familiar for users. Standard behavior now available by special flag, which will be used in upcoming .datetime() jsonpath method. Discussion: https://postgr.es/m/CAPpHfdsZgYEra_PeCLGNoXOWYx6iU-S3wF8aX0ObQUcZU%2B4XTw%40mail.gmail.com Author: Alexander Korotkov
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/.