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Formerly, these were only supported in to_char(), but there seems little reason for that restriction. We should at least have enough support to permit round-tripping the output of to_char(). In that spirit, TZ accepts either zone abbreviations or numeric (HH or HH:MM) offsets, which are the cases that to_char() can output. In an ideal world we'd make it take full zone names too, but that seems like it'd introduce an unreasonable amount of ambiguity, since the rules for POSIX-spec zone names are so lax. OF is a subset of this, accepting only HH or HH:MM. One small benefit of this improvement is that we can simplify jsonpath's executeDateTimeMethod function, which no longer needs to consider the HH and HH:MM cases separately. Moreover, letting it accept zone abbreviations means it will accept "Z" to mean UTC, which is emitted by JSON.stringify() for example. Patch by me, reviewed by Aleksander Alekseev and Daniel Gustafsson Discussion: https://postgr.es/m/1681086.1686673242@sss.pgh.pa.us |
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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/.