I have noticed $subj while working with other unrelated patches. The question is, why there is no CREATE TABLE AS .... USING (some_access_method)? This feature looks straightforward, and lack of it is a bit of inconsistency from my point of view. Maybe there are some unobvious caveats with implementing it? I have done a little research reading related threads [1][2], but these do not address $subj, if i'm not missing anything. Neither can I find an open CF entry/thread implementing this (Im looking here http://cfbot.cputube.org/) .
The same storage specification feature can actually be supported for CTAE (like CTAS but execute) and CREATE MATERIALIZED VIEW. I can try to propose a POC patch implementing $subj if there are no objections to having this functionality in the core. [1] https://www.postgresql.org/message-id/flat/20180703070645.wchpu5muyto5n647%40alap3.anarazel.de [2] https://www.postgresql.org/message-id/flat/20160812231527.GA690404%40alvherre.pgsql
