A sub-patch extracted from the bigger patch in thread "SQL-standard
function body"[0]: Make LANGUAGE SQL the default in CREATE FUNCTION and
CREATE PROCEDURE, per SQL standard.
[0]:
https://www.postgresql.org/message-id/flat/1c11f1eb-f00c-43b7-799d-2d44132c02d7(at)2ndquadrant(dot)com
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Peter Eisentraut http://www.2ndQuadrant.com/
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