Julien Rouhaud <rjuju123@xxxxxxxxx> writes: > On Sun, Feb 20, 2022 at 12:31:22PM +0200, Markur Sens wrote: >> Is this documented & expected behavior or it’s just happens to work? > I don't think it's documented but it's an expected behavior, see > https://github.com/postgres/postgres/blob/master/src/backend/parser/parse_func.c#L57-L88 It is documented, near the bottom of this section: https://www.postgresql.org/docs/current/rowtypes.html#ROWTYPES-USAGE Other relevant oddities are mentioned in https://www.postgresql.org/docs/current/xfunc-sql.html#XFUNC-SQL-COMPOSITE-FUNCTIONS regards, tom lane
