hi,
no noticed after the assignment with union (
https://www.postgresql.org/message-id/flat/20210105201257.f0d76aff%40mail.verfriemelt.org), that the assignment with
distinctis broken aswell.
DO $$
DECLARE
_test bool;
BEGIN
_test := DISTINCT a FROM ( VALUES ( (true), ( true ) ) )t(a);
END $$;
i would argue, that thats a way more common usecase than the union, which was merely bad code.
tested with version 14~~devel~20210111.0540-1~299.gitce6a71f.pgdg110+1 from the apt repo
with kind redards,
richard