Hi Tender I think `root` argument was introduced in [1] to do an assertion, but that assertion was removed shortly after being added. `from` and `to` on the other hand were introduced in [2], but weren't used from the start.
LGTM! [1] https://www.postgresql.org/message-id/CAKJS1f8cJOCGyoxi7a_LG7eu%2BWKF9%2BHTff3wp1KKS5gcUg2Qfg%40mail.gmail.com [2] https://www.postgresql.org/message-id/c97574c4-13e6-9107-26ab-af2bd626fc85%40postgrespro.ru Kind regards, Miłosz Bieniek
