It's true - otherwise the space couldn't freely be reused, because the gaps for the vacuumed tuples wouldn't allow for any larger tuples to be inserted. See ht

It's true - otherwise the space couldn't freely be reused, because the gaps for the vacuumed tuples wouldn't allow for any larger tuples to be inserted. See https://github.com/postgres/postgres/blob/b853e644d78d99ef1779c9bf7bc3944694460aa2/src/backend/storage/page/bufpage.c#L682 https://github.com/postgres/postgres/blob/b853e644d78d99ef17...