> Note that a bitmap scan or multi-pass indexscan (OR clause scan) has NIL
> pathkeys since we can say nothing about the overall order of its result.
It's seems to me that multi-pass indexscan was removed after introducing bitmapscan.
--
Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/