Teodor Sigaev <teodor@sigaev.ru> writes:
>> 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.
Yeah, but it might come back someday, so I didn't feel a need to change
that sentence...
regards, tom lane