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.
Yeah, but it might come back someday, so I didn't feel a need to change
that sentence...

Hmm. Our OR patch makes the same possibility by using Append node - without
reintroducing multi-pass indexscan. Moreover, it allows to sort OR clauses to match sort order.

Teodor Sigaev                                   E-mail: [EMAIL PROTECTED]

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TIP 9: In versions below 8.0, the planner will ignore your desire to
      choose an index scan if your joining column's datatypes do not

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