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]
WWW: http://www.sigaev.ru/
---------------------------(end of broadcast)---------------------------
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
match
