Boszormenyi Zoltan <> writes:
> This applies to anything else that may need to be converted
> from list to tree to decrease planning time. Like ec_members
> in EquivalenceClass.

AFAIR, canonical pathkeys are the *only* thing in the planner where pure
pointer equality is interesting.  So I doubt this hack is of any use for
EquivalenceClass, even if the lists were likely to be long which they

                        regards, tom lane

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