Heikki Linnakangas <[EMAIL PROTECTED]> writes:
> The patch also adds support for candidate matches. An index scan can 
> indicate that the tuples it's returning are candidates, and the executor 
> will recheck the original scan quals of any candidate matches when the 
> tuple is fetched from heap.

This will not work, unless we change the planner --- the original quals
aren't necessarily there in some corner cases (partial indexes, if
memory serves).

> The motivation for adding the support for candidate matches is that GIT 
> / clustered indexes need it.

You need more than a vague reference to an unapplied patch to convince
me we ought to do this.

                        regards, tom lane

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