Simon Riggs <[EMAIL PROTECTED]> writes:
> Thinks: Why not just sort all of the time and skip the debate entirely?

The sort is demonstrably a loser for smaller indexes.  Admittedly,
if the index is small then the sort can't cost all that much, but if
the (correct) threshold is some large fraction of shared_buffers then
it could still take awhile on installations with lots-o-buffers.

The other side of that coin is that it's not clear this is really worth
arguing about, much less exposing a separate parameter for.

                        regards, tom lane

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