Re: index-only scans

Robert Haas <robertmhaas@gmail.com> writes:
> Please find attached a patch implementing a basic version of
> index-only scans.

I'm making some progress with this, but I notice what seems like a
missing feature: there needs to be a way to turn it off.  Otherwise
performance comparisons will be difficult to impossible.

The most obvious solution is a planner control GUC, perhaps
"enable_indexonlyscan".  Anyone object, or want to bikeshed the name?
        regards, tom lane