Re: index-only scans

Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Fri, Oct 7, 2011 at 2:40 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> 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?

> I was expecting you to NOT want that, or I would have put it in to
> begin with... so go for it.

It seems unlikely to have any use except for testing, but I think we
need it for that.

regards, tom lane