Re: [COMMITTERS] pgsql-server/ oc/src/sgml/runtime.sgml rc/back ...

Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Tom, do we really want to add a GUC that is used just for comparison of
> performance?  I know we have the seqscan on/off, but there are valid
> reasons to do that.  Do you think there will be cases where it will
> faster to have this hash setting off?

Sure --- that's why the planner code is going to great lengths to try to
choose the faster one.  Even if I didn't think that, it'll be at least
as useful as, say, enable_indexscan.
        regards, tom lane