Andrew Dunstan <andrew.dunstan@2ndquadrant.com> writes:
> On 06/18/2018 06:12 PM, Tom Lane wrote:
>> Anyway, if we do it with a GUC, the user can control the scope of
>> the effects.
> Yeah, but Peter makes the case that people want it for global
> experimentation. "We think we can safely drop this humungous index that
> would take us days to rebuild, but before we do let's make it invisible
> and run for a few days just to make sure." I guess we could do that with
> a GUC, but it seems ugly.
I find it hard to believe that it's uglier than what you suggested...
and it also does more, and is easier to implement.
regards, tom lane