On 04/24/2017 10:55 PM, Jeff Janes wrote:
> On Mon, Apr 24, 2017 at 12:13 PM, Tomas Vondra
> <tomas.vondra@2ndquadrant.com <mailto:tomas.vondra@2ndquadrant.com>> wrote:
>
> On 04/24/2017 08:52 PM, Andres Freund wrote:
>
> ...
>
> I've wanted that too. It's not impossible at all.
>
>
> Why wouldn't that be possible? We probably can't use exactly the
> same approach as Hash, because hashjoins use custom hash table while
> hashagg uses dynahash IIRC. But why couldn't measure the amount of
> memory by looking at the memory context, for example?
>
>
> He said "not impossible", meaning it is possible.
>
Ah, the dreaded double negative ...
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
