On Thu, Dec 10, 2020 at 7:31 PM Andy Fan wrote:
>
>
> On Mon, Dec 7, 2020 at 8:26 PM Andy Fan wrote:
>
>> Hi:
>> I see initscan calls RelationGetwNumberOfBlocks every time and rescan
>> calls
>> initscan as well. In my system, RelationGetNumberOfBlocks is expensive
>> (the reason
>> doesn't d
On Mon, Dec 7, 2020 at 8:26 PM Andy Fan wrote:
> Hi:
> I see initscan calls RelationGetwNumberOfBlocks every time and rescan
> calls
> initscan as well. In my system, RelationGetNumberOfBlocks is expensive
> (the reason
> doesn't deserve a talk.. ), so in a nest loop + Bitmap heap scan case,
