Does druid support FDT sketches? The datasketch module docs don't list
it.
https://druid.apache.org/docs/latest/development/extensions-core/datasketches-extension.html
On Fri, Jan 7, 2022 at 1:04 AM liupeng_wx <liupeng...@qq.com> wrote:
> hi all:
>
> i have a question at Frequent Distinct Tuples Sketch。 a multiset
> of tuples with N dimensions {d1,d2, d3, …, dN}，FDT could base on any of
> dimensions and approximate count distinct left dimensions。eg: *select
> appromate group by(d1,d2),count distinct {d2,...dn} from sketches group
> by **(d1,d2)*。 is there a way to group any of dimensions and count
> distinct any of left dimensions, eg: *select appromate group
> by(d1,d2),count distinct d3 from sketches group by (d1,d2)*
>
>
>
