egor-ryashin commented on issue #16728:
URL: https://github.com/apache/druid/issues/16728#issuecomment-2228989755
I added cardinality by grouping additional dimensions - now it looks like
this:
```
select "camp", "buyer" , "source" ,
sum(cnt) filter (where __time >= '2024-06-01' and __time < '2024-06-07') p,
sum(cnt) filter (where __time >= '2024-06-07' and __time < '2024-06-14') n,
sum(cnt) filter (where __time >= '2024-06-07' and __time < '2024-06-14') -
sum(cnt) filter (where __time >= '2024-06-01' and __time < '2024-06-07') delta
from atd_pba
where __time >= '2024-06-01' and __time < '2024-06-14'
group by 1,2,3
order by delta
limit 10
```
```
select p."camp", p. "buyer" ,p. "source",any_value(p.c), any_value(n.c),
any_value(n.c- p.c ) delta from (
select "camp", "buyer" , "source" , sum(cnt) c from atd_pba where
__time >= '2024-06-01' and __time < '2024-06-07' group by 1,2,3
) p
left join
(
select "camp", "buyer" , "source" , sum(cnt) c from atd_pba where __time
>= '2024-06-07' and __time < '2024-06-14' group by 1,2,3
) n
on p.camp is not distinct from n.camp and p.buyer is not distinct from
n.buyer and p.source is not distinct from n.source
group by 1,2,3
order by delta
limit 10
```
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