[Since this is Drill specific, I put dev@calcite on BCC].
If you have two aggregates: Count(distinct a), Count(distinct b), the
Calcite logical plan consists of a cartesian join of 2 subqueries each of
which first does a group-by on the distinct column followed by a count
aggregate. By default,
HI all:
I materialize the count distinct query result to a cache, then when user
query the count distinct , a specific rule will translate the query to the
cache. It turns out right when the query has only one count (distinct )
operator ,but when it has two count (distinct ) ,it causes error
