richardstartin opened a new issue, #8607:
URL: https://github.com/apache/pinot/issues/8607
I have a query as follows:
```sql
select count(*) from githubEvents where dateTrunc('YEAR', event_time) =
'2016-01-01 00:00:00.0'
```
It produces a nonzero result:
| count(*) |
|--|
|323650488|
However, when I try an explain plan:
```sql
explain plan for select count(*) from githubEvents where dateTrunc('YEAR',
event_time) = '2016-01-01 00:00:00.0'
```
The query plan picks a segment at random which should have been pruned, and
doesn't reflect the way the query is evaluated:
Operator | Operator_Id | Parent_Id
-- | -- | --
BROKER_REDUCE(limit:10) | 0 | -1
COMBINE_AGGREGATE | 1 | 0
FAST_FILTERED_COUNT | 2 | 1
FILTER_EMPTY | 3 | 2
It would be helpful if the plan chose a segment which has data, or queried
all segments and merged operators when the operator varies according to segment.
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