This section contains reference documentation for the DISTINCTCOUNTBITMAPMV function.
Returns the count of distinct row values in a group. This function is accurate for INT or dictionary encoded column, but approximate for other cases where hash codes are used in distinct counting and there may be hash collision.
Signature
DISTINCTCOUNTBITMAPMV(colName)
Usage Examples
These examples are based on the .
value
value
select DISTINCTCOUNTBITMAPMV(DivLongestGTimes) AS value
from airlineStats
where arraylength(DivLongestGTimes) > 1