Computes an aggregate over an array of numeric values, ignoring nulls. If all values are null/undefined/NaN, returns null.
NOTE: For 'count' aggregation, this returns the count of non-null values for the measure column in this group (matching SQL COUNT(column) semantics).
Computes an aggregate over an array of numeric values, ignoring nulls. If all values are null/undefined/NaN, returns null.
NOTE: For 'count' aggregation, this returns the count of non-null values for the measure column in this group (matching SQL COUNT(column) semantics).