AggregationType specifies the aggregation type.
Enumeration value list
AGG_AVG: average value.
AGG_DISTINCT_COUNT: distinct count of rows.
AGG_MAX: maximum value.
AGG_MIN: minimum value.
AGG_SUM: sum.
AGG_COUNT: count of rows.
AGG_TOP_ROWS: top rows from each group's aggregation results.
AGG_PERCENTILES: percentile statistics.
enum AggregationType {
AGG_AVG = 1;
AGG_DISTINCT_COUNT = 6;
AGG_MAX = 2;
AGG_MIN = 3;
AGG_SUM = 4;
AGG_COUNT = 5;
AGG_TOP_ROWS = 7;
AGG_PERCENTILES = 8;
}