public static class RolapAggregator.SumFromAvg extends RolapAggregator.BaseAggor
sum == sum(column_avg * factcount)If the fact table has both a sum and average over the same column and the aggregate table only has an average and fact count column, then the sum aggregator can be generated using this aggregator.
Avg, Count, DistinctCount, enumeration, Max, Min, Sum
|Constructor and Description|
|Modifier and Type||Method and Description|
Returns the expression to apply this aggregator to an operand.
aggregate, getNonDistinctAggregator, getRollup, isDistinct, supportsFastAggregates
equals, getDescription, getName, getOrdinal, toString, unexpected