Package io.prestosql.operator.aggregation.histogram
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Interface Summary Interface Description HistogramState HistogramValueReader TypedHistogram -
Class Summary Class Description GroupedHistogramState state object that uses a single histogram for all groups.GroupedTypedHistogram implementation that uses groupId in the hash key, so that we may store all groupId x value -> count in one giant map.HashUtil Histogram HistogramStateFactory HistogramStateSerializer SingleHistogramState SingleTypedHistogram ValueStore helper class forGroupedTypedHistogramMay be used for other cases that need a simple hash for values