Package org.apache.druid.query.groupby.epinephelinae

Interface GroupingSelector

All Known Subinterfaces:
GroupByVectorColumnSelector
All Known Implementing Classes:
DictionaryBuildingSingleValueStringGroupByVectorColumnSelector, DoubleGroupByVectorColumnSelector, ExpressionDeferredGroupByVectorColumnSelector, FloatGroupByVectorColumnSelector, GroupByColumnSelectorPlus, LongGroupByVectorColumnSelector, NilGroupByVectorColumnSelector, NullableDoubleGroupByVectorColumnSelector, NullableFloatGroupByVectorColumnSelector, NullableLongGroupByVectorColumnSelector, SingleValueStringGroupByVectorColumnSelector
public interface GroupingSelector

  • Method Summary

    Modifier and Type
    Method
    Description
    default int
    getValueCardinality()
    Returns the value cardinality if it is known (such as when backed by a DimensionDictionarySelector).