org.apache.flink.table.runtime.functions.aggregate

Class BatchApproxCountDistinctAggFunctions.LongApproxCountDistinctAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.ImperativeAggregateFunction<T,ACC>

org.apache.flink.table.functions.AggregateFunction<T,ACC>

org.apache.flink.table.runtime.functions.aggregate.BuiltInAggregateFunction<Long,HllBuffer>

org.apache.flink.table.runtime.functions.aggregate.BatchApproxCountDistinctAggFunctions.ApproxCountDistinctAggFunction<Long>

org.apache.flink.table.runtime.functions.aggregate.BatchApproxCountDistinctAggFunctions.LongApproxCountDistinctAggFunction

All Implemented Interfaces:

Serializable, FunctionDefinition

Enclosing class:

BatchApproxCountDistinctAggFunctions

public static class BatchApproxCountDistinctAggFunctions.LongApproxCountDistinctAggFunction
extends BatchApproxCountDistinctAggFunctions.ApproxCountDistinctAggFunction<Long>

Built-in long APPROX_COUNT_DISTINCT aggregate function.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LongApproxCountDistinctAggFunction()

Method Summary

Methods inherited from class org.apache.flink.table.runtime.functions.aggregate.BatchApproxCountDistinctAggFunctions.ApproxCountDistinctAggFunction

accumulate, createAccumulator, getAccumulatorDataType, getArgumentDataTypes, getOutputDataType, getValue, merge, resetAccumulator

Methods inherited from class org.apache.flink.table.runtime.functions.aggregate.BuiltInAggregateFunction

getRequirements, getTypeInference, isDeterministic

Methods inherited from class org.apache.flink.table.functions.AggregateFunction

getKind

Methods inherited from class org.apache.flink.table.functions.ImperativeAggregateFunction

getAccumulatorType, getResultType

Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction

close, functionIdentifier, open, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition

supportsConstantFolding

Constructor Detail

LongApproxCountDistinctAggFunction

public LongApproxCountDistinctAggFunction()