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

类 BatchApproxCountDistinctAggFunctions.DoubleApproxCountDistinctAggFunction

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<Double>

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

所有已实现的接口:

Serializable, org.apache.flink.table.functions.FunctionDefinition

封闭类:

BatchApproxCountDistinctAggFunctions

public static class BatchApproxCountDistinctAggFunctions.DoubleApproxCountDistinctAggFunction
extends BatchApproxCountDistinctAggFunctions.ApproxCountDistinctAggFunction<Double>

Built-in double APPROX_COUNT_DISTINCT aggregate function.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
DoubleApproxCountDistinctAggFunction()

方法概要

从类继承的方法 org.apache.flink.table.runtime.functions.aggregate.BatchApproxCountDistinctAggFunctions.ApproxCountDistinctAggFunction

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

从类继承的方法 org.apache.flink.table.runtime.functions.aggregate.BuiltInAggregateFunction

getRequirements, getTypeInference, isDeterministic

从类继承的方法 org.apache.flink.table.functions.AggregateFunction

getKind

从类继承的方法 org.apache.flink.table.functions.ImperativeAggregateFunction

getAccumulatorType, getResultType

从类继承的方法 org.apache.flink.table.functions.UserDefinedFunction

close, functionIdentifier, open, toString

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.functions.FunctionDefinition

supportsConstantFolding

构造器详细资料

DoubleApproxCountDistinctAggFunction

public DoubleApproxCountDistinctAggFunction()