org.apache.flink.table.planner.functions.aggfunctions

类 AvgAggFunction.DoubleAvgAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.planner.functions.aggfunctions.DeclarativeAggregateFunction

org.apache.flink.table.planner.functions.aggfunctions.AvgAggFunction

org.apache.flink.table.planner.functions.aggfunctions.AvgAggFunction.DoubleAvgAggFunction

所有已实现的接口:

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

封闭类:

AvgAggFunction

public static class AvgAggFunction.DoubleAvgAggFunction
extends AvgAggFunction

Built-in Double Avg aggregate function.

另请参阅:

序列化表格

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.table.planner.functions.aggfunctions.AvgAggFunction

AvgAggFunction.ByteAvgAggFunction, AvgAggFunction.DecimalAvgAggFunction, AvgAggFunction.DoubleAvgAggFunction, AvgAggFunction.FloatAvgAggFunction, AvgAggFunction.IntAvgAggFunction, AvgAggFunction.LongAvgAggFunction, AvgAggFunction.ShortAvgAggFunction

构造器概要

构造器

构造器和说明
DoubleAvgAggFunction()

方法概要

限定符和类型	方法和说明
org.apache.flink.table.types.DataType	getResultType() The result type of the function.
org.apache.flink.table.types.DataType	getSumType()
org.apache.flink.table.expressions.Expression[]	initialValuesExpressions() Expressions for initializing empty aggregation buffers.

从类继承的方法 org.apache.flink.table.planner.functions.aggfunctions.AvgAggFunction

accumulateExpressions, adjustedMinus, adjustedPlus, aggBufferAttributes, getAggBufferTypes, getValueExpression, mergeExpressions, operandCount, retractExpressions

从类继承的方法 org.apache.flink.table.planner.functions.aggfunctions.DeclarativeAggregateFunction

getKind, getTypeInference, mergeOperand, mergeOperands, operand, operands

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

getRequirements, isDeterministic

构造器详细资料

DoubleAvgAggFunction

public DoubleAvgAggFunction()

方法详细资料

getResultType

public org.apache.flink.table.types.DataType getResultType()

从类复制的说明: DeclarativeAggregateFunction

The result type of the function.

指定者:

getResultType 在类中 DeclarativeAggregateFunction

getSumType

public org.apache.flink.table.types.DataType getSumType()

指定者:

getSumType 在类中 AvgAggFunction

initialValuesExpressions

public org.apache.flink.table.expressions.Expression[] initialValuesExpressions()

从类复制的说明: DeclarativeAggregateFunction

Expressions for initializing empty aggregation buffers.

覆盖:

initialValuesExpressions 在类中 AvgAggFunction