org.apache.calcite.sql.fun

Class SqlHistogramAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlHistogramAggFunction

public class SqlHistogramAggFunction
extends SqlAggFunction

HistogramAgg is base operator which supports the Histogram MIN/MAX aggregatoin functions. which returns the sum of the values which go into it. It has precisely one argument of numeric type (int, long, float, double) results are retrived with (HistogramMin) and (HistogramMax)

Field Summary

Fields inherited from class org.apache.calcite.sql.SqlOperator

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor and Description
SqlHistogramAggFunction(RelDataType type)

Method Summary

Methods

Modifier and Type	Method and Description
List<RelDataType>	getParameterTypes(RelDataTypeFactory typeFactory)
RelDataType	getReturnType(RelDataTypeFactory typeFactory)
RelDataType	getType()

Methods inherited from class org.apache.calcite.sql.SqlAggFunction

isAggregator, isQuantifierAllowed, validateCall

Methods inherited from class org.apache.calcite.sql.SqlFunction

deriveType, getFunctionType, getNameAsId, getParamTypes, getSqlIdentifier, getSyntax, unparse, validateQuantifier

Methods inherited from class org.apache.calcite.sql.SqlOperator

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, hashCode, inferReturnType, inferReturnType, isDeterministic, isDynamicFunction, isName, leftPrec, preValidateCall, requiresDecimalExpansion, requiresOrder, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SqlHistogramAggFunction

public SqlHistogramAggFunction(RelDataType type)

Method Detail

getParameterTypes

public List<RelDataType> getParameterTypes(RelDataTypeFactory typeFactory)

getType

public RelDataType getType()

getReturnType

public RelDataType getReturnType(RelDataTypeFactory typeFactory)