org.apache.drill.exec.planner.physical

Class AggPrelBase.SqlSumCountAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.drill.exec.planner.physical.AggPrelBase.SqlSumCountAggFunction

All Implemented Interfaces:

org.apache.calcite.plan.Context

Enclosing class:

AggPrelBase

public class AggPrelBase.SqlSumCountAggFunction
extends org.apache.calcite.sql.SqlAggFunction

Specialized aggregate function for SUMing the COUNTs. Since return type of COUNT is non-nullable and return type of SUM is nullable, this class enables creating a SUM whose return type is non-nullable.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor and Description
AggPrelBase.SqlSumCountAggFunction(org.apache.calcite.rel.type.RelDataType type)

Method Summary

Methods

Modifier and Type	Method and Description
List<org.apache.calcite.rel.type.RelDataType>	getParameterTypes(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
org.apache.calcite.rel.type.RelDataType	getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
org.apache.calcite.rel.type.RelDataType	getType()

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

isAggregator, isQuantifierAllowed, requiresOrder, requiresOver, unwrap, validateCall

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

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

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

AggPrelBase.SqlSumCountAggFunction

public AggPrelBase.SqlSumCountAggFunction(org.apache.calcite.rel.type.RelDataType type)

Method Detail

getParameterTypes

public List<org.apache.calcite.rel.type.RelDataType> getParameterTypes(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

getType

public org.apache.calcite.rel.type.RelDataType getType()

getReturnType

public org.apache.calcite.rel.type.RelDataType getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)