org.apache.calcite.sql.fun

Class SqlSingleValueAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlSingleValueAggFunction

All Implemented Interfaces:

Context, Wrapper

public class SqlSingleValueAggFunction
extends SqlAggFunction

SINGLE_VALUE aggregate function returns the input value if there is only one value in the input; Otherwise it triggers a run-time error.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor and Description
SqlSingleValueAggFunction(RelDataType type)

Method Summary

Modifier and Type	Method and Description
boolean	allowsFilter() Whether this aggregate function allows a FILTER (WHERE ...)
List<RelDataType>	getParameterTypes(RelDataTypeFactory typeFactory)
RelDataType	getReturnType(RelDataTypeFactory typeFactory)
RelDataType	getType() Deprecated.

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

allowsNullTreatment, getDistinctOptionality, isAggregator, isQuantifierAllowed, requiresGroupOrder, 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, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSymmetrical, 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

SqlSingleValueAggFunction

public SqlSingleValueAggFunction(RelDataType type)

Method Detail

allowsFilter

public boolean allowsFilter()

Description copied from class: SqlAggFunction

Whether this aggregate function allows a FILTER (WHERE ...) clause.

Overrides:

allowsFilter in class SqlAggFunction

getParameterTypes

public List<RelDataType> getParameterTypes(RelDataTypeFactory typeFactory)

Overrides:

getParameterTypes in class SqlAggFunction

getReturnType

public RelDataType getReturnType(RelDataTypeFactory typeFactory)

Overrides:

getReturnType in class SqlAggFunction

getType

@Deprecated
public RelDataType getType()

Deprecated.