org.apache.calcite.sql.fun

Class SqlNthValueAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlNthValueAggFunction

All Implemented Interfaces:

Context, Wrapper

public class SqlNthValueAggFunction
extends SqlAggFunction

NTH_VALUE windowed aggregate function returns the value of an expression evaluated at the nth row of the window frame.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor and Description
SqlNthValueAggFunction(SqlKind kind)

Method Summary

Modifier and Type	Method and Description
boolean	allowsNullTreatment() Returns whether this aggregate function allows specifying null treatment (RESPECT NULLS or IGNORE NULLS).

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

allowsFilter, getDistinctOptionality, getParameterTypes, getReturnType, getRollup, isAggregator, isPercentile, 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, 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, not, preValidateCall, requiresDecimalExpansion, reverse, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.schema.Wrapper

maybeUnwrap, unwrapOrThrow

Constructor Detail

SqlNthValueAggFunction

public SqlNthValueAggFunction(SqlKind kind)

Method Detail

allowsNullTreatment

public boolean allowsNullTreatment()

Description copied from class: SqlAggFunction

Returns whether this aggregate function allows specifying null treatment (RESPECT NULLS or IGNORE NULLS).

Overrides:

allowsNullTreatment in class SqlAggFunction