Package org.apache.calcite.sql.fun

Class SqlFirstLastValueAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlFirstLastValueAggFunction

All Implemented Interfaces:

Context, Wrapper

public class SqlFirstLastValueAggFunction
extends SqlAggFunction

FIRST_VALUE and LAST_VALUE aggregate functions return the first or the last value in a list of values that are input to the function.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor	Description
SqlFirstLastValueAggFunction(boolean firstFlag)	Deprecated.
SqlFirstLastValueAggFunction(SqlKind kind)

Method Summary

Modifier and Type	Method	Description
boolean	allowsNullTreatment()	Returns whether this aggregate function allows specifying null treatment (RESPECT NULLS or IGNORE NULLS).
List<RelDataType>	getParameterTypes(RelDataTypeFactory typeFactory)
RelDataType	getReturnType(RelDataTypeFactory typeFactory)

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

allowsFilter, getDistinctOptionality, 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, deriveOperandType, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getSqlCallFactory, 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 Details

SqlFirstLastValueAggFunction

public SqlFirstLastValueAggFunction(SqlKind kind)

SqlFirstLastValueAggFunction

@Deprecated
public SqlFirstLastValueAggFunction(boolean firstFlag)

Deprecated.

Method Details

getParameterTypes

public List<RelDataType> getParameterTypes(RelDataTypeFactory typeFactory)

Overrides:

getParameterTypes in class SqlAggFunction

getReturnType

public RelDataType getReturnType(RelDataTypeFactory typeFactory)

Overrides:

getReturnType in class SqlAggFunction

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