Package org.apache.calcite.sql.fun

Class SqlLeadLagAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlLeadLagAggFunction

All Implemented Interfaces:

Context, Wrapper

public class SqlLeadLagAggFunction
extends SqlAggFunction

LEAD and LAG aggregate functions return the value of given expression evaluated at given offset.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor	Description
SqlLeadLagAggFunction(boolean isLead)	Deprecated.
SqlLeadLagAggFunction(SqlKind kind)

Method Summary

Modifier and Type	Method	Description
boolean	allowsFraming()	Returns whether this is a window function that allows framing (i.e.
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, 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

SqlLeadLagAggFunction

public SqlLeadLagAggFunction(SqlKind kind)

SqlLeadLagAggFunction

@Deprecated
public SqlLeadLagAggFunction(boolean isLead)

Deprecated.

Method Details

allowsFraming

public boolean allowsFraming()

Description copied from class: SqlOperator

Returns whether this is a window function that allows framing (i.e. a ROWS or RANGE clause in the window specification).

Overrides:

allowsFraming in class SqlOperator

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