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

Modifier and Type	Field and Description
private static SqlSingleOperandTypeChecker	OPERAND_TYPES
private static SqlReturnTypeInference	RETURN_TYPE

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

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

Method Summary

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

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

allowsFilter, getParameterTypes, getReturnType, 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, 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, isGroup, isGroupAuxiliary, 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

Field Detail

OPERAND_TYPES

private static final SqlSingleOperandTypeChecker OPERAND_TYPES

RETURN_TYPE

private static final SqlReturnTypeInference RETURN_TYPE

Constructor Detail

SqlLeadLagAggFunction

public SqlLeadLagAggFunction(SqlKind kind)

SqlLeadLagAggFunction

@Deprecated
public SqlLeadLagAggFunction(boolean isLead)

Deprecated.

Method Detail

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