org.apache.calcite.sql.fun

Class SqlNtileAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlNtileAggFunction

public class SqlNtileAggFunction
extends SqlAggFunction

NTILE aggregate function 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 and Description
SqlNtileAggFunction()

Method Summary

Methods

Modifier and Type	Method and Description
List<RelDataType>	getParameterTypes(RelDataTypeFactory typeFactory)
RelDataType	getReturnType(RelDataTypeFactory typeFactory)
boolean	requiresOrder() Returns whether this is a window function that requires ordering.

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

isAggregator, isQuantifierAllowed, validateCall

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

deriveType, getFunctionType, getNameAsId, getParamTypes, getSqlIdentifier, getSyntax, unparse, validateQuantifier

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

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, hashCode, inferReturnType, inferReturnType, isDeterministic, isDynamicFunction, 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

Constructor Detail

SqlNtileAggFunction

public SqlNtileAggFunction()

Method Detail

requiresOrder

public boolean requiresOrder()

Description copied from class: SqlOperator

Returns whether this is a window function that requires ordering.

Per SQL:2011, 2, 6.10: "If <ntile function>, <lead or lag function>, RANK or DENSE_RANK is specified, then the window ordering clause shall be present."

Overrides:

requiresOrder in class SqlOperator

See Also:

SqlOperator.isAggregator()

getParameterTypes

public List<RelDataType> getParameterTypes(RelDataTypeFactory typeFactory)

getReturnType

public RelDataType getReturnType(RelDataTypeFactory typeFactory)