Package org.apache.calcite.sql.fun

Class SqlCovarAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlCovarAggFunction

All Implemented Interfaces:

Context, Wrapper

public class SqlCovarAggFunction
extends SqlAggFunction

Covar is an aggregator which returns the Covariance of the values which go into it. It has precisely two arguments of numeric type (int, long, float, double), and the result is the same type.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	SqlCovarAggFunction.Subtype	Deprecated.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor	Description
SqlCovarAggFunction(RelDataType type, SqlCovarAggFunction.Subtype subtype)	Deprecated.
SqlCovarAggFunction(SqlKind kind)	Creates a SqlCovarAggFunction.

Method Summary

Modifier and Type	Method	Description
SqlCovarAggFunction.Subtype	getSubtype()	Deprecated.

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

allowsFilter, allowsNullTreatment, 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, deriveOperandType, 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 Details

SqlCovarAggFunction

public SqlCovarAggFunction(SqlKind kind)

Creates a SqlCovarAggFunction.

SqlCovarAggFunction

@Deprecated
public SqlCovarAggFunction(RelDataType type,
 SqlCovarAggFunction.Subtype subtype)

Deprecated.

Method Details

getSubtype

@Deprecated
public SqlCovarAggFunction.Subtype getSubtype()

Deprecated.

Returns the specific function, e.g. COVAR_POP or COVAR_SAMP.

Returns:

Subtype