Package org.apache.calcite.sql.fun

Class SqlBitOpAggFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.SqlAggFunction

org.apache.calcite.sql.fun.SqlBitOpAggFunction

All Implemented Interfaces:

Context, Wrapper

public class SqlBitOpAggFunction
extends SqlAggFunction

Definition of the BIT_AND and BIT_OR aggregate functions, returning the bitwise AND/OR of all non-null input values, or null if none.

INTEGER and BINARY types are supported: tinyint, smallint, int, bigint, binary, varbinary

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor	Description
SqlBitOpAggFunction(SqlKind kind)	Creates a SqlBitOpAggFunction.

Method Summary

Modifier and Type	Method	Description
Optionality	getDistinctOptionality()	Returns whether this aggregate function allows the DISTINCT keyword.
<T> @Nullable T	unwrap(Class<T> clazz)	Finds an instance of an interface implemented by this object, or returns null if this object does not support that interface.

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

allowsFilter, allowsNullTreatment, getParameterTypes, getReturnType, getRollup, isAggregator, isPercentile, isQuantifierAllowed, requiresGroupOrder, requiresOrder, requiresOver, 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

SqlBitOpAggFunction

public SqlBitOpAggFunction(SqlKind kind)

Creates a SqlBitOpAggFunction.

Method Details

unwrap

public <T> @Nullable T unwrap(Class<T> clazz)

Description copied from interface: Wrapper

Finds an instance of an interface implemented by this object, or returns null if this object does not support that interface.

Specified by:

unwrap in interface Wrapper

Overrides:

unwrap in class SqlAggFunction

getDistinctOptionality

public Optionality getDistinctOptionality()

Description copied from class: SqlAggFunction

Returns whether this aggregate function allows the DISTINCT keyword.

The default implementation returns Optionality.OPTIONAL, which is appropriate for most aggregate functions, including SUM and COUNT.

Some aggregate functions, for example MIN, produce the same result with or without DISTINCT, and therefore return Optionality.IGNORED to indicate this. For such functions, Calcite will probably remove DISTINCT while optimizing the query.

Overrides:

getDistinctOptionality in class SqlAggFunction