Package org.apache.calcite.rel.core

Defines core relational expressions.

See: Description

Interface Summary

Interface	Description
RelFactories.AggregateFactory	Can create a LogicalAggregate of the appropriate type for this rule's calling convention.
RelFactories.FilterFactory	Can create a LogicalFilter of the appropriate type for this rule's calling convention.
RelFactories.JoinFactory	Can create a join of the appropriate type for a rule's calling convention.
RelFactories.ProjectFactory	Can create a LogicalProject of the appropriate type for this rule's calling convention.
RelFactories.SemiJoinFactory	Can create a semi-join of the appropriate type for a rule's calling convention.
RelFactories.SetOpFactory	Can create a SetOp for a particular kind of set operation (UNION, EXCEPT, INTERSECT) and of the appropriate type for this rule's calling convention.
RelFactories.SortFactory	Can create a Sort of the appropriate type for this rule's calling convention.

Class Summary

Class	Description
Aggregate	Relational operator that eliminates duplicates and computes totals.
Aggregate.AggCallBinding	Implementation of the SqlOperatorBinding interface for an aggregate call applied to a set of operands in the context of a LogicalAggregate.
AggregateCall	Call to an aggFunction function within an LogicalAggregate.
Calc	Calc is an abstract base class for implementations of LogicalCalc.
Collect	A relational expression that collapses multiple rows into one.
Correlate	A relational operator that performs nested-loop joins.
CorrelationId	Describes the necessary parameters for an implementation in order to identify and set dynamic variables
EquiJoin	Base class for any join whose condition is based on column equality.
Exchange	Relational expression that imposes a particular distribution on its input without otherwise changing its content.
Filter	Relational expression that iterates over its input and returns elements for which condition evaluates to true.
Intersect	Relational expression that returns the intersection of the rows of its inputs.
Join	Relational expression that combines two relational expressions according to some condition.
JoinInfo	An analyzed join condition.
Minus	Relational expression that returns the rows of its first input minus any matching rows from its other inputs.
Project	Relational expression that computes a set of 'select expressions' from its input relational expression.
Project.Flags	Deprecated
RelFactories	Contains factory interface and default implementation for creating various rel nodes.
Sample	Relational expression that returns a sample of the rows from its input.
SemiJoin	Relational expression that joins two relational expressions according to some condition, but outputs only columns from the left input, and eliminates duplicates.
SetOp	SetOp is an abstract base for relational set operators such as UNION, MINUS (aka EXCEPT), and INTERSECT.
Sort	Relational expression that imposes a particular sort order on its input without otherwise changing its content.
SortExchange	Relational expression that performs Exchange and Sort simultaneously.
TableFunctionScan	Relational expression that calls a table-valued function.
TableModify	Relational expression that modifies a table.
TableScan	Relational operator that returns the contents of a table.
Uncollect	Relational expression that unnests its input's sole column into a relation.
Union	Relational expression that returns the union of the rows of its inputs, optionally eliminating duplicates.
Values	Relational expression whose value is a sequence of zero or more literal row values.
Window	A relational expression representing a set of window aggregates.
Window.Group	Group of windowed aggregate calls that have the same window specification.
Window.RexWinAggCall	A call to a windowed aggregate function.

Enum Summary

Enum	Description
Aggregate.Group	What kind of roll-up is it?
JoinRelType	Enumeration of join types.
TableModify.Operation	Enumeration of supported modification operations.

Package org.apache.calcite.rel.core Description

Defines core relational expressions.

Related packages and classes

• Package org.apache.calcite.rel.logical contains logical relational expressions
• Package org.apache.calcite.rex defines the relational expression API