org.apache.calcite.rel.core

Class Minus

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.SetOp

org.apache.calcite.rel.core.Minus

All Implemented Interfaces:

Cloneable, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.hint.Hintable, org.apache.calcite.rel.RelNode

Direct Known Subclasses:

LogicalMinus

public abstract class Minus
extends SetOp

Relational expression that returns the rows of its first input minus any matching rows from its other inputs.

Temporarily copy from calcite to cherry-pick [CALCITE-5107] and will be removed when upgrade the latest calcite.

Corresponds to the SQL EXCEPT operator.

If "all" is true, then multiset subtraction is performed; otherwise, set subtraction is performed (implying no duplicates in the results).

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

org.apache.calcite.rel.RelNode.Context

Field Summary

Fields inherited from class org.apache.calcite.rel.core.SetOp

all, hints, inputs, kind

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Minus(org.apache.calcite.rel.RelInput input) Creates a Minus by parsing serialized output.
protected	Minus(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, List<org.apache.calcite.rel.hint.RelHint> hints, List<org.apache.calcite.rel.RelNode> inputs, boolean all)
	Minus(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, List<org.apache.calcite.rel.RelNode> inputs, boolean all)

Method Summary

Modifier and Type	Method and Description
double	estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Methods inherited from class org.apache.calcite.rel.core.SetOp

copy, copy, deriveRowType, explainTerms, getHints, getInputs, isHomogeneous, replaceInput

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.calcite.rel.hint.Hintable

attachHints, withHints

Methods inherited from interface org.apache.calcite.rel.RelNode

explain, fieldIsNullable

Constructor Detail

Minus

protected Minus(org.apache.calcite.plan.RelOptCluster cluster,
                org.apache.calcite.plan.RelTraitSet traits,
                List<org.apache.calcite.rel.hint.RelHint> hints,
                List<org.apache.calcite.rel.RelNode> inputs,
                boolean all)

Minus

public Minus(org.apache.calcite.plan.RelOptCluster cluster,
             org.apache.calcite.plan.RelTraitSet traits,
             List<org.apache.calcite.rel.RelNode> inputs,
             boolean all)

Minus

protected Minus(org.apache.calcite.rel.RelInput input)

Creates a Minus by parsing serialized output.

Method Detail

estimateRowCount

public double estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Specified by:

estimateRowCount in interface org.apache.calcite.rel.RelNode

Overrides:

estimateRowCount in class org.apache.calcite.rel.AbstractRelNode