io.prestosql.sql.planner.plan

Class LateralJoinNode

java.lang.Object

io.prestosql.sql.planner.plan.PlanNode

io.prestosql.sql.planner.plan.LateralJoinNode

@Immutable
public class LateralJoinNode
extends PlanNode

For every row from input a subquery relation is calculated. Then input row is cross joined with subquery relation and returned as a result.

INNER - does not return any row for input row when subquery relation is empty LEFT - does return input completed with NULL values when subquery relation is empty

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LateralJoinNode.Type

Constructor Summary

Constructors

Constructor and Description
LateralJoinNode(PlanNodeId id, PlanNode input, PlanNode subquery, List<Symbol> correlation, LateralJoinNode.Type type, Expression filter, Node originSubquery)

Method Summary

Modifier and Type	Method and Description
<R,C> R	accept(PlanVisitor<R,C> visitor, C context)
List<Symbol>	getCorrelation()
Expression	getFilter()
PlanNode	getInput()
Node	getOriginSubquery()
List<Symbol>	getOutputSymbols()
List<PlanNode>	getSources()
PlanNode	getSubquery()
LateralJoinNode.Type	getType()
PlanNode	replaceChildren(List<PlanNode> newChildren)

Methods inherited from class io.prestosql.sql.planner.plan.PlanNode

getId

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LateralJoinNode

public LateralJoinNode(PlanNodeId id,
                       PlanNode input,
                       PlanNode subquery,
                       List<Symbol> correlation,
                       LateralJoinNode.Type type,
                       Expression filter,
                       Node originSubquery)

Method Detail

getInput

public PlanNode getInput()

getSubquery

public PlanNode getSubquery()

getCorrelation

public List<Symbol> getCorrelation()

getType

public LateralJoinNode.Type getType()

getFilter

public Expression getFilter()

getOriginSubquery

public Node getOriginSubquery()

getSources

public List<PlanNode> getSources()

Specified by:

getSources in class PlanNode

getOutputSymbols

public List<Symbol> getOutputSymbols()

Specified by:

getOutputSymbols in class PlanNode

replaceChildren

public PlanNode replaceChildren(List<PlanNode> newChildren)

Specified by:

replaceChildren in class PlanNode

accept

public <R,C> R accept(PlanVisitor<R,C> visitor,
                      C context)

Overrides:

accept in class PlanNode