Package io.prestosql.sql.planner.iterative.rule

Class PushProjectionThroughJoin

java.lang.Object

io.prestosql.sql.planner.iterative.rule.PushProjectionThroughJoin

public final class PushProjectionThroughJoin
extends Object

Utility class for pushing projections through inner join so that joins are not separated by a project node and can participate in cross join elimination or join reordering.

Method Summary

Modifier and Type	Method	Description
static Optional<PlanNode>	pushProjectionThroughJoin(Metadata metadata, ProjectNode projectNode, Lookup lookup, PlanNodeIdAllocator planNodeIdAllocator)

Methods inherited from class java.lang.Object

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

Method Detail

pushProjectionThroughJoin

public static Optional<PlanNode> pushProjectionThroughJoin(Metadata metadata,
                                                           ProjectNode projectNode,
                                                           Lookup lookup,
                                                           PlanNodeIdAllocator planNodeIdAllocator)