Question

以下查询出了什么问题？ [Neo4j 1.8.2，嵌入式]

start merchant = node:merchants('id:10')
match (merchant)<-[:VALID_AT]-(offer)-[:TARGET_PINCODE]->(pincode)<-[:RESIDES_IN]-(customer) where (offer)-[:VALID_OFFER]->() and offer.endDate > 1
return count(offer)

Webadmin返回undefined

Java例外：

org.neo4j.helpers.ThisShouldNotHappenError：开发商：Andres声称 that：此执行计划不应存在。在 org.neo4j.cypher.internal.commands.PathExpression $$ anonfun $ 4.适用（PathExpression.scala：47）在 org.neo4j.cypher.internal.commands.PathExpression $$ anonfun $ 4.适用（PathExpression.scala：46）在 scala.collection.LinearSeqOptimized $ class.exists（LinearSeqOptimized.scala：79）在scala.collection.immutable.List.exists（List.scala：45）at org.neo4j.cypher.internal.commands.PathExpression.apply（PathExpression.scala：46）在 org.neo4j.cypher.internal.commands.PathExpression.apply（PathExpression.scala：31）在 org.neo4j.cypher.internal.commands.NonEmpty.isMatch（Predicate.scala：283）在org.neo4j.cypher.internal.commands.And.isMatch（Predicate.scala：83）在 org.neo4j.cypher.internal.pipes.matching.FilteringIterable $ FilteringIterator.spoolToNextInLine（FilteringIterable.scala：55）在 org.neo4j.cypher.internal.pipes.matching.FilteringIterable $ FilteringIterator（FilteringIterable.scala：34）。在 org.neo4j.cypher.internal.pipes.matching.FilteringIterable.iterator（FilteringIterable.scala：72）在 org.neo4j.cypher.internal.pipes.matching.FilteringIterable.iterator（FilteringIterable.scala：27）在 scala.collection.JavaConversions $ IterableWrapperTrait $ class.iterator（JavaConversions.scala：557）在 scala.collection.JavaConversions $ IterableWrapper.iterator（JavaConversions.scala：583）在 scala.collection.JavaConversions $ IterableWrapper.iterator（JavaConversions.scala：583）在 org.neo4j.kernel.impl.traversal.TraversalBranchWithState.expandRelationshipsWithoutChecks（TraversalBranchWithState.java:70）在 org.neo4j.kernel.impl.traversal.TraversalBranchImpl.expandRelationships（TraversalBranchImpl.java:104）在 org.neo4j.kernel.impl.traversal.StartNodeTraversalBranch.next（StartNodeTraversalBranch.java:47）在 org.neo4j.kernel.impl.traversal.AsOneStartBranch.next（AsOneStartBranch.java:100）在 org.neo4j.kernel.PreorderDepthFirstSelector.next（PreorderDepthFirstSelector.java:52）在 org.neo4j.kernel.impl.traversal.TraverserIterator.fetchNextOrNull（TraverserIterator.java:65）在 org.neo4j.kernel.impl.traversal.TraverserIterator.fetchNextOrNull（TraverserIterator.java:34）在 org.neo4j.helpers.collection.PrefetchingIterator.hasNext（PrefetchingIterator.java:55）在 scala.collection.JavaConversions $ JIteratorWrapper.hasNext（JavaConversions.scala：574）在scala.collection.Iterator $$ anon $ 21.hasNext（Iterator.scala：371）at at scala.collection.Iterator $$ anon $ 21.hasNext（Iterator.scala：371）at scala.collection.Iterator $$ anon $ 22.hasNext（Iterator.scala：388）at scala.collection.Iterator $ class.foreach（Iterator.scala：660）at scala.collection.Iterator $$ anon $ 22.foreach（Iterator.scala：382）at org.neo4j.cypher.internal.pipes.EagerAggregationPipe.createResults（EagerAggregationPipe.scala：76）在 org.neo4j.cypher.internal.pipes.ColumnFilterPipe.createResults（ColumnFilterPipe.scala：37）在 org.neo4j.cypher.internal.executionplan.ExecutionPlanImpl $$ anonfun $ 7.适用（ExecutionPlanImpl.scala：127）在 org.neo4j.cypher.internal.executionplan.ExecutionPlanImpl $$ anonfun $ 7.适用（ExecutionPlanImpl.scala：125）在 org.neo4j.cypher.internal.executionplan.ExecutionPlanImpl.execute（ExecutionPlanImpl.scala：33）在org.neo4j.cypher.ExecutionEngine.execute（ExecutionEngine.scala：59）在org.neo4j.cypher.ExecutionEngine.execute（ExecutionEngine.scala：63）在 org.neo4j.cypher.javacompat.ExecutionEngine.execute（ExecutionEngine.java:79）

注意：返回商品而不是返回商数（商品）

Answer 1

升级到Neo4j 1.9 RC1并且问题不再存在

Cypher：ThisShouldNotHappenError：此执行计划不应存在

1 个答案: