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Recent questions tagged neo4j

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neo4j - Is there a way to show cypher execution plan?

I've seen a topic (Understanding Neo4j Cypher Profile keyword and execution plan) where profile keyword is mentioned. I ... we tune the query... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - Return node if relationship is not present

I'm trying to create a query using cypher that will "Find" missing ingredients that a chef might have, ... and aggregating the results myself. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - How can I express additional information (time, probability) about a relation in RDF?

I know that I can represent any relation as a RDF triplet as in: Barack Obama -> president of -> USA ... , how about after and before his presidential periods? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - Dynamic property keys used in Cypher Query to manipulate properties (regardless of the property values)

This is more of a database management question. I'm not trying to extract content stored in properties, ... property-keys-used-in-cypher-query-to-manipulate-properties-regardless...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - apoc.merge.node with special identifier fails

I tried to merge a node with apoc.merge.node but my ident property keys have a special char(:) ... .com/questions/65850959/apoc-merge-node-with-special-identifier-fails...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - how to insert a node in a middle of a linked list in cypher

I am using linked list pattern in cypher to represent some data. (node1)-[:NEXT]->(node2)-[:NEXT]->(node3) the question ... -to-insert-a-node-in-a-middle-of-a-linked-list-in-cypher...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - Remove automorphisms of a cypher query output

When doing a Cypher query to retrieve a specific subgraph with automorphisms, let's say MATCH (a)-[:X] ... .com/questions/65882897/remove-automorphisms-of-a-cypher-query-output...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - How to auto update node attributes in ne04j after a specific time period

Is there a way to update an existing attribute in a node to a new value after a specific time period passes ? ... -auto-update-node-attributes-in-ne04j-after-a-specific-time-period...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - How to return a specific string instead of (no changes, no records) in Cypher query

my query below returns "Success" string if node n successfully matched. In case it was not matched, the output is ... -specific-string-instead-of-no-changes-no-records-in-cypher-qu...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - is it possible to use jqassistant output with graphlytic?

I'm currently struggling with circular dependencies and wanted to see all classes that are dependant on my desired ... /is-it-possible-to-use-jqassistant-output-with-graphlytic...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - Creating a relationship between all nodes with a set property with Cypher

First of all, I'm a complete newbie with neo4j and cypher so I apologize if this is a dumb question. Right ... -a-relationship-between-all-nodes-with-a-set-property-with-cypher...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - gremlin clone a node and its edges

Does gremlin provide the ability to clone a vertex for instance v1->v2, v1->v3, v1->v4 how can I ... ://stackoverflow.com/questions/65617178/clone-vertex-and-its-child-vertices...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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neo4j - How to use the int[] in where IN clause in Cypher Query (using C#)

I have this cypher query int[] pIds = new int[] {101, 012}; var query = _graphClient.Cypher.Read .OptionalMatch($"(p: ... -to-use-the-int-in-where-in-clause-in-cypher-query-using-c...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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neo4j browser being slooooow

I have grown used to the neo4j browser being slow. I mean really slow. If I make a query to the ... from:https://stackoverflow.com/questions/65644538/neo4j-browser-being-slooooow...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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neo4j - How to create nodes with parameterized labels in Cypher

It has been a while (2 years) since that same question was asked. Back then, creating nodes or relationships ... /65645377/how-to-create-nodes-with-parameterized-labels-in-cypher...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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neo4j - Running a case-insensitive cypher query

Is it possible to run a case-insensitive cypher query on neo4j? Try that: http://console.neo4j.org ... /stackoverflow.com/questions/13439278/running-a-case-insensitive-cypher-query...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - Running a case-insensitive cypher query

Is it possible to run a case-insensitive cypher query on neo4j? Try that: http://console.neo4j.org ... /stackoverflow.com/questions/13439278/running-a-case-insensitive-cypher-query...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j Out of Memory error when using python

I'm getting the following out of memory error when running neo4j queries in Python. I'm using neo4j 4.1.0 desktop. neo4j ... , do I really need 12GB of memory to query the graph?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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neo4j - In a graph db, is there a limit on how many node labels you can have?

I'm considering making hundreds of thousands of nodes with their own labels and connecting them to each other via millions ... anywhere with Neo4j, Dgraph, or any other graph db?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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neo4j browser doesn't visualize pro

I made two node and one relationship node: Person(Sally, John) and book(gdp) relation: HAS_READ and I wanted to see " ... relation edges, How could I do? ex) John -HAS_READ->gdp...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

neo4j - How to use the int[] in where IN clause in Cypher Query (using C#)

I have this cypher query int[] pIds = new int[] {101, 012}; var query = _graphClient.Cypher.Read .OptionalMatch($"(p: { ... values? How should I pass the int[] in the Where IN......

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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neo4j - Cypher request with ON CREATE SET, ON MATCH SET and SET?

Is it possible to have the three condition in the same request : ON CREATE SET, ON MATCH SET and just SET to apply ... SET p.status="KNOWN" SET p.lastUpdated=datetime() RETURN p...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j cypher - Match node where another specific node of the same type doesn't exist

Background I have a neo4j database set up with the following nodes; (:game)-[:teamscore]-(:team) The 'game' node would ... do want to match. Thanks in advance for any help on this!...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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neo4j - How to find a particular folder in volume mounted using Docker?

I am using Neo4j using Docker image to up the database on Windows 10. The command: docker run --publish=7474:7474 -- ... folder, and how to delete few files or the entire folder....

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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neo4j - Merge Duplicate Paths

I am trying to compare and merge identical paths. I am following along with this example, but it is only comparing ... would I construct a query to obtain the overlapping paths?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

neo4j - match using variable and create relationship between the results of the same variable

I have this relationship: and I have built this clause: My point is that I want now to create a relationship ... relationship called "X" between them How can I achieve that?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.7k views

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neo4j - LIMIT not working inside apoc procedure apoc.cypher.run

I am trying to run following Neo4j cypher Query: MATCH (m:Person { id: '$id'})-[:FOLLOWS]->(f:Person) ... 0.8.6 Please find attached PROFILE and EXPLAIN screenshot: PROFILE EXPLAIN...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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4.5k views

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neo4j - Unwind with Multiple OPTIONAL MATCH returns duplicates

My graph has the following entities: Post User And has the following relationship examples User-[:POSTED]->Post User ... MATCHes for the values and it keeps duplicating the result....

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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