'How to get all parent nodes of a particular node based on ID
I want to fetch all 3rd level nodes(4,5,6 and 7 in below pic) and its relationships along with its parent node details In the below example:
- If I send
ID : 7
then I should get node info of3
and `1 - If I send
ID : 4
then I should get node info of2
and `1
How can I get parent node details? Please help
EDIT: I am trying query to get nodes, edges and immediate parent details. Nodes and edges I am getting but with parent I am getting big list of nodes. Not sure why
Match (n)-[r]-() OPTIONAL MATCH (parent:ParentNodeType)<--(child) return n,r,COLLECT(parent) as parent
Solution 1:[1]
This is a typical path query. If you link it to both child and root, you only have to retrieve a single path. Below I assume that you pass myid
as a parameter and that you have linked the nodes using :HAS_CHILD
relationships
// the path pattern
MATCH path=(root)-[:HAS_CHILD*]->(child)
// limiting the search
WHERE NOT ()-[:HAS_CHILD]->(root)
AND child.ID = $myid
//returning the results
RETURN path
or
// return the IDs, except the last one, because it is the node you started from
UNWIND nodes(path)[..-1] AS node
RETURN node.ID AS parent
Solution 2:[2]
So If you want to get all nodes of parent then use below query
Match (n)-[r]-() OPTIONAL MATCH (parent:ParentNodeType)<-[r1*]-(child) return n,r,COLLECT(parent) as parent
As you mentioned in comment you are looking for 3rd level parent so you can give level number also whatever you want to get. Please see below query for specific level
Match (n)-[r]-() OPTIONAL MATCH (parent:ParentNodeType)<-[r1*3]-(child) return n,r,COLLECT(parent) as parent
and as per my understanding you do not need to write this long query. check below query if you are getting your required result
MATCH (p)<-[r*3]-(c) return p,r,c
Solution 3:[3]
MATCH (n:Child)
WHERE n.id = "ID"
WITH n, [(n)<-[:CHILDREN*]-(Root) | Root] as ancestors, [(Root)<- [:CHILDREN*]-(n) | Root] as descendants
RETURN n, ancestors, descendants
Where n -> The node that we used for fetching data
ancestors -> Represents list of Parent nodes
descendants -> Represents list of Child nodes
CHILDREN -> Is the relation-ship between Parent and Child (change accordingly)
Root -> It is the label for accessing Parent (change accordingly)
This query is capable of fetching all the parent and child nodes of the provided node
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
Solution | Source |
---|---|
Solution 1 | Graphileon |
Solution 2 | |
Solution 3 | M D A |