neo4j - Return common node between 2 different queries -


i want find out common node between 2 different queries. trying hard find out, not think of solution. motive collect top 5 out-degree nodes, collect top 5 root nodes, , return nodes common between top 5 outdegree , root nodes. don't know how merge results because after using "return" option in first query, no further statements executed, without "return" option cannot collect results. (please correct me, if thinking wrong). following queries,

// root nodes match (u:port1)<-[r]-(root) not((root)<--()) return distinct(root.id) node, count(r) outdegree order count(r) desc limit 5  //for outdegree nodes match (n:port1)-[r]->() return n.id node, count(r) outdegree order outdegree desc union match (a:port1)-[r]->(leaf) not((leaf)-->()) return leaf.id node, 0 outdegree limit 5

how should combine both results, , output of list of nodes common? please me. in advance.

if want intersection between two, don't need unions. collect top 5 in both cases , find intersection.

apoc procedures can here. like:

// root nodes match (:port1)<-[r]-(root) not((root)<--()) // no need distinct since you're aggregating root, count(r) outdegree order outdegree desc limit 5 collect(root) rootnodes // single row  //for outdegree nodes match (n:port1) // more efficient way out degree without needing expand rootnodes, n, size((n)-->()) outdegree order outdegree desc limit 5  rootnodes, collect(n) outdegreenodes apoc.coll.intersection(rootnodes, outdegreenodes) commonnodes  // if needed, unwind , outdegree unwind commonnodes commonnode return commonnode.id node, size((commonnode)-->()) outdegree

Comments

Post a Comment

Popular posts from this blog

php - Vagrant up error - Uncaught Reflection Exception: Class DOMDocument does not exist -

i've set bento/ubuntu-16.04 vagrant box using php 5.6, , getting following error quite few times when try , run shell script: "uncaught reflection exception: class domdocument not exist". i've tried adding following top of script (not together), each no success: "sudo apt-get install php5.6-xml", "sudo apt-get install php5-xml", "sudo apt-get install php-dom" i've tried resetting server "sudo service apache2 restart". does have suggestions?
Read more

vue.js - Create hooks for automated testing -

Image
qa guys complained can't automate frontend testing. because our html looks same outside. lazy hack did this <template> <div :role="$options.name"> ... </div> </template> <script> export default { name: 'vmcomponentname' } </script> which takes name script , applies html. in browser get: <div role="vmcomponentname"> ... </div> line :role="$options.name" goes in every component. is there dry er solutions? please share. additional details i'll explain in details looking for. imagine have vmusercreate form creates user. test case can create user . to automatically test without role, have use following selector: .wrapper > .wrapper > .wrapper > .submit-button the test extremely brittle (will break lot). if use roles can use [role="vmusercreateform"] .submit-button selector. many folds less brittle. so basically, i'm ...
Read more

Add new key value to json node in java -

i have json file : { "id":1, "name":"abc", "addressdetails": { "city":"newyork" } } i wanted add 1 more key-value ("pincode" : "414141") node 'addressdetails'. i tried using : objectmapper mapper = new objectmapper(); jsonnode root = mapper.readtree(new file("d://test.json")); objectnode node = mapper.createobjectnode(); node.with("addressdetails").put("pincode", "414141"); but it's not getting added, there way can ? you can try you should modify file path objectmapper mapper = new objectmapper(); objectnode nodes = mapper.readvalue(new file("d:\\test.txt"), objectnode.class); nodes.with("addressdetails").put("pincode", "414141"); mapper.writer().writevalue(new file("d:\\test.txt"), nodes);
Read more