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Questions tagged [memgraphdb]

Use this tag for questions related to Memgraph streaming graph database.

Memgraph is an open source graph database built for real time streaming data, compatible with Neo4j. It is an in-memory graph database that uses Cypher as a query language. Memgraph can be extended with graph algorithms that are part of Memgraph Advanced Graph Extensions (MAGE). Graphs can be visualized using Memgraph Lab application.

390 questions
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How to prevent creation of multiple container when ruining Memgraph Platform?

When I run docker ps -a I can see multiple containers. CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS …
GrandMel
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Problems with Docker, Memgraph and port 3000

I've tried to run Memgraph Platform using docker run -it -p 7687:7687 -p 7444:7444 -p 3000:3000 memgraph/memgraph-platform but I got this output Unable to find image 'memgraph/memgraph-platform:latest' locally latest: Pulling from…
Elwood Kharson
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Set the snapshot frequency for Memgraph Platform?

How can I change the snapshot frequency for Memgraph Platform? I'm running the latest Docker version of the Platform (MG 2.7).
Moraltox
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Why would one reference the node on itself?

I get why would someone use code like this CREATE (a:Node {name: "Node A"})-[:RELATIONSHIP_TYPE]->(b:Node {name: "Node B"})-[:RELATIONSHIP_TYPE]->(c:Node {name: "Node C"}) CREATE (c)-[:RELATIONSHIP_TYPE]->(a) I don't understand when would someone…
kontrapschoen
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How can I pass flags and parameters to mgconsole when I use Memgraph Platform?

When I use mgconsole on my OS (Linux, Unbutnu 22) I run it with mgconsole --host 127.0.0.1 --port 7687 --username ttinker --password riegd8cb57. Now I'm trying out Memgrpah Platform docker image. When I start it using run -it -p 7687:7687 -p…
TenTonBonton
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How to display “count”/”avg” as graph results in Memgraph Lab?

Is there any way to show “count” results on graph, eg. number of Tweets of a “hashtag” by “platform”?: “#memgraph” (Hashtag) ├─ “Desktop” │ ├─ “123” (Count) ├─ “IOS” │ ├─ 234 (Count) ├─ “Android” │ ├─ 345 (Count) It would be great if the graph…
Moraltox
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Change CSV delimiter when using mgconsole?

I can see that comma (,) is the default delimiter. For one specific scenario I need to use ; but I don't want to change CSV file manually. How can I change CSV delimiter when using mgconsole?
Zet Hund Pet
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Where is mgconsole history file located?

In Memgraph Lab I can see all of the old queries. Where can I see similar thing when using mgconsole?
TenTonBonton
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Can I use Yen's k-shortest path algorithm in Memgraph?

I am trying to find if there is an implementation of Yen's k-shortest path algorithm in Memgraph and I can't find it in the documentation. Am I missing something or? I am using Memgraph 2.7 and I ran it with Docker.
KateLatte
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Is there TTL feature in Memgraph?

I checked Memgraph docs and I did not find TTL (time to live) or expiration time on node creation feature available. Did I just miss it and it exists, or there is no such feature in Memgraph?
KateLatte
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Getting Node object from Edge in Memgraph

When I am working with an Edge, there is a scenario where I want to find which Node is it, and I only have Memgraph node ID, and not the whole object. And I would want further to make a query with those Nodes I got from Edge property, but I can't as…
Juliette Gia
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How does one typically do subgraph isomorphism?

MAGE doesn’t seem to contain this algorithm. So I was wondering. Do I just build up a query that will match the subgraph(s) that I I am interested in?
Juliette Gia
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How can I count 1:N:1 and N:1:N manners?

I'd like to do a count in the manner of 1:N:1 and N:1:N. Here is my query, but it is not doing exactly what I want: Match (V1)-[e1]->(v2)->[e2]->(v3) With Count(distinct(v1.property)) as cntleft , count(distinct(v3.property)) as cntright Where …
Juliette Gia
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How can I manage Memgraph Docker instances using Python?

I'm developing Python based graph-based applications I want manage different Memgraph database server instances directly from Python. Can this be done?
Taja Jan
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How can I update or add value to a property only if one is not set yet?

I have a list of countries. I need to assign at least one language to a country if one is not already set. If one is set nothing shouldn't be done. How can I achieve this?
Taja Jan
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