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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.

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How to get ling prediction (something like GNN algorithm) in Memgraph?

On the MAGE algorithm page I've found the Graph Neural Network algorithm, but it says that it has not been implemented yet. Is there a way to get link prediction in Memgraph?
KWriter
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Is there any way how to use/add/install my own Custom Query Module in Memgraph Cloud?

On my local Memgraph instance (Memgrpah platform running in Docker) I've created a few Custom query modules. I'd like to use them at Memgraph Cloud. Can I add them to Cloud somehow?
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RAM usage when using Memgraph

I’m trying to generate graph schema in Memgraph Lab. Dataset is big (868k nodes and 1.6m edges) but 16GB of RAM should be more than enough to handle it. How cam I calculate the approx. RAM usage?
MPesi
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Is there a way to do this inside Memgraph with triggers?

When calling a query module from a trigger statement, what I expected to get within a function was a state of the graph before the query changes occurred. However, this is not the case, and made changes are already visible in the graph state. I’ll…
MPesi
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Is there a way to improve query time across relations?

Is there a way to improve query time across relations? Yet to measure, but I'm currently modeling my data in Memgraph in such a way that I will have several versions, and a typical query will look like: MATCH (:Version { major: $major, minor: $minor…
MPesi
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Replication in Memgraph

I'm familiar with replication from other systems and I've read the docs about sync, async and semi-sync replication in Memgraph. What I'm most interested in is the why: what benefits do we get from replication? Disaster recovery, high availability,…
MPesi
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Distinct types of all created nodes and relationships in Memgraph's database

Where can I find Memgraph's docs to list all distinct types of all created nodes and relationships from a graph in database? I found this: https://memgraph.com/docs/cypher-manual/connecting-nodes and if I create nodes and relationships using that -…
MPesi
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Executing Memgraph's GQLAlchemy

I have the Memgraph platform running inside Docker. How can I execute the GQLAlchemy script on that platform?
MPesi
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How to change the default username and password for Memgraph

I am running Memgraph using docker with the following command: docker run -it -p 7687:7687 memgraph/memgraph --memory-limit=50 --log-level=TRACE I have been looking at the available memgraph configuration settings but I can't seem to find a setting…
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How to connect using Neo4j driver over IPv6?

Is it possible to connect to a Neo4j or Memgraph database over IPv6? I am using the neo4j-driver javascript library but it seems that it is not able to parse a IPv6 connection string: const driver =…
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Exporting queries to another computer?

I have desktop version of Memgraph Lab. At the moment I'm copying queries one by one into shared document on network drive so that I can run them on another server. On that server I have Memgraph Platform. I wonder can I somehow export queries from…
Taja Jan
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Which ports must firewall and VPN connection allow to use Memgraph Lab?

I've downloaded Memgraph Lab desktop application and I want to connect to server that is at my university. So far I was connecting using SHH to get to mgconsole. Now I would like to use Memgrpah Lab so that I can create images of graphs. I can see…
KWriter
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How can I style nodes in Memgraph Lab?

I want to change the color and size of nodes from the default values. I have a huge resolution and I need to zoom in a lot to see what I want. How can I do that?
Taja Jan
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Can I create a graph from mgconsole?

I would like to SSH to remote server that runs Memgraph and generate graph as PNG, PDF, JPG, SVG or some graphical format right from mgconsole. Is there an export option for graphics in Cypher that does that?
KWriter
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Is Memgraph following openCypher specification?

I've taken a look at openCypher specs. And I wonder if I can use all of the clauses any principles from openCypher in Memgraph.
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