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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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Direct Import of gziped (.gz) files in Memgraph

My data is stored in .CSV file. I'm trying to find an efficient method for directly importing .csv.gz files. In my current process, I'm loading these files via Python and then using the ORM. However, I'm finding this approach less efficient than I'd…
Moraltox
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Replication Synchronization in Memgraph: Inclusion of Indexes, Constraints, and Migrations

I am working with a replication setup in Memgraph, and I've come across an uncertainty regarding the synchronization process between instances. My question is whether or not indexes, constraints, migrations, and similar configurations are also…
Moraltox
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Can you stream data out of Memgraph?

I'm currently working with Memgraph. I'm trying to figure out if there's a way to have a changes feed similar to what Couchbase offers. I'm interested in the possibility of streaming data from Memgraph out into Apache Kafka. Ideally, I would like to…
ZoomZoom
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Is there a Memgraph Helm Chart out there?

So far I've used Memgraph on Docker. Now I'd like to see it on K8, podman, etc. to see what works and what doesn't work. Helm Chart seems like a good starting point, but I can't find one for Memgraph. Can someone direct me where to start from?
GrandMel
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How to compile Memgraph 2.7 on ARM / M1 (inside Docker)

I 'cant get Memgraph 2.7 to compile on my Mac (M1 CPU) inside of the Docker. I can run Memgraph Platform 2.7 without any issues so I suspect that there is something with make file that I'm missing.
Moraltox
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Support for count(DISTINCT) or any other collect-like operation in Memgraph

I use Memegraph in Dockerized environment. Memgraph version is 2.4.1. I have a need for count(DISTINCT) or some other collect-like operation. But I can't find it in the docs. Is this supported?
ZoomZoom
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What are the differences of implementations in Neo4j and Memgrpah?

I couldn't find FOREACH defined in OpenCypher, but I found it in Neo4j and Memgraph implementations of Cypher query language. Does anyone know what is the difference between this two implementations?
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Error during install of Memgraph Lab on Lima

I am trying to install Memgraph Lab and after downloading it for linux debian I get the following error - "dpkg:error processing archive MemgraphLab-2.7.1-amd64.deb (--install): package architecture (amd64) does not match system (arm64)". I am…
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Timeout while reading from connection: Query gets stuck if Cypher contains any path and does not have RETURN

I have Memgraph 2.4.1 running using WSL2 on Windows 11. My memgraph+neo4j-go-driver is stuck on sess.Close or res.Consume if cypher contains any path and does not have RETURN. This is my code: package main import ( "context" "fmt" …
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Unexpected results when using LIMIT in Memgraph Cypher query

I'm trying to limit my query to 5 results, but it's only returning 2. There are definitely more than 5 'Person' nodes in the database. Is there a particular reason why the LIMIT clause might not return the expected number of results? MATCH…
TenTonBonton
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Nested FOREACH get converted to property maps

I have Memgraph 2.4.1 running using WSL2 on Windows 11. It appears that when FOREACH statements are nested, the transfer of node lists is not handled accurately. There seems to be an unexpected conversion taking place where the node lists are…
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How can I run MATCH query on replica?

I've found some leering materials and setup for Memgraph related to on project that I should pickup up after the summer break. The setup is Dockerized environment. I have MAIN Memgraph instance and REPLICA. Memgraph version is 2.4.1 When I try to…
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Query `RETURN true, false;` doesn't work inside Memgraph, what's the alternative query that produces equivalent results?

Query RETURN true, false; doesn't work inside Memgraph, what's the alternative query that produces equivalent results? I get the error Multiple results with the same name 'true' are not allowed. Memgraph Lab is running at localhost:3000 mgconsole…
ZoomZoom
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NetworkX related warning when running Memgraph v2.8.0 in WSL installed using binary for Ubuntu 22.04

I get NetworkX related warning when running Memgraph v2.8.0 in WSL installed using binary for Ubuntu 22.04 Once I start Memgraph, they I see this: Please install networkx to be able to use wcc module. Using Python: 3.10.6 (main, May 29 2023,…
Siaka Glen
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Is there a native Windows build of Memgraph?

I've checked the download page for Memgraph, and I can see that Memgraph Lab exist as native app. The same goes for mgconsole. Is there a native build of memgraphdb for Windows? I can see only the Docker one. I've also checked the Memgraph…
Siaka Glen
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