How to Find the Intersection of Multiple Lists in Cypher with APOC Functions

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How to Find the Intersection of Multiple Lists in Cypher with APOC Functions

If you’re working with Neo4j and using Cypher, you may encounter situations where you need to find the intersection of multiple lists. This can be especially tricky since the built-in functions may not support multiple lists in the way you need. Fortunately, the APOC (Awesome Procedures on Cypher) library offers powerful functions to perform such operations.

Understanding the Problem

Proposed Solution

Step-by-Step Breakdown

Match and Collect Nodes:
Start by matching nodes based on certain conditions. Here we are checking if the labels of the nodes correspond to a predefined list (["Person", "Actor", "Old"]).

[[See Video to Reveal this Text or Code Snippet]]

Collect the Nodes into a List:
This will gather all the relevant nodes into a single list.

[[See Video to Reveal this Text or Code Snippet]]

Reduce to Find Intersection:

[[See Video to Reveal this Text or Code Snippet]]

Complete Code Example

Combining all of these steps, your complete Cypher query will look like this:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Feel free to incorporate this approach into your queries, and take advantage of the powerful functions provided by the APOC library to enhance your data manipulation capabilities in Neo4j!