Neo4j Cypher: Find exact match to array Node property in WHERE clause

Question

Given a Neo4J Node with an array property, how do I create a Cypher query to return only the node(s) that match an array literal?

Using the console I created a node with the array property called "list":

neo4j-sh (0)$ create n = {list: [1,2,3]};
==> +-------------------+
==> | No data returned. |
==> +-------------------+
==> Nodes created: 1
==> Properties set: 1
==> 83 ms

neo4j-sh (0)$ start n=node(1) return n;
==> +-----------------------+
==> | n                     |
==> +-----------------------+
==> | Node[1]{list:[1,2,3]} |
==> +-----------------------+
==> 1 row
==> 1 ms

However, my query does not return the Node that was just created given a WHERE clause that matches an array literal:

neo4j-sh (0)$ start n=node(1) where n.list=[1,2,3] return n;
==> +---+
==> | n |
==> +---+
==> +---+
==> 0 row
==> 0 ms

It's entirely possible I'm mis-using Cypher. Any tips on doing exact array property matching in Cypher would be helpful.

Answer 1

The console is always running the latest SNAPSHOT builds of Neoj4. the version refers to the Cypher Syntax parswer, we will point that out more clearly :)

Now, there has been some fixing around the Array handling in Cypher, see https://github.com/neo4j/community/pull/815 and https://github.com/neo4j/community/issues/818 which problably are the ones that make the console work. This has been merged in after 1.8.M07, so in order to get it work locally, please download one of the latest 1.8.-SNAPSHOT, build it from GITHUB or wait for 1.8.M08 which is due very soon.

/peter

Answer 2

Which version of Neo4j are you using?

Your same code works for me in 1.8M07.

http://console.neo4j.org/?id=p9cy6l

Update: I get the same result (no results) in a local install via the web client. Maybe it's a web client issue?