querying with an "IN" clause using the index in neo4j with Cypher

Question

I'd like to use my auto_index in neo4j and pass in an array of strings to match against. I know that you can add an IN clause to the end of your cypher query but that doesn't use the indexes and I'm assuming will do a database scan of all the records. What's the best way to do this with an index query?

e.g. Get me users whose facebookId is in ["123", "456", "789"] assuming there is an auto_index on facebookId and there are 1 million user nodes.

Answer 1

I suppose this is worth posting as an answer:

START n=node:node_auto_index('facebookId:("123", "456", "789")')
...

Example: http://console.neo4j.org/r/3mcvr5

Answer 2

You would do this query by having an explicit index lookup, like

start user = node:node_auto_index('facebookId:123 OR facebookId:456') match  ...

http://console.neo4j.org/r/nj98lt for an example.