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Question

I have the following Cypher query:

MATCH (genre:Genre)<-[:BELONGS_TO]-(t:Title) 
WHERE genre.name IN ["Comedy", "Drama"] 
RETURN t 

Which returns titles that belong to Comedy OR Drama genres. How to change this query in order to return all titles that belong to Comedy AND Drama genres?

Answer 1

SIZE is your friend.

MATCH (t:Title)-[:BELONGS_TO]->(g:Gender) 
WHERE g.name IN ["Comedy", "Drama"] 
WITH t, COLLECT(g) AS g
WHERE SIZE(g) >= x
RETURN t 

x - is number of elements in IN clause