It is often very useful to compute some aggregated quantities for the entities in our database, such as the number of friends in a social graph or the total price of an order for an e-commerce website. We will discover here how to do those calculations with Cypher.
Count, sum, and average
In a similar way to SQL, you can compute aggregates with Cypher. The main difference with SQL is that there is no need to use a GROUP BY statement; all fields that are not in an aggregation function will be used to create groups:
MATCH (FL:State {code: "FL"})-[:SHARE_BORDER_WITH]-(n)
RETURN FL.name as state_name, COUNT(n.code) as number_of_neighbors
The result is the following one, as expected:
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