How to add multiple values to a property in neo4j

问题

I am new to neo4j and trying to add multiple values to a property of a node.How to do it?

 create (e:Employee{name:"Sam",languages:["C","C#"]})

Tried this but didn't find any proper way to add multiple values to an attribute.

回答1:

Properties cannot have object values. If you're looking to store multiple properties on language, and those properties all belong to the language and not any other entity, then you should model Language as a node. You can store properties on the relationship between the employee and language as well if required.

Then you'll end up with something like this:

create (l:Language {name:"C", otherProperty:"property value"})
create (e:Employee {name:"Sam"})
create (e)-[:SPEAKS {level:"Fluent"}]->(l)

回答2:

In fact, you can have array values in properties. You should be able to create them like:

CREATE (n:Node { color: ['Red', 'Blue']})
RETURN n

In your case:

CREATE (e:Employee { name:"Sam",languages: ["C", "C#"]})
RETURN e

is working perfectly fine (you can check it in http://console.neo4j.org/)

Keep in mind that all values in the array must be of the same type, only Strings, or Integers, etc. You can find more info here -> http://neo4j.com/docs/stable/rest-api-property-values.html

However that's not the best approach for that particular example given that C and C# are languages that Sam knows, you should have them as different nodes pointed by Sam through some kind of Knows relationship.

来源：https://stackoverflow.com/questions/30842029/how-to-add-multiple-values-to-a-property-in-neo4j

标签

java

neo4j