Neo4j Cypher匹配找不到应有的节点

Question

Having added nodes with properties "id" and "name"

CREATE (s:subsystem {id: 12, name:"InjectEolCurrentCellSOCs"})
CREATE (s:subsystem {id: 13, name:"InjectEolCellCapacities"})
CREATE (s:subsystem {id: 14, name:"InjectEolCellResistances"})
CREATE (s:subsystem {id: 15, name:"InjectEolCellSOCs"})

This command works/finds the node and returns the requested value:

match(n {id:13}) return (n.name);

But this command does not find a match:

match(n {name:"InjectEolCellCapacities"}) return (n);

Could this be related to the fact that "InjectEolCellCapacities" and "InjectEolCellResistances" have the same first 13 characters ?

Answer 1

If you look at your first imag, you will see that you have saved the data "InjectEolCellCapacities " (there is a space at the end).

So if you want to match it, yu should use this query : MATCH (n:subsystem { name:"InjectEolCellCapacities "}) RETURN n

You can also search all subsystem node that have a name property that starts with InjectEolCellCapacities like this : MATCH (n:subsystem) WHERE n.name STARTS WITH 'InjectEolCellCapacities' RETURN n