Collapse nodes to relationships
The APOC library contains a procedure that can be used to collapse a node into a relationship.
Procedure for collapsing nodes
| Qualified Name | Type |
|---|---|
|
Procedure |
Example
The example below will further explain this procedure.
The following creates a graph containing a
Flight node and two Airport nodes (origin and destination)CREATE (flight:Flight {number: "BA001"})
CREATE (origin:Airport {code: "LHR"})
CREATE (destination:Airport {code: "AMS"})
CREATE (flight)<-[:OUT]-(origin)
CREATE (flight)-[:IN]->(destination)
The following query collapses the
Flight node, replacing it with a CONNECTED to relationship:MATCH (flight:Flight {number: "BA001"})
CALL apoc.refactor.collapseNode([flight],'CONNECTED_TO')
YIELD input, output , error
RETURN input, output, errorIf the above query is run, it will result in the following graph:
