apoc.map.merge Function APOC Core apoc.map.merge(first,second) - merges two maps Signature apoc.map.merge(first :: MAP?, second :: MAP?) :: (MAP?) Input parameters Name Type Default first MAP? null second MAP? null Usage Examples The following merges two maps: RETURN apoc.map.merge( {name: "Cristiano Ronaldo", dob: date("1985-02-05")}, {country: "Portugal"} ) AS output; Table 1. Results Output { "name": "Cristiano Ronaldo", "country": "Portugal", "dob": "1985-02-05" } apoc.map.groupByMulti apoc.map.mergeList