db={"workerlocationcontexts":[{"_id":{"$oid":"615676c885ccad55a493503b"},"updatedAt":{"$date":"2021-10-01T02:47:36.207Z"},"createdAt":{"$date":"2021-10-01T02:47:36.207Z"},"sensor":{"$oid":"6181e5f83fca98374cf901fd"},"worker":{"$oid":"6153dcfb58ad722c747eb42d"},"__v":0}],"locationsensor":[{"_id":{"$oid":"6181e5f83fca98374cf901fd"},"name":"Location Sensor 1","description":"Location sensor for Location 2","location":{"$oid":"6181df3b3fca98374cf901fb"},"trackerType":"RFID","sensorType":"ENVIRONMENT","type":"LOCATION","__v":0}]}

db.workerlocationcontexts.aggregate([{$lookup:{from:"locationsensor",localField:"sensor",foreignField:"_id",as:"test"}}])