问用neo4j绘制宿舍运动图

EN

CREATE CONSTRAINT ON (s:Student) ASSERT s.studentID IS UNIQUE;
CREATE CONSTRAINT ON (r:Room) ASSERT r.roomID IS UNIQUE;

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///dorm.csv" as line fieldterminator '|'
MERGE (s:Student {studentID: line.SID})
MERGE (r:Room {roomID: line.ROOM})
CREATE (s)-[:VISIT {starttime: apoc.date.parse(line.ENTERS,'s',"dd/MM/yyyy HH:mm"), endtime: apoc.date.parse(line.LEAVES,'s',"dd/MM/yyyy HH:mm")}]->(r);

# What rooms has student x visited and in what order
MATCH (s:Student {studentID: "2"})-[v:VISIT]->(r:Room)
RETURN r.roomID,v.starttime ORDER BY v.starttime;

# What does the movement of students between rooms look like - to which room does students go to when they leave room y
MATCH (s:Student)-[v:VISIT]->(r:Room {roomID: "GREEN"})
WITH s, v
MATCH (s)-[v2:VISIT]->(r2:Room)
WHERE v2.starttime > v.endtime
RETURN s.studentID, r2.roomID, v2.starttime ORDER BY s.studentID, v2.starttime;