5.cypher语句组合与复杂操作

电影图

CREATE (matrix:Movie {title: 'The Matrix', released: 1997})
CREATE (cloudAtlas:Movie {title: 'Cloud Atlas', released: 2012})
CREATE (forrestGump:Movie {title: 'Forrest Gump', released: 1994})
CREATE (keanu:Person {name: 'Keanu Reeves', born: 1964})
CREATE (robert:Person {name: 'Robert Zemeckis', born: 1951})
CREATE (tom:Person {name: 'Tom Hanks', born: 1956})
CREATE (tom)-[:ACTED_IN {roles: ['Forrest']}]->(forrestGump)
CREATE (tom)-[:ACTED_IN {roles: ['Zachry']}]->(cloudAtlas)
CREATE (robert)-[:DIRECTED]->(forrestGump)

1.UNION操作

2.WITH语句

with语句类似于return可以进行筛选条件，但继续执行语句查询

人物公司图

CREATE (diana:Person {name: "Diana"})
CREATE (melissa:Person {name: "Melissa", twitter: "@melissa"})
CREATE (dan:Person {name: "Dan", twitter: "@dan", yearsExperience: 6})
CREATE (sally:Person {name: "Sally", yearsExperience: 4})
CREATE (john:Person {name: "John", yearsExperience: 5})
CREATE (jennifer:Person {name: "Jennifer", twitter: "@jennifer", yearsExperience: 5})
CREATE (joe:Person {name: "Joe"})
CREATE (mark:Person {name: "Mark", twitter: "@mark"})
CREATE (ann:Person {name: "Ann"})
CREATE (xyz:Company {name: "XYZ"})
CREATE (x:Company {name: "Company X"})
CREATE (a:Company {name: "Company A"})
CREATE (Neo4j:Company {name: "Neo4j"})
CREATE (abc:Company {name: "ABC"})
CREATE (query:Technology {type: "Query Languages"})
CREATE (etl:Technology {type: "Data ETL"})
CREATE (integrations:Technology {type: "Integrations"})
CREATE (graphs:Technology {type: "Graphs"})
CREATE (dev:Technology {type: "Application Development"})
CREATE (java:Technology {type: "Java"})
CREATE (diana)-[:LIKES]->(query)
CREATE (melissa)-[:LIKES]->(query)
CREATE (dan)-[:LIKES]->(etl)<-[:LIKES]-(melissa)
CREATE (xyz)<-[:WORKS_FOR]-(sally)-[:LIKES]->(integrations)<-[:LIKES]-(dan)
CREATE (sally)<-[:IS_FRIENDS_WITH]-(john)-[:LIKES]->(java)
CREATE (john)<-[:IS_FRIENDS_WITH]-(jennifer)-[:LIKES]->(java)
CREATE (john)-[:WORKS_FOR]->(xyz)
CREATE (sally)<-[:IS_FRIENDS_WITH]-(jennifer)-[:IS_FRIENDS_WITH]->(melissa)
CREATE (joe)-[:LIKES]->(query)
CREATE (x)<-[:WORKS_FOR]-(diana)<-[:IS_FRIENDS_WITH]-(joe)-[:IS_FRIENDS_WITH]->
(mark)-[:LIKES]->(graphs)<-[:LIKES]-(jennifer)-[:WORKS_FOR]->(Neo4j)
CREATE (ann)<-[:IS_FRIENDS_WITH]-(jennifer)-[:IS_FRIENDS_WITH]->(mark)
CREATE (john)-[:LIKES]->(dev)<-[:LIKES]-(ann)-[:IS_FRIENDS_WITH]->(dan)-[:WORKS_FOR]->(abc)
CREATE (ann)-[:WORKS_FOR]->(abc)
CREATE (a)<-[:WORKS_FOR]-(melissa)-[:LIKES]->(graphs)<-[:LIKES]-(diana)

1.查找并列出人们喜欢的技术

2.查询拥有其他朋友的朋友数量

MATCH (p:Person)-[:IS_FRIENDS_WITH]->(friend:Person)
WITH p, collect(friend.name) AS friendsList, 
 count{(friend)-[:IS_FRIENDS_WITH]-(:Person)} AS numberOfFoFs
WHERE numberOfFoFs > 1
RETURN p.name, friendsList, numberOfFoFs;

3.参数设置