1.删除没有任何关系的节点

match (n:`专利`) where not(n)-[]-()detach delete n

2.根据id删除节点

MATCH (n) where id(n)=112068 detach delete n

3.查询标签内指定属性节点

MATCH (n:`作者`{name:'克里斯蒂娜·科贝尔-拜斯'}) RETURN n

4.修改标签名

MATCH (n:OLD_LABEL) 
REMOVE n:OLD_LABEL 
SET n:NEW_LABEL

5.合并重复节点

MATCH (n:Tag)
WITH n.name AS name, COLLECT(n) AS nodelist, COUNT(*) AS count
WHERE count > 1
CALL apoc.refactor.mergeNodes(nodelist) YIELD node
RETURN node

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