java 如何更新或更改密码 neo4j 中的值
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How to Update or change value in cypher neo4j
提问by agpt
Is there any update query in cypher using which we can update the property of any node or relationship ?
For e.g. I have following node and relationship:
NodeA-[r:relatedTo]-NodeB
where relatedTois a relationship having properties like activeor inactive
cypher 中是否有任何更新查询，我们可以使用它来更新任何节点或关系的属性？
例如，我有以下节点和关系：
NodeA-[r:relatedTo]- NodeB
其中relatedTo是具有活动或非活动等属性的关系
How can I change this property using cypher query ?
如何使用密码查询更改此属性？
回答by agpt
using SETkeyword in cypher query, see http://docs.neo4j.org/chunked/snapshot/query-set.html. (Since I have not came across any update query in cypher like in other RDBMS)
SET在密码查询中使用关键字，请参阅http://docs.neo4j.org/chunked/snapshot/query-set.html。（因为我没有像在其他 RDBMS 中那样在 cypher 中遇到任何更新查询）
NodeA-[r:relatedTo]-NodeB
try to set value by : SET r.<your property name>="<desired value>";before returning any value from start n=node(...)... return n;query.
NodeA-[r:relatedTo]- NodeB在从查询返回任何值之前
尝试通过 : 设置值。SET r.<your property name>="<desired value>";start n=node(...)... return n;
