无法删除neo4j中的节点标签 [英] unable to delete node labels in neo4j

问题描述

我创建了2个标签，人，电影":

I have created 2 labels Person,Movies by :

CREATE (ee:Person { name: "test", id: "1" })

CREATE (m:Movie { name: "movie_1", id: "2" })

当我跑步时:

START n=node(*)
OPTIONAL MATCH (n)-[r]-()
DELETE n,r;

但是标签仍然存在.如何删除标签?

But The Label still exists. How can I delete the label?

推荐答案

因此，您实际上并没有delete为它们remove加上标签(例如，删除m:Movie). delete用于从数据库中删除节点和/或关系.

So, you don't actually delete labels you remove them (e.g. remove m:Movie). delete is used to remove nodes and/or relationships from the database.

以下密码示例将与您的电影节点匹配，删除现有标签，添加一个新标签，然后返回该节点.返回时，您会看到它具有不同的标签.

The following cypher example will match your movie node, remove the existing label, add a new one and return the node. When it is returned you can see that it has a different label.

match (m:Movie) 
remove m:Movie
set m:FavouriteMovie
return m

查看参考卡neo4j.com/docs/stable/cypher-refcard/并搜索REMOVE.

Check out the reference card neo4j.com/docs/stable/cypher-refcard/ and search for REMOVE.

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