Neo4j：Cypher：如何按图案去除标签？

Question

I have a Neo4j database where each node has labels starting with underscore.

For example, (:User,_User), (:Store,:_Store) etc.

These underscore labels were generated by Spring Data Neo4j and now I want to get rid of them ( call db.schema() returns them as a separate node in the schema).

Goal to get only (:User), (:Store) .

Is there any way to do that with some query?

Answer 1

If you remove the labels that start with underscores (eg _User ) from those nodes and replace them with values without the undescore then calls to db.schema() should no longer return the values.

You could do something like this...

MATCH (n:_User)
SET n:User 
REMOVE n:_User

Updated answer based on feedback. You could do something like this using APOC.

// get all labels that start with underscore
CALL db.labels()
YIELD label AS old_label
WHERE old_label STARTS WITH '_'
WITH old_label, substring(old_label, 1, length(old_label)) AS new_label

// match the nodes for one of the underscore labels
MATCH (n)
WHERE old_label IN labels(n)
WITH old_label, new_label, collect(n) AS relabel_nodes

// call removeLabels with the list of nodes and list od labels to remove
CALL apoc.create.removeLabels(relabel_nodes, [old_label])
YIELD node AS removed_label_node

// call addLabels with the new label to add
WITH removed_label_node, new_label
CALL apoc.create.addLabels(removed_label_node, [new_label])
YIELD node AS added_label_node
RETURN added_label_node