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I'm looking for something similar to the MySQL ( SHOW INDEXES ). I was able to get a list of indexes using py2neo in Python
graphDB = neo4j.GraphDatabaseService() indexes = graphDB.get_indexes(neo4j.Node) print(format(indexes)) but I wanted to know if there's a way to do something similar in Cypher.
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In neo4j you can create index for both property and nodes. Indexing is data structure that helps faster performance on retrieval operation on database. There is special features in neo4j indexing once you create indexing that index will manage itself and keep it up to date whenever changes made on the database.
You typically use cypher-shell to execute Cypher against a user database, but you can also use it to perform some management tasks against the Neo4j instance by accessing the system database.
If you want to get the labels of a specify node, then use labels(node) ; If you only want to get all node labels in neo4j, then use this function instead: call db. labels; , never ever use this query: MATCH n RETURN DISTINCT LABELS(n) . It will do a full table scan, which is very very slow..
Not yet. In Neo4j 2.0 more cypher friendly indexing was introduced and you can issue some DDL commands to create and drop indices and constraints, but as of 2.01 that's it (see docs). In 1.9 you can't define that type of schema with cypher at all.
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There are many ways outside of cypher, for instance
In neo4j-shell you can
index --indexes schema schema ls -l :YourLabel In neo4j-browser you can
:schema :schema ls -l :YourLabel Most APIs that let you execute cypher queries will also provide ways to query schema, such as
GraphDatabaseService.schema().getConstraints() and .getIndexes() for label schemaGraphDatabaseService.index().nodeIndexNames() and .relationshipIndexNames() for legacy indices/db/data/schema/ endpoints for label based schema/db/data/index/node/ and /db/data/index/relationship/ for legacy indices
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