Cypher matching with labels doesn't return any results on Neo4j 2.1.6

Question

ok i am really new in neo4j. However, this simple thing it doesn't work for some reason!!

This statement return 0 rows!

Match (a:Movie) Return a limit 25

This statement return 0 rows!

Match (a:Person) Return a limit 25

However, if i do this line, i get results:

Match (a) Return a limit 25

I am using a fresh installed Neo4j 2.1.6 with a data set named "cineasts_12k_movies_50k_actors" taken from http://example-data.neo4j.org/files/cineasts_12k_movies_50k_actors.zip?_ga=1.201211559.867824426.1420106902 with allow_store_upgrade=true

So i am not sure if i am doing something wrong or there is a bug when i query using labels!

Answer 1

By looking at the graph.db store files, it seems like this dataset is for a legacy version of Neo4j and does not use labels.

I have manually added the labels (Actor Label for actors, and Cineast labels for directors) and rezipped the db and you can download it from my dropbox. https://www.dropbox.com/s/sxl0kxgw9t4iula/graph.db.zip?dl=0

I will pass this issue to Neo4j staff and we'll try to make a new release of the dataset.

In the meantime I can propose you to try Graphgen http://graphgen.neoxygen.io for generating a test graph and import it in your neo4j local instance.

Rik wrote a nice article about it here : http://blog.bruggen.com/2014/12/prototyping-graph-database.html

Also you can use the Movie Graph available in the start page of your neo4j instance browser.