Typically you will not put a "many" property in the select clause but rather in a join()... but if you do you'll get an error.

In the example below "details" is a one to many property on bug.

Query<Bug> query = Ebean.createQuery(Bug.class);
query.select("title, details");
query.findList();

// the above will error...

Query<Bug> query = Ebean.createQuery(Bug.class);
query.select("title");
query.join("details");
query.findList();