SAWarning: SELECT statement has a cartesian product

[xsuchy]

When running python -m pytest -v test.py I get:

test.py::TestsWithApp::test_sqlalchemy_aliased
  /home/msuchy/projects/flask-whooshee/test.py:357: SAWarning: SELECT statement has a cartesian product between FROM element(s) "entry" and FROM element "user".  Apply join condition(s) between each element to resolve.
    self.assertEqual(len(self.User.query.join(alias).whooshee_search('chuck').all()), 3)

test.py::TestsWithInitApp::test_sqlalchemy_aliased
  /home/msuchy/projects/flask-whooshee/test.py:357: SAWarning: SELECT statement has a cartesian product between FROM element(s) "entry_1", "user" and FROM element "entry".  Apply join condition(s) between each element to resolve.
    self.assertEqual(len(self.User.query.join(alias).whooshee_search('chuck').all()), 3)