message: Adding Vertica to installation docs
diff: @@ -208,6 +208,9 @@ Here's a list of some of the recommended packages.
  +---------------+-------------------------------------+-------------------------------------------------+
  | Athena | ``pip install "PyAthenaJDBC>1.0.9"``| ``awsathena+jdbc://`` |
  +---------------+-------------------------------------+-------------------------------------------------+
  +| Vertica | ``pip install | ``vertica+vertica_python://`` |
  +| | sqlalchemy-vertica-python`` | |
  ++---------------+-------------------------------------+-------------------------------------------------+
  Note that many other database are supported, the main criteria being the
  existence of a functional SqlAlchemy dialect and Python driver. Googling
  