Apache MADLib:
Quote from the homepage[1]
Utilize best of breed database engines, but separate the machine learning
logic from database specific implementation details.
Together with the Prerequisites[2]
MADlib currently supports the following platforms:
* PostgreSQL
* Greenplum database
* Pivotal HDB/Apache HAWQ (incubating)
[1] http://madlib.incubator.apache.org/product.html
[2] https://cwiki.apache.org/confluence/display/MADLIB/Installation+Guide