pydata/pandas — pull request #7076 by jorisvandenbossche (2014-05-08 14:43:56+00:00)
Title: FIX sql handling of timedelta64 columns (GH6921)

Closes #6921

Converting to an int was actually also how it was now with sqlite DBAPI fallback (as timedelta64 is subclass of integer), so this solution is also backwards compatible and consistent between sqlalchemy and fallback mode.