retrieve data from 2 database

[Jason Drew]

For a start, asking a better question will get better answers:
http://www.catb.org/~esr/faqs/smart-questions.html

Googling for python odbc gives this as the first result:
http://www.python.org/windows/win32/odbc.html

In general, how you compare database tables will depend a lot on the
nature of the tables: e.g. are you comparing names to names, rows to
rows, apples to oranges, etc.?