Improper handling of DATE, DATETIME, and TIMESTAMP fields

[Raymond]

If improper data is passed to these fields, or they are left blank while set to NOT NULL, MySQL will force their fields all to zero. The type handling code for 'fetchone' is not set up for this possibility, and the datetime module cannot handle such nonsensical dates, so the fetch fails. The old behavior for the MySQLdb module was to return None. Attached patch emulates that behavior.

[Raymond (raymond-wagnerrp)]

The patch is against the latest 0.9.2 tarball.

[J Derek Wilson (underrun)]

i don't think this is a valid solution -- in my use case, sometimes we have date fields with YYYY-00-00 to represent a year if that is as specific as we can get. a better solution would be something like this: https://bugs.launchpad.net/oursql/+bug/1076592