Am 28.06.2013, 22:45 Uhr, schrieb Michael Bayer <mike...@zzzcomputing.com>:

its a missing feature right now. ideally we can add a rule to MySQL's datetime object that subtraction should return a type that will translate the float to an Interval (I'm guessing it's a number of days).

FWIW the MySQL function timediff might be appropriate:

http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_timediff

Charlie
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