Şu fonksiyonu kullanarak işlem yapablirsiniz sanırım
SELECT DATE_ADD('2011-12-31 23:59:59', INTERVAL '1:1' MINUTE_SECOND) # '2012-01-01 00:01:00'
yada;
SELECT DATE_ADD('2011-01-01 00:00:00', INTERVAL '-1 10' DAY_HOUR) # '2010-12-30 14:00:00'
SELECT DATE_ADD('2011-12-31 23:59:59', INTERVAL '1:1' MINUTE_SECOND) # '2012-01-01 00:01:00'
yada;
SELECT DATE_ADD('2011-01-01 00:00:00', INTERVAL '-1 10' DAY_HOUR) # '2010-12-30 14:00:00'
