What is the lowest 2008-03, when 2012-03 is less than 10.3, when 2010-03 is 8.1, and when 2009-03 is less than 7.3?
SELECT MIN 2008-03 FROM table WHERE 2012-03 < 10.3 AND 2010-03 = 8.1 AND 2009-03 < 7.3