实际表
YEAR TOT
---- ---
2001 1
2002 2
2003 3
2010 10
2011 11
2012 12
2013 13
2014 14
2015 15
现在预期结果:
YEAR TOT Exp_res
---- --- -------------------
2001 1 1+2+3+4+5 = 15
2002 2 2+3+4+5+6 = 20
2003 3 3+4+5+6+7 = 25
2010 10 10+11+12+13+14
2011 11 11+12+13+14+15
2012 12 12+13+14+15
2013 13 13+14+15
2014 14 14+15
2015 15 15