testData = table(1 2 3 4 5 6 7 8 9 10 as `id,1 2 3 4 5 6 7 8 9 10 as `val)
利用val列进行划分，划分成2组，val<=5为第一组，5<val<=10为第二组，然后分组对val求和
testData = table(1 2 3 4 5 6 7 8 9 10 as `id,1 2 3 4 5 6 7 8 9 10 as `val) groupby(sum,testData.val,asof(cutPoints(testData.val,2),testData.val))
