def intervalMinNumber(self, A, queries):
        ret = []
        tree = SegmentTree(A)
        for q in queries:
            ret.append(tree.query(tree.root, q.start, q.end+1))

        return ret
Sets a data type for the value of a specific column.
dataset/ETHPy150Open algorhythms/LintCode/Interval Minimum Number.py/Solution.intervalMinNumber--crossover with--dataset/ETHPy150Open pycassa/pycassa/pycassa/system_manager.py/SystemManager.alter_column