1、timestamp类型转换：
保留到"秒"一级
2、to_date类型转换
- timeStr = "11/27/2013 9:04:34 AM"
- sql = "insert into gcic_t_csv_data(MeasurementStartTime) values( timestamp '%s')"%timeStr
保留到"天"一级
- timeStr = "11/27/2013 9:04:34 AM"
- sql2 = "insert into gcic_t_csv_data(MeasurementStartTime) values( to_date( '%s','MM/DD/YYYY'))"%timeStr
