1、datetime在dataframe里是 TimestampType
2、参数配置 https://github.com/aliyun/MaxCompute-Spark/wiki/02.-Spark-on-Dataworks?spm=a2c6h.12873639.0.0.1d356e5bFvc3CO&file=02.-Spark-on-Dataworks
val year = args(0)
val month = args(1)
val day = args(2)