Create EXTERNAL table obd_data_2(
  imei string,
  ts timestamp,
  fuel_instant float,
  gps_speed float,
  gps_status string,
  gps_longitude float,
  gps_latitude float,
  direct_angle float,
  mileage_after int,
  mileage_before int,
  obdspeed int,
  torque int,
  front_xegon_sentor int,
  after_xegon_sentor int,
  air_condition int
)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ','
LOCATION '/user/chen/TexiData/R20140101/'

--制定数据所在的目录,将此目录下的所有文件都可以转入数据库

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