text: /**
   * Existing data w/o this column isn't that useful so may as well purge
   * and then reprocess to get good data into the tables.
   */
  DELETE FROM fieldkit.module_sensor;
  DELETE FROM fieldkit.station_module;
  
  ALTER TABLE fieldkit.station_module ADD COLUMN module_index INTEGER NOT NULL;
  ALTER TABLE fieldkit.module_sensor RENAME COLUMN position TO sensor_index;
  