UPDATE unit_gearbox_bearings gearbox_code = #{item.gearboxCode},gearbox_code = null, parallel_wheel_grade = #{item.parallelWheelGrade},parallel_wheel_grade = null, gearbox_bearing_number = #{item.gearboxBearingNumber},gearbox_bearing_number = null, gearbox_bearing_level = #{item.gearboxBearingLevel},gearbox_bearing_level = null, bearing_brand = #{item.bearingBrand},bearing_brand = null, bearing_model = #{item.bearingModel},bearing_model = null, gear_ring_teeth_count = #{item.gearRingTeethCount},gear_ring_teeth_count = null, bearing_rs_brand = #{item.bearingRsBrand},bearing_rs_brand = null, bearing_rs_model = #{item.bearingRsModel},bearing_rs_model = null, bearing_gs_brand = #{item.bearingGsBrand},bearing_gs_brand = null, bearing_gs_model = #{item.bearingGsModel},bearing_gs_model = null, update_by = #{item.updateBy},update_by = null, update_time = #{item.updateTime}update_time = null} WHERE id = #{item.id}