You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: 20220429082601_fix_lexicon_data.rb
    path of file: ./repos/ekylibre/db/migrate
    
    the code of the file until where you have to start completion: class FixLexiconData < ActiveRecord::Migration[5.0]
  def up
    # fix hectoliter unit coefficient
    execute <<~SQL
      UPDATE units SET coefficient = 100.0 WHERE reference_name = 'hectoliter' AND type = 'ReferenceUnit'
    SQL
    # fix tractor indicators natures
    execute <<~SQL
      UPDATE product_natures SET frozen_indicators_list = NULL,
      variable_indicators_list = 'fuel_consumption, geolocation, motor_power, hour_counter, ground_speed'
      WHERE reference_name = 'tractor'
    SQL
    # fix sprayer indicators natures
    execute <<~SQL
      UPDATE
    
  def up
    # fix hectoliter unit coefficient
    execute <<~SQL
      UPDATE units SET coefficient = 100.0 WHERE reference_name = 'hectoliter' AND type = 'ReferenceUnit'
    SQL
    # fix tractor indicators natures
    execute <<~SQL
      UPDATE product_natures SET frozen_indicators_list = NULL,
      variable_indicators_list = 'fuel_consumption, geolocation, motor_power, hour_counter, ground_speed'
      WHERE reference_name = 'tractor'
    SQL
    # fix sprayer indicators natures
    execute <<~SQL
      UPDATE product_natures SET frozen_indicators_list = NULL,
      variable_indicators_list = 'geolocation, application_width, element_count, nominal_storable_net_volume, rows_count, theoretical_working_speed'
      WHERE reference_name = 'sprayer'
    SQL
    # fix vine_crop indicators natures
    execute <<~SQL
      UPDATE product_natures SET frozen_indicators_list = 'net_surface_area',
      variable_indicators_list = 'certification, certification_label, complanted_vine_stock, dead_vine_stock, layered_vine_stock, missing_vine_stock, plants_count, plants_interval, plant_life_state, vine_stock_bud_charge, rows_interval, shape, vine_pruning_system, cut_vine'
      WHERE reference_name = 'vine_crop'
    SQL
  end