ALTER DATABASE `level` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `limit_list_d`
  CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `stock_basic`
  CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `stock_daily`
  CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `stock_limit_combined_data`
  CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `trade_calendar`
  CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

ALTER TABLE `stock_limit_data`
  CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;