SET @current_schema := DATABASE();

SET @modify_sys_game_list_cover_sql := IF(
  EXISTS (
    SELECT 1
    FROM information_schema.columns
    WHERE table_schema = @current_schema
      AND table_name = 'sys_game_list_config'
      AND column_name = 'cover'
  ),
  'ALTER TABLE `sys_game_list_config` MODIFY COLUMN `cover` VARCHAR(1024) DEFAULT NULL COMMENT ''封面图''',
  'SELECT 1'
);

PREPARE modify_sys_game_list_cover_stmt FROM @modify_sys_game_list_cover_sql;
EXECUTE modify_sys_game_list_cover_stmt;
DEALLOCATE PREPARE modify_sys_game_list_cover_stmt;