text: CREATE SCHEMA `radio` DEFAULT CHARACTER SET utf8mb4;
  
  drop table if exists category;
  
  CREATE TABLE `category` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `cat_id` int(11) NOT NULL,
    `name` varchar(20) NOT NULL,
    `create_time` datetime NOT NULL,
    `update_time` datetime NOT NULL,
    PRIMARY KEY (`id`),
    UNIQUE KEY `uk_cat_id` (`cat_id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;