-- upgrade --
CREATE TABLE IF NOT EXISTS `user` (
    `id` INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
    `username` VARCHAR(32) NOT NULL  COMMENT '和用户名'
) CHARACTER SET utf8mb4;
CREATE TABLE IF NOT EXISTS `aerich` (
    `id` INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
    `version` VARCHAR(255) NOT NULL,
    `app` VARCHAR(20) NOT NULL,
    `content` JSON NOT NULL
) CHARACTER SET utf8mb4;