MySQL中ENGINE = InnoDB AUTO_INCREMENT = 200 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci的作用

CREATE TABLE `permission`  (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `role_id` int(11) NULL DEFAULT NULL COMMENT '角色ID',
  `permission` varchar(63) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '权限',
  `add_time` datetime(0) NULL DEFAULT NULL COMMENT '创建时间',
  `update_time` datetime(0) NULL DEFAULT NULL COMMENT '更新时间',
  `deleted` tinyint(1) NULL DEFAULT 0 COMMENT '逻辑删除',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 20 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci COMMENT = '权限表' ROW_FORMAT = Compact;

ENGINE = InnoDB：使用InnoBD数据库引擎
CHARACTER SET = utf8mb4：permission 表使用的编码是utf8mb4（UTF-8）
COLLATE = utf8mb4_general_ci：指定排序的编码规则utf8mb4_general_ci，utf8mb4编码的默认值为utf8mb4_general_ci
COMMENT：备注
ROW_FORMAT = Compact：指定当前表使用的行记录结构类型为 Compact；

MySQL中ENGINE = InnoDB AUTO_INCREMENT = 200 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci的作用

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