1 数据库相关操作

CREATE DATABASE IF NOT EXISTS daily-test DEFAULT CHARSET utf8 COLLATE utf8_general_ci；

drop database daily_test;

use daily_test 

 具体操作如下图上所示：

2 mysql常用数据类型

MySQL 数据类型 | 菜鸟教程

3 数据库表相关操作

CREATE TABLE IF NOT EXISTS `runoob_tbl`(
   `runoob_id` INT UNSIGNED AUTO_INCREMENT,
   `runoob_title` VARCHAR(100) NOT NULL,
   `runoob_author` VARCHAR(40) NOT NULL,
   `submission_date` DATE,
   PRIMARY KEY ( `runoob_id` )
)ENGINE=InnoDB DEFAULT CHARSET=utf8;

 drop table runoob_tbl;

 4 数据库表的插入与查询

INSERT INTO runoob_tbl (runoob_title, runoob_author, submission_date) VALUES (" PHP", "", NOW());

 select * from runoob_tbl \G

 select * from runoob_tbl;

5 where子语句