创建数据库

CREATE DATABASE IF NOT EXISTS student;
USE student;
CREATE TABLE xs(
id CHAR(10) NOT NULL PRIMARY KEY ,  -- 主键
NAME VARCHAR(20) NOT NULL ,
chusheng DATE);
SELECT *FROM xs;
INSERT INTO xs(id,NAME,chusheng) VALUES('xx201718','zhangsan','2000-1-1');-- 插入到表的数据
SELECT *FROM xs;

　　

CREATE DATABASE IF NOT EXISTS lanhaicheng DEFAULT CHARACTER SET utf8;-- 默认字符集为为utf8(DEFAULT CHARACTER SET utf8) 
show database；

注释--后加空格

　　

ALTER DATABASE lanhaicheng DEFAULT CHARACTER SET gbk;-- 修改数据库默认字符集gb2312