show tables from 库名;查看其他库中的所有表
mysql > show tables;
mysql > show tables from mysql;
5、查看当前库
mysql > select database();
6、查看版本
C:/> mysql -version //进入mysql客户端之前C:/> mysql -V//进入mysql客户端之前
mysql > select version();//进入mysql客户端之后
7、新建一个数据库
mysql > create database spark;
8、建表
mysql > create table customer(id varchar(30),age int, name varchar(30),birthday date);
9、查看表结构
mysql > desc customer;
10、查看表
mysql > select *from customer;
11、查询特定列
mysql > select id,name,sex from student
12、查询数据并进行过滤
mysql > select id,name,sex from student where id =>1003;
13、运算符查询
mysql > select id,name,sex from student where age >=18 and age <=35;
mysql > select id,name,sex from student where age between 18 and 35;
14、查询变种
mysql > select *from student where age =18 or age =35 or age =23
mysql > select *from student where age in(18,23,35);
mysql > select *from student where name like '%小%';
mysql > select *from student where name like '_明%';
mysql > select *from student where email is null;
mysql > select *from student where email is not null;
mysql > select *from student order by age;//升序
mysql > select *from student order by age desc;//降序
尖叫提示:%匹配任意多个字符,_只匹配一个字符
15、插入数据
mysql > insert into student(id,name)values(1001,'小明');
尖叫提示:插入 varchar 或 date 型的数据要用 单引号 引起来
16、修改表
mysql > update student set name='小红' where id =1001;
17、删除表记录
mysql >deletefrom student where id =1001;
18、删除表
mysql > drop table customer;
删除数据库
mysql> drop database girls;