查看mysql主机名命令_Mysql 常用命令

(1)登录：

mysql -h 主机名 -u 用户名 -p 密码

(2)显示所有数据库：

show databases;

(3)进入指定数据库：

use 库名; 例如：use mysql;

(4)查看库中所有表：

show tables from 库名; 例如：show tables; show tables from mysql;

(5)查看当前库：

select database();

(6)查看版本：

进入mysql客户端之前：mysql -version 或 mysql -V

进入mysql客户端之后：select version();

(7)新建一个数据库：

create database spark(库名);

(8)建表：

create table customer(id varchar(30),age int,name varchar(30),birthday date);

(9)查看表结构：

desc customer;

(10)查看表：

select * from customer；

(11)查询特定列：

select id ,name,sex from student;

(12)查询数据并进行过滤：

select id ,name,sex from student where id =>1003;

(13)运算符查询：

select id,name,sex from student where age >=18 and age <=35;

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

提示：%匹配任意多个字符，_只匹配一个字符

(15)插入数据：

insert into student(id,name)values(1001,'小明')；

(16)修改表：

update student set name='小红' where id = 1001;

(17)删除表记录：

delete from student where id = 1001;

(18)删除表：

drop table customer;

(19)退出：

一共三种方式:

mysql > exit;

mysql > quit;

ctrl+C

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