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Mysql常用命令day01


(1)登录

mysql –h 主机名 –u用户名 –p密码

C:/> mysql -h 192.168.1.45 -u root -p root

(2)显示所有数据库

mysql > show databases;

(3)进入指定的数据库

         use 库名;

mysql > use mysql;

(4)查看库中所有表

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 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 > delete from student where id =1001;

(18)删除表

mysql > drop table customer;

删除数据库

mysql> drop database girls

(19)退出

一共三种方式

mysql > exit;

ctrl+C

quit;

 

 

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