Windows7下MySQL5.5.20免安装版的配置
2013-01-11 19:29
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Windows7下MySQL5.5.20免安装版的配置
博客分类:
MySQL
MySQL Windows安装包说明:
1、mysql-5.5.20-win32.msi:Windows 安装包,图形化的下一步下一步的安装。
2、mysql-5.5.20.zip,这个是windows源文件,需要编译,对应的Linux源文件是mysql-5.5.20.tar.gz
3、mysql-5.5.20-win32.zip,这个文件解包后即可使用,是编译好的windows32位Mysql。
1、下载mysql-5.5.20-win32.zip,解压到D:\,D盘就会出现mysql-5.5.20-win32目录
2、配置MYSQL的环境变量
新增系统变量MYSQL_HOME: D:\mysql-5.5.20-win32
在PATH变量的最后面添加: ;%MYSQL_HOME%\bin
保存即可。
3、打开文件my-huge.ini另存为my.ini,删除my.ini中的所有配置,在my.ini文件中加入如下简单配置:(my.ini是保存在与my-huge.ini同一个目录下的)(#表示注释)
Mysql代码
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
#设置mysql客户端的字符集
default-character-set = utf8
# The MySQL server
[mysqld]
port = 3306
#设置mysql的安装目录
basedir = D:\mysql-5.5.20-win32
#设置mysql数据库的数据存放目录,必须是data或者\xxx-data
datadir = D:\mysql-5.5.20-win32\data
#设置服务器段的字符集
character_set_server = utf8
4、注册服务
运行-->cmd,输入命令:
Mysql代码
mysqld --install mysql --defaults-file=d:\mysql-5.5.20-win32\my.ini
或着,
运行-->cmd,输入命令:
Mysql代码
mysqld --install mysql
删除服务:
Mysql代码
sc delete mysql
在“服务”中就会出现mysql这一项。
5、启动服务:
Mysql代码
net start mysql
停止服务:
Mysql代码
net stop mysql
6、服务启动后:
登录MySQL服务器:
命令格式:
Mysql代码
mysql -h hostname -u username -p
或
Mysql代码
mysql -hhostname -uusername -p
命令说明:mysql命令将调用MySQL监视程序,这是一个可以将我们连接到MySQL服务器端的客户端命令行工具。
选项说明:
-h选项:用于指定所希望连接的主机,即运行MySQL服务器的机器。如果在运行MySQL服务器的机器上运行该命令,则可以忽略该选项和hostname参数;如果不是,必须用运行MySQL服务器的主机名称来代替主机名称参数。
-u命令:用于指定连接数据库时使用的用户名称。
-p命令:用于指定用户输入的密码
此时我本机安装了MYSQL,可忽略该选项和hostname参数:
Mysql代码
mysql -uroot -p
注:
MySQL的管理员用户名为root,密码默认为空
修改root密码
MySQL配置好后,启动成功,默认密码是空,但是为了安全,设置密码(MySQL有一个默认用户名为root,密码自己设定:假如设为root)。
1)登录MySQL root用户:
打开命令行,执行:
Mysql代码
mysql -uroot -p
2)修改root密码:
Mysql代码
mysql> update mysql.user set password="root" where User="root";
mysql> flush privileges;
修改该修改密码的语句:update mysql.user set password="root" where User="root";
为: update mysql.user set password=password("root") where User="root";
详细说明:见最底下的补充说明。
以后再进入MySQL,则为:
Mysql代码
mysql -uroot -proot
7、常用命令:
Mysql代码
show databases;--显示数据库
use databasename; --用数据库
show tables;--显示表
create table tablename(field-name-1 fieldtype-1 modifiers,field-name-2 fieldtype-2 modifiers,....);--创建表
alter table tablename add new-fielname new fieldtype--为表加入新列
insert into tablename(fieldname-1,fieldname-2,fieldname-n)valuse(value-1,value-2,value-n)--增
delete from tablename where fieldname=value--删
update tablename set fieldname=new-value where id=1--改
select * from tablename--查
desc tablename--表定义描述
show create table tablename--可以查看引擎
alter table tablename engine=InnoDB--修改引擎
create table tablename(id int(11),name varchar(10) )type=INNODB--建表是设置引擎
8、例如:
(1)登录MySQL服务器后,查看当前时间,登录的用户以及数据库的版本
Mysql代码
mysql> select now(),user(),version();
+---------------------+----------------+-----------+
| now() | user() | version() |
+---------------------+----------------+-----------+
| 2012-02-26
20:29:51 | root@localhost |
5.5.20 |
+---------------------+----------------+-----------+
1 row in set (0.00 sec)
(2)显示数据库列表
Mysql代码
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.03 sec)
(3)新增数据库并查看
Mysql代码
mysql> create database test_db;
Query OK, 1 row affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
| test_db |
+--------------------+
5 rows in set (0.00 sec)
(4)选择数据库
Mysql代码
mysql> use test_db; Database changed
查看已选择的数据库:
Mysql代码
mysql> select database();
+------------+
| database() |
+------------+
| test_db |
+------------+
1 row in set (0.00 sec)
(5)显示当前数据库的所有数据表
Mysql代码
mysql> show tables; Empty set (0.00 sec)
(6)新建数据表并查看
Mysql代码
mysql> create table person( -> id int, -> name varchar(20), -> sex char(1), -> birth date -> ); Query OK, 0 rows affected (0.09 sec)
Mysql代码
mysql> show tables;
+-------------------+
| Tables_in_test_db |
+-------------------+
| person |
+-------------------+
1 row in set (0.00 sec)
(7)获取表结构
Mysql代码
mysql> desc person;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(1) | YES | | NULL | |
| birth | date | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
4 rows in set (0.01 sec)
或者
Mysql代码
mysql> describe person;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(1) | YES | | NULL | |
| birth | date | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
4 rows in set (0.01 sec)
(8)查询表中的数据
Mysql代码
mysql> select * from person; Empty set (0.00 sec)
(9)插入数据
Mysql代码
mysql> insert into person(id,name,sex,birth)
-> values(1,'zhangsan','1','1990-01-08');
Query OK, 1 row affected (0.04 sec)
查询表中的数据:
Mysql代码
mysql> select * from person;
+------+----------+------+------------+
| id | name | sex | birth |
+------+----------+------+------------+
| 1 | zhangsan | 1 |
1990-01-08 |
+------+----------+------+------------+
1 row in set (0.00 sec)
(10)修改字段的类型
Mysql代码
mysql> alter table person modify sex char(8);
Query OK, 1 row affected (0.17 sec)
Records: 1 Duplicates: 0 Warnings:
0
查看字段描述:
Mysql代码
mysql> desc person;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
4 rows in set (0.01 sec)
(11)新增一个字段
Mysql代码
mysql> alter table person add(address varchar(50));
Query OK, 1 row affected (0.27 sec)
Records: 1 Duplicates: 0 Warnings:
0
查看字段描述:
Mysql代码
mysql> desc person;
+---------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+---------+-------------+------+-----+---------+-------+
5 rows in set (0.01 sec)
(12)更新字段内容
查看修改前表的内容:
Mysql代码
mysql> select * from person;
+------+----------+------+------------+---------+
| id | name | sex | birth | address |
+------+----------+------+------------+---------+
| 1 | zhangsan | 1 |
1990-01-08 | NULL |
+------+----------+------+------------+---------+
1 row in set (0.00 sec)
修改:
Mysql代码
mysql> update person set name='lisi' where id=1;
Query OK, 1 row affected (0.04 sec)
Rows matched: 1 Changed: 1 Warnings:
0
mysql> select * from person;
+------+------+------+------------+---------+
| id | name | sex | birth | address |
+------+------+------+------------+---------+
| 1 | lisi | 1 |
1990-01-08 | NULL |
+------+------+------+------------+---------+
1 row in set (0.00 sec)
mysql> update person set sex='man',address='China' where id=1;
Query OK, 1 row affected (0.04 sec)
Rows matched: 1 Changed: 1 Warnings:
0
mysql> select * from person;
+------+------+------+------------+---------+
| id | name | sex | birth | address |
+------+------+------+------------+---------+
| 1 | lisi | man | 1990-01-08 | China |
+------+------+------+------------+---------+
1 row in set (0.00 sec)
为了方便下面测试删除数据,在向person表中插入2条数据:
Mysql代码
mysql> insert into person(id,name,sex,birth,address)
-> values(2,'wangwu','man','1990-01-10','China');
Query OK, 1 row affected (0.02 sec)
mysql> insert into person(id,name,sex,birth,address)
-> values(3,'zhangsan','man','1990-01-10','China');
Query OK, 1 row affected (0.04 sec)
mysql> select * from person;
+------+----------+------+------------+---------+
| id | name | sex | birth | address |
+------+----------+------+------------+---------+
| 1 | lisi | man | 1990-01-08 | China |
| 2 | wangwu | man | 1990-01-10 | China |
| 3 | zhangsan | man | 1990-01-10 | China |
+------+----------+------+------------+---------+
3 rows in set (0.00 sec)
(13)删除表中的数据
删除表中指定的数据:
Mysql代码
mysql> delete from person where id=2;
Query OK, 1 row affected (0.02 sec)
mysql> select * from person;
+------+----------+------+------------+---------+
| id | name | sex | birth | address |
+------+----------+------+------------+---------+
| 1 | lisi | man | 1990-01-08 | China |
| 3 | zhangsan | man | 1990-01-10 | China |
+------+----------+------+------------+---------+
2 rows in set (0.00 sec)
删除表中全部的数据:
Mysql代码
mysql> delete from person;
Query OK, 2 rows affected (0.04 sec)
mysql> select * from person; Empty set (0.00 sec)
(14)重命名表
查看重命名前的表名:
Mysql代码
mysql> show tables;
+-------------------+
| Tables_in_test_db |
+-------------------+
| person |
+-------------------+
1 row in set (0.00 sec)
重命名:
Mysql代码
mysql> alter table person rename person_test;
Query OK, 0 rows affected (0.04 sec)
mysql> show tables;
+-------------------+
| Tables_in_test_db |
+-------------------+
| person_test |
+-------------------+
1 row in set (0.00 sec)
(15)新增主键
Mysql代码
mysql> alter table person_test add primary key(id);
Query OK, 0 rows affected (0.11 sec)
Records: 0 Duplicates: 0 Warnings:
0
mysql> desc person_test;
+---------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| id | int(11) | NO | PRI | 0 | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+---------+-------------+------+-----+---------+-------+
5 rows in set (0.00 sec)
删除主键:
Mysql代码
mysql> alter table person_test drop primary key;
Query OK, 0 rows affected (0.18 sec)
Records: 0 Duplicates: 0 Warnings:
0
mysql> desc person_test;
+---------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| id | int(11) | NO | | 0 | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+---------+-------------+------+-----+---------+-------+
5 rows in set (0.01 sec)
(16)删除表
Mysql代码
mysql> drop table person_test;
Query OK, 0 rows affected (0.04 sec)
mysql> show tables; Empty set (0.00 sec)
(17)删除数据库
Mysql代码
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
| test_db |
+--------------------+
5 rows in set (0.00 sec)
mysql> drop database test_db;
Query OK, 0 rows affected (0.11 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)
(18)查看建表语句
Mysql代码
mysql> show create table table_name;
补充说明:
update mysql.user set password="root" where User="root";修改的不是密码,如果按照这个方式修改了,重新登录时将会报错:
Mysql代码
mysql> update mysql.user set password="root" where User="root";
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings:
0
mysql> exit
Bye
C:\Users\liqiong>mysql -uroot -p
Enter password: ****
ERROR 1045 (28000): Access denied for user
'root'@'localhost' (using password: Y
ES)
请按照以下方式重新修改密码,即可登录成功:
Mysql代码
C:\Users\liqiong>mysql -uroot
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.5.20 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type
'\c' to clear the current input statement.
mysql> update mysql.user set password=password("root") where User="root";
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings:
0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye
C:\Users\liqiong>mysql -uroot -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.5.20 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type
'\c' to clear the current input statement.
mysql>
Windows7下MySQL5.5.20免安装版的配置
博客分类:
MySQL
MySQL Windows安装包说明:
1、mysql-5.5.20-win32.msi:Windows 安装包,图形化的下一步下一步的安装。
2、mysql-5.5.20.zip,这个是windows源文件,需要编译,对应的Linux源文件是mysql-5.5.20.tar.gz
3、mysql-5.5.20-win32.zip,这个文件解包后即可使用,是编译好的windows32位Mysql。
1、下载mysql-5.5.20-win32.zip,解压到D:\,D盘就会出现mysql-5.5.20-win32目录
2、配置MYSQL的环境变量
新增系统变量MYSQL_HOME: D:\mysql-5.5.20-win32
在PATH变量的最后面添加: ;%MYSQL_HOME%\bin
保存即可。
3、打开文件my-huge.ini另存为my.ini,删除my.ini中的所有配置,在my.ini文件中加入如下简单配置:(my.ini是保存在与my-huge.ini同一个目录下的)(#表示注释)
Mysql代码
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
#设置mysql客户端的字符集
default-character-set = utf8
# The MySQL server
[mysqld]
port = 3306
#设置mysql的安装目录
basedir = D:\mysql-5.5.20-win32
#设置mysql数据库的数据存放目录,必须是data或者\xxx-data
datadir = D:\mysql-5.5.20-win32\data
#设置服务器段的字符集
character_set_server = utf8
# The following options will be passed to all MySQL clients [client] #password = your_password port = 3306 #设置mysql客户端的字符集 default-character-set = utf8 # The MySQL server [mysqld] port = 3306 #设置mysql的安装目录 basedir = D:\mysql-5.5.20-win32 #设置mysql数据库的数据存放目录,必须是data或者\xxx-data datadir = D:\mysql-5.5.20-win32\data #设置服务器段的字符集 character_set_server = utf8
4、注册服务
运行-->cmd,输入命令:
Mysql代码
mysqld --install mysql --defaults-file=d:\mysql-5.5.20-win32\my.ini
mysqld --install mysql --defaults-file=d:\mysql-5.5.20-win32\my.ini
或着,
运行-->cmd,输入命令:
Mysql代码
mysqld --install mysql
mysqld --install mysql
删除服务:
Mysql代码
sc delete mysql
sc delete mysql
在“服务”中就会出现mysql这一项。
5、启动服务:
Mysql代码
net start mysql
net start mysql
停止服务:
Mysql代码
net stop mysql
net stop mysql
6、服务启动后:
登录MySQL服务器:
命令格式:
Mysql代码
mysql -h hostname -u username -p
mysql -h hostname -u username -p
或
Mysql代码
mysql -hhostname -uusername -p
mysql -hhostname -uusername -p
命令说明:mysql命令将调用MySQL监视程序,这是一个可以将我们连接到MySQL服务器端的客户端命令行工具。
选项说明:
-h选项:用于指定所希望连接的主机,即运行MySQL服务器的机器。如果在运行MySQL服务器的机器上运行该命令,则可以忽略该选项和hostname参数;如果不是,必须用运行MySQL服务器的主机名称来代替主机名称参数。
-u命令:用于指定连接数据库时使用的用户名称。
-p命令:用于指定用户输入的密码
此时我本机安装了MYSQL,可忽略该选项和hostname参数:
Mysql代码
mysql -uroot -p
mysql -uroot -p
注:
MySQL的管理员用户名为root,密码默认为空
修改root密码
MySQL配置好后,启动成功,默认密码是空,但是为了安全,设置密码(MySQL有一个默认用户名为root,密码自己设定:假如设为root)。
1)登录MySQL root用户:
打开命令行,执行:
Mysql代码
mysql -uroot -p
mysql -uroot -p
2)修改root密码:
Mysql代码
mysql> update mysql.user set password="root" where User="root";
mysql> flush privileges;
mysql> update mysql.user set password="root" where User="root"; mysql> flush privileges;
修改该修改密码的语句:update mysql.user set password="root" where User="root";
为: update mysql.user set password=password("root") where User="root";
详细说明:见最底下的补充说明。
以后再进入MySQL,则为:
Mysql代码
mysql -uroot -proot
mysql -uroot -proot
7、常用命令:
Mysql代码
show databases;--显示数据库
use databasename; --用数据库
show tables;--显示表
create table tablename(field-name-1 fieldtype-1 modifiers,field-name-2 fieldtype-2 modifiers,....);--创建表
alter table tablename add new-fielname new fieldtype--为表加入新列
insert into tablename(fieldname-1,fieldname-2,fieldname-n)valuse(value-1,value-2,value-n)--增
delete from tablename where fieldname=value--删
update tablename set fieldname=new-value where id=1--改
select * from tablename--查
desc tablename--表定义描述
show create table tablename--可以查看引擎
alter table tablename engine=InnoDB--修改引擎
create table tablename(id int(11),name varchar(10) )type=INNODB--建表是设置引擎
show databases;--显示数据库 use databasename; --用数据库 show tables;--显示表 create table tablename(field-name-1 fieldtype-1 modifiers,field-name-2 fieldtype-2 modifiers,....);--创建表 alter table tablename add new-fielname new fieldtype--为表加入新列 insert into tablename(fieldname-1,fieldname-2,fieldname-n)valuse(value-1,value-2,value-n)--增 delete from tablename where fieldname=value--删 update tablename set fieldname=new-value where id=1--改 select * from tablename--查 desc tablename--表定义描述 show create table tablename--可以查看引擎 alter table tablename engine=InnoDB--修改引擎 create table tablename(id int(11),name varchar(10) )type=INNODB--建表是设置引擎
8、例如:
(1)登录MySQL服务器后,查看当前时间,登录的用户以及数据库的版本
Mysql代码
mysql> select now(),user(),version();
+---------------------+----------------+-----------+
| now() | user() | version() |
+---------------------+----------------+-----------+
| 2012-02-26
20:29:51 | root@localhost |
5.5.20 |
+---------------------+----------------+-----------+
1 row in set (0.00 sec)
mysql> select now(),user(),version(); +---------------------+----------------+-----------+ | now() | user() | version() | +---------------------+----------------+-----------+ | 2012-02-26 20:29:51 | root@localhost | 5.5.20 | +---------------------+----------------+-----------+ 1 row in set (0.00 sec)
(2)显示数据库列表
Mysql代码
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.03 sec)
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.03 sec)
(3)新增数据库并查看
Mysql代码
mysql> create database test_db;
Query OK, 1 row affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
| test_db |
+--------------------+
5 rows in set (0.00 sec)
mysql> create database test_db; Query OK, 1 row affected (0.00 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | | test_db | +--------------------+ 5 rows in set (0.00 sec)
(4)选择数据库
Mysql代码
mysql> use test_db; Database changed
mysql> use test_db; Database changed
查看已选择的数据库:
Mysql代码
mysql> select database();
+------------+
| database() |
+------------+
| test_db |
+------------+
1 row in set (0.00 sec)
mysql> select database(); +------------+ | database() | +------------+ | test_db | +------------+ 1 row in set (0.00 sec)
(5)显示当前数据库的所有数据表
Mysql代码
mysql> show tables; Empty set (0.00 sec)
mysql> show tables; Empty set (0.00 sec)
(6)新建数据表并查看
Mysql代码
mysql> create table person( -> id int, -> name varchar(20), -> sex char(1), -> birth date -> ); Query OK, 0 rows affected (0.09 sec)
mysql> create table person( -> id int, -> name varchar(20), -> sex char(1), -> birth date -> ); Query OK, 0 rows affected (0.09 sec)
Mysql代码
mysql> show tables;
+-------------------+
| Tables_in_test_db |
+-------------------+
| person |
+-------------------+
1 row in set (0.00 sec)
mysql> show tables; +-------------------+ | Tables_in_test_db | +-------------------+ | person | +-------------------+ 1 row in set (0.00 sec)
(7)获取表结构
Mysql代码
mysql> desc person;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(1) | YES | | NULL | |
| birth | date | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
4 rows in set (0.01 sec)
mysql> desc person; +-------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+-------------+------+-----+---------+-------+ | id | int(11) | YES | | NULL | | | name | varchar(20) | YES | | NULL | | | sex | char(1) | YES | | NULL | | | birth | date | YES | | NULL | | +-------+-------------+------+-----+---------+-------+ 4 rows in set (0.01 sec)
或者
Mysql代码
mysql> describe person;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(1) | YES | | NULL | |
| birth | date | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
4 rows in set (0.01 sec)
mysql> describe person; +-------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+-------------+------+-----+---------+-------+ | id | int(11) | YES | | NULL | | | name | varchar(20) | YES | | NULL | | | sex | char(1) | YES | | NULL | | | birth | date | YES | | NULL | | +-------+-------------+------+-----+---------+-------+ 4 rows in set (0.01 sec)
(8)查询表中的数据
Mysql代码
mysql> select * from person; Empty set (0.00 sec)
mysql> select * from person; Empty set (0.00 sec)
(9)插入数据
Mysql代码
mysql> insert into person(id,name,sex,birth)
-> values(1,'zhangsan','1','1990-01-08');
Query OK, 1 row affected (0.04 sec)
mysql> insert into person(id,name,sex,birth) -> values(1,'zhangsan','1','1990-01-08'); Query OK, 1 row affected (0.04 sec)
查询表中的数据:
Mysql代码
mysql> select * from person;
+------+----------+------+------------+
| id | name | sex | birth |
+------+----------+------+------------+
| 1 | zhangsan | 1 |
1990-01-08 |
+------+----------+------+------------+
1 row in set (0.00 sec)
mysql> select * from person; +------+----------+------+------------+ | id | name | sex | birth | +------+----------+------+------------+ | 1 | zhangsan | 1 | 1990-01-08 | +------+----------+------+------------+ 1 row in set (0.00 sec)
(10)修改字段的类型
Mysql代码
mysql> alter table person modify sex char(8);
Query OK, 1 row affected (0.17 sec)
Records: 1 Duplicates: 0 Warnings:
0
mysql> alter table person modify sex char(8); Query OK, 1 row affected (0.17 sec) Records: 1 Duplicates: 0 Warnings: 0
查看字段描述:
Mysql代码
mysql> desc person;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
4 rows in set (0.01 sec)
mysql> desc person; +-------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+-------------+------+-----+---------+-------+ | id | int(11) | YES | | NULL | | | name | varchar(20) | YES | | NULL | | | sex | char(8) | YES | | NULL | | | birth | date | YES | | NULL | | +-------+-------------+------+-----+---------+-------+ 4 rows in set (0.01 sec)
(11)新增一个字段
Mysql代码
mysql> alter table person add(address varchar(50));
Query OK, 1 row affected (0.27 sec)
Records: 1 Duplicates: 0 Warnings:
0
mysql> alter table person add(address varchar(50)); Query OK, 1 row affected (0.27 sec) Records: 1 Duplicates: 0 Warnings: 0
查看字段描述:
Mysql代码
mysql> desc person;
+---------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+---------+-------------+------+-----+---------+-------+
5 rows in set (0.01 sec)
mysql> desc person; +---------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+-------------+------+-----+---------+-------+ | id | int(11) | YES | | NULL | | | name | varchar(20) | YES | | NULL | | | sex | char(8) | YES | | NULL | | | birth | date | YES | | NULL | | | address | varchar(50) | YES | | NULL | | +---------+-------------+------+-----+---------+-------+ 5 rows in set (0.01 sec)
(12)更新字段内容
查看修改前表的内容:
Mysql代码
mysql> select * from person;
+------+----------+------+------------+---------+
| id | name | sex | birth | address |
+------+----------+------+------------+---------+
| 1 | zhangsan | 1 |
1990-01-08 | NULL |
+------+----------+------+------------+---------+
1 row in set (0.00 sec)
mysql> select * from person; +------+----------+------+------------+---------+ | id | name | sex | birth | address | +------+----------+------+------------+---------+ | 1 | zhangsan | 1 | 1990-01-08 | NULL | +------+----------+------+------------+---------+ 1 row in set (0.00 sec)
修改:
Mysql代码
mysql> update person set name='lisi' where id=1;
Query OK, 1 row affected (0.04 sec)
Rows matched: 1 Changed: 1 Warnings:
0
mysql> select * from person;
+------+------+------+------------+---------+
| id | name | sex | birth | address |
+------+------+------+------------+---------+
| 1 | lisi | 1 |
1990-01-08 | NULL |
+------+------+------+------------+---------+
1 row in set (0.00 sec)
mysql> update person set sex='man',address='China' where id=1;
Query OK, 1 row affected (0.04 sec)
Rows matched: 1 Changed: 1 Warnings:
0
mysql> select * from person;
+------+------+------+------------+---------+
| id | name | sex | birth | address |
+------+------+------+------------+---------+
| 1 | lisi | man | 1990-01-08 | China |
+------+------+------+------------+---------+
1 row in set (0.00 sec)
mysql> update person set name='lisi' where id=1; Query OK, 1 row affected (0.04 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> select * from person; +------+------+------+------------+---------+ | id | name | sex | birth | address | +------+------+------+------------+---------+ | 1 | lisi | 1 | 1990-01-08 | NULL | +------+------+------+------------+---------+ 1 row in set (0.00 sec) mysql> update person set sex='man',address='China' where id=1; Query OK, 1 row affected (0.04 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> select * from person; +------+------+------+------------+---------+ | id | name | sex | birth | address | +------+------+------+------------+---------+ | 1 | lisi | man | 1990-01-08 | China | +------+------+------+------------+---------+ 1 row in set (0.00 sec)
为了方便下面测试删除数据,在向person表中插入2条数据:
Mysql代码
mysql> insert into person(id,name,sex,birth,address)
-> values(2,'wangwu','man','1990-01-10','China');
Query OK, 1 row affected (0.02 sec)
mysql> insert into person(id,name,sex,birth,address)
-> values(3,'zhangsan','man','1990-01-10','China');
Query OK, 1 row affected (0.04 sec)
mysql> select * from person;
+------+----------+------+------------+---------+
| id | name | sex | birth | address |
+------+----------+------+------------+---------+
| 1 | lisi | man | 1990-01-08 | China |
| 2 | wangwu | man | 1990-01-10 | China |
| 3 | zhangsan | man | 1990-01-10 | China |
+------+----------+------+------------+---------+
3 rows in set (0.00 sec)
mysql> insert into person(id,name,sex,birth,address) -> values(2,'wangwu','man','1990-01-10','China'); Query OK, 1 row affected (0.02 sec) mysql> insert into person(id,name,sex,birth,address) -> values(3,'zhangsan','man','1990-01-10','China'); Query OK, 1 row affected (0.04 sec) mysql> select * from person; +------+----------+------+------------+---------+ | id | name | sex | birth | address | +------+----------+------+------------+---------+ | 1 | lisi | man | 1990-01-08 | China | | 2 | wangwu | man | 1990-01-10 | China | | 3 | zhangsan | man | 1990-01-10 | China | +------+----------+------+------------+---------+ 3 rows in set (0.00 sec)
(13)删除表中的数据
删除表中指定的数据:
Mysql代码
mysql> delete from person where id=2;
Query OK, 1 row affected (0.02 sec)
mysql> select * from person;
+------+----------+------+------------+---------+
| id | name | sex | birth | address |
+------+----------+------+------------+---------+
| 1 | lisi | man | 1990-01-08 | China |
| 3 | zhangsan | man | 1990-01-10 | China |
+------+----------+------+------------+---------+
2 rows in set (0.00 sec)
mysql> delete from person where id=2; Query OK, 1 row affected (0.02 sec) mysql> select * from person; +------+----------+------+------------+---------+ | id | name | sex | birth | address | +------+----------+------+------------+---------+ | 1 | lisi | man | 1990-01-08 | China | | 3 | zhangsan | man | 1990-01-10 | China | +------+----------+------+------------+---------+ 2 rows in set (0.00 sec)
删除表中全部的数据:
Mysql代码
mysql> delete from person;
Query OK, 2 rows affected (0.04 sec)
mysql> select * from person; Empty set (0.00 sec)
mysql> delete from person;
Query OK, 2 rows affected (0.04 sec)
mysql> select * from person; Empty set (0.00 sec)
(14)重命名表
查看重命名前的表名:
Mysql代码
mysql> show tables;
+-------------------+
| Tables_in_test_db |
+-------------------+
| person |
+-------------------+
1 row in set (0.00 sec)
mysql> show tables; +-------------------+ | Tables_in_test_db | +-------------------+ | person | +-------------------+ 1 row in set (0.00 sec)
重命名:
Mysql代码
mysql> alter table person rename person_test;
Query OK, 0 rows affected (0.04 sec)
mysql> show tables;
+-------------------+
| Tables_in_test_db |
+-------------------+
| person_test |
+-------------------+
1 row in set (0.00 sec)
mysql> alter table person rename person_test; Query OK, 0 rows affected (0.04 sec) mysql> show tables; +-------------------+ | Tables_in_test_db | +-------------------+ | person_test | +-------------------+ 1 row in set (0.00 sec)
(15)新增主键
Mysql代码
mysql> alter table person_test add primary key(id);
Query OK, 0 rows affected (0.11 sec)
Records: 0 Duplicates: 0 Warnings:
0
mysql> desc person_test;
+---------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| id | int(11) | NO | PRI | 0 | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+---------+-------------+------+-----+---------+-------+
5 rows in set (0.00 sec)
mysql> alter table person_test add primary key(id); Query OK, 0 rows affected (0.11 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> desc person_test; +---------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+-------------+------+-----+---------+-------+ | id | int(11) | NO | PRI | 0 | | | name | varchar(20) | YES | | NULL | | | sex | char(8) | YES | | NULL | | | birth | date | YES | | NULL | | | address | varchar(50) | YES | | NULL | | +---------+-------------+------+-----+---------+-------+ 5 rows in set (0.00 sec)
删除主键:
Mysql代码
mysql> alter table person_test drop primary key;
Query OK, 0 rows affected (0.18 sec)
Records: 0 Duplicates: 0 Warnings:
0
mysql> desc person_test;
+---------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+-------+
| id | int(11) | NO | | 0 | |
| name | varchar(20) | YES | | NULL | |
| sex | char(8) | YES | | NULL | |
| birth | date | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+---------+-------------+------+-----+---------+-------+
5 rows in set (0.01 sec)
mysql> alter table person_test drop primary key; Query OK, 0 rows affected (0.18 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> desc person_test; +---------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+-------------+------+-----+---------+-------+ | id | int(11) | NO | | 0 | | | name | varchar(20) | YES | | NULL | | | sex | char(8) | YES | | NULL | | | birth | date | YES | | NULL | | | address | varchar(50) | YES | | NULL | | +---------+-------------+------+-----+---------+-------+ 5 rows in set (0.01 sec)
(16)删除表
Mysql代码
mysql> drop table person_test;
Query OK, 0 rows affected (0.04 sec)
mysql> show tables; Empty set (0.00 sec)
mysql> drop table person_test;
Query OK, 0 rows affected (0.04 sec)
mysql> show tables; Empty set (0.00 sec)
(17)删除数据库
Mysql代码
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
| test_db |
+--------------------+
5 rows in set (0.00 sec)
mysql> drop database test_db;
Query OK, 0 rows affected (0.11 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | | test_db | +--------------------+ 5 rows in set (0.00 sec) mysql> drop database test_db; Query OK, 0 rows affected (0.11 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.00 sec)
(18)查看建表语句
Mysql代码
mysql> show create table table_name;
mysql> show create table table_name;
补充说明:
update mysql.user set password="root" where User="root";修改的不是密码,如果按照这个方式修改了,重新登录时将会报错:
Mysql代码
mysql> update mysql.user set password="root" where User="root";
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings:
0
mysql> exit
Bye
C:\Users\liqiong>mysql -uroot -p
Enter password: ****
ERROR 1045 (28000): Access denied for user
'root'@'localhost' (using password: Y
ES)
mysql> update mysql.user set password="root" where User="root"; Query OK, 3 rows affected (0.00 sec) Rows matched: 3 Changed: 3 Warnings: 0 mysql> exit Bye C:\Users\liqiong>mysql -uroot -p Enter password: **** ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: Y ES)
请按照以下方式重新修改密码,即可登录成功:
Mysql代码
C:\Users\liqiong>mysql -uroot
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.5.20 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type
'\c' to clear the current input statement.
mysql> update mysql.user set password=password("root") where User="root";
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings:
0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye
C:\Users\liqiong>mysql -uroot -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.5.20 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type
'\c' to clear the current input statement.
mysql>
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