MySQL的安装和使用
MySQL （发音为 My Ess Que Ell）是 Tcx 公司（http://www.tcx.se）开发的一个多人使用、多执行绪的 SQL 资料库 Server。MySQL
MySQL
一、MySQL的下载
二、MySQL 的安装
本文所使用的
取得
# cd /usr/local
# tar zxvf mysql-3.22.27.tar.gz
# cd mysql-3.22.27
设定
# ./configure --prefix=/usr/local/mysql \
#--with-charset=big5
开始编译并安装：
# make
# make install
# scripts/mysql_install_db
最后一个步骤是用来产生
三、启动、停止 MySQL
要启动
# /usr/local/mysql/share/mysql.server start
注意在第一次执行前，须将
要停止 MySQL 的方法：
# /usr/local/mysql/bin/mysqladmin shutdown
如果你为
# /usr/local/mysql/bin/mysqladmin -u root -p shutdown
四、管理与使用 MySQL 简介
在你开始前
mysql 的使用语法如下：
mysql [-u username] [-h host] [-p[password]] [dbname]
在你第一次安装好
使用
# /usr/local/mysql/bin/mysql -u root mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 201 to server version: 3.22.27
Type 'help' for help.
mysql>
在下了
（
mysql> update user set password=password('新密码') where user='root';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 2 Changed: 0 Warnings: 0
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
mysql> quit
Bye
注意每个指令后要加上一个分号
在更新
mysql -u root -p新密码
或者是这样，，让
mysql -u root -p
（2）资料库维护
接下来，我们以简单的通讯录资料库作为例子，来介绍如何用 mysql 工具程序来做资料库的维护（新增、授权、资料表维护等）。
首先，以
# /usr/local/mysql/bin/mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 207 to server version: 3.22.27
Type 'help' for help.
mysql> create databae addbook;
Query OK, 1 row affected (0.00 sec)
指定使用
mysql> use addbook;
Database changed
mysql> create table friends (
-> name Char(15),
-> telphone VarChar(20),
-> icq Char(10),
-> address VarChar(30)
-> );
Query OK, 0 rows affected (0.00 sec)
新增几笔资料，并查询看看：
mysql> insert into friends values(
-> );
Query OK, 1 row affected (0.00 sec)
mysql> insert into friends (name, icq, telphone, address ) Values (
-> );
Query OK, 1 row affected (0.01 sec)
mysql> select * from friends;
+-------+----------+----------+--------------+
| name | telphone | icq | address |
+-------+----------+----------+--------------+
| maa | 29016710 | 46243046 | 台北县新庄市 |
| cxlin | 7654321 | 39425893 | 台北县 |
+-------+----------+----------+--------------+
2 rows in set (0.00 sec)
第二个 insert 指令指定了资料栏位的插入顺序，用法较第一个为弹性，而第一个指令必须依资料表建立结构时的顺序插入资料。
更新、删除资料表记录：
mysql> update friends set address = "桃园县" where name = "cxlin";
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select * from friends where name = "cxlin";
+-------+----------+----------+---------+
| name | telphone | icq | address |
+-------+----------+----------+---------+
| cxlin | 7654321 | 39425893 | 桃园县 |
+-------+----------+----------+---------+
1 row in set (0.00 sec)
mysql> delete from friends where name = "maa";
Query OK, 1 row affected (0.01 sec)
mysql> select * from friends;
+-------+----------+----------+---------+
| name | telphone | icq | address |
+-------+----------+----------+---------+
| cxlin | 7654321 | 39425893 | 桃园县 |
+-------+----------+----------+---------+
1 row in set (0.00 sec)
最后，建好资料库与资料表后，把
mysql> grant select, insert, update, delete
-> on addbook.*
-> to maa@localhost identified by '1234567';
Query OK, 0 rows affected (0.00 sec)
之后，可用
# /usr/local/mysql/bin/mysql -u maa -p addbook
Enter password:
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 211 to server version: 3.22.27
Type 'help' for help.
mysql> status
--------------
./mysql Ver 9.36 Distrib 3.22.27, for pc-linux-gnu (i686)
Connection id: 26
Current database: addbook
Current user: maa@localhost
Server version 3.22.27
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /tmp/mysql.sock
Uptime: 2 hours 29 min 33 sec
Threads: 11 Questions: 107 Slow queries: 0 Opens: 11 Flush tables: 1
Open 7
--------------
收回资料库使用权限的方法如下（以 MySQL root 进入）：
mysql> revoke delete on addbook.* from maa@localhost;
Query OK, 0 rows affected (0.00 sec)
mysql> revoke all privileges on addbook.* from maa@localhost;
Query OK, 0 rows affected (0.00 sec)
第二个指令用来收回全部的权限。
