15、sql语句集，Linux 下PHP查询mysql
一、mysql 创建数据库
mysql密码，默认没有
如果想更改的话， mysqladmin -uroot password root123
登录 ： [root@localhost root]# mysql -uroot -proot123
1、创建book数据库
mysql> create database book;
Query OK, 1 row affected (0.08 sec)
2、授权给 lili 用户
mysql> grant all on book.* to lili@localhost identified by "lili123";
Query OK, 0 rows affected (0.06 sec)mysql> exit
Bye
3、lili登录
创建lili用户
[root@localhost html]# mysql -u lili -p
Enter password: （这里输密码）
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5 to server version: 3.23.54Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>
4、创建book表，添加数据
mysql> use book; （先确定要操作的数据库）
Database changed
5、创建book表
mysql> create table book(
-> id int not null,
-> name char(20) not null,
-> primary key(id)
-> );
Query OK, 0 rows affected (0.08 sec)
6、添加数据
mysql> insert into book values
-> (1,"语文"),
-> (2,"数学"),
-> (3,"英语");
Query OK, 3 rows affected (0.00 sec)
Records: 3 Duplicates: 0 Warnings: 0
（注意：上面操作也可以用sql语句集来执行： (好处是，去别的机子也可以执行sql语句集 就行，不用从头打过)
[root@localhost html]# cat > lili.sql
use book;
create table book(
id int not null,
name char(20) not null,
primary key(id)
);
insert into book values
(1,"语文",),
(2,"数学"),
(3,"英语");[root@localhost html]# vi root.sql
create database book;
grant all on book.* to lili@localhost identified by "lili123" ;[root@localhost html]# mysql -u root -p < root.sql
Enter password:[root@localhost html]# mysql -u lili -p < lili.sql
Enter password:
）
7、查询表
mysql> select * from book;
+----+--------+
| id | name |
+----+--------+
| 1 | 语文 |
| 2 | 数学 |
| 3 | 英语 |
+----+--------+
退出mysql
mysql> exit;
Bye
如果想直接命令行查询
[root@localhost root]# echo "select * from book;" | mysql -u lili -p book
Enter password:
id name
1 语文
2 数学
3 英语
二、在 /var/www/html 中 创建index.php
[root@localhost html]# vi index.php
<h1> <?php mysql_connect(NULL,"lili","lili123","localhost"); mysql_selectdb("book"); $sql="select * from book"; $res=mysql_query($sql); while($row=mysql_fetch_row($res)){ print "$row[0] $row[1]<br/>"; } $a=array("阳光","沙滩","海浪","仙人掌"); for($i=0;$i<4;$i++){ print "$a[$i]<br/>"; } ?> </h1>
在浏览器输入 http://192.168.170.3/ , 结果如下：
如果想要网格线
<html> <title> </title> <body> <h1> <?php mysql_connect(NULL,"lili","lili123","localhost"); mysql_selectdb("book"); $sql="select * from book"; $res=mysql_query($sql); print ('<table border=1>'); while($row=mysql_fetch_row($res)){ print ('<tr>'); for($i=0;$i<3;$i++){ print "<td>$row[$i]</td>"; } print ('</tr>'); } print ('</table>'); $a=array("阳光","沙滩","海浪","仙人掌"); for($i=0;$i<4;$i++){ print "$a[$i]<br/>"; } ?> </h1> </body> </html>效果如下：
