MySql²Ù×÷Àà
×î½üдÁËÒ»¸ö¼òµ¥µÄMysql²Ù×÷À࣬ÄóöÀ´ºÍ´ó¼Ò·ÖÏíһϣ¬»¹Çë¸÷λ¸ßÊÖÖ¸ÕýÒ»ÏÂÎö¹¹º¯ÊýµÄÓ÷¨£º
<?php
/*
* Created on 2010-5-25
*
* To change the template for this generated file go to
* Window - Preferences - PHPeclipse - PHP - Code Templates
*
* class mysql
* made by S71ENCE
*/
class mysql
{
private $host;//Ö÷»úÃû
private $name;//Óû§Ãû
private $pwd;//ÃÜÂë
private $dataBase;//Êý¾Ý¿âÃû
private $coding;//±àÂë
//³õʼ»¯
function __construct($host,$name,$pwd,$dataBase,$coding)
{
$this->host=$host;
$this->name=$name;
$this->pwd=$pwd;
$this->dataBase=$dataBase;
$this->coding=$coding;
$this->connect();//³õʼ»¯Á¬½Ó
}
/*********************************************************************************************
* Êý¾Ý¿â
* »ù±¾·½·¨
********************************************************************************************/
//Êý¾Ý¿âÁ¬½Ó
function connect()
{
$link=mysql_connect($this->host,$this->name,$this->pwd) or die($this-error());
mysql_select_db($this->dataBase,$link) or die("ÎÞ·¨Á¬½ÓÊý¾Ý¿â".$this->dataBase);
mysql_query("set names '$this->coding'");
}
//´íÎóÐÅÏ¢
function error()
{
return mysql_error
Ïà¹ØÎĵµ£º
×òÌìÓиö¹¦ÄÜҪʵÏÖÅÅÐÐЧ¹û£¬¶øÇÒÊÇËæ»ú°´ÕÕijЩ×ֶεÄ×ÜÖµ£¬µ«ÊǵÚÒ»¸öÓÖÒª²»Ò»Ñù£¬ÒòΪµÚÒ»¸öÈ˸øÁËÇ®£¬ËùÒÔÒªÅŵÚÒ»¡£
´ò¸ö±È·½°É£¬±í(userinfo)ÖÐÓÐÕ⼸¸ö×ֶΣºusername,isvalid,givedmoney,sumip,dayip,monthip,visitcount,regdate
ÏÖÔÚҪʵÏÖÏÔʾÅÅÐÐǰ10λÓû§£¬
³öÏÖÔÚÅÅÐеÚһλµ ......
°²×°ÅäÖÃmysql
http://edu.codepub.com/2009/1213/18710.php
Ò»¡¢
ÏÂÔØ±àÒë°²×°
#cd /usr/local/src/
#wget http://mysql.byungsoo.net/Downloads/MySQL-5.1/mysql-5.1.38.tar.gz
#tar –xzvf mysql-5.1.38.tar.gz ../software/
#./configure
--prefix=/usr/local/mysql //MySQL°²×°Ä¿Â¼
--datadir=/mydata / ......
³£ÓõÄ:
µ¼³ö
mysqldump -hyour_host -uyour_username -pyour_password database_name > file.sql
µ¼Èë
mysql -hyour_host -uyour_username -pyour_password database_name < file.sql
»òÕßÏÈÓÃmysql¿Í»§¶ËµÇ½ºó£¬
>\. file.sql
Ò²¿ÉÒÔÍê³Éµ¼È빦ÄÜ
ÉÏÃæµÄÁ½¸öÃüÁî½áºÏÆðÀ´Ó㬿ÉÒÔÍê³É½«Ò»¸öÊý¾Ý¿âµÄ ......
MySQLÊý¾Ý¿âÈÕÖ¾
selectÈÕÖ¾
slow selectÈÕÖ¾
±ä¸üÈÕÖ¾
¶þ½øÖƱä¸üÈÕÖ¾(binlog)
¸æ¾¯ÈÕÖ¾
´íÎóÈÕÖ¾¡£
¿ÉÒÔÔÚmy.cnfÖÐÅäÖÃ
²ÎÊý
˵Ã÷
log
Îı¾selectÈÕÖ¾£¬¼ÇÏÂËùÓеÄMySQLµÄÃüÁî²Ù×÷£¬
log-update
Îı¾±ä¸üÈÕÖ¾
log-bin
Õâ¸ö¶¼ÖªµÀÁË£¬Êý¾Ý¿â¸´ÖƵÄʱºò±Ø±¸
binlog_cache_size
ÁÙʱ´æ·Åij´ÎÊÂÎñµÄSQL ......
ǰ׺Ë÷Òý
(1)Èç¹ûÒÔ¶à¸ö×Ö¶Î×÷ΪË÷Òý£¨a,b£¬c)×÷Ϊһ¸ökey,ÔÚ²éѯʱ·Ö¸ù¾ÝÆ¥ÅäÇé¿öÊÇ·ñʹÓÃË÷Òý£¬ËùÒÔ£¬a/ a,b/ a,b,cÕâÑùµÄ²éѯ¶¼ÄÜʹÓõ½£¬µ«ÊÇb,a/a,c/c,aµÈ²»·û֪ǰ׺ƥÅä¾Í²»ÄÜʹÓã¬ËùÒÔÔÚдsqlʱÐèҪעÒâ
(2)¶ÔÓںܳ¤µÄ×Ö·û´®ÐèÒªÉú³Ékeyʱ£¬¿ÉÒÔÕÒ³ö×ʹÓõÄ×Ö·û´®µÄ×î³£¼ûǰ׺(ǰN¸ö×ÖÌõ×÷Ϊkey,¶ø²»Êǽ ......