Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Ò»¸öMYsqlÀà

<?php
class mysql {
 /*+++++++++++++++Êý¾Ý¿â·ÃÎÊÀà++++++++++++++++++++++++++
 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 */
   //=================================================
        //Á¬½ÓÊý¾Ý
 private $Host        = "localhost";  //·þÎñÆ÷µØÖ·
 private $Database    = "sansu";       //Êý¾Ý¿âÃû³Æ
 private $User        = "root";       //Óû§Ãû
 private $Password    = "czq339403229";           //Óû§ÃÜÂë
 private $Char_Set    = "utf8";       //ÉèÖÃÊý¾Ý¿â×Ö·û¼¯
       //½á¹ûÊý¾Ý
 public $Link_ID      = 0;            //Êý¾Ý¿âÁ¬½Ó
 public $Query_ID     = 0;            //²éѯ½á¹û
 public $Row_Result   = array();     //½á¹û½Ú×é³ÉµÄÊý×é
 public $Field_Result = array();     //½á¹û¼¯×Ö¶Î×é³ÉµÄÊý×é
// public $Affected_Rows=null;         //Ó°ÏìµÄÐÐÊý
// public $Rows         = null;        //½á¹û¼¯ÐÐÊý
// public $Fields       = null;        //½á¹û¼¯×Ö¶ÎÊý
// public $Row_Position = null;        //¼Ç¼ָÕëλÖÃË÷Òý
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// _______________________________________________________________
  /*
     +++++++++++¹¹Ô캯Êý++++++++++++++++
  +++++++++++++++


Ïà¹ØÎĵµ£º

MYSQLÍâ¼ü(Foreign Key)µÄʹÓÃ


ÔÚMySQL 3.23.44°æ±¾ºó£¬InnoDBÒýÇæÀàÐ͵ıíÖ§³ÖÁËÍâ¼üÔ¼Êø¡£
Íâ¼üµÄʹÓÃÌõ¼þ£º
1.Á½¸ö±í±ØÐëÊÇ
InnoDB±í£¬MyISAM±íÔÝʱ²»Ö§³ÖÍâ¼ü£¨¾Ý˵ÒÔºóµÄ°æ±¾ÓпÉÄÜÖ§³Ö£¬µ«ÖÁÉÙĿǰ²»Ö§³Ö£©£»
2.Íâ¼üÁбØÐ뽨Á¢ÁËË÷Òý£¬MySQL
4.1.2ÒÔºóµÄ°æ±¾ÔÚ½¨Á¢Íâ¼üʱ»á×Ô¶¯´´½¨Ë÷Òý£¬µ«Èç¹ûÔÚ½ÏÔçµÄ°æ±¾ÔòÐèÒªÏÔʾ½¨Á¢£»
3.Íâ¼ü¹ØÏµµ ......

WEB³ÌÐòÔ±ÐèÒªÕÆÎÕµÄÊ®´óMySQLÓÅ»¯¼¼ÇÉ

1.ÓÅ»¯ÄãµÄMySQL²éѯ»º´æ
ÔÚMySQL·þÎñÆ÷ÉϽøÐвéѯ£¬¿ÉÒÔÆôÓøßËÙ²éѯ»º´æ¡£ÈÃÊý¾Ý¿âÒýÇæÔÚºǫ́ÇÄÇĵĴ¦ÀíÊÇÌá¸ßÐÔÄܵÄ×îÓÐЧ·½·¨Ö®Ò»¡£µ±Í¬Ò»¸ö²éѯ±»Ö´Ðжà´Îʱ£¬Èç¹û½á¹ûÊÇ´Ó»º´æÖÐÌáÈ¡£¬ÄÇÊÇÏ൱¿ìµÄ¡£
µ«Ö÷ÒªµÄÎÊÌâÊÇ£¬ËüÊÇÄÇôÈÝÒ×±»Òþ²ØÆðÀ´ÒÔÖÁÓÚÎÒÃÇ´ó¶àÊý³ÌÐòÔ±»áºöÂÔËü¡£ÔÚÓÐЩ´¦ÀíÈÎÎñÖУ¬ÎÒÃÇʵ¼ÊÉÏÊÇ¿ÉÒÔ×è ......

Mysql Êý¾Ý¿â×Ö·û¼¯×ª»»¼°°æ±¾Éý¼¶/½µ¼¶µÄÏêϸ½Ì³Ì

¿´µ½²»ÉÙÓû§·´Ó³×ª»»ÍêÒÔºóÊÇÂÒÂëµÄÇé¿ö,³öÏÖÕâÖÖÏÖÏóµÄÖ÷ÒªÔ­ÒòÊÇÕâÀàÓû§Ê¹ÓõͼÊÇmysql4.1ÒÔÉϵİ汾.ÏÂÃæ×÷Ò»¸ö˵Ã÷,Ï£Íû³öÏÖÕâ¸öÎÊÌâµÄÅóÓѶ¼ÄÜÄÍÐĵİÑÕâ¸öÎĵµ¿´Íê!!!
MySQL 4.1¿ªÊ¼£¬¶Ô¶àÓïÑÔµÄÖ§³ÖÓÐÁ˺ܴó±ä»¯ (Õâµ¼ÖÂÁËÎÊÌâµÄ³öÏÖ)¡£¾¡¹Ü´ó²¿·ÖµÄµØ·½ (°üÀ¨¸öÈËʹÓúÍÖ÷»úÌṩÉÌ)£¬MySQL 3¡¢4.0 ÈÔȻռÖ÷µ¼µØ ......

mysqlÃüÁîÐÐ HAVING×Ó¾ä UNION

ÎÒÔÚmysql ÃüÁîÐÐÕâ¸öϵÁÐÀï½éÉܹýÓÐÌõ¼þ²éѯ£¬ËüÓõ½WHERE×Ӿ䡣µ«ÊÇÓÐʱºòÓÃWHERE×Ó¾äÎÞ·¨¸øÎÒÃǵIJéѯ¼ÓÈëÌõ¼þ£¬±ÈÈçÔÚÉÏÒ»½ÚÎÒÃÇѧϰµÄGROUP BY(°´×é¹éÀà)×Ӿ䣬Èç¹ûÎÒÃÇÒªÔÚ°´×é¹éÀàºó¼ÓÈëÌõ¼þ£¬ÓÃWHERE¾ÍÐв»Í¨£¬ÒòΪWHEREÖ»¿ÉÒÔÔÚ°´×é¹éÀàǰ¼ÓÈëÌõ¼þ¡£ºÃÔÚmysqlÌṩHAVING×Ӿ䣬Ëü¿ÉÒÔ°ïÎÒÃǽâ¾öÕâ¸öÎÊÌâ¡£
ÈçºÎÊ¹Ó ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ