Ò»¸öMYsqlÀà
<?php
class mysql {
/*+++++++++++++++Êý¾Ý¿â·ÃÎÊÀà++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++
*/
//=================================================
//Á¬½ÓÊý¾Ý
private $Host = "localhost"; //·þÎñÆ÷µØÖ·
private $Database = "sansu"; //Êý¾Ý¿âÃû³Æ
private $User = "root"; //̞
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
Ó¢ÎÄÔÎÄ£º
http://www.packtpub.com/article/visual-mysql-database-design-in-mysql-workbench
ÏÂÃæÊDz¿·Ö·Òë¹ýÀ´µÄ£¬×ªÔØ×Ô£ºhttp://zuolo.info/2008/11/%e4%bd%bf%e7%94%a8-mysql-workbench-%e5%8f%af%e8%a7%86%e5%8c%96%e7%9a%84%e8%ae%be%e8%ae%a1-mysql-%e6%95%b0%e6%8d%ae%e5%ba%93-1%e8%af%91%e6%96%87/
MySQL ......
1¡¢Ñ¡È¡×îÊÊÓõÄ×Ö¶ÎÊôÐÔ
MySQL ¿ÉÒԺܺõÄÖ§³Ö´óÊý¾ÝÁ¿µÄ´æÈ¡£¬µ«ÊÇÒ»°ã˵À´£¬Êý¾Ý¿âÖеıíԽС£¬ÔÚËüÉÏÃæÖ´ÐеIJéѯҲ¾Í»áÔ½¿ì¡£Òò´Ë£¬ÔÚ´´½¨±íµÄʱºò£¬ÎªÁË»ñµÃ¸üºÃµÄÐÔÄÜ£¬ÎÒÃÇ¿ÉÒÔ½«±íÖÐ×ֶεĿí¶ÈÉèµÃ¾¡¿ÉÄÜС¡£ÀýÈ磬ÔÚ¶¨ÒåÓÊÕþ±àÂëÕâ¸ö×Ö¶Îʱ£¬Èç¹û½«ÆäÉèÖÃΪCHAR(255),ÏÔÈ»¸øÊý¾Ý¿âÔö¼ÓÁ˲»±ØÒªµÄ¿Õ¼ä£¬ÉõÖÁʹÓÃV ......
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 ......
ÎÒÔÚmysql ÃüÁîÐÐÕâ¸öϵÁÐÀï½éÉܹýÓÐÌõ¼þ²éѯ£¬ËüÓõ½WHERE×Ӿ䡣µ«ÊÇÓÐʱºòÓÃWHERE×Ó¾äÎÞ·¨¸øÎÒÃǵIJéѯ¼ÓÈëÌõ¼þ£¬±ÈÈçÔÚÉÏÒ»½ÚÎÒÃÇѧϰµÄGROUP BY(°´×é¹éÀà)×Ӿ䣬Èç¹ûÎÒÃÇÒªÔÚ°´×é¹éÀàºó¼ÓÈëÌõ¼þ£¬ÓÃWHERE¾ÍÐв»Í¨£¬ÒòΪWHEREÖ»¿ÉÒÔÔÚ°´×é¹éÀàÇ°¼ÓÈëÌõ¼þ¡£ºÃÔÚmysqlÌṩHAVING×Ӿ䣬Ëü¿ÉÒÔ°ïÎÒÃǽâ¾öÕâ¸öÎÊÌâ¡£
ÈçºÎÊ¹Ó ......
ÎÊÌâÊÇÕâÑùµÄ£º
Ò»ÕÅtestµÄ±í£¬×Ö·û¼¯²ÉÓõÄlatin1¡£
select to_id from test where to_id='cnÏó_Íõ';
+---------------+
| to_id |
+---------------+
| cnÌÕ_ÌÕ |
| cnÏó_Íõ |
+---------------+
2 rows in set (0.00 sec)
È¡cnÏó_ÍõµÄÊý¾Ý,¾ÓÈ»°ÑcnÌÕ_ÌÕµÄÊý¾ÝҲȡ»ØÀ´ÁË¡£
ÕâÏÔÈ»ÊDz»ÔÊÐíµÄ¡£
......