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3. ȨÏÞµÄÎÊÌâ £¬mysql µÄȨÏÞÉèÖÃÖÐÓû§µÄÕ˺ÅÓÉ username@hostname Á½²¿·Ö×é³É£¬ aaaa@localhost ºÍ aaaa@www.csdn.net ¶ÔMYSQLÀ´Ëµ²¢²»ÊÇͬһ¸öÓû§ÊÚȨ£¡,ÏÈÊÔ×Å
grant all on *.* to root@%;
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ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

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SQL code:
mysql> use mysql
Database changed
mysql> select host,user from user;
+-----------+-------+
| host | user |
+-----------+-------+
| % | model |
| % | scot |
| localhost | root |
+-----------+-------+
3 rows in set (0.00 sec)

¿´¿´user¶ÔÓ¦µÄhost

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Óû§ Ö÷»ú ÀàÐÍ È¨ÏÞ ÊÚȨ ²Ù×÷
root  % È«¾Ö  ALL PRIVILEGES  ÊÇ 
root  localhost È«¾Ö  ALL PRIVILEGES  ÊÇ 


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ÎÒÊÇÓÃmysql×Ô´øµÄC API
if(mysql_real_connect(&mysql,"125.0.0.108","root","root","home",3306,NULL,0))

AfxMessageBox("Êý¾Ý¿âÁ¬½Óʧ°Ü") ......

MYSQL°²×°Ê§°Ü

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¿ ......

MYSQL Êý¾Ý½ØÈ¡

MYSQL ½ØÈ¡Ò»¸öÊý¾Ý±íÖÐ,ijһ¸ö×Ö¶Î(fulltext) µÄǰÈý°Ù¸ö×Ö·û,·Åµ½¸Ã±íÏÂÁíÒ»¸ö×Ö¶Î(introtxt)Àï.
ÇóʵÏÖÕâ¸öЧ¹ûµÄÃüÁî
SQL code:
update ±í set introtxt=left(`fulltext`,300);

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set global query_cache_size=10; ûÎÊÌâ
set global query_cache_size=4000; Óо¯¸æ
set global query_cache_size=400000; ûÎÊÌâ

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