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

mysqlÔ¶³ÌÁ¬½ÓÂýµÄÎÊÌâ »ÆÃöÓñ

ÍøÕ¾µÄÊý¾Ý¿âÊǵ÷ÓÃÔ¶³Ì·þÎñÆ÷ÉϵÄ,²»ÊDZ¾»úµÄ.ÍøÕ¾´ò¿ª±È½ÏÂý.ÔÚÍøÉÏËÑË÷ÁË·½·¨,Õâ¸ö·½·¨¿ÉÒÔ½â¾ö,µ«ÊÇÓÐÁíÍâµÄÎÊÌâ³öÏÖ:
-----------------------------------------------------------------------
ÔÚ¾ÖÓòÍøÄÚÁ¬½ÓÆäËû»úÆ÷µÄMYSQL,·¢ÏÖËÙ¶ÈÂýµÄºÜ,²»ÖªµÀʲôԭÒò,×ÜÓм¸ÃëµÄÑÓ³Ù.
ºóÀ´ÔÚÍøÉÏ·¢ÏÖ½â¾ö·½·¨,my.iniÀïÃæÌí¼Ó
[mysqld]
skip-name-resolve
skip-grant-tables
ÕâÑùËٶȾͿìÁË!
skip-name-resolve
Ñ¡Ïî¾ÍÄܽûÓÃDNS½âÎö£¬Á¬½ÓËÙ¶È»á¿ìºÜ¶à¡£²»¹ý£¬ÕâÑùµÄ»°¾Í²»ÄÜÔÚMySQLµÄÊÚȨ±íÖÐʹÓÃÖ÷»úÃûÁ˶øÖ»ÄÜÓÃip¸ñʽ¡£
ÈôʹÓÖskip-grant-tablesϵͳ½«¶ÔÈκÎÓû§µÄ·ÃÎʲ»×öÈκηÃÎÊ¿ØÖÆ£¬µ«¿ÉÒÔÓà mysqladmin flush-privileges»òmysqladmin reloadÀ´¿ªÆô·ÃÎÊ¿ØÖÆ;ĬÈÏÇé¿öÊÇshow databasesÓï¾ä¶ÔËùÓÐÓû§¿ª·Å£¬
Èç¹ûmysql·þÎñÆ÷ûÓпªÔ¶³ÌÕÊ»§£¬¾ÍÔÚmy.iniÀïÃæ¼ÓÉÏskip-grant-tables
------------------------------------------------------------------
ÔÚMYSQLD¼ÓÈëÁËÄÇÁ½ÌõÃüÁîºó·¢ÏÖϵͳ½«¶ÔÈκÎÓû§µÄ·ÃÎʲ»×öÈκηÃÎÊ¿ØÖÆ.ÕâÑùÓе㲻°²È«,ÏëʹÓà mysqladmin flush-privileges»òmysqladmin reloadÀ´¿ªÆô·ÃÎÊ¿ØÖÆ,µ«ÊDz»ÖªµÀÕâ¸öÃüÁî¼ÓÔÚÄÄÀï.ͬʱ»¹Òª¿ªÆôÒ»¸öÓû§¿ÉÒÔÓзÃÎÊÏÞÖÆ.


Ïà¹ØÎĵµ£º

spring+hibernateÔÚMYSQLϵÄһЩÎÊÌâ

½ñÌìÔÚ°ïÅóÓѵ÷ÊÔÒ»¸ö¹ØÓÚ¶àÏ̷߳ÃÎÊͬһÕűíÒýÆðµÄLock wait timeout exceedeµÄÎÊÌ⣬¸Ð¾õÒýÆðµÄÔ­ÒòÓУº
1£¬Ã»ÓнøÐÐÓÅ»¯£¬¾¡Á¿±ÜÃâ¶àÏß³Ì
2£¬¸ù¾ÝËüºóÃæ±¨µÄÒì³££¬ÌáÐÑÎÒ¿ÉÒÔHibernate µÄSessionûÓÐʹÓõõ±£¬(Ò²ÊÇÎÒ½â¾öµÄ·½°¸)
3£¬ÓÃsynchronizedÐÞÊθüбíµÄº¯Êý
¹À¼ÆÊÇÔ­À´³ÌÐòÔÚÐÞ¸ÄÍê¸Ã±íʱÁ¢¿Ì½øÐÐÁ˲åÈë²Ù× ......

mysql ÔÚwindowϳöÏÖ1067´íÎóµÄ½â¾ö·½·¨

Æô¶¯mysqlµÄ·þÎñ¾­³£·¢ÏÖ1067Õâ¸ö´íÎ󡣲鿴ʼþÈÕÖ¾ÒÔºó·¢ÏÖÏÂÃæµÄ´íÎóÐÅÏ¢
Unknown/unsupported table type: INNODB
ÈçºÎ½â¾ö£ºÔÚmysqlÊý¾Ý´æ·ÅĿ¼ÏÂÕÒµ½ ibdata ÒÔ¼°ib_logfile0¡¢ib_logfile1ɾµôÔÙÆô¶¯¾ÍºÃÁË ......

mysqlÁ÷³Ìº¯Êý

MySQLÖеÄÁ÷³Ìº¯Êý
º¯Êý
¹¦ÄÜ
IF(value,t ,f)
Èç¹ûvalueÎªÕæ£¬·µ»Øt£¬·ñÔò·µ»Øf
IFNULL(value1,value2)
Èç¹ûvalue1²»Îª¿Õ·µ»Øvalue1,·ñÔò·µ»Øvalue2
CASE WHEN [value1] THEN [result1] … ELSE [default] END
Èç¹ûvalue1ÎªÕæ ·µ»Øresult2 ·ñÔò·µ»Ødefault
CASE [expr] WHEN [value1] THEN [result1] &helli ......

php mysql_connect Óëmysql_pconnectº¯ÊýÓëʵÀý½Ì³Ì

php½Ì³Ì mysql½Ì³Ì_connect Óëmysql_pconnectº¯ÊýÓëʵÀý½Ì³Ì
mysql_connect
 mysql_connect($this->root,$this->user,$this->pass)
/*
mysql_connect ,µ¥¸ö·´ÎÊÓû§²»»áƵ·±µÄµ÷ÓÃÊý¾Ý¿â½Ì³Ì£¬Ã»±ØÒª±£³ÖÁ¬½Ó£¬¶øÇÒmysqlµÄÁ¬½ÓÊýÒ²ÊÇÓÐÏÞÖÆµÄ£¬ ʹÓà ¼°Ê±·ÃÎÊ±È½ÏÆµ·±£¬Ò²×îºÃʹÓÃmysql_connect£¬ÕâÑùÊ¹Ó ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ