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

mysql Óαê

¶¨ÒåÓαê 
DECLARE cur_Ãû³Æ CURSOR
FOR
SELECT ×Ö¶Î1,×Ö¶Î2,...×Ö¶În from ±í where ×Ö¶Î1=±äÁ¿;
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET ±äÁ¿1=null,±äÁ¿2=null;
OPEN cur_Ãû³Æ;
FETCH cur_Ãû³Æ INTO ±äÁ¿1,±äÁ¿2...;
WHILE ( ±äÁ¿1  IS NOT NULL) DO
          ...
          FETCH cur_Ãû³Æ INTO ±äÁ¿1,±äÁ¿2...;
END WHILE;
Èç¹ûÓαêµÄÌõ¼þÒª±ä»¯£¬ÔÚ¶¨Òåʱ½«×Ö¶Î1µÈ±äÀí£¬ÔÚ´ò¿ª±äÁ¿ºóΪÏàÓ¦±äÁ¿¸³Öµ¼´¿É¡£


Ïà¹ØÎĵµ£º

Mysql³£ÓÃÃüÁî½Å±¾

Mysql³£ÓÃÃüÁî½Å±¾
µÚÒ»ÕС¢mysql·þÎñµÄÆô¶¯ºÍÍ£Ö¹
net stop mysql
net start mysql
µÚ¶þÕС¢µÇ½mysql
Óï·¨ÊÇ mysql -hÖ÷»ú -uÓû§Ãû -pÃØÃÜ
Àý×ÓÊÇ mysql -hlocalhost -uroot -p123456
Ҫȷ¶¨mysql°²×°Ê±ºò¹´Ñ¡ÁË¿ÉÒÔÔ¶³ÌÁ´½Ó¡£Èç¹ûµÇ½±¾µØ¼ÆËã»ú£¬-h¿ÉÒÔÊ¡ÂÔ£¬¼üÈëÃüÁîmysql -uroot -p£¬ »Ø³µºóÌáʾÄãÊäÈëÃÜÂ룬 ......

linux mysql ÂÒÂëÎÊÌâ

 ½ñÌìÔÚÊý¾Ý¿âÖвåÈëÁËÖÐÎÄ£¬·¢ÏÖÓеÄÊÇÂÒÂ룬ÓеIJ»ÊÇ£¬ºÜÊÇÄÉÃÆ¡£
×îºóÕÒµ½Á˽â¾ö°ì·¨£º
´ò¿ª /etc/mysql/my.cnf
ÔÚ£Ûmysqld]ºÍ£Ûclient]½ÚÏ·ֱðÌí¼Ó:
default-character-set = utf8
È»ºóÖØÐÂÆô¶¯mysql£¬ÐèҪעÒâµÄÊÇ£¬¶ÔÐÞ¸ÄÒÔǰ´´½¨µÄÊý¾Ý¿âÀ´Ëµ£¬ËûµÄ×Ö·û¼¯»¹ÊÇÔ­À´µÄ£¬ËùÒÔ»¹ÊÇ»á³öÏÖÂÒÂí£¬¶øÐ´´½¨µÄÊý¾Ý ......

mysql²Ù×÷ Left join , Right Join, Inner Join


Ò».ÏÈ¿´Ò»Ð©×î¼òµ¥µÄÀý×Ó
Àý×Ó
Table A
aid   adate
1      a1
2      a2
3      a3
TableB
bid bdate
1    b1
2   b2
4    b4
Á½¸ö±ía,bÏàÁ¬½Ó,Ҫȡ ......

MySQL Master/SlaveÊý¾Ý¿â¶Áд²Ù×÷Àà

Êý¾Ý¿â²Ù×÷ÀࣺDBCommon.class.php
//---------------------------------------------------------------------
// MySQL Master/SlaveÊý¾Ý¿â¶Áд²Ù×÷Àà
//
// ¿ª·¢×÷Õß: heiyeluren
// °æ±¾ÀúÊ·:
// 2006-09-20 »ù±¾µ¥Êý¾Ý¿â²Ù×÷¹¦ÄÜ, 25 ¸ö½Ó¿Ú
// 2007-07-30 Ö§³Öµ ......

MySQLÖ®¶¯Ì¬±íÌØÕ÷

Èç¹ûÒ»¸öMyISAM±í°üº¬Èκοɱ䳤¶ÈÁУ¨VARCHAR, BLOB»òTEXTDynamic£©£¬»òÕßÈç¹ûÒ»¸ö±í±»ÓÃROW_FORMAT=DYNAMICÑ¡ÏîÀ´´´½¨£¬¶¯Ì¬´æ´¢¸ñʽ±»Ê¹Óá£
 
Õâ¸ö¸ñʽ¸üΪ¸´ÔÓÒ»µã£¬ÒòΪÿÐÐÓÐÒ»¸ö±íÃ÷ÐÐÓж೤µÄÍ·¡£µ±Ò»¸ö¼Ç¼ÒòΪ¸üеĽá¹û±»±äµÃ¸ü³¤£¬¸Ã¼Ç¼Ҳ¿ÉÒÔÔÚ³¬¹ýÒ»¸öλÖô¦½áÊø¡£
 
Äã¿ÉÒÔʹÓÃOPTIMIZE TAB ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ