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

mysql ÕÒ»ØÃÜÂë

 
1.  Í£µ½ÔËÐеÄmysql:    /etc/init.d/mysql stop
2.  ʹÓÃskip-grant-tablesÕâ¸öÑ¡ÏîÆô¶¯MySQL£º  /usr/bin/mysqld_safe --skip-grant-tables &
3.  ÏÖÔÚ¿ÉÒÔ²»ÓÃÃÜÂë½øÈëmysql ÁË¡£
     #  myql
    >   use mysql;
    >   UPDATE user SET password=password('123456') WHERE user='root'; //ÃÜÂëÐÞ¸ÄΪ123456;
    >  FLUSH PRIVILEGES;
    > quit;//Í˳ömysql
4. ÖØÆômysql :  /etc/init.d/mysql restart
ÏÖÔھͿÉÒÔÓÃmysql -uroot -p123456µÇ½ÁË¡£
ת×Ôhttp://blog.csdn.net/ytz_linuxer/archive/2009/07/03/4320660.aspx


Ïà¹ØÎĵµ£º

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 ......

ubuntu °²mysql install dbʱ³öÁËÎÊÌâ

ÕâÁ½ÌìÎÒ×°ÁËUBUNTU £¬ÔÚ±àÒë°²×°MYSQLµÄʱºòûÓгöʲôÎÊÌ⣬
µ½scripts/mysql_install_db --user=mysql
ÕâÒ»²½Ê±£¬µÃµ½ÈçÏ´íÎó
FATAL ERROR: Can't find mysqld. Please specify your installation
directory with the '--basedir=' option.
FATAL ERROR: Could not find SQL file '/fill_help_tables.sql'
µ½ÍøÉ ......

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
 &nbs ......

ubuntuÖÐmysqlÂÒÂëÎÊÌâ

 ÏÈ¿´ÏÂÃæ×¢ÒâÄÚÈÝ
ÕûÕûŪÁËÒ»Ì죬ÖÕÓÚ½â¾öÁËjdbc(mysql-connector-java-5.0.30)ºÍmysqͨÐÅÖÐÎÄÂÒÂëµÄÎÊÌ⣡ÎÒµÄϵͳÊÇ
linux£¨ubuntu£©¡£ÔÚjavaÖУ¨Myeclipse»·¾³£©Ê¹ÓÃhibernateÁ¬½Ómysql¡£´æ´¢Ó¢ÎÄûÎÊÌ⣬д£¨insert
into£©ºÍ¶Á£¨select£©¶¼ÄÜÕýÈ·ÏÔʾ£¬µ«ÊÇÈôÆäÖдøÓÐÖÐÎÄ×Ö·û¾Í³ÉÂÒÂëÁË¡£µ½ÍøÉϲéÕÒÁ˰ëÌì×ÊÁ ......

MySQLµÄtimestampÀàÐÍ×Ô¶¯¸üÐÂÎÊÌâ

 ×¢£º±¾ÎÄÌÖÂ۵ķ¶Î§ÎªÎ´ÆôÓÃMAXDBģʽµÄ±í£¡
    ½ñÌ콨ÁËÒ»¸ö±í£¬ÀïÃæÓÐÒ»¸öÁÐÊÇtimestampÀàÐÍ£¬ÎÒ±¾ÒâÊÇÔÚÊý¾Ý¸üÐÂʱ£¬Õâ¸ö×ֶεÄʱ¼äÄÜ×Ô¶¯¸üС£ÆñÖª¶ÔÕâ¸öÀàÐ͵ÄÖµ»¹²»ÉõÁ˽⣬µ¼Ö³ö´í¡£·¢ÏÖÕâ¸ö×Ö¶ÎÖ»ÊÇÔÚÕâÐÐÊý¾Ý½¨Á¢µÄʱºòÓÐÖµ£¬ÔÚ¸üеÄÈ´Îޱ仯¡£
    ²éÕÒ×ÊÁÏ£¬·¢ÏÖÊÇÎÒ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ