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

mysqlÖÐÌí¼ÓÍâ¼üÔ¼Êø

 ¾­³£Óõ½£¬µ«ÊÇ×ÜÊǼDz»×¡¡£
Óï·¨ÈçÏ£º
ALTER TABLE JOB ADD CONSTRAINT fk_prono
FOREIGN KEY(PRONO)
REFERENCES PROJECT(PRONO)
ON DELETE CASCADE
ON UPDATE NO ACTION;
ÎÒÔÚmysqlÖÐÌí¼ÓÁËÍâ¼üÔ¼Êø£¬ÊÔÁ˰ëÌìû³É¹¦£¬ºóÀ´°ÑÍâ¼üµÄÃû×ÖÓÉFK¸Ä³ÉFK_1¾ÍºÃÁË£¬¿ÉÄÜmysqlÖÐFKÊǸö±£Áô×Ö£¬×¢Ò⣡


Ïà¹ØÎĵµ£º

MYSQLÊý¾Ý¿âʵÓÃѧϰ×ÊÁÏÖ®³£ÓÃÃüÁºÏ

 MysqlÊý¾Ý¿âÊÇÒ»¸ö¶àÓû§£¬¶àÏ̵߳ĹØÏµÐÍÊý¾Ý¿â£¬ÊÇÒ»¸ö¿Í»§»ú/·þÎñÆ÷½á¹¹µÄÓ¦ÓóÌÐò¡£ËüÊǶԸöÈËÓû§ºÍÉÌÒµÓû§ÊÇÃâ·ÑµÄ.
MysqlÊý¾Ý¿â¾ßÓÐÒÔÏÂÓŵ㣺
1.ͬʱ·ÃÎÊÊý¾Ý¿âµÄÓû§µÄÊýÁ¿²»ÊÜÏÞÖÆ
2.¿ÉÒÔ±£´æ³¬¹ý5ǧÍòÌõµÄ¼Ç¼
3.ÊÇĿǰÊг¡ÉÏÏÖÓÐÊý¾Ý¿â²úÆ·ÖÐÔËÐÐËÙ¶È×î¿ìµÄÊý¾Ý¿âϵͳ
4.Óû§È¨ÏÞÉèÖüòµ¥¡¢ÓÐ ......

MySql»ù´¡ÖªÊ¶(¾­µä°æ)

 
Ò»¡¢mysql µÄ¹ÜÀí
1
¡¢Á¬½Ó
Mysql
¸ñʽ£º mysql -hÖ÷»úµØÖ· -uÓû§Ãû £­pÓû§ÃÜÂë
Àý1£ºÁ¬½Óµ½±¾»úÉϵÄMYSQL¡£
Ê×ÏÈÔÚ´ò¿ªDOS´°¿Ú£¬È»ºó½øÈëĿ¼ mysqlbin£¬ÔÙ¼üÈëÃüÁîmysql -uroot -p£¬»Ø³µºóÌáʾÄãÊäÃÜÂ룬Èç¹û¸Õ°²×°ºÃMYSQL£¬³¬¼¶Óû§rootÊÇûÓÐÃÜÂëµÄ£¬¹ÊÖ±½Ó»Ø³µ¼´¿É½øÈëµ½MYSQLÖÐÁË£¬MYSQLµÄÌáʾ·ûÊÇ£º ......

mysql alter Óï¾äÓ÷¨,Ìí¼Ó¡¢Ð޸ġ¢É¾³ý×Ö¶Î

//Ö÷¼ü
alter table tabelname add new_field_id int(5) unsigned default 0 not null auto_increment ,add primary key (new_field_id);
//Ôö¼ÓÒ»¸öÐÂÁÐ
alter table t2 add d timestamp;
alter table infos add ex tinyint not null default '0';
//ɾ³ýÁÐ
alter table t2 drop column c;
//ÖØÃüÃûÁÐ
......

solarisÏÂmysqlÊý¾Ý¿â×Ö·û¼¯

solarisÏÂmysql°²×°Íê±ÏºóÖ´ÐÐÈçϲÙ×÷£¬¿ÉÒÔÐÞ¸ÄÊý¾Ý¿â×Ö·û¼¯£¬ÉèÖÃMySQLÔÚSolarisÉϱíÃû²»Çø·Ö´óСд
1.¿½±´ÎļþÈçÏ£º
cp /usr/sfw/share/mysql/my-medium.cnf /etc/my.cnf
°ÑÎļþÖ»¶ÁÊôÐÔÈ¥µô
chmod +w my.cnf
 
2 ÉèÖÃmysqlµÄ×Ö·û¼¯£ºÔÚ/etc/my.cnfÖеÄmysqld¶ÎºÍclient¶Î¼ÓÈë´úÂ룺
 
[client]
de ......

phpµÄ½Å±¾ÀïÖ±½Ó½¨Á¢mysqlÀïµÄÊý¾Ý¿â

 ÎÊ£º
±ÈÈçÎÒÏëÖ±½ÓÔÚphp µÄ½Å±¾Àïдһ¸öÀàËÆ£¬install.phpµÄ½Å±¾
Õâ¸ö½Å±¾µÄ×÷ÓþÍÊÇ£¬Á¬½ÓmysqlÊý¾Ý¿â£¬²¢½¨Á¢ÎÒËùÏëÒª½¨Á¢µÄÊý¾Ý¿â£¬Êý¾Ý±í£¬ÒÔ¼°Ïà¹Ø×ֶΡ£
Çë¾ßÌåдһ¸öÀý×Ó£¬Ð»Ð»£¡
______________________________________________________________________________________________
´ð1£º
連½Ó·½· ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ