mysql 1366´íÎ󣬱£´æÖÐÎĵķ½·¨
³õѧmysqlÎÒÒ²Åöµ½ÖÐÎÄ´æ´¢µÄÎÊÌ⣬ÒÔÏÂÊÇÎҵĽâ¾ö·½°¸£º
1.Ê×ÏÈÔÚ×Ö¶ÎÑ¡Ïîcolumn option Öн«×Ö¶Î×Ö·û¼¯column charsetÉèΪgb2312¡£
2.»¹ÐèÒªÔÚ±íÑ¡Ïîtable option ÖÐͬÑù½«charsetÉèÖÃΪgb2312.
3.×îºóÈç¹û»¹²»ÐУ¬¾ÍÔÚmysql°²×°Ä¿Â¼ÏÂÕÒµ½my.ini,ÕÒµ½ÒÔÏÂλÖãº
[mysql]
default-character-set=gb2312
ͬÑù½«character-setÉèΪgb2312.
¾¹ýÒÔÉÏÉèÖþͿÉÒÔÔÚmysqlÖб£´æÖÐÎÄÁË¡£
Ïà¹ØÎĵµ£º
ÄÚ´æ±íʹÓùþϣɢÁÐË÷Òý°ÑÊý¾Ý±£´æÔÚÄÚ´æÖУ¬Òò´Ë¾ßÓм«¿ìµÄËÙ¶È£¬Êʺϻº´æÖÐСÐÍÊý¾Ý¿â£¬µ«ÊÇʹÓÃÉÏÊܵ½Ò»Ð©ÏÞÖÆ£¬ÒÔÏÂÊÇÀ¶²ÝʹÓõÄһЩ¸ÐÊÜ¡£
1¡¢heap¶ÔËùÓÐÓû§µÄÁ¬½ÓÊǿɼûµÄ£¬ÕâʹµÃËü·Ç³£ÊʺÏ×ö»º´æ¡£
2¡¢½öÊʺÏʹÓõij¡ºÏ¡£heap²»ÔÊÐíʹÓÃxxxTEXTºÍxxxBLOBÊý¾ÝÀàÐÍ£»Ö»ÔÊÐíʹÓÃ=ºÍ<=>²Ù×÷·ûÀ´ËÑË÷¼Ç¼£¨²» ......
MYSQLÓжàÖÖ´æ´¢ÒýÇæºÍ±íÀàÐÍ£¬InnoDBºÍBDBÖ§³ÖÊÂÎñ£¬Èç¹ûҪʹÓÃÊÂÎñ£¬±íµÄÀàÐ;ÍÓ¦¸ÃÊÇInnoDB.
Ìá¸ß±íµÄÐÔÄÜ£º
1¡¢ÓÃ×îСµÄÊý¾ÝÀàÐÍ¡£Õ¼ÓÿռäС£¬½ÚÊ¡´ÅÅ̿ռäºÍÄÚ´æ¡£
2¡¢±í¸ñµÄÖ÷Ë÷ÒýÒª¾¡¿ÉÄܵĶ̣¬ÒÔÃ÷ÏÔÌá¸ßЧÂÊ¡£
3¡¢Ë÷Òý×îºÃ½¨ÔÚΨһµÄÁÐÉÏ£¬Ë÷ÒýÔ½¶Ì£¬ËÙ¶ÈÔ½¿ì¡£
4¡¢¶àÁÐË÷Òý±ØÐë°üº¬×î×ó±ßµÄǰ׺²ÅÓÐЧ¡£ ......
1. mysql Ð޸ıíÃû×Ö
ALTER TABLE t1 RENAME t2;
2. ÐÞ¸ÄÁеÄÃû×Ö
>ALTER TABLE stock CHANGE COLUMN stock_id id INT(6);
3. Ôö¼ÓÁÐ
>ALTER TABLE ab ADD COLUMN id INT(3);
4. ¼õÉÙÁÐ
>ALTER TABLE ab DROP COLUMN id;
5. ÐÞ¸ÄÁ ......
Tomcat ÏÂ×îÈÝÒ×µ½µÄÎÊÌâ¾ÍÊÇÖÐÎÄÂÒÂëÎÊÌâÁË , ÏÂÃæ¾ÍÀ´Ì¸Ì¸ÎÒÔÚ Windows +Tomcat5 ϵ÷ÊÔ JSP ³ÌÐòʱ , ËùÅöµ½µÄÎÊÌâÒÔ¼°½â¾ö°ì·¨¡£
Õâ´Îµ÷ÊÔËùÓöµ½µÄÂÒÂëÎÊÌâÖ÷ÒªÓÐÈýÀࣺ
Ò»¡¢ Ò³Ãæ×Ö·ûÂÒÂë¡£
¼´Õû¸öÒ³Ãæ³öÏÖºº×ÖÂÒ ......
#ÐÂÔöÒ»¸ö×ֶΣ¬Ä¬ÈÏֵΪ0£¬·Ç¿Õ£¬×Ô¶¯Ôö³¤£¬Ö÷¼ü
alter table tabelname add new_field_name field_type default 0 not null auto_increment ,add primary key (new_field_name);
#Ôö¼ÓÒ»¸öÐÂ×Ö¶Î
alter table tableName ......