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

mysql×Ó²éѯ exists,not exists


(1)ʵÏÖÈýá¹û¼¯A-½á¹û¼¯B£º--ÀûÓÃnot
exists£¬ºÏ²¢Ôò¿ÉÓÃunion
exists,not
exists£ºÓÃÓÚÅжÏÇÒ»ñÈ¡½á¹û¼¯AÊÇ·ñ´æÔڵؽá¹û¼¯BÖÐ!
==========½á¹û¼¯A£º
SELECT
d.Device_ID,d.Device_Name,a.App_ID,a.App_Name
               from
T_Device_BaseInfo d ,T_App_Spce_R_Info da ,T_App_Info a
              
WHERE d.Spec_Code=da.Spec_Code AND da.App_ID=a.App_ID and 
d.Device_ID=01;
+-----------+-------------+--------+----------------+
|
Device_ID | Device_Name | App_ID | App_Name       |
+-----------+-------------+--------+----------------+
|
01        | coship01    | 01     | maliao         |
| 01        |
coship01    | 02     | maliao         |
| 01        | coship01    |
03     | red alert      |
| 01        | coship01    | 05     |
COD            |
| 01        | coship01    | 08     | flashplayer    |
|
01        | coship01    | 09     | flashplayer6.0 |
+-----------+-------------+--------+----------------+  
6 rows in set (0.00 sec)
==========½á¹û¼¯B£º
mysql> select * from T_Device_App_R_Info
where Device_ID=01;
+----+-----------+--------+------+------------+
|
ID | Device_ID | App_ID | Opr  | Setup_Date |
+----+-----------+--------+------+------------+
|
64


Ïà¹ØÎĵµ£º

PHP³ÌÐòºÍMySqlÊý¾ÝÂÒÂëÎÊÌâÔ­Òò¼°½â¾ö

PHP³ÌÐòºÍMySqlÊý¾ÝÂÒÂëÎÊÌâÔ­Òò¼°½â¾ö
ÂÒÂëÎÊÌâ¼òµ¥Ëµ¾ÍÊÇÊý¾Ý¿âдÈë¶ÁÈ¡£¬ÍøÒ³Îļþ£¬ÍøÒ³ÏÔʾʱ¼¸¸ö»·½ÚµÄ±àÂë²»Ò»ÖÂÔì³ÉµÄ¡£
ÂÒÂëÎÊÌâ
дÈëʱ£ºÒ³ÃæÌáȡдÈëÊý¾Ý±àÂëºÍдÈëÊý¾Ý¿âʱ±àÂë²»Ò»ÖÂ
¶Áȡʱ£º¶ÁÈ¡ºóËùÓñàÂëÓëÊý¾Ý¿âдÈëʱ²»Ò»ÖÂ
ÏÔʾʱ£º±àÂëÓëÊý¾Ý¿â¶ÁÈ¡ºóµÄÊý¾Ý²»Ò»ÖÂ
ºÜÏÔȻֻÓÐÈýÕß¶¼Í³Ò»²ÅÐУ ......

mysql gui tools ʹÓÃ

¸Õ¿ªÊ¼²Ù×÷Êý¾Ý¿âʱÎÒÒ»°ãÊDz»Ê¹ÓÃʲôgui¹¤¾ßµÄ£¬ÎÒÊÇÖ±½ÓʹÓÃcmdϲÙ×÷µÄ£¬¸Ð¾õÓÃÆðÀ´Ò²Í¦²»´íµÄ¡£
×î½ü¿´µ½ÓÐgui¹¤¾ßÄÇÒ²²»´í°¡£¬¾ÍÏÂÀ´Ê¹ÓÃһϣ¬ÎÒϲ»¶ÏµÄÊÇѹËõ°üÃâ°²×°µÄ£¬ÕâÑù¸Ð¾õ±È½ÏÊæ·þ°¡
´ò¿ª²éѯ¹¤¾ßÊǾ¹È»³ö´íÁË£¬²»¹ýÄÜÕý³£Ê¹Óõ쬵±Ê±Ò²Ã»ÓÐ×¢Ò⣬½ñÌìÌØÒâµÄ¿´ÁËÒ»ÏÂ
Ó¦¸ÃÊÇmysqlqb_functions.xml¼ÓÔØ ......

ÍüÁËOracleµÄsysÓû§ºÍMySQLµÄrootÓû§ÃÜÂ룬½â¾ö·½·¨

ÍüÁËOracleµÄsysÓû§ºÍMySQLµÄrootÓû§ÃÜÂ룬½â¾ö·½·¨
2007Äê03ÔÂ16ÈÕ ÐÇÆÚÎå 09:44
×÷Õߣºhexiong¡¡
°æÈ¨ÉùÃ÷£º¿ÉÒÔÈÎÒâ×ªÔØ£¬×ªÔØÊ±ÇëÎñ±ØÒÔ³¬Á´½ÓÐÎʽ±êÃ÷ÎÄÕÂԭʼ³ö´¦ºÍ×÷ÕßÐÅÏ¢¼°±¾ÉùÃ÷¡£
http://hi.baidu.com/hexiong/blog/item/b4acd72a85272d2cd42af1b1.html
¾­³£Åöµ½ÓÐÈËÔÚÂÛ̳ÉÏÎÊÕâ¸öÎÊÌ⣬¸É´àÔÚÕâÀï×ܽáÒ ......

×Ô¼ºÈçºÎÕýÈ·»ñÈ¡MYSQLµÄADOÁ¬½Ó×Ö·û´®

ÔÚ×ÀÃæÉÏн¨Ò»¸ö¿ÕµÄÎı¾Îļþmysql.txt,ÖØÃüÃûΪmysql.udl,Ë«»÷Õâ¸ömysql.udlÎļþ£¬´ò¿ª“Êý¾Ý¿âÁ¬½ÓÊôÐÔ”¶Ô»°¿ò£¬ÔÚ“Ìṩ³ÌÐò”ҳѡÔñ”Micrsoft Ole DB Provider for ODBC Drivers“£¬ µã»÷ÏÂÒ»²½£¬ÔÚ“Á¬½Ó”Ò³µÄ,"Ö¸¶¨Êý¾ÝÔ´"Ñ¡Ôñ"ʹÓÃÁ¬½Ó×Ö·û´®",µã» ......

MySQLÖ÷´Ó·þÎñÆ÷£¨Replication£©µÄÉèÖÃ

Ê×ÏÈÉèÖÃMySQLÖ÷·þÎñÆ÷£º
ÔÚÖ÷·þÎñÆ÷ÉÏΪ´Ó·þÎñÆ÷½¨Á¢Ò»¸öÓû§£º
grant replication slave on *.* to 'Óû§Ãû'@'Ö÷»ú' identified by 'ÃÜÂë';
Èç¹ûʹÓõÄÊÇMySQL 4.0.2֮ǰµÄ°æ±¾£¬ÔòÓÃfileȨÏÞÀ´´úÌæreplication slave
±à¼­Ö÷·þÎñÆ÷µÄÅäÖÃÎļþ£º/etc/my.cnf
server-id=1
log-bin
binlog-do-db=ÐèÒª¸´ÖƵÄÊý¾Ý¿âÃû£ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ