Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB
ÈÈÃűêÇ©£º c c# c++ asp asp.net linux php jsp java vb Python Ruby mysql sql access Sqlite sqlserver delphi javascript Oracle ajax wap mssql html css flash flex dreamweaver xml
 ×îÐÂÎÄÕ : sql

Çó½âÒ»½Ï¸ßÄѶÈSQLÓï¾ä

a  b
1  1
3  4
5  9
6  15

aÁÐ ÊÇÊý¾Ý¿âÊý¾Ý
Ïë²éѯ³öbÁУ¬bÊÇaµÄÿ¸ö¼Ç¼µÄÀÛ¼ÆÁÐ

SQL code:
select a,b=(select sum(a) from tb where a<=t.a)
from tb as t

ÒýÓÃ
SQL codeselect a,b=(selectsum(a)from tbwhere a <=t.a)from tbas t

Âäºó¿© ......

ÇóÒ»SQLÓï¾ä

a  b
1  1
3  4
5  9
6  15

aÁÐ ÊÇÊý¾Ý¿âÊý¾Ý
Ïë²éѯ³öbÁУ¬bÊÇaµÄÿ¸ö¼Ç¼µÄÀÛ¼ÆÁÐ

¸ßÊÖ ÕâÑùaÁеÄ˳Ðò±äÁË£¬ÀýÈçÎÒaÁÐÀïÃæÓÐ1£¬10£¬11£¬2£¬13......13»áÅܵ½Ç°ÃæÁË¡£

ÒýÓÃ
¸ßÊÖ ÕâÑùaÁеÄ˳Ðò±äÁË£¬ÀýÈçÎÒaÁÐÀïÃæÓÐ1£¬10£¬11£¬2£¬13......13»áÅܵ½Ç°ÃæÁ ......

Çë½ÌÒ»¸öSQLÓï¾ä - MS-SQL Server / ÒÉÄÑÎÊÌâ

2ÕÅ±í£¬Ò»ÕÅÊÇÈËÔ±±í£¬µ«ÊÇ»áÓа汾µÄ¸ÅÄî(versionnum)£¬ÎÒÖ»ÏëÒª×î´óµÄÄDZʣ¬ÇëÎÊÈçºÎд£¬Ð»Ð»
[REFNumber_AdminUser]
  UserPrid Process
1 Oliver xx NULL
2 Harry xx NULL
3 Zero xx NULL
[MDM_UserProfile]
UserPRID VersionNum  
Oliver 1
Joan 1
Harry 2
ÎÒÓõÄÓï¾ä
select UserP ......

ÇóSQL join

http://forum.csdn.net/PointForum/Forum/PostTopic.aspx?forumID=6e0e6207-de3a-4c0b-8f8a-052fcba6392a

Óû§±í1
CUST_ID  VC(20)      NAME      VC£¨20£©  CUST_IDºÍ ʹÓÃÕß±í  USER_ID ¹ØÁª
user1                ......

sqlÁ¬½Ó×Ö´®ÎÊÌâ

C#дµÄÒ»¸öSQLÊý¾Ý¿â³ÌÐòÀ´Á¬½Ó±¾»úµÄÊý¾Ý¿â£¬ÆäÖÐÁ¬½ÓÊý¾Ý¿â×Ö´®µÄserverÊDz»ÊÇҪд³É±¾»úµÄIPÄØ£¿ÄÇÈç¹ûÎÒÒªÒÆÖ²Õâ¸ö³ÌÐòµ½±ðµÄ»úÆ÷ÊDz»ÊÇ»¹ÒªÊÖ¹¤Ð޸ĴúÂ룬°ÑIP¸Ä³ÉÄ¿±ê»úÆ÷µÄIPÄØ£¿Çë´ïÈËÖ¸µã£¬ÕâÀà³ÌÐòÔõÃ´ÒÆÖ²
±¾µØ£ºlocalhost »ò .
¸Ä³É±¾»úIP£¬ºÃÏñÐèÒªÅäÖÃÒ»ÏÂ

ÒÆÖ²Õâ¸ö³ÌÐòµ½±ðµÄ»úÆ÷ ÐèÒªÊÖ¹¤ÐÞ¸Ä
......

ÔõÑùÔÚ³ÌÐòÖеõ½hibernateÉú³ÉµÄsqlÓï¾ä

ÔõÑùÔÚ³ÌÐòÖеõ½hibernateÉú³ÉµÄsqlÓï¾ä£¿
²»ÊÇ¿ØÖÆÌ¨Êä³öµÄ£¬»òÕßlog4jµÈÎı¾ÖжÁ³öÀ´µÄ¡£ÒªÔÚ³ÌÐòÖлñÈ¡¡£Ò²¾ÍÊǵ±hibernateÖ´ÐÐÁËÕâ¸ösql¾ÍÄܵõ½
Èç¹ûÓÐÊÂÎñÔòÔÚÊÂÎñÌύʱµÄµÃµ½¡£
ÏÖÔÚÐèҪʵÏÖÀàËÆÓÚ¶Ôhibernate½øÐÐ¼à¿Ø¡£ÒÔʵÏÖ¶ÔϵͳʹÓÃÈÕÖ¾½øÐÐ¼à¿ØÔݲ»¼à¿Ø²éѯµÄÊý¾Ý
Ö»¼à¿ØÐ޸ĵÄɾ³ýµÄºÍÐÂÔö¼ÓµÄ ......
×ܼǼÊý:3315; ×ÜÒ³Êý:553; ÿҳ6 Ìõ; Ê×Ò³ ÉÏÒ»Ò³ [224] [225] [226] [227] 228 [229] [230] [231] [232] [233]  ÏÂÒ»Ò³ βҳ
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ