Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

SQLµ±Ç°ÈÕÆÚ»ñÈ¡¼¼ÇÉ

SQLµ±Ç°ÈÕÆÚ»ñÈ¡¼¼ÇÉ
select   getdate()   //2003-11-07   17:21:08.597    
  select   convert(varchar(10),   getdate(),120)   //2003-11-07  
  select   convert(char(8),getdate(),112)   //20031107  
  select   convert(char(8),getdate(),108)   //17:22:18 
select datepart(year,getdate()) //2007
µ±Ç°ÈÕÆÚ
select CONVERT(varchar(10), getdate(), 120)
Ò»¸öÔµÚÒ»ÌìµÄSQL ½Å±¾£º
     SELECT DATEADD(mm, DATEDIFF(mm,0,getdate()), 0)
±¾ÖܵÄÐÇÆÚÒ»
     SELECT DATEADD(wk, DATEDIFF(wk,0,getdate()), 0)
Ò»ÄêµÄµÚÒ»Ìì
     SELECT DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)
¼¾¶ÈµÄµÚÒ»Ìì
     SELECT DATEADD(qq, DATEDIFF(qq,0,getdate()), 0)
µ±ÌìµÄ°ëÒ¹
     SELECT DATEADD(dd, DATEDIFF(dd,0,getdate()), 0)
ÉϸöÔµÄ×îºóÒ»Ìì
      SELECT dateadd(ms,-3,DATEADD(mm, DATEDIFF(mm,0,getdate()), 0))
 
 
È¥ÄêµÄ×îºóÒ»Ìì
     SELECT dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate()), 0))
±¾ÔµÄ×îºóÒ»Ìì
     SELECT dateadd(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+1, 0))
±¾ÄêµÄ×îºóÒ»Ìì
     SELECT dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate())+1, 0))¡£
±¾ÔµĵÚÒ»¸öÐÇÆÚÒ»
     select DATEADD(wk, DATEDIFF(wk,0,                           
                dateadd(dd,6-datepart(day,getdate()),getdate())  
                               &nb


Ïà¹ØÎĵµ£º

sqlÊý¾ÝÀàÐÍÏê½â

sqlÊý¾ÝÀàÐÍÏê½â
(1)¶þ½øÖÆÊý¾ÝÀàÐÍ
¡¡¡¡¶þ½øÖÆÊý¾Ý°üÀ¨ Binary¡¢Varbinary ºÍ Image
¡¡¡¡Binary Êý¾ÝÀàÐͼȿÉÒÔÊǹ̶¨³¤¶ÈµÄ(Binary),Ò²¿ÉÒÔÊDZ䳤¶ÈµÄ¡£
¡¡¡¡Binary[(n)] ÊÇ n λ¹Ì¶¨µÄ¶þ½øÖÆÊý¾Ý¡£ÆäÖУ¬n µÄÈ¡Öµ·¶Î§ÊÇ´Ó 1 µ½ 8000¡£Æä´æ´¢ñ¿µÄ´óСÊÇ n + 4 ¸ö×Ö½Ú¡£
¡¡¡¡Varbinary[(n)] ÊÇ n λ±ä³¤¶ÈµÄ¶þ½øÖÆÊ ......

¾­µäSQLÓï¾ä´óÈ«

ÏÂÁÐÓï¾ä²¿·ÖÊÇMssqlÓï¾ä£¬²»¿ÉÒÔÔÚaccessÖÐʹÓá£
¡¡¡¡SQL·ÖÀࣺ
¡¡¡¡DDL—Êý¾Ý¶¨ÒåÓïÑÔ(CREATE£¬ALTER£¬DROP£¬DECLARE)
¡¡¡¡DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
¡¡¡¡DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK)
¡¡¡¡Ê×ÏÈ,¼òÒª½éÉÜ»ù´¡Óï¾ä£º
¡¡¡¡1¡¢ËµÃ÷£º´´½¨Êý¾Ý¿â
......

sql server ´æ´¢¹ý³ÌʵÏÖ·ÖÒ³

     ÔÚ¿ª·¢²»ÂÛÊÇWEB»¹ÊÇWinform³ÌÐòÖУ¬Êý¾Ý·ÖÒ³ÊǾ­³£Óöµ½µÄÎÊÌ⣬ҪÊÇÔÚ´úÂëÖÐʵÏִ˹ý³Ì£¬ÏÔÈ»½µµÍÁË·þÎñÆ÷µÄЧÂÊ£¬¿ÉÒÔʹÓÃÒÔÏ´洢¹ý³ÌÀ´ÊµÏÖ¡£
CREATE PROCEDURE pagination
@tblName varchar(255), -- ±íÃû
@strGetFields varchar(1000) = '*', -- ÐèÒª·µ»ØµÄÁÐ
@fldName varchar(255)= ......

SQL ServerÊý¾Ýµ¼Èëµ¼³ö¹¤¾ßBCPÏê½â

SQL code
SQL ServerÊý¾Ýµ¼Èëµ¼³ö¹¤¾ßBCPÏê½â
BCPÊÇSQL ServerÖиºÔðµ¼Èëµ¼³öÊý¾ÝµÄÒ»¸öÃüÁîÐй¤¾ß£¬ËüÊÇ»ùÓÚDB
-
LibraryµÄ£¬²¢ÇÒÄÜÒÔ²¢Ðеķ½Ê½¸ßЧµØµ¼Èëµ¼³ö´óÅúÁ¿µÄÊý¾Ý¡£BCP¿ÉÒÔ½«Êý¾Ý¿âµÄ±í»òÊÓͼֱ½Óµ¼³ö£¬Ò²ÄÜͨ¹ýSELECT fromÓï¾ä¶Ô±í»òÊÓͼ½øÐйýÂ˺󵼳ö¡£ÔÚµ¼Èëµ¼³öÊý¾Ýʱ£¬¿ÉÒÔʹÓÃĬÈÏÖµ»òÊÇʹÓÃÒ»¸ö¸ ......

SQLÎÞÏÞ·ÖÀà´æ´¢¹ý³ÌÕûÀí1

Óŵã:×ֶνÏÉÙ£¬ÓÐÔöɾ¸Ä²é¹¦ÄÜ£¬²»¹ý²éѯ̫Áýͳ¡£
ȱµã:
1.²»ËãÊÇÔÚºÜÕýµÄÎÞÏÞ·ÖÀà,ClassPathÕâ¸ö×ֶζ¨ÒåÏÞÖÆ¡£
2.Ö÷¼üCLASSID²»ÊÇ×ÔÔöµÄ£¬Ê¹ÓÃCODESMITHÅúÁ¿Éú³É¶à²ã¼Ü¹¹´úÂëÖлᵼÖ³ö´í¡£
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[ArticleClass]') and OBJECTPROPERTY(id, N'IsUse ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ