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

ÓÃÃüÁîÐÐÖ´ÐÐSQL½Å±¾Óï·¨½âÎö

osql   ʵÓù¤¾ß  
  osql   ʵÓù¤¾ßʹÄúµÃÒÔÊäÈë   Transact-SQL   Óï¾ä¡¢ÏµÍ³¹ý³ÌºÍ½Å±¾Îļþ¡£¸ÃʵÓù¤¾ßͨ¹ý   ODBC   Óë·þÎñÆ÷ͨѶ¡£  
   
  Óï·¨  
  osql  
          [-?]   |  
          [-L]   |  
          [  
                  {  
                          {-U   login_id   [-P   password]}  
                          |   -E  
                  }  
                  [-S   server_name[\instance_name]]   [-H   wksta_name]   [-d   db_name]  
                  [-l   time_out]   [-t   time_out]   [-h   headers]  
                  [-s   col_separator]   [-w   column_width]   [-a   packet_size]  
                  [-e]   [-I]   [-D   data_source_name]  
                  [-c   cmd_end]   [-q   "query"]   [-Q   "query"]  
                  [-n]   [-m   error_level]   [-r   {0   |   1}]  
                  [-i   input_file]   [-o   output_file]   [-p]  
                  [-b]   [-u]   [-R]   [-O]  
          ] &nbs


Ïà¹ØÎĵµ£º

sql²»³£¼ûÓï¾ä»ã×Ü

1¡¢join
A±íµÄÖ÷¼üÊÇ×÷ΪB±íµÄÍâ¼ü¡£ÔÚ²éѯµÄʱºò£¬¿ÉÒÔͨ¹ý²»Í¬µÄjoin½«AºÍB±íÁ´½ÓÆðÀ´£¬´Ó¶øµÃµ½²»Í¬µÄ²éѯ½á¹û¡£
* JOIN: Èç¹û±íÖÐÓÐÖÁÉÙÒ»¸öÆ¥Å䣬Ôò·µ»ØÐÐ
* INNER JOIN: Èç¹ûÁ½¸ö±íÖÐÓÐÆ¥ÅäµÄ£¬Ôò·µ»ØÐР         
* LEFT JOIN: ¼´Ê¹ÓÒ±íÖÐûÓÐÆ¥Å䣬Ҳ´Ó×ó± ......

SQL SERVER2005°æ±¾±È½Ï

ÔÚwindows XP SP3 ÖÐÊÇ¿ÉÒÔ°²×° SQL Server 2005 µÄ²»»áÓмæÈÝÎÊÌâ ÎÒÔÚ°²×°µÄʱºò¾ÍʲôÎÊÌⶼû¿´µ½ °²×°ºÃºó¸½¼ÓÒ»¸öÊý¾Ý¿â ÓÃBorland JBuilder 2006 Enterprise ºÍeclipse ҲûÎÊÌâ
SQL2005 ·ÖÎå¸ö°æ±¾£¬ÈçÏÂËùÁУ¬
¡¡¡¡1.Enterprise(ÆóÒµ°æ),
  2.Development(¿ª·¢°æ),
¡¡¡¡3.Workgroup,(¹¤×÷Ⱥ°æ)
¡¡¡¡4.St ......

sql´óÊý¾Ý²Ù×÷ÈçºÎÓÅ»¯

¾ßÌåҪעÒâµÄ£º  
1.Ó¦¾¡Á¿±ÜÃâÔÚ where ×Ó¾äÖжÔ×ֶνøÐÐ null ÖµÅжϣ¬·ñÔò½«µ¼ÖÂÒýÇæ·ÅÆúʹÓÃË÷Òý¶ø½øÐÐÈ«±íɨÃ裬È磺  
select id from t where num is null  
¿ÉÒÔÔÚnumÉÏÉèÖÃĬÈÏÖµ0£¬È·±£±íÖÐnumÁÐûÓÐnullÖµ£¬È»ºóÕâÑù²éѯ£º  
select id from t where num=0 &n ......

²âÊÔMSSQLÖÐSQLÓï¾äÖ´Ðл¨·ÑµÄʱ¼ä

selectÓï¾äǰ¼Ó£º
declare @d datetime
set @d=getdate()
²¢ÔÚselectÓï¾äºó¼Ó£º
select [Óï¾äÖ´Ðл¨·Ñʱ¼ä(ºÁÃë)]=datediff(ms,@d,getdate())
ת×Ô£º¶¯Ì¬ÍøÖÆ×÷Ö¸ÄÏ www.knowsky.com
ÕâÊǼòÒ׵IJ鿴ִÐÐʱ¼äµÄ·½·¨¡£
===========================================£¨Ò»ÏÂÄÚÈÝת×Ô£º£Ã£Ó£Ä£Î£©
MSSQL ServerÖÐͨ¹ý²é ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ