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

PL/SQL developerÔ¶³Ì·ÃÎÊÊý¾Ý¿âÅäÖ÷½·¨

ʹÓÃPL/SQL developerÔ¶³Ì·ÃÎÊoracleÊý¾Ý¿âʱ£¬Ê×ÏÈҪȷ¶¨±¾»úÖÐ×°ÓÐoracle¿Í»§¶Ë¡£Ä¿Ç°»¹²»ÖªµÀÄÄÀïµ¥¶ÀµÄoracle¿Í»§¶Ë°²×°°ü¡££¨ÒòΪÎÒÓõÄÊÇoracle10g£¬oracle10g°²×°µÄ¹ý³ÌÖÐûÓÐÌØ¶¨µÄ¿Í»§¶ËÑ¡ÏËùÒÔÎÒÒ»°ã¶¼ÊÇÔÚ±¾»úÓð²×°oracleËùÓй¦ÄÜ£©
ÔÚ±¾»ú°²×°ºÃoracle¿Í»§¶Ëºó£¬ÎÒÃÇÔÚ±¾»ú(¼´¿Í»§¶Ë)µÄoracleµÄ°²×°Ä¿Â¼ÏÂE:\oracle\product\10.1.0\db_1\NETWORK\ADMINÕÒµ½tnsnames.oraÎļþ£¨ÖÁÓÚoracle¿Í»§¶Ëµ¥¶À°²×°°ü·½Ê½Ï£¬´ËÎļþµÄλÖÃĿǰ²»Çå³þ£©£¬Õâ¸öÎļþ¾ÍÊÇoracle¿Í»§¶Ë·ÃÎÊ·þÎñÆ÷¶ËµÄÅäÖÃÎļþ¡£´ò¿ª´ËÎļþ£¬ÄÚÈÝÈçÏ£¨/* */ÖеÄÄÚÈÝΪעÊÍ£©£º
# tnsnames.ora Network Configuration File: E:\oracle\product\10.1.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = www-29aa47b8d28)(PORT = 1521)) 
    /* ÉÏÐÐÖÐHOSTºóÃæµÄ²ÎÊýÊÇÖ¸·þÎñÆ÷µÄipµØÖ·£¬´Ë´¦µÄ“www-29aa47b8d28”ÊÇÖ¸µÄ±¾»úµÄµØÖ·¡£µ±ÎÒÃÇ·ÃÎÊÔ¶³Ì·þÎñÆ÷ʱ£¬¿ÉÒÔÖ±½Óд·þÎñÆ÷µÄipµØÖ·£¬ÀýÈç192.168.0.105Ö®ÀàµÄ¡£PORTºóÃæµÄ²ÎÊýÊÇÖ¸Ô¶³Ì·þÎñÆ÷oracle·ÃÎʵĶ˿ںŠ*/
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )


Ïà¹ØÎĵµ£º

SQLÈ¥³ýijһ×Ö¶ÎÖµÖØ¸´¼Ç¼µÄ·½·¨

Ô­Àí£º¶ÔÐèÒªÈ¥ÖØ¸´¼Ç¼µÄ×ֶΰ´×éÅÅÐò£¬È»ºóÈ¡ÆäÖÐÒ»Ìõ¼Ç¼¡£ÔÚ×ܲéѯÓï¾äÖÐʹÓÃinÓï·¨¹ýÂË
È¥µôÖØ¸´¼Ç¼
select * from company where comid in (select Max(comid) from company group by companyname)
µÃµ½Öظ´¼Ç¼Êý
select * from company where comid not in (select Max(comid) from company group by companyn ......

SQL SERVERµÄROWCOUNT¹Ø¼ü×Ö

 
ÒòΪÑöÍûORACLE£¬ËùÒÔÒ»Ö±¶¼ÒÔΪSQL SERVERºÜ±¿¡£
¾Ý´«SQL 2005ÓÐÁËRowIDµÄ¶«Î÷£¬¿ÉÒÔ½â¾öTOPÅÅÐòµÄÎÊÌâ¡£¿Éϧ»¹Ã»Óлú»áÌåÑé¡£ÔÚSQL 2000ÖÐд´æ´¢¹ý³Ì£¬×Ü»áÓöµ½ÐèÒªTOPµÄµØ·½£¬¶øÒ»µ©Óöµ½TOP£¬ÒòΪû°ì·¨°ÑTOPºóÃæµÄÊý×Ö×÷Ϊ±äÁ¿Ð´µ½Ô¤±àÒëµÄÓï¾äÖÐÈ¥£¬ËùÒÔÖ»Äܹ»Ê¹Óù¹Ôì SQL£¬Ê¹ÓÃExecÀ´Ö´ÐС£²»ËµÐ§ÂʵÄÎÊÌ⣠......

SQL×¢Èë¹¥»÷·À·¶¼¼ÇÉ


SQL×¢Èë¹¥»÷·À·¶¼¼ÇÉ
Ò»°ãµÄSQL×¢Èë¹¥»÷¶¼ÊÇͨ¹ý¹¹½¨Ò»Ìõ¸´ÔÓµÄsqlÓï¾ä£¬
ͨ¹ýÍøÒ³Â©¶´À´Ö´ÐÐsqlÓï¾ä£¬´ïµ½¹¥»÷Êý¾Ý¿âµÄÄ¿µÄ¡£
Èçͨ¹ýÎÄÕÂIDÀ´²éѯijһƪÎÄÕµÄÍøÒ³£¬
ͨ³£²ÉÓõÄsqlÓï¾äΪ£º
sql="select top 1 * from articles where articId="&request("id")
ÄÇô¿ÉÒÔ¼òµ ......

sql server2005·µ»ØÖµÎÊÌâ

(1)¹ØÓÚ´æ´¢¹ý³Ì·µ»ØÖµÎÊÌ⣨output,ruturn£©
  output´æ´¢¹ý³Ì£º
  
alter proc usp_update
@count int output
as
set @count=(select count(*) from stu)
   
 return´æ´¢¹ý³Ì£º
alter proc usp_update
as
declare @count int
set @count=(select count(*) from stu)
r ......

SQLº¯ÊýÖ®ËÄÉáÎåÈë

SQLº¯ÊýÖ®ËÄÉáÎåÈ루ת×Ôhttp://ln1058.javaeye.com/blog/191502£©
ÎÊÌâ1£º
SELECT CAST('123.456' as decimal) ½«»áµÃµ½ 123£¨Ð¡ÊýµãºóÃæµÄ½«»á±»Ê¡ÂÔµô£©¡£
Èç¹ûÏ£ÍûµÃµ½Ð¡ÊýµãºóÃæµÄÁ½Î»¡£
ÔòÐèÒª°ÑÉÏÃæµÄ¸ÄΪ
SELECT CAST('123.456' as decimal(38, 2)) ===>123.46
×Ô¶¯ËÄÉáÎåÈëÁË£ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ