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

Oracle²éѯһ¶¨Ê±¼ä¶ÎÄÚÿһ¶Îʱ¼äÊý¾ÝÎÊÌâ

ÎÒÓÐÒ»ÕŶ©µ¥±í ±í½á¹¹ÈçÏÂ
¶©µ¥ºÅ£¨ID£©  ÉÌÆ·Àà±ð  ϵ¥Ê±¼ä  ¶©µ¥½ð¶î 
00000001      a          2009-09-20    50
00000002      b          2009-09-20    33
00000003      a          2009-09-20    90
........      ..        ..........    ..
........      ..        ..........    ..
00000016      a          2009-09-23    120

ÇëÎʸ÷λÈçºÎ¿ÉÒԵõ½Ã¿Ò»ÌìaÀàÉÌÆ·µÄÏúÊÛ½ð¶î×ܺÍ
лл


×¢ÒâÐèÒª°ÑÿÌìËùÓеĶ©µ¥½ð¶îÏà¼ÓµÃµ½×ܺÍ
±ÈÈçÈç¹û2009-09-20ÓÐ3±ÊaÉÌÆ·¶©µ¥ ¼Û¸ñ·Ö±ðΪ 30 30 90
µÃµ½µÄ½á¹ûÓ¦¸ÃΪ150
Ï£Íû¸÷λ¸ßÊÖ°ï°ïæ


¸Õ¸ÕÄÇλÅóÓѰïæ²¢Ã»Óнâ¾öµ¥Á¿ºÍ½ð¶î°´Ã¿Ììͳ¼ÆµÄÎÊÌâ ²¢²»Äܹ»ÏÔʾȫÌìËùÓÐÊý¾ÝµÄºÍ

select ϵ¥Ê±¼ä, sum£¨¶©µ¥½ð¶î£© from ¶©µ¥±í where ÉÌÆ·Àà±ð=a and ϵ¥Ê±¼ä=to_date('2009/09/20','yyyy/mm/dd') group by ϵ¥Ê±¼ä

select sum(money) from test
where type=a
group by time

Â¥Ö÷°Ñ×îÖÕÏëÒªµÄ½á¹ûÃèÊöµÄ¸üÇå³þһЩ£¬ÊÇֻҪÿÌìijÀàÉÌÆ·µÄ½ð¶î×ܺÍÂð£¿

ʱ¼äÊÇdateÀàÐ͵ÄÂð£¿
select ÉÌÆ·Àà±ð,trunc(ϵ¥Ê±¼ä,'dd'),sum(¶©µ¥½ð¶î)
from table1
group by ÉÌÆ·Àà±ð,trunc


Ïà¹ØÎÊ´ð£º

adoÁ¬½ÓoracleµÄ¹ÖÎÊÌâ

ÒÔǰ³ÌÐòºÃºÃµÄ,ÄܽøÐÐÈκβÙ×÷
µ«´Ó×òÌ쿪ʼͻȻÁ¬½ÓÊý¾Ý¿âʧ°Ü,´úÂëÈçÏÂ:
try
{
        ::CoInitialize(NULL);
        hr=m_pConnection.Creat ......

ÊÇoracleµÄbugô£¿É¢·ÖÁË£¡ - Oracle / »ù´¡ºÍ¹ÜÀí

±¾À´ÒªÐ´¸öupdateÓï¾ä
update table_a A
  set A.flag=1
  where A.id in (select B.id from table_b B)
½á¹ûÎóд³É
update table_a A
  set A.flag=1
  where ......

OracleÊý¾Ý¿âÔ½À´Ô½Âý¸ÃÈçºÎ´¦Àí£¿

Êý¾Ý¿â£ºOracle10g(10.2)
Ó¦ÓãºÒ»¸öC#µÄ³ÌÐòдÊý¾Ý¿â£¬Ò»¸öJSP³ÌÐò¶ÁÊý¾Ý¿â
¸ºÔØ£ºÄ¿Ç°´¦ÓÚ¿ª·¢½×¶Î£¬»ù±¾ÉÏÖ»ÓÐ3-4¸öÓû§·ÃÎÊJSPÍøÕ¾¡£
ÏÖÏó£ºÖØÐÂÆô¶¯ºóµÄÊý¾Ý¿â²éѯ·Ç³£¿ì£¬µ«ÊÇÓÃ×ÅÓÃ×ÅÔ½À´Ô½Âý£¬ËùÓÐJSPÍøÒ ......

ÀÏÎÊÌ⣺OracleÐÐתÁУ¨×Ö·û´®²ð·Ö£©

ÏÖÓÐÒÔÏÂÊý¾Ý£º
ID Name
1 Jack,Tom,Ben
2 Mary,Simth,Tony,Jay
ת»»Îª£º
ID Name
1 Jack
1 Tom
1 Ben
2 Mary
2 Simth
2 Tony
2 Jay
ÒªÇóʹÓÃSQL²éѯÍê³É£¬ÓÉÓÚÌõ¼þÏÞÖÆ£¬²»ÄÜʹÓà ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ