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

²é³öË­µÄ½±½ð×ܺÏÊÇ×î¸ßµÄ£¬SQLÓï¾ä

 Ô­ÎÄ´«ËÍÃÅ£ºhttp://topic.csdn.net/u/20091119/17/388cd1dd-4018-403f-a97f-0bc135895264.html?85256
Êý¾Ý¿âÀýÈç:
id      ÐÕ  Ãû  ½±  ½ð
1        ÕÅÈý    20Íò
2        ÀîËÄ    10Íò
3        ÍõÒ»    5Íò
4        ÍõÒ»    50Íò
5        ÀîËÄ    6Íò
ÎÒҪʵÏÖÏÂÃæµÄЧ¹û
id      ÐÕ  Ãû  ½±  ½ð
4        ÍõÒ»      55Íò
²é³öË­µÄ½±½ð×ܺÏÊÇ×î¸ßµÄ£¬SQLÓï¾äÓ¦¸ÃÔõôд
½¨±íÓï¾ä
-- Create table
create table TEST111
(
ID NUMBER,
NAME VARCHAR2(10),
T NUMBER
)
SQLÓï¾ä
SELECT A.ID, A.NAME, A.T, A.AA
from (SELECT T.ID, T.NAME, T.T, SUM(T.T) OVER(PARTITION BY T.NAME) AS AA
from TEST111 T
ORDER BY AA DESC

) A
WHERE ROWNUM = 1


Ïà¹ØÎĵµ£º

SQLÊý¾Ý¿â¿ª·¢ÖеÄһЩ¾«µä´úÂë

ÕýÔÚ¼ÓÔØÊý¾Ý...
¡¡¡¡1.°´ÐÕÊϱʻ­ÅÅÐò: select * from TableName Order By CustomerName Collate Chinese_PRC_Stroke_ci_as
¡¡¡¡2.Êý¾Ý¿â¼ÓÃÜ: select encrypt(’ԭʼÃÜÂë’) select pwdencrypt(’ԭʼÃÜÂë’) select pwdcompare(’ԭʼÃÜÂë’,’¼ÓÃܺóÃÜÂë’) = 1--Ïàͬ£»·ñÔ ......

ÎÞ·¨Á¬½Óа²×°µÄSQL Server 2005 Express

½ñÌìÔÚµçÄÔÉϰ²×°ÁËVisual Studio 2005£¬ÀïÃæ×Ô´øÁËÒ»¸öSQL Server 2005 Express¡£°²×°Íê³ÉÖ®ºó½øÈëVS£¬Ð½¨Ò»¸öÊý¾Ý¿âÏîÄ¿£¬Ôړн¨Êý¾Ý¿âÒýÓÔһ²½Óöµ½ÁËÆæ¹ÖµÄÎÊÌâ¡£
ÔÚ·þÎñÆ÷ÃûµÄÏÂÀ­ÁбíÀïÃæ£¬Í¨¹ýµã»÷“ˢД°´Å¥¿ÉÒÔÏÔʾµ±Ç°Í¨¹ýÍøÂç¿ÉÒÔÁ¬½Óµ½µÄÊý¾Ý¿âµÄÐÅÏ¢£¬ÆäÖÐÓÐÎÒµÄÖ÷»ú¡£È»¶ø£¬Ñ¡ÔñÁ ......

ʹÓÃSQL SERVER´æ´¢¹ý³ÌʵÏÖÒøÐÐתÕËÒµÎñ

ÔÚÒøÐнðÈÚϵͳÖУ¬ÎÒÃdz£³£¶¼ÒªÊµÏÖÒøÐÐתÕËÕâÑùµÄÒµÎñ²Ù×÷£¬¶øÕâÖÖ½ðÈÚϵͳ²¢·¢ÐÔÏ൱¸ß£¬ÐèÒª¿¼ÂǵÄÈçºÎÌá¸ßÐÔÄܺͱ£Ö¤°²È«ÐÔµÈÏà¹ØµÄÎÊÌ⡣ʹÓô洢¹ý³ÌÀ´ÊµÏÖÒøÐÐתÕËÊÇÒ»¸öºÜºÃµÄÑ¡Ôñ¡£
SQL SERVERÊý¾Ý¿âÖеĴ洢¹ý³ÌÏà¶ÔÓÚÓ¦ÓóÌÐòÖÐÀ´²Ù×÷Transact-SQLÓïÑÔµÄÓÅȱµã£º
Óŵ㣺
1.     & ......

oracle¸ß¼¶sqlµÄ²Î¿¼×ÊÁÏ

 1.¼¯ºÏ²Ù×÷
ѧϰoracleÖм¯ºÏ²Ù×÷µÄÓйØÓï¾ä£¬ÕÆÎÕunion,union all,minus,interestµÄʹÓÃ,Äܹ»ÃèÊö½áºÏÔËË㣬²¢ÇÒÄܹ»½«¶à¸ö²éѯ×éºÏµ½Ò»¸ö²éѯÖÐÈ¥£¬Äܹ»¿ØÖÆÐзµ»ØµÄ˳Ðò¡£
°üº¬¼¯ºÏÔËËãµÄ²éѯ³ÆÎª¸´ºÏ²éѯ¡£¼û±í¸ñ1-1
±í1-1
Operator         Returns       ......

SQL*PLUSÃüÁî sql±à³ÌÊÖ²á

 Ò»¡¢SQL PLUS
1 ÒýÑÔ
SQLÃüÁî
ÒÔÏÂ17¸öÊÇ×÷ΪÓï¾ä¿ªÍ·µÄ¹Ø¼ü×Ö£º
alter  drop  revoke
audit  grant  rollback*
commit*  insert  select
comment  lock  update
create  noaudit  validate
delete  rename
ÕâЩÃüÁî±ØÐëÒÔ“;&rdqu ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ