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

Oracle SQL¾«ÃîSQLÓï¾ä½²½â


--ÐÐÁÐת»» ÐÐתÁÐ
DROP TABLE t_change_lc;
CREATE TABLE t_change_lc (card_code VARCHAR2(3), q NUMBER, bal NUMBER);
INSERT INTO t_change_lc
SELECT '001' card_code, ROWNUM q, trunc(dbms_random.VALUE * 100) bal from dual CONNECT BY ROWNUM <= 4
UNION
SELECT '002' card_code, ROWNUM q, trunc(dbms_random.VALUE * 100) bal from dual CONNECT BY ROWNUM <= 4;
SELECT * from t_change_lc;
SELECT a.card_code,
SUM(decode(a.q, 1, a.bal, 0)) q1,
SUM(decode(a.q, 2, a.bal, 0)) q2,
SUM(decode(a.q, 3, a.bal, 0)) q3,
SUM(decode(a.q, 4, a.bal, 0)) q4
from t_change_lc a
GROUP BY a.card_code
ORDER BY 1;
--ÐÐÁÐת»» ÁÐתÐÐ
DROP TABLE t_change_cl;
CREATE TABLE t_change_cl AS
SELECT a.card_code,
SUM(decode(a.q, 1, a.bal, 0)) q1,
SUM(decode(a.q, 2, a.bal, 0)) q2,
SUM(decode(a.q, 3, a.bal, 0)) q3,
SUM(decode(a.q, 4, a.bal, 0)) q4
from t_change_lc a
GROUP BY a.card_code
ORDER BY 1;
SELECT * from t_change_cl;
SELECT t.card_code,
t.rn q,
decode(t.rn, 1, t.q1, 2, t.q2, 3, t.q3, 4, t.q4) bal
from (SELECT a.*, b.rn
from t_change_cl a,
(SELECT ROWNUM rn from dual CONNECT BY ROWNUM <= 4) b) t
ORDER BY 1, 2;
--ÐÐÁÐת»» ÐÐתÁÐ ºÏ²¢
DROP TABLE t_change_lc_comma;
CREATE TABLE t_change_lc_comma AS SELECT card_code,'quarter_'||q AS q from t_change_lc;
SELECT * from t_change_lc_comma;
SELECT t1.card_code, substr(MAX(sys_connect_by_path(t1.q, ';')), 2) q
from (SELECT a.card_code,
a.q,
row_number() over(PARTITION BY a.card_code ORDER BY a.q) rn
from t_change_lc_comma a) t1
START WITH t1.rn = 1
CONNECT BY t1.card_code = PRIOR t1.card_code
AND t1.rn - 1 = PRIOR t1.rn
GROUP BY t1.card_code;
--ÐÐÁÐת»» ÁÐתÐÐ ·Ö¸î
DROP TABLE t_change_cl_comma;
CREATE TABLE t_change_cl_comma AS
SELECT t1.card_code, substr(MAX(sys_connect_by_path(t1.q, ';')), 2) q
from (SELECT a.card_code,
a.q,
row_number() over(PARTITION BY a.card_code ORDER BY a.q) rn
from t_change_lc_comma a) t1
START WITH t1.rn = 1
CONNECT BY t1.card_code = PRIOR t1.card_code
AND t1.rn - 1 = PRIO


Ïà¹ØÎĵµ£º

oracle ±í¿Õ¼ä²Ù×÷

oracle±í¿Õ¼ä²Ù×÷Ïê½â
  1
  2
  3×÷Õߣº   À´Ô´£º    ¸üÐÂÈÕÆÚ£º2006-01-04 
  5
  6 
  7½¨Á¢±í¿Õ¼ä
  8
  9CREATE TABLESPACE data01
 10DATAFILE '/ora ......

½ÌÄãÍæתSQL Server´æ´¢¹ý³Ì

 Ê×ÏȽéÉÜÒ»ÏÂʲôÊÇ´æ´¢¹ý³Ì£º´æ´¢¹ý³Ì¾ÍÊǽ«³£ÓõĻòºÜ¸´ÔӵŤ×÷£¬Ô¤ÏÈÓÃSQLÓï¾äдºÃ²¢ÓÃÒ»¸öÖ¸¶¨µÄÃû³Æ´æ´¢ÆðÀ´£¬²¢ÇÒÕâÑùµÄÓï¾äÊÇ·ÅÔÚÊý¾Ý¿âÖеģ¬»¹¿ÉÒÔ¸ù¾ÝÌõ¼þÖ´Ðв»Í¬SQLÓï¾ä£¬ ÄÇôÒÔºóÒª½ÐÊý¾Ý¿âÌṩÓëÒѶ¨ÒåºÃµÄ´æ´¢¹ý³ÌµÄ¹¦ÄÜÏàͬµÄ·þÎñʱ£¬Ö»Ðèµ÷ÓÃexecute,¼´¿É×Ô¶¯Íê³ÉÃüÁî¡£
¡¡¡¡Çë´ó¼ÒÀ´Á˽âÒ»ÏÂ´æ´ ......

Oracle»ù´¡ÖªÊ¶

Q1.ÔõÑù´´½¨±í£¿
Q2.ÔõÑùɾ³ý±í£¿
Q3.ÔõÑù´´½¨ÊÓͼ£¿
Q4.ÔõÑùɾ³ýÊÓͼ£¿
Q5.ÔõÑù¸ø±íÌí¼Ó×ֶΣ¿
Q6.ÔõÑùɾ³ý±íÖÐij¸ö×ֶΣ¿
Q7.ÔõÑù¸øij¸ö×Ö¶ÎÌí¼ÓÔ¼Êø£¿
Q8.ÔõÑùÈ¥³ýij¸ö×Ö¶ÎÉϵÄÔ¼Êø£¿
Q9.ÔõÑù¸ø±í¼ÓÉÏÖ÷¼ü£¿
Q10.ÔõÑùɾ³ý±íµÄÖ÷¼ü£¿
Q11.ÔõÑù¸ø±íÌí¼ÓÒ»¸öÍâ¼ü£¿
......

Oracle²é詢歷Ê·²Ù×÷記錄

 1.ÒÔsysdbaÉí·Ý進Èë
 2.show parameter audit
 3.alter system set audit_sys_operations = true scope = spfile
 4.alter system set audit_trail = db,extended scope = spfile
 5.startup force
 6.show parameter audit
 7.audit select table,insert table,delete ta ......

OracleµÄrownumÔ­ÀíºÍʹÓÃ(·ÖÒ³²éѯ)

 
ÒªÏÔʾ1µ½2ÐÐÔò¿ÉÒÔͨ¹ý
select * from dangan where rownum between 1 and 2
ÔÚOracle
ÖУ¬Òª°´Ìض¨Ìõ¼þ²éѯǰNÌõ¼Ç¼£¬Óøörownum
¾Í¸ã¶¨ÁË¡£
select *
from emp where rownum
<= 5
¶øÇÒÊéÉÏÒ²¸æ½ë£¬²»ÄܶÔrownum
ÓÃ">"£¬ÕâÒ²¾ÍÒâζ×Å£¬Èç¹ûÄãÏëÓÃ
select * from emp
where row ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ