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1.2.1 /etc/profile Îļþ
ϵͳ¼¶µÄ»·¾³±äÁ¿Ò»°ãÔÚ/etc/profile ÎļþÖж¨Òå ÔÚ CAMS ϵͳ ÓëÊý¾Ý¿â
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export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/8.1.7
export PATH=$PATH/ORACLE_HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib
export ORACLE_SID=cams
export ORACLE_TERM=vt100
export ORA_NLS33=$ORACLE_HOME/ocommon/nls/admin/data
export NLS_LANG=AMERICAN.ZHS16CGB231280
& ˵Ã÷
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ʱ Óà µ½ ÁË ORACLE_BASE ÄÇ Ã´ ORACLE_HOME µÄ ¶¨ Òå Ó¦ ¸Ã ÔÚ
ORACLE_BASEÖ®ºó
2 ÔÚʹÓÃÖÐÎÄ°æ CAMS ʱ »·¾³±äÁ¿ NLS_LANG µÄÖµÓ¦¸ÃÉèÖÃΪ
Ïà¹ØÎĵµ£º
·ÖÒ³²éѯ¸ñʽ£º
SELECT * from
(
SELECT A.*, ROWNUM RN
from (SELECT * from TABLE_NAME) A
WHERE ROWNUM <= 40
)
WHERE RN >= 21
ÆäÖÐ×îÄÚ²ãµÄ²éѯSELECT * from TABLE_NAME±íʾ²»½øÐзҳµÄÔʼ²éѯÓï¾ä¡£ROWNUM <= 40ºÍRN >= 21¿ØÖÆ·ÖÒ³²éѯµÄÿҳµÄ·¶Î§¡£
ÉÏÃæ¸ø³öµÄÕâ¸ö·ÖÒ³²éѯÓï¾ä£¬ÔÚ´ó¶à ......
create or replace type mytype IS TABLE OF varchar2(20);
declare type1 mytype :=mytype('1','2','3','4');
i number:=1;
var_str varchar(20):='liaomin';
begin
type1.EXTEND;
type1(type1.COUNT):=var_str;
loop
dbms_output.put_line(type1(i));
i:=i+1;
exit when i=type1.count+1; ......
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¡¡¡¡1) »á»°ÌØÓеÄÁÙʱ±í
¡¡¡¡CREATE GLOBAL TEMPORARY ( )
¡¡¡¡ON COMMIT PRESERVE ROWS£»
¡¡¡¡2) ÊÂÎñÌØÓеÄÁÙʱ±í
¡¡¡¡CREATE GLOBAL TEMPORARY ( )
¡¡¡¡O ......
-- ɾ³ýÖظ´¼Ç¼
DELETE from mytable t1 WHERE ROWID > (SELECT MIN (ROWID) from mytable t2 WHERE t1. key = t2.key);
-- µ±Ç°ÈÕÆÚ
SELECT TO_CHAR(SYSDATE, 'yyyy-MM-dd') from DUAL;
-- ÉÏÔµ±Ç°ÈÕÆÚ
SELECT TO_CHAR(ADD_MONTHS(SYSDATE,
-1), 'yyyy-MM-dd') from DUAL;
-- ÏÂÔµ±Ç°ÈÕÆÚ
SELECT
TO_C ......
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ÊÇÔÚ±íÉÏ»òÕßijЩÇé¿öϵÄÊÓͼÉÏÖ´Ð ......