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1.»ù±¾½á¹¹
CREATE OR REPLACE PROCEDURE ´æ´¢¹ý³ÌÃû×Ö
(
²ÎÊý1 IN NUMBER,
²ÎÊý2 IN NUMBER
) IS
±äÁ¿1 INTEGER :=0;
±äÁ¿2 DATE;
BEGIN
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END ´æ´¢¹ý³ÌÃû×Ö
2.SELECT INTO STATEMENT
½«select²éѯµÄ½á¹û´æÈëµ½±äÁ¿ÖУ¬¿ÉÒÔͬʱ½«¶à¸öÁд洢¶à¸ö±äÁ¿ÖУ¬±ØÐëÓÐÒ»Ìõ
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BEGIN
SELECT col1,col2 into ±äÁ¿1,±äÁ¿2 from typestruct where xxx;
EXCEPTION
WHEN NO_DATA_FOUND THEN
xxxx;
END;
...
3.IF ÅжÏ
IF V_TEST=1 THEN
BEGIN
do something
END;
END IF;
4.while Ñ»·
WHILE V_TEST=1 LOOP
BEGIN
XXXX
END;
END LOOP;
5.±äÁ¿¸³Öµ
V_TEST := 123;
6.ÓÃfor in ʹÓÃcursor
...
IS
CURSOR cur IS SELECT * from xxx;
BEGIN
FOR cur_result in cur LOOP
BEGIN
V_SUM :=cur_result.ÁÐÃû1+cur_result.ÁÐÃû2
END;
END LOOP;
END;
7.´ø²ÎÊýµÄcursor
CURSOR C_USER(C_ID NUMBER) IS SELECT NAME from USER WHERE TYPEID=C_ID;
OPEN C_USER(±äÁ¿Öµ);
LOOP 54ne.com
FETCH C_USER INTO V_NAME;
EXIT FETCH C_USER%NOTFOUND;
do something
END LOOP;
CLOSE C_USER;
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select * from emp where rownum <= 5
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select * from emp where rownum > 5
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1. select * from emp;
2. select empno, ename, job from emp;
3. select empno ±àºÅ, ename ÐÕÃû, job ¹¤×÷ from emp;
4. select job from emp;
5. select distinct job from emp;
6. select distinct empno, job from emp;
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alter system kill session 'sid,serial#' ;
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--kill sessionÓï¾ä
alter system kill session'50,492';
--ÒÔϼ¸¸öΪÏà¹Ø±í
SELECT * from v$lock;
SELECT * from v$sqlarea;
SELECT * from v$session;
SELECT * from v$process ;
SELECT * from v$locked_object;
SELECT * from all_ ......