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1.ÉùÃ÷Óαê
CURSOR mycur(vartype number) is
select emp_no,emp_zc from cus_emp_basic
where com_no = vartype;
2.´ò¿ªÓαê
open mycur(000627) ×¢£º000627:²ÎÊý
3.¶ÁÈ¡Êý¾Ý
fetch mycur into varno,varprice;
4.¹Ø±ÕÓαê
close mycur;
ÓαêµÄÊôÐÔ
oracle ÓαêÓÐ4¸öÊôÐÔ£º %ISOPEN £¬ %FOUND £¬ %NOTFOUND£¬ %ROWCOUNT
%ISOPEN ÅжÏÓαêÊÇ·ñ±»´ò¿ª£¬Èç¹û´ò¿ª%ISOPEN µÈÓÚtrue,·ñÔòµÈÓÚfalse
%FOUND %NOTFOUND ÅжÏÓαêËùÔÚµÄÐÐÊÇ·ñÓÐЧ£¬Èç¹ûÓÐЧ£¬Ôò%FOUNDDµÈÓÚtrue£¬·ñÔòµÈÓÚfalse
%ROWCOUNT ·µ»Øµ±Ç°Î»ÖÃΪֹÓαê¶ÁÈ¡µÄ¼Ç¼ÐÐÊý¡£
ʾÀý£º
set serveroutput on;
declare
varno varchar2(20);
varprice varchar2(20);
CURSOR mycur(vartype number) is
select emp_no,emp_zc from cus_emp_basic
where com_no = vartype;
begin
if mycur%isopen = false then
open mycur(000627);
end if;
fetch mycur into varno,varprice;
while mycur%found
loop
dbms_output.put_line(varno||’,’||varprice);
if mycur%rowcount=2 then
exit;
end if;
fetch mycur into varno,varprice;
end loop;
close mycur;
end;
pl/sql ¼Ç¼ µÄ½á¹¹ºÍcÓïÑÔÖеĽṹÌåÀàËÆ£¬ÊÇÓÉÒ»×éÊý¾ÝÏî¹¹³ÉµÄÂß¼µ¥Ôª¡£
pl/sql ¼Ç¼²¢²»±£´æÔÙÊý¾Ý¿âÖУ¬ËüÓë±äÁ¿Ò»Ñù£¬±£´æÔÙÄÚ´æ¿Õ¼äÖУ¬ÔÚʹÓüǼʱºò£¬ÒªÊ×Ïȶ¨Òå¼Ç¼½á¹¹£¬È»ºóÉùÃ÷¼Ç¼±äÁ¿¡£¿ÉÒÔ°Ñpl/sql¼Ç¼¿´×÷ÊÇÒ»¸öÓû§×Ô¶¨ÒåµÄÊý¾ÝÀàÐÍ¡£
set serveroutput on;
declare
type person is record
(
empno cus_emp_basic.emp_no%type,
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sql±àÒëÓëÖØ±àÒë
1.sp_recompile
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2.sp_refreshview
Èç¹ûÊÓͼËùÒÀÀµµÄ»ù´¡¶ÔÏó·¢Éú¸ü¸Ä(Èç:±íÔö¼ÓÁËÒ»¸ö×Ö¶Î)£¬ÔòÊÓͼ²»»á×Ô¶¯¸üУ¬ÕâʱÐèÒªµ÷Óøô洢¹ý³ÌÀ´¶ÔÊÓͼ½øÐÐˢС£ÓÐÈË˵£¬ÖØÐ´ò¿ªÒ»ÏÂÊÓͼ¾Í¿ÉÒÔ¸üÐÂÊÓͼ£¬µ«ÎÒÊÔÁËûÓгɹ¦¡£
Àý1£ºË¢ÐÂÖ¸¶¨Ãû³ÆµÄÊÓͼ
......
update anketo1 set fb = substring('10',fb+1,1) WHERE id =5
ºóÀ´ÎÊÁËBM,BM˵ֱ½ÓÈ¡·´
update anketo1 set fb = ~ fb WHERE id =5
ÎÒ¸æËßÁËBMÓÃsubstringÒ²¿ÉÒÔ.
BM˵:"Õâ¼Ò»ïÀ÷º¦£¬ÕâÒ²ÄÜÏë³ö,ÕâÊôÓÚаÃÅÎ书."
×îºóÓÖÏëµ½ÓÃABSÈ¡¾ø¶ÔÖµÒ²¿ÉÒÔ
update anketo1 set fb = abs(fb-1)
ÎÒ¾õµÃ²»¹ÜÊÇʲôÎ书,ÄÜÖ ......
create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ
......
µÚ¶þ²¿·Ö
1.ËùÓÐÄÐÉúµÄÐÕÃû¡¢ÄêÁä:
Select Sname£¬Sage
from student;
2.ËùÓÐÄêÁä´óÓÚ20£¬¼ÆËã»ú¿ÆÑ§ÏµÑ§ÉúÃûµ¥:
SELECT Sname
from Student
WHERE Sage>20 AND Sdept='CS';
3.³É¼¨´óÓÚ60µÄѧÉúѧºÅ:
SELECT Sno
from SC
WHERE Grade>60;
4.³É¼¨ÔÚ70µ½80Ö®¼äµÄѧÉúѧºÅ:
SELECT Sno
from SC
......