PL/SQLѧϰ±Ê¼ÇÁù
1.´´½¨¹ý³Ì
create or replace procedure ¹ý³ÌÃû as
ÉùÃ÷Óï¾ä¶Î;
begin
Ö´ÐÐÓï¾ä¶Î;
exception
Òì³£´¦ÀíÓï¾ä¶Î;
end;
2. ´ø²ÎÊýµÄ¹ý³Ì
²ÎÊýÀàÐÍ3ÖÖ
in²ÎÊý£º¶ÁÈë²ÎÊý£¬Ö÷³ÌÐòÏò¹ý³Ì´«µÝ²ÎÊýÖµ
out²ÎÊý£ºÊä³ö²ÎÊý£¬¹ý³ÌÏòÖ÷³ÌÐò´«µÝ²ÎÊýÖµ
in out²ÎÊý£ºË«Ïò²ÎÊý
¶¨Òå´ø²ÎÊýµÄ¹ý³ÌʾÀý£º
Set serveroutput on
create or replace procedure scott.tempprocedure(
tempdeptno in scott.dept.deptno%type, --ÊäÈë²ÎÊý
tempdname out scott.dept.dname%type, --Êä³ö²ÎÊý
temploc in out scott.dept.loc%type) as -- Ë«Ïò²ÎÊý
loc1 scott.dept.loc%type;
dname1 scott.dept.dname%type;
begin
select loc into loc1
from scott.dept
where deptno=tempdeptno;
select dname into dname1
from scott.dept
where deptno=tempdeptno;
temploc:='µØÖ·:'||loc1;
tempdname:='ÐÕÃû'||dname1;
end;
ʹÓôø²ÎÊýµÄ¹ý³ÌʾÀý£º
set serveroutput on
declare
myno scott.dept.deptno%type;
mydname scott.dept.dname%type;
myloc scott.dept.loc%type;
begin
myno:=10;
mydname:='';
myloc:='';
scott.tempprocedure(myno,mydname,myloc);
dbms_output.put_line(myno);
dbms_output.put_line(mydname);
dbms_output.put_line(myloc);
end;
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´ð . private : ˽ÓгÉÔ±, ÔÚÀàµÄÄÚ²¿²Å¿ÉÒÔ·ÃÎÊ¡£
protected : ±£»¤³ÉÔ±£¬¸ÃÀàÄÚ²¿ºÍ¼Ì³ÐÀàÖпÉÒÔ·ÃÎÊ¡£
public : ¹«¹²³ÉÔ±£¬ÍêÈ«¹«¿ª£¬Ã»ÓзÃÎÊÏÞÖÆ¡£
internal: ÔÚÍ¬Ò ......
--´´½¨Á´½Ó·þÎñÆ÷
exec sp_addlinkedserver 'ITSV ', ' ', 'SQLOLEDB ', 'Ô¶³Ì·þÎñÆ÷Ãû»òipµØÖ· '
exec sp_addlinkedsrvlogin 'ITSV ', 'false ',null, 'Óû§Ãû ', 'ÃÜÂë '
--²éѯʾÀý
select * from ITSV.Êý¾Ý¿âÃû.dbo.±íÃû
--µ¼ÈëʾÀý
select * into ±í from ITSV.Êý¾Ý¿âÃû.dbo.±íÃû
--ÒÔºó²» ......
sql server ʱ¼ä¶Î²éѯ¡£
==========================================
select g.borrowTime from t_apartment_goodsborrow g
where g.borrowTime >= '2010-03-11 9:50:43'
2010-03-11 9:52:54
----------------------------------------------------------------------------
select g.borrowTime ......
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====================Question
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jmbdat dayt y &n ......
1¡¢ISNULL ( check_expression , replacement_value )
²ÎÊý
check_expression
½«±»¼ì²éÊÇ·ñΪ NULLµÄ±í´ïʽ¡£check_expression ¿ÉÒÔÊÇÈκÎÀàÐ͵ġ£
replacement_valueÔÚ check_expressionΪNULLʱ½«·µ»ØµÄ±í´ïʽ¡£replacement_value ±ØÐëÓë check_expresssion ¾ßÓÐÏàͬµÄÀàÐÍ¡£
·µ»ØÀàÐÍ
·µ»ØÓë check_expression Ï ......