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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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    protected : ±£»¤³ÉÔ±£¬¸ÃÀàÄÚ²¿ºÍ¼Ì³ÐÀàÖпÉÒÔ·ÃÎÊ¡£
    public :    ¹«¹²³ÉÔ±£¬ÍêÈ«¹«¿ª£¬Ã»ÓзÃÎÊÏÞÖÆ¡£
    internal:  ÔÚÍ¬Ò ......

sql server·ÃÎÊÔ¶³ÌÊý¾Ý¿â

--´´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 µÄÏà¹Ø·Ñ½âÎÊÌâ

sql server ʱ¼ä¶Î²éѯ¡£
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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  ......

³¬¼¶SQL——ÔÚSQLÖÐÀÛ¼Ó

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  jmbdat         dayt           y           &n ......

sqlº¯Êý¡¡

1¡¢ISNULL ( check_expression , replacement_value )
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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 ......
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