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Oracle9iÒì³£´¦Àí·ÖΪϵͳԤ¶¨ÒåÒì³£´¦ÀíºÍ×Ô¶¨ÒåÒì³£´¦ÀíÁ½²¿·Ö¡£
×Ô¶¨ÒåÒì³£´¦Àí
1.¶¨ÒåÒì³£´¦Àí
declare Òì³£Ãû exception;
2.´¥·¢Òì³£´¦Àí
raise Òì³£Ãû
3.´¦ÀíÒì³£
exception
when Òì³£Ãû1 then
    Òì³£´¦ÀíÓï¾ä¶Î1;
when Òì³£Ãû2 then
    Òì³£´¦ÀíÓï¾ä¶Î2;
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set serveroutput on
declare
   salaryerror  exception;
   tempsal scott.emp.sal%type;
begin
   select sal into tempsal 
   from scott.emp 
   where empno=7566;
   if tempsal<900 or tempsal>2600  then
      raise salaryerror;
   end if;    
   exception
   when salaryerror  then
     dbms_output.put_line('нˮ³¬³ö·¶Î§');
end; 


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Sql Server²é¿´ËùÓÐÊý¾Ý¿âÃû,±íÃû,×Ö¶ÎÃûSQL

1.»ñÈ¡ËùÓÐÊý¾Ý¿âÃû:
SELECT Name from Master..SysDatabases ORDER BY Name
2.»ñÈ¡ËùÓбíÃû:
SELECT Name from DatabaseName..SysObjects Where XType='U' ORDER BY Name
XType='U':±íʾËùÓÐÓû§±í;
XType='S':±íʾËùÓÐϵͳ±í;
3.»ñÈ¡ËùÓÐ×Ö¶ÎÃû:
SELECT Name from SysColumns WHERE id=Object_Id('TableNam ......

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/*ÔÚÔ¶³Ì»úÆ÷²Ù×÷ϵͳµÄ¼ÆËã»ú¹ÜÀíÀィÁ¢Ò»¸öÓû§ÃûΪkyleµÄÓû§£¬ÃÜÂëΪ1234£¬Í¬Ê±ÔÚÄÇ̨»úÆ÷µÄ·ÇϵͳÅÌÀィһ¸öÃûΪbackupµÄ¹²ÏíÎļþ¼Ð£¬ÎªÁ˰²È«ÁíÍâÉèÖÃÕâ¸öÎļþ¼ÐÖ»ÓÐÕâ¸ökyleÓû§¿ÉÒÔ·ÃÎÊ¡£*/
declare @sql varchar(500)
select @sql='\\10.2. ......

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  jmbdat         dayt           y           &n ......
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