Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

fastreport´òÓ¡´úÂë¼°SQLºÏ²¢×ֶεÄÓï¾ä

 procedure Tform1.Button5Click(Sender: TObject);
var
  p:pointer;
  FrfStr:string;
begin
  inherited;
  Screen.Cursor:=MYCURSORWAITHAND;
  with cdsPrint do
  begin
    Active:=false;
    //Õâ¸öSQLÓÃÓÚ½«remarkÖеļǼºÏ²¢µ½Ò»Æð!
    CommandText:='select a.ITEM_ID, a.ITEM_NAME,count(a.Coll_ID) as num,ltrim(max(sys_connect_by_path(a.remark, '';'')), '';'') remark '
      +' from (select /*+index(b,TAB_ORDER_I)*/ b.ITEM_ID,b.Coll_ID,b.ITEM_NAME,b.remark,row_number() over(partition by b.ITEM_ID order by b.ITEM_ID)'
      +' ITEM_ID1,row_number() over(order by b.ITEM_ID) + dense_rank() over(order by b.ITEM_ID) ITEM_ID2 '
      +' from TAB_ORDER b  where  b.Coll_ID ='''+DBComboBoxEh1.Text+''''
      +'  ) a'
      +' start with ITEM_ID1 = 1 connect by prior ITEM_ID2 = ITEM_ID2-1 group by a.ITEM_ID,'
      +' a.ITEM_NAME order by a.ITEM_ID ';
    Active:=true ;
  end;
  cds_Print.DisableControls;
  p:=cdsPrint.GetBookmark;
  FrfStr:='report1l.frf';
  try
    if cdsPrint.Active and (cdsPrint.RecordCount<>0) then
    begin
      frReport1.LoadfromFile(ExtractFilePath(ParamStr(0))+'Report\'+FrfStr);
      PrintSet;
      frReport1.ShowReport;
    end
    else
    begin
      Screen.Cursor:=crDefault;
      Application.MessageBox(pchar(STR_MESSAGEBOX_HEADER+'ûÓÐÊý¾Ý¿É´òÓ¡'),pchar(self.Caption),MB_OK or MB_ICONEXCLAMATION);
    end;
  finally
    cdsPrint.GotoBookmark(p);
    cdsPrint.EnableControls;
 &nb


Ïà¹ØÎĵµ£º

sql ֪ʶ

 select datediff(month,'2009-11-02','2009-12-01')
²»ÖªµÀÄãÒªÔõô¸öÔ²îÒì
ÉÏÃæµÄÃüÁî½á¹ûÒ²ÊÇ1
µ«ÊÇÆäʵ°´ÕÕ³£Ê¶²îÒì²»ÊÇÒ»¸öÔ£¬ÊDzîÒ»ÌìÒ»¸öÔÂ
ÕâÓжÎÏֳɵĴúÂë¿ÉÒÔ°ïÖúÄãËã³ö³£Ê¶ÉϵIJîÒì
SQL code
declare @t table(a datetime,b datetime);
insert @t
select '2009-11-02','2009-12-01' UNION ......

SqlserverÓëaccessÊý¾Ý¿âsqlÓ﷨ʮ´ó²îÒì

ÊÀʶ´Ã÷½ÔѧÎÊ£¬ÈËÇéÁ·´ï¼´ÎÄÕ¡£×öASPʱ£¬×î³£ÓõÄÊý¾Ý¿â¼´SqlserverÓëAccessÊý¾Ý¿âĪÊôÁË£¡
µ«Ê¹Óûᾭ³£·¢ÏֺܶàSQLÖ´ÐеÄÎÊÌâ¡£ÕâÀïÕûÀí³öÖ®¼äµÄ²îÒ죬×ö¸öÊ®´ó²îÒìµÄ×ܽᡣ
ACCESS½á¹¹¼òµ¥ÈÝÒ×´¦Àí£¬¶øÇÒÒ²ÄÜÂú×ã¶àÊýµÄÍøÕ¾³ÌÐòÒªÇó£¬Ò²ÊdzõѧÕßµÄÊÔÅ£µ¶¡£
ACCESSÊÇСÐÍÊý¾Ý¿â£¬¼ÈÈ»ÊÇСÐ;ÍÓÐËû¸ù±¾µÄ¾ÖÏÞÐÔ£º
......

×Ô¶¯¶¨Ê±ÖØÆôsql server»ØÊÕÄÚ´æ

¡¡×î½üΪÊý¾Ý¿â·þÎñÆ÷Ôö¼ÓÁËÄڴ棬´ïµ½ÁË×î´óÖ§³ÖµÄ8G£¬Êý¾Ý¿âÓõÄÊÇmssql 2005 £¬Ö®Ç°ÄÚ´æÒ»Ö±ÊÇ4GµÄ£¬²»´æÔÚÄÚ´æ´óºÍ32λ²Ù×÷ϵͳ³åÍ»µÄÊÂÇ飬32λ²Ù×÷ϵͳµ¥½ø³Ì×î´óÖ§³Ö2GµÄÄڴ棬ÕâÑù×ӵϰÄÚ´æ¾Í°×¼ÓÁË£¬Ôõô°ìÄØ?
¡¡¡¡ÍøÉÏËÑË÷Á˺ܶà×ÊÁÏ£¬·¢ÏÖ΢ÈíÌṩÁËÒ»¸öËãÊÇÁÙʱµÄ½â¾ö·½°¸°É£¬Ê¹ÓÃAWEÀ´·ÖÅäÄڴ棬ÕâÑù×Ósqlse ......

SQLÖÐonÌõ¼þÓëwhereÌõ¼þµÄÇø±ð (having)

 
 
SQLÖÐonÌõ¼þÓëwhereÌõ¼þµÄÇø±ð
      Êý¾Ý¿âÔÚͨ¹ýÁ¬½ÓÁ½ÕÅ»ò¶àÕűíÀ´·µ»Ø¼Ç¼ʱ£¬¶¼»áÉú³ÉÒ»ÕÅÖмäµÄÁÙʱ±í£¬È»ºóÔÙ½«ÕâÕÅÁÙʱ±í·µ»Ø¸øÓû§¡£
     ÔÚʹÓÃleft jionʱ£¬onºÍwhereÌõ¼þµÄÇø±ðÈçÏ£º
1¡¢ onÌõ¼þÊÇÔÚÉú³ÉÁÙʱ±íʱʹÓõÄÌõ¼ ......

SQL×¢Èë

Ëæ×ÅB/SģʽӦÓÿª·¢µÄ·¢Õ¹£¬Ê¹ÓÃÕâÖÖģʽ±àдӦÓóÌÐòµÄ³ÌÐòÔ±Ò²Ô½À´Ô½¶à¡£µ«ÊÇÓÉÓÚÕâ¸öÐÐÒµµÄÈëÃÅÃż÷²»¸ß£¬³ÌÐòÔ±µÄˮƽ¼°¾­ÑéÒ²²Î²î²»Æë£¬Ï൱´óÒ»²¿·Ö³ÌÐòÔ±ÔÚ±àд´úÂëµÄʱºò£¬Ã»ÓжÔÓû§ÊäÈëÊý¾ÝµÄºÏ·¨ÐÔ½øÐÐÅжϣ¬Ê¹Ó¦ÓóÌÐò´æÔÚ°²È«Òþ»¼¡£Óû§¿ÉÒÔÌá½»Ò»¶ÎÊý¾Ý¿â²éѯ´úÂ룬¸ù¾Ý³ÌÐò·µ»ØµÄ½á¹û£¬»ñµÃijЩËûÏëµÃÖªµÄÊ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ