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Article #173Re: ��ô��spl���ƶ�ƽ��
From: Galaxy��VOLUNTEERS��Database
Date: Fri, 17 Jul 2009 07:40
Date: Fri, 17 Jul 2009 07:40
27 lines
1713 bytes
1713 bytes
�������������Ϊ���� ��ǰ����һ���? http://bbs.sjtu.edu.cn/file/database/124781641449192.jpg Ȼ��ʹ�����²�ѯ�� SELECT ID, Price, (Select sum(Price) from Table1 where ID between b.ID and b.ID-4)/ iif(ID>5,5,ID) AS MovingAvg FROM Table1 AS b; ������£� http://bbs.sjtu.edu.cn/file/database/124781643649390.jpg �� �� Cissnei (СC�Ů���ʹ��Smiling Flying~) �Ĵ������ᵽ: ��: -��=b : �Һ���...������~~ : �� �� Programmer (12) �Ĵ������ᵽ: �� : : ���ϲο��ܶ� : : http://www.access-programmers.co.uk/forums/showthread.php?t=37137 : : http://support.microsoft.com/default.aspx?scid=kb;en-us;Q143237 -- Welcome to Database Board ��ӭ������ݿ�� http://bbs.sjtu.edu.cn/bbsdoc?board=database [m[1;34m�� ��Դ:����ˮ˼Դ bbs.sjtu.edu.cn��[FROM: 207.46.55.27][m
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arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!news.neu.edu.cn!news.shec6.edu.cn!SJTUShow Full Headers
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X-Google-Thread: 4df683fd51,cd44c281e07e426b,start X-Google-Attributes: gid4df683fd51,public,usenet X-Google-NewGroupId: yes X-Google-Language: Chinese,GB Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!news.neu.edu.cn!news.shec6.edu.cn!SJTU From: Dem.bbs@bbs.sjtu.edu.cn (Galaxy��VOLUNTEERS��Database) Newsgroups: cn.bbs.comp.database Subject: Re: ��ô��spl���ƶ�ƽ�� Date: 17 Jul 2009 07:40:45 GMT Organization: ��ˮ˼Դ Message-ID: <4h32jT$bCh@bbs.sjtu.edu.cn> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit X-Filename: database/M.1247816333.A Lines: 26