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Article #1197Re: ��β����Ӳ�ѯѡ����ij�ֶ����ֵ�ļ�¼��
From: CNM��˿
Date: Sun, 20 Jan 2008 09:34
Date: Sun, 20 Jan 2008 09:34
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1359 bytes
SELECT A,MAX(B) FROM TAB T1 INNER JOIN TAB T2 ON T1.A=T2.A WHERE other conditions GROUP BY A ����������ϰ�ѧ��ѧ�ģ����ڼDz����� �� �� IKWYDLS (ikwydls) �Ĵ������ᵽ: �� : ͨ�������������Բ�ѯ�ģ� : Ҫ��ѯ�ֶ�A����ֵͬ�£�����B�� : **** : SELECT A, B FROM TAB T1 : WHERE B = ( : SELECT MAX(B) FROM TAB T2 : WHERE T1.A = T2.A AND : other conditions : ) AND : other conditions : .................������ʡ�ԣ� -- http://cnm.65536.cn [m[1;34m�� ��Դ:����ˮ˼Դ bbs.sjtu.edu.cn��[FROM: 116.226.100.251][m
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X-Google-Thread: 101948,e7dc1a0989ef5d50,start X-Google-Attributes: gid101948,public,usenet X-Google-Language: Chinese,GB Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!news.glorb.com!news.szu.edu.cn!news.shec6.edu.cn!SJTU From: CNMfans.bbs@bbs.sjtu.edu.cn (CNM��˿) Newsgroups: cn.bbs.comp.database Subject: Re: ��β����Ӳ�ѯѡ����ij�ֶ����ֵ�ļ�¼�� Date: 20 Jan 2008 09:34:27 GMT Organization: ��ˮ˼Դ Message-ID: <4YA5hg$aWk@bbs.sjtu.edu.cn> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit X-Filename: database/M.1200821562.A