BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Help me?          BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) View previous topic :: View next topic   Author Message Bpk. Adi Wira Kusuma Guest Posted: Mon Jul 25, 2005 2:03 am    Post subject: Help me? I've data like this noid fdate ftime fstatus --------------------------------------- 1 1/1/2005 1/1/2005 6:30:00 1 1 1/1/2005 1/1/2005 6:30:00 1 1 1/1/2005 1/1/2005 6:31:00 1 1 1/1/2005 1/1/2005 16:30:00 1 1 1/1/2005 1/1/2005 16:30:00 0 1 1/1/2005 1/1/2005 16:33:00 0 1 1/1/2005 1/1/2005 16:33:00 0 2 1/1/2005 1/1/2005 6:27:00 1 2 1/1/2005 1/1/2005 6:28:00 1 2 1/1/2005 1/1/2005 6:32:00 1 2 1/1/2005 1/1/2005 16:30:00 0 2 1/1/2005 1/1/2005 16:31:00 0 2 1/1/2005 1/1/2005 16:45:00 0 2 1/1/2005 1/1/2005 16:45:00 0 I want to delete. if fstatus =1 so fisrt record (min(Ftime)) of group noid,fdate is not deleted. but if fstatus =0 so last record (max(Ftime)) of group noid,fdate is not deleted. So its data will be; noid fdate ftime fstatus --------------------------------------- 1 1/1/2005 1/1/2005 6:30:00 1 1 1/1/2005 1/1/2005 16:33:00 0 2 1/1/2005 1/1/2005 6:27:00 1 2 1/1/2005 1/1/2005 16:45:00 0 Can u help me? How sintax sql? Can it be solved with one statement? Back to top Yannis Guest Posted: Mon Jul 25, 2005 5:57 am    Post subject: Re: Help me? "Bpk. Adi Wira Kusuma" <adi_wira_kusuma (AT) yahoo (DOT) com.sg> wrote in news:42e44c73 (AT) newsgroups (DOT) borland.com: Quote: Can u help me? How sintax sql? Can it be solved with one statement? Try the following sql Delete From Table1 T1 where (FStatus = 1 and FTime >(Select min(Ftime) from Table1 T2 Where T2.noid = T1.noid and T2.Fdate = T1.Fdate)) OR (FStatus = 0 and FTime < (Select max(Ftime) from Table1 T3 Where T3.noid = T1.noid and T3.Fdate = T1.Fdate)) I think it will do the job Disclaimer : The above statement has been keyed in directly to the news client and never tested on any sql server. It has been written with a background of MSSQL server and I do not know if it will work on any other server. Changes probably required in order to make it work for your purposes. Regards Yannis. 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