BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Problem UPDATE          BorlandTalk.com Forum Index -> Delphi Databases (Desktop) View previous topic :: View next topic   Author Message Catherine Guest Posted: Thu May 17, 2007 3:10 pm    Post subject: Problem UPDATE Hello all, I need a help for UPDATE. I have a problem this query, I don’t know how to solve. Example: UPDATE table1 SET value=100 Before UPDATE: ID____Value 1_____0 2_____0 3_____0 3_____0 3_____0 4_____0 4_____0 5_____0 6_____0 After UPDATE: ID____Value 1_____100 2_____100 3_____100 3_____100 3_____100 4_____100 4_____100 5_____100 6_____100 This isn’t good because it shows all values in each row. I want to be one ID=one Value. It means skipping row if exists double ID. Solving likes this example, have a look: After UPDATE: ID____Value 1_____100 2_____100 3_____100 3_____0 3_____0 4_____100 4_____0 5_____100 6_____100 How? Thanks in advance. Catherine. Back to top Wayne Niddery [TeamB] Guest Posted: Thu May 17, 2007 11:39 pm    Post subject: Re: Problem UPDATE Catherine wrote: Quote: I want to be one ID=one Value. It means skipping row if exists double ID. Solving likes this example, have a look: After UPDATE: ID____Value 1_____100 2_____100 3_____100 3_____0 3_____0 4_____100 4_____0 5_____100 6_____100 The problem is allowing there to be multiple rows with exactly same data. Are there any other fields in these rows that makes them unique, e.g. the two rows with ID=4, is there anything else that lets you select one of these two rows and not the other? If not, then why are there two+ identical rows? Also, what database are you using? This can make a difference in the possible solutions. -- Wayne Niddery - Winwright, Inc (www.winwright.ca) "Reality is that which, when you stop believing in it, doesn't go away." — Philip K. 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