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Updating records in FoxPro tables
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Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00565010
Message ID:
00565082
Vues:
32
>>>>I have some dupe records that are causing me problems and I need to delete one of the dupes for each record in several tables. Is there a way to do that without deleting each individual record by hand? Is there a way to do it using the command line?
>>>
>>>select KeyID, <b>recno() as RecNum</b>, count(*) as CntDups from yourtable group by KeyID ;
>>>       having CntDups > 1 ;
>>>       into cursor curDupes
>>>index on KeyID tag KeyID
>>>select yourtable
>>>set relation to KeyID into curDupes
>>>delete for found('curDupes') and recno()=curDupes.RecNum && One of the dupes would be deleted
>>
>>Unfortunately, this code would delete all duplicate records not just one of them.
>
>Oops, what I was thinking :) Ok, how about new version (see changes in bold)

Sorry, not going to work eaither because RECNO() doesn't work properly with GROUP BY clause.
--sb--
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