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Find distinct records that are not distinct
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De
16/11/2007 17:24:03
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
01269536
Message ID:
01269564
Vues:
10
>>Huh? I know, its a strange subject line. Here's my problem. Through something of a snafu we have about 600 records in a table that are improper duplicates of other records. We want to remove them. This would be easy with select distinct EXCEPT that one field "sequence" was provided to create a unique sequence number for each record. So, they are all distinct because they all have different sequence numbers. I can get around this by selecting into a cursor, deleting the sequence numbers, and then selecting dist from the cursor. This gives me the truly distinct records albeit without the sequence numbers. Now I need to put the original sequence numbers back. Any ideas on how to do this?
>
>Which one MAX() or MIN() sequence number?

Your question would only pertain to the records that had a duplicate twin. I don't think it matters. Probably the min().
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