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SQL Select Distinct Memo?
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00128771
Message ID:
00128782
Vues:
22
>In VFP5.0a I cant seem to select a distinct field if it's a memo field? If I do -
>
>SELECT DISTINCT baseclass FROM (lcVCXfile) INTO CURSOR (lcTempFile)
>
>I get Error 34, Operation is invalid for a Memo, General, or Picture field. (baseclass is a memo field) Yet I can do the same query without the DISTINCT clause and it is just fine. I also tried some string manipulation stuff, but it still doesnt seem to want to mix and match DISTINCT with a memo. Any ideas on how I can do this without writing multiple statements? TIA!

If you want to select just some fields DISTINCTevily and don't care what you will get in other fields, then you can:
Select field1,field2,filed3,memofield From ... Group by 1,2
i.e. you will get distinctive Field1,Field2 and just one of possible many field3,memofield (usually, grouping retains the last record from each group).
Edward Pikman
Independent Consultant
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