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SQL Select
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À
08/05/1998 09:13:17
Ranjit Londhe
Anglo Eastern Ship Mgmt Ltd.
Mumbai, Inde
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Divers
Thread ID:
00098004
Message ID:
00098263
Vues:
30
>SELECT cfieldname, count(*) AS dup_num ;
> FROM ctable ;
> GROUP BY cfieldname ;
> HAVING count(*) > 1 ;
> INTO CURSOR ctempfile
Ranjit,

Out of curiosity, why the HAVING clause? By definition there will always be at least one record for each value of the field being grouped on. Doesn;t the HAVING clause just slow things down without improving anything, or am I missing something here?
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