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To optimize Select - SQL, Group by
Message
De
30/11/2005 02:45:08
 
 
À
29/11/2005 17:19:48
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
01073030
Message ID:
01073117
Vues:
14
>Hi, is it possible to make Rushmore optimization work here:?
>
>Table1's PK expression is PKF1 + PKF2
>
>
>Select PKF1, PKF2, Count(1) as nDup from Table1 group by PKF1, PKF2 ;
>Having nDup > 1
>
>
>
>Do I have to add any WHERE clause or any tip to see Optimization:Full?
>
>
>Current result is "Optimization: None"
>
>Thanks.

VFP is not capable to optimize a GROUP BY query.

But if it is a PK, as can it have multiple records ?
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