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How to make this SQL rushmore optimized
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Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01459829
Message ID:
01459838
Vues:
50
>>>>>An index on pkfield ought to do it.
>>>>>
>>>>>What data type is pkfield?
>>>>
>>>>Correction. The field is Numeric(6,0) but there is an index tag on this field. Yet, Rushmore is not used.
>>>
>>>Try
>>>
>>>select * from myTable where pkfield IN (select top 100 pkfield from myTable order by pkfield DESC)
>>
>>Nope. This does not work either.
>
>Check this thread How does TOP work? Thread #1362672

Thank you.
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