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Help Optimizing a query
Message
De
10/08/2001 15:57:49
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00542086
Message ID:
00542493
Vues:
16
1. I am accessing the data locally.
2. The total number of records is 7,127.
3. The speed is approximately 17 seconds with this data set.

>Did you access this table locally or through the network? What's the number of records in a table and what speed do you get?
>
>
>
>>SET DELETED is OFF.
>>
>>The ANSI setting is OFF.
>>
>>I'm not sure what you are saying about the PADR, but I am willing to try it.
>>
>>Here are the results of the Sys(3054,11)
>>Using Index tag Upperramp to rushmore optimize table vindata
>>Using Indes tag HourCount to rushmore optimize table vindata
>>Using index tag UpperVend to rushmore optimize table vindata
>>Rushmore optimization level for table vindata: full
>>
>>I have removed the two clauses in the where that were checking for empty.
>>
>>>Try with SET DELETED OFF to test the speed difference.
>>>
>>>Also what are the SET ANSI setting? Try to use the whole length expression on the right side, e.g., if Ramp (what is it, BTW?) is 20 chars, you should use variable lcRamp=padr('CHICAGO',20), etc.
>>>
>>>You can try to drop index keys and run it again. Also show us, what SYS(3054,11) returned.
>>>
>>>snip<
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