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Possible causes of slow query
Message
From
01/03/1999 17:32:48
 
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Miscellaneous
Thread ID:
00192035
Message ID:
00192902
Views:
22
>>I see from later dialogue that you are ready to accept this as 'normal'.
>>I would say that you should be able to get better myself, and by much too.
>>Does a BROWSE take as long when you have set the index to bed and opened the BROWSE with the Key option (for your example below)?
>>I suppose that RAM could be implicated here -large indices may not be able to be efficiently loaded?
>
>The browse take 6 to 7 seconds (even with the method above). I have 64megs of RAM on a PII.
>
>Interesting note is that if I set a relation between this large table and a parent table and then choose record in the parent table... the child records are displayed instantaneously. This means that relations between tables are implemented are a more fundamental level than a SQL statement. Perhaps I can harness this concept in my query...

Have you considered file fragmentation?
Fred
Microsoft Visual FoxPro MVP

foxcentral.net
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