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Select Count(*) performance
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04/08/2006 17:35:11
 
 
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Forum:
Visual FoxPro
Catégorie:
Autre
Titre:
Select Count(*) performance
Versions des environnements
Visual FoxPro:
VFP 8
OS:
Windows XP
Network:
Windows XP
Database:
Visual FoxPro
Divers
Thread ID:
01143102
Message ID:
01143102
Vues:
56
Hello.
I have a table with 200 000 records. (not much i think)
I do next SQL Select to display how many products in each group

Select group, Count(*) As _count;
FROM table;
Where table.manufactureID = manufactureID;
GROUP By group;
ORDER By group;
Into Cursor _curgroup

As result I have 420 records.. but my SQL time nearly 3 seconds.
I have index by ManufactureID and by Group for Rushmore optimization.
I have very fast computer with 1Gb RAM.

Is it normal performace? May I get performance better? Because when i navigate in form from one Manufacture to another.. I have 3 sec delay.. and it looks not good ;(

Thanks
Denis
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