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Exact and deleted recs - did everybody know this but me?
Message
From
24/07/2006 15:07:01
Mike Yearwood
Toronto, Ontario, Canada
 
 
To
24/07/2006 15:05:01
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Miscellaneous
Thread ID:
01139176
Message ID:
01139395
Views:
12
>>>>>If I were writing this thing from scratch, I'd do as you suggest, but unfortunately, with only God knows how many lines of code existing in this app, I don't have that luxury. Do you think it's safe to count on tricking VFP the way I'm doing it?
>>>>
>>>>No, it's not safe. Your results are not reliable.
>>>
>>>You know... I was afraid you'd say that. ;)
>>>
>>>For the record though, by 'not reliable', do you mean from run to run, or for future reference. So far, it's been completely reliable in my testing, but I don't know what MS might do later to screw it up for me and so far, I'm at a loss to find another way to speed this thing up. The way it is now, it's just waaaayyy too slow. Doing what I did took it down to sub 1 second. Well, I'm going to keep rummaging around for an answer, but in the meantime, I may have to treat this as a temporary fix.
>>>
>>You can not expect the same result in every test on every PC. How many tables do you use in your SELECT? Can you post it again because I jumped into the thread in the middle?
>>
>>Did you add NOFILTER clause at the end? Did it speed up the process? How many records are in the table and how many satisfy the filter criteria?
>
>That's going to be my next try. If it is as fast as what I'm doing now, I'll switch.

It cannot be faster because NOFILTER turns off the exact behavior you've just found to be faster.
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