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SQL select slow on tables shared with VFP8
Message
From
12/01/2005 17:57:23
 
General information
Forum:
Visual FoxPro
Category:
Other
Environment versions
Visual FoxPro:
VFP 9
OS:
Windows XP SP1
Network:
Windows 2000 Server
Database:
Visual FoxPro
Miscellaneous
Thread ID:
00972500
Message ID:
00976607
Views:
11
Will the driver be updated?


>Geoff,
>
>If you want add index for DELETED() check new BINARY clause in INDEX command. Keep in mind that using this clause will make your table incompatible with previous VFP versions and VFP ODBC driver.
INDEX ON DELETED() TAG deleted BINARY
>
>>
>>From my testing it appears that the Deleted() index is needed in order to get full optimization. Setting DELETED ON or OFF does change whether optimization is Full or Partial and probably affects performance.
>>
>>There appears to be some other slight changes in the way optimization is performed with regard to composite (complex) indicies but I have rectified these by changing the index.
>>
>>There also appears to be a slight degredation with macro substitution but I suspect that this is more to do with caching than anything else.
>>
May all your weeds be wildflowers
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