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Understanding Rushmore optimization
Message
From
16/07/2016 12:42:32
Mike Yearwood
Toronto, Ontario, Canada
 
 
To
12/07/2016 09:32:34
General information
Forum:
Visual FoxPro
Category:
Other
Miscellaneous
Thread ID:
01638260
Message ID:
01638460
Views:
133
>If you need an index on a logical field or on deleted(), make sure to add the Binary keyword when you create it. That will make the index much smaller, meaning much faster.

Not faster than not having the index at all, especially when other filters have already identified the records.

>
>>The more it makes sense for me to get rid of it. Thank you.
>>
>>>Any index on a binary value will generally not be very effective. I've heard some people say that an index on DELETED() is effective if you have a high number of deleted records, but never tested this myself.
>>>
>>>
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