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How much of a slow down do indexes cause?
Message
From
12/07/2013 09:39:23
 
General information
Forum:
Visual FoxPro
Category:
Other
Environment versions
Visual FoxPro:
VFP 9 SP2
OS:
Windows Server 2012
Network:
Windows 2008 Server
Database:
MS SQL Server
Application:
Web
Miscellaneous
Thread ID:
01578310
Message ID:
01578311
Views:
75
>Hi everyone,
>
>Hey, I've been coding in VFP now since 94 and I know how I would answer this question but I wanted to ask some other gurus.
>
>For a VFP free table that has over 100,000 records in it with 29 existing indexes, we are considering adding 5 more index tags but have some concerns that this may cause more slow down when new records are added than it does now. Our application is running on a beefy machine but has 50+ users hitting it.
>
>Would 5 more indexes probably cause any noticeable difference?
>Thanks for your input!


It's a tradeoff. Yes it will cause slowdown. But that slowdown at add time must be compared against the speedups at query time to determine if it's an asset.

29 indexes on a free table ... percentage-wise I can't imagine it making it that much slower. LOL! :-)
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