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9.7

Views vs tables when parameter list is of varying length

Asked by fuze44 in FoxPro Database

I created a search form that can take several different parameters (ie. name, SS#, phone, etc).  The user can choose one or several criteria.  Rather than adding all of the tables involved to the form's DE, I created a view and just added it with NoDataOnLoad as .T.  I then made the beginner's mistake of having the search button build a string composed of the search criteria, setting it as the filter, and REQUERYing the view.  It's slow!

Now, I want to do this right, but I suspect that since the number of conditions in the view's WHERE will vary, using fixed parameters in the view definition won't work.  In other words, if the user isn't searching for a name, how could I deal with "name = lcName" being in the view?

It seems that I'm left with two options: either do this with tables, or us a view and define the parameter list using DBSetProp during run time before REQUERY().  Is that a correct conclusion?  Is this a case where a view would be more trouble to use than tables?

Thank you.
[+][-]06/26/09 09:22 PM, ID: 24726315Accepted Solution

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Zone: FoxPro Database
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Solution Provided By: CaptainCyril
Participating Experts: 3
Solution Grade: A
 
[+][-]06/26/09 05:18 PM, ID: 24725717Expert Comment

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[+][-]06/26/09 05:26 PM, ID: 24725734Author Comment

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[+][-]06/26/09 06:07 PM, ID: 24725832Expert Comment

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[+][-]06/27/09 10:00 AM, ID: 24728469Assisted Solution

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