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Building a complex query
Message
From
26/01/2005 10:19:05
 
General information
Forum:
Visual FoxPro
Category:
Other
Environment versions
Visual FoxPro:
VFP 6
OS:
Windows 2000 SP4
Network:
Windows 2000 Pro
Database:
Visual FoxPro
Miscellaneous
Thread ID:
00980679
Message ID:
00980767
Views:
62
>Hi
>
>I am trying to work out the code for the following
>
>I have 12 query fields - any or all may contain values - I only want SQL to run the query on those fields where the query field is non blank
>
>eg Town = New York Country = USA zipcode (blank)
>
>The query would only work on town and country since the zipcode field is blank
>
>Alternatively I might have to run a number of queries one after using the results from query 1 as the source data for query 2 - is there any way I can do this?
>

SELECT * from Address ;
WHERE IIF(empty(?vp_city), .T., address.city = ?vp_city) ;
AND IIF(empty(?vp_state), .T., address.state = ?vp_state) ;
AND IIF(empty(?vp_country), .T., address.country = ?vp_country) ;
AND IIF(empty(?vp_zipcode), .T., address.zipcode = ?vp_zipcode)
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