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Variable where clauses
Message
From
10/01/2005 16:34:56
Cetin Basoz
Engineerica Inc.
Izmir, Turkey
 
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Visual FoxPro:
VFP 8 SP1
OS:
Windows XP SP2
Database:
Visual FoxPro
Miscellaneous
Thread ID:
00975797
Message ID:
00975825
Views:
10
>>>Hi everybody,
>>>
>>>I have a cursoradapter class and would like to parameterize the where clause.
>>>
>>>1) Can this be done?
>>>2) How can I do this?
>>>
>>>Thanks in advance.
>>
>>1) Yes.
>>2) Like parametric views. Use ?Var for a parametric variable.
>>
>>Check Thread #944961
>>
>>Cetin
>
>Hi Cetin,
>
>I was just reading this thread. But we have more complicated situation. Basically, I have a search form, and I do not know which fields user is going to fill. I am working with VFP native data, though it doesn't make a difference. So, I need to be able to costruct "where" clause on the fly in the Cursor Adapter. Do you have suggestions how can we accomplish that?
>
>Thanks again.

Not a complex situation, doable since foxpro 1.x.
It doesn't make a difference if that's native or CA or SPT. Prepare your parameters like:

... where nID between ?nMinId and ?nMaxID,;
dDate between ?dMin and ?dMax ....

etc. If parameter known store it to min and max otherwise use possible min and max values.

Cetin
Çetin Basöz

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