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10/08/2001 03:11:31
Walter Meester
HoogkarspelPays-Bas
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Divers
Thread ID:
00540559
Message ID:
00542147
Vues:
26
Hi Chris and all,

I'm stumped that no-one came up with the following solution though I thought it was commonly known that the following works perfectly.
SELECT *;
   FROM gen_data!customers;
   WHERE &?cWhere ;
   ORDER BY Customers.cu_company
You can define you selection criteria in cWhere (for example "Customers.cu_primary BETWEEN ?vp_LowPk AND ?vp_HighPk AND DELETED() <> .T.". Of course the cWhere variable must be available when this view is loaded (Or NodataOnload must be set to .t.) and requeried.

Of course you could, like Larry says, put the whole command into a string, but then you don't have an updatable view anymore.

Walter,


>Hi - just checking I am barking up the right tree!
>
>I want a view that pulls out records from a base table. The user selects all customers so I have a view with this SQL...
>
>SELECT *;
> FROM gen_data!customers;
> WHERE Customers.cu_primary BETWEEN ?vp_LowPk AND ?vp_HighPk;
> AND DELETED() <> .T.;
> ORDER BY Customers.cu_company
>
>That's fine. But can't I use the following SQL and supply a value for vp_Field and vp_Criteria so that it widens the possibilities?
>
>SELECT *;
> FROM gen_data!customers;
> WHERE Customers.cu_primary BETWEEN ?vp_LowPk AND ?vp_HighPk;
> AND ?vp_Field = ?vp_Criteria;
> AND DELETED() <> .T.;
> ORDER BY Customers.cu_company
>
>I am passing vp_Field = "customers.cu_code" and vp_Criteria as "EMD" (a company code)
>
>This doesn't seem to work and the problem seems to lie with assigning a field.
>
>Am I missing something? Any ideas?
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