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How do you know if a SQL select didn't select anything?
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Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
How do you know if a SQL select didn't select anything?
Divers
Thread ID:
00236234
Message ID:
00236234
Vues:
51
I have the following SQL select in a custom method (thisform.RefreshArray) on a form.

SELECT CatName ;
from CatDisplay ;
where CatUsed = .T. ;
into array laSelCats

This array already exists (scoped as public), is replaced by the above, and then passed by reference from another method as a parameter to a custom method in class.

ie. a click event for a button would be:
thisform.RefreshArray
thisform.Myclass.Redisplay(@laSelCats)

My problem is occasionally the select will not select anything, which is ok, however, since the array already exists it will contian the previous incorrect values.

I tried adding a release laSelCats before the select but that screws up the reference.

Anybody have any ideas about how to get around this?

Thanks in advance.
Roi
'MCP' Visual FoxPro

In Rome, there was a poem.
About a dog, who found two bone.
He lick the one, he lick the other.
He went pyscho, he drop dead!
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