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Cursor fields being truncated at runtime
Message
De
19/01/1999 20:14:32
Mark Hall
Independent Developer & Voip Specialist
Keston, Kent, Royaume Uni
 
 
À
19/01/1999 16:16:53
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00177621
Message ID:
00177846
Vues:
37
>>
>>Also, rather that using AFIELDS, you could
>>SELECT * FROM tablename INTO CURSOR cursorname NOFILTER
>>to get a copy of your original table for reporting.
>
>You raise an interesting point here Mark. That sure is a way to create a cursor based on an existing structure. The cursor will contain every record in the original dataset. I often want an empty cursor.
>You could go
>SELECT * FROM tablename WHERE .F. INTO CURSOR cursorname NOFILTER
>however this is not Rushmore optimizable (try it on a huge dataset!)
>So....
>Does anyone know a fast one liner for creating an empty cursor based on an existing structure?

Hi David,

For an empty cursor, I think AFIELDS() etc. would definetly be the way to go.

As for something optimizable.... well, it would have to be a WHERE clause based on an index,

WHERE DELETED() = .f. AND DELETED = .t.

maybe.
Regards
Mark

Microsoft VFP MCP
Menulib - OO Menus for VFP www.hidb.com/menulib
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