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Change remote view order at runtime
Message
De
16/09/2007 19:38:05
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivie
 
 
À
16/09/2007 18:15:38
Balazs Simon
Unit Informatics Ltd.
Budapest, Hongrie
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP1
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
MS SQL Server
Divers
Thread ID:
01254610
Message ID:
01254615
Vues:
16
>My grid displays the content of a Remote View with 1.000.000+ records from SQL server. I use data fetching to speed up the application. The user can click on the column's headers to change the order of the grid.
>
>If I use indexes to quickly change the order, then the whole table is downloaded. This is very slow. So probably I have to make new query every time the user changes to order. The problem is that the SELECT expression is read-only at runtime in the Remote View. I can't use "?parameters" at ORDER BY as with FILTER in the View Designer. I can't use "CREATE VIEW" to overwrite the existing Remote View because more users are using the same application with the same .DBC.
>
>Any ideas? Thanks in advance!

I think you simply have to make sure you download only a subset of the data - you must decide, based on the structure of the data, whether this should be by client, by date range, etc. Then, once the user gets a small subset of the data, you can create temporary indices on this subset.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
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