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Editorial Team
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Asked: 2026-06-03T21:19:24+00:00

I’m asking myself a question about the way to filter content of a clientdataset

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I’m asking myself a question about the way to filter content of a clientdataset in a 3 tier datasnap architecture : Oracle DB <=> My Datasnap Server <=> My Datasnap clients

I have a Oracle table accessed thru a TDSProviderConnection and a TClientDataset.

Multiple clients are using the dataset, which contains a field named "clientId".
I would like each client to request only his rows (just like WHERE clientId = 'Client1' in a sql statement).

If I understant right, use of filter doesn’t not reduce overhead.

myclientdataset.Filter:= 'ClientId = Client1';
myclientdataset.Filtered:= true;

As this pass all the client anyway. I want the server to filter what’s sent.

But I have no idea how to accomplish this using these components.

Any idea would be greatly appreciated.

Regards,
JP

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1 Answer

  1. Editorial Team

    Sounds like a task for a parametrized query as described in this etutorial. As each client sets its own parameter only the requested data is transferred to each client.

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