Use of distinct in main query

Hi All,
I am creating a report based on two tables Invoice Header and Invoice Line. These two table have the following fields in relation :
Invoice_Dept|| Invoice_Pfx||Invoice_No
My question is whether I can use distinct in the main query for this. Coz, when I don't I get repeated records as one Invoice header can have multiple line items in the Invoice Line tables.
Please suggest.
Thanks

Hi Omer Farooq,
Firstly you can use Distinct in main query.
Secondly I feel you need to use Groups in the data model rather then using distinct.
If you will create groups then your first that is top group will contain fields related to Invoice Header
and second group will contain Invoice Line fields.
Hope this helps.
If this does not help please post your query and what output you want on the report.
Best Regards
Arif Khadas

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Edited by: anbarasan on Sep 29, 2008 6:49 AM
Edited by: anbarasan on Sep 29, 2008 6:51 AM
Edited by: anbarasan on Sep 29, 2008 6:53 AM
Edited by: anbarasan on Sep 29, 2008 6:56 AM
Edited by: anbarasan on Sep 29, 2008 6:58 AM

Hi,
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Regards,
DB

Now i want to make sure that the Local index is being used when i perform select query on the Table partition.Why? Have you proven that using this local index is the "best" plan?
How do i confirm that ?
can i check the explain plan generted for the select query to confirm local index is being used ?When I asked Google "how to read an oracle explain plan," I found lots of information - what did you find?

Use of distinct in main query

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