How to insert unique records in database table?

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SQL-Server-2005

Hi,
I created a webservice that is fetching data from Ms-Access and saved data into sql server 2005.
Now Problem is how to fetch those records which are either updated or new inserting

Thanx
Seema

Posted 9-Mar-10 17:47pm

Seema Gosain

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Mehul M Thakkar · Answer 1 · 2010-03-10T02:13:00

I think there should be pk values with your data while fetching from Ms Access via webservice.

The way I did(for similar scenario) is like here:

1. First collect all the pk values from data (comes via webservice) and Execute the "Delete query" to delete existing data with matching pks.

2. Insert all the data which comes via webservice as there will not be any duplicate data in that now.