To avoid repetition of data

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How to avoid repetition of data while uploading data from excel sheet to database?
If it is already present means it shoul replace it otherwise if it is not there means it should upload it.

Posted 6-Jun-12 20:12pm

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Rahul Rajat Singh · Answer 1 · 2012-06-06T20:21:00

Solution 1

Here is a little algorithm for that

1. read next row from excel.
2. check if the data exist in the table already(using some unique column)
a. if yes update that row using some conditions
b. if no then insert this as new row
3. go to 1.

Posted 6-Jun-12 20:21pm

Rahul Rajat Singh