I have a table in database, with pk as internal no and in normalised form.
Here user will import an excel with the information having internal no, my task is to match the internal no and update the required row with the data.
How ever i can do it, by running set of queries, i want to know if there any more quicker side, where u can compare first the entries and not matching then update, yes it will be the case if blank also there.
any help