I'm trying to figure out the best way to handle an import. I have a single flat file that contains both new records and updates to current records in a single table. I am matching on a GUID. I was wondering if there is a best practice for this. I've scowered google and msdn for a recommended solution (I can think of many, but most of them involve looping) and not found anything but I may just not be searching for the right thing. Does anyone have any advice or can you give me a nudge in the right direction?
Thanks in advance.