What stops you from adding an extra column for PK (int IDENTITY or uniqueidentifier with newid() as default)?


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>I've created a data import package to process some csv files and load the data into a database.
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>I'm creating a temporary table and then loading the contents of the csv file into that.
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>How can I include a unique identifier or key in the table I am creating.
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>This is so I can update the temp table with the result of my import and then report out the failures.
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>Thanks
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>Nick