dwilliscp (2/11/2013)
I changed to PK, thanks. I will have to look back and see if he stated anything about using PK... I would not think that e-mail would be a PK, since folks tend to have more than one.
I will agree with that - but he does state that he has decided to match the first one he finds and update just that one row. In a way, that makes the e-mail column in the example effectively a PK.
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