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Just had a thought...if I am adding a unique index to a column...am I going to run into problems if the data in that column is identical....for example...I could have multiple entries where the value is "Happy"....I don't care about it being unique in that column, I care about the uniqueness of a new record between the two columns when looked at together. Not sure if I am explaining that correctly...makes sense in my head but then again, I am running on 3 hours of sleep.
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