What is the best practice for when you need to add a new unique column to an existing database?
Simply adding the column with the @Unique annotation will result in "Attempt to reuse an existing value (null)", so the only option I can surmise is to add the column, update all existing entries, THEN add the @Unique constraint. I'm hoping there's a better way, like providing a means to generate values when the existing record is null.
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