Can someone clarify a point regarding Incremental Deduped History User-Defined Primary key. In our case, we're pulling Google Analytics data with these columns:
Dimensions: Date, Campaign, Source & Medium, Event Category,
Metrics: Total Events, Event Value
How do I select User-Defined Primary key. My guess is that GA won't return duplicated records of the combination of Date, Campaign, Source & Medium, Event Categor, so using all of them as the composite primary key should work. Am I correct in approaching it this way?