“Speak in a moment of anger and you’ll deliver the greatest speech you’ll ever regret.”
When you have a Distribution Key by Hash and the values in that column are unique, the data will spread perfectly evenly in your Azure SQL Data Warehouse system. This is because the data values in the Hash Key use a hashing formula. The formula is designed to be consistent and spread the data evenly.
When you have a Distribution Key by Hash and the values in that column are non-unique the data ...