Sorry guys if its too basic of a question. any hint would be helpful.
g
Gian Merlino
03/10/2023, 2:15 AM
groupBy is always exact unless you do
forceLimitPushDown
Gian Merlino
03/10/2023, 2:15 AM
topN does the approximation you describe, which generally works well for "top heavy" distributions and generally does not work well for uniform distributed data