Comment by RHSeeger
> Are there real-life cases where DISTINCT is the best choice by whatever metric you prioritize at the time
Indeed, along that line, I would say that DISTINCT can be used to convey intent... and doing that in code is important.
- I want to know the zipcodes we have customers in - DISTINCT
- I want to know how many customers we have in each zipcode - aggregates
Can you do the first with the second? Sure.. but the first makes it clear what your goal is.
Partly in jest, but maybe we need a NON-DISTINCT signaller to convey the inverse and return duplicate values only.
SOMEWHAT-DISTINCT with a fuzzy threshold would also be useful.