Though btw., I think I personally prefer the SPyQL benchmarks[0], as they test a bigger variety of scenarios. This benchmark is mostly testing CSV decoding speed - because the group by is very simple, with just a few keys in the grouping.
Actually I have a big issue with that benchmark in that it doesn't ORDER BY. I don't believe all those tools will produce the same result and it's not required by SQL for them to do so.
That doesn't change the poor performance of dsq but it does change the relative and absolute scores in that benchmark.
