Dandandan commented on issue #790:
URL:
https://github.com/apache/arrow-datafusion/issues/790#issuecomment-894016110
Some good news, this is quite like mostly an improvement on the (more
challenging) db-benchmark aggregates.
Master:
```
q1 took 37 ms
q2 took 325 ms
q3 took 1431 ms
q4 took 56 ms
q5 took 1287 ms
q7 took 1304 ms
q10 took 9380 ms
```
PR:
```
q1 took 36 ms
q2 took 360 ms
q3 took 1002 ms
q4 took 67 ms
q5 took 984 ms
q7 took 924 ms
q10 took 4024 ms
```
Performance of q10 is improved > 2x!
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