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I was wondering about the same claim. However, I believe that JOIN's are a common weakness among OLAP database engines, and DataFusion is built on top of a colu

I was wondering about the same claim. However, I believe that JOIN's are a common weakness among OLAP database engines, and DataFusion is built on top of a columnar storage format - Apache Arrow.

sanxiyn 3y ago
By being columnar, I guess you could say DataFusion has a good executor, but no, not a good optimizer.
- menaerus 3y ago
  Not that I was trying to make any of those claims but just trying to correlate the domain with what appears to be a common problem in it.