was running a TPCH_SF5 just for fun, I notice query 17 and 18 are very slow

full reproducible example

another issue when I increase sf to 10, I start getting OOM errors ?

https://colab.research.google.com/drive/1WJ2ICxJyAYClkDx8guGX-TcOMnf8SBxr#scrollTo=z494Cl6XKUVX

DataFusion 26 gives the following result against duckdb