Luca

Hi @changhiskhan and @eddyxu , thank you for your reply. For the code, you are right. I had changed the code without saving it. It should have been `.sink_parquet()` instead...

Hi @universalmind303 , When I think about SQL, I always think about CTEs and Window functions (including specifying the window frame with range/rows). Would you know if this is planned?

Thank you @universalmind303 for the CTE! For the window function, I often use the 'frame type' option: row frame or range frame. Below is a description I found for Spark...

not sure how long it would take to implement them, but would it be possible to have the RANK function and the EXTRACT function? Extract will allow for easier working...

What about adding priorities (1,2,3, etc) to the functions ? This can give users an idea if those functions are likely to be added earlier or later

@universalmind303 : that's a good idea. can we add EXTRACT and RANK to the community requested? I see that EXTRACT was also requested by @2-5 above and table aliasing :)...

I read a Stack Overflow question where referencing other columns in `arr.eval` could make for an easier synthax compared to groupby: https://stackoverflow.com/questions/76037097/polars-element-wise-list-operations-using-another-column I imagine this might not give any performance...

sounds good. I think an error message is all that's needed. It took me some time to understand why streaming was not working. But it makes sense that you cannot...

that would make for a very memorable error message :)

adding @universalmind303. what do you think?