[GitHub] [arrow-datafusion] alamb opened a new issue, #6781: Blog post about user defined window functions

["alamb (via GitHub)" <gi...@apache.org>]

alamb opened a new issue, #6781:
URL: https://github.com/apache/arrow-datafusion/issues/6781

   ### Is your feature request related to a problem or challenge?
   
   We recently did a bunch of work to support user defined window aggregates: #5781 
   
   It would be great to write a blog post to highlight this support as I don't think it is as common.
   
   ### Describe the solution you'd like
   
   The basic outline would be:
   1. introduce window functions in SQL
   2. Introduce siding windows
   3. Explain why computing them is hard
   4. Show how to do it in DataFusion, and show how fast it can be
   
   
   
   ### Describe alternatives you've considered
   
   _No response_
   
   ### Additional context
   
   _No response_


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