nchammas commented on PR #49839:
URL: https://github.com/apache/spark/pull/49839#issuecomment-2916653294

   I'm just learning about this new feature from the release notes. Do we have 
docs that explain _when_ or _why_ users would want to use table-valued 
functions?
   
   My first reaction, based just off of the name "table-valued function" in the 
context of the DataFrame API, is to wonder why we need such a feature, since 
with Python/Scala/etc. you can just have regular functions that return 
DataFrames. Isn't that the same thing? (I suspect it's probably not, but I ask 
this question to motivate the need for some basic docs explaining the when/why 
of DataFrame TVFs.)


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