mesejo opened a new issue, #447:
URL: https://github.com/apache/arrow-datafusion-python/issues/447

   **Is your feature request related to a problem or challenge? Please describe 
what you are trying to do.**
   I would like to add to use the 
[case](https://docs.rs/datafusion/latest/datafusion/logical_expr/fn.case.html) 
conditional function from Python.
   
   **Describe the solution you'd like**
   Ideally, I would like it to be possible to do something like the following:
   
   ```python
   df = df.select(
           f.case(column("a"))
           .when(literal("Hello"), literal("Hola"))
           .when(literal("World"), literal("Mundo"))
           .otherwise(literal("!!")),
       )
   ```
   
   **Describe alternatives you've considered**
   None
   
   **Additional context**
   This was suggested as a possible solution by @alamb in  
[arrow-datafusion#7062](https://github.com/apache/arrow-datafusion/discussions/7062)
 discussion
   


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