mustafasrepo opened a new issue, #8026:
URL: https://github.com/apache/arrow-datafusion/issues/8026

   ### Is your feature request related to a problem or challenge?
   
   Currently `LexOrdering` is a type alias for `Vec<PhysicalSortExpr>`. 
Similarly, `LexRequirement` is a type alias for `Vec<PhysicalSortRequirement>`.
   I think in the long run, it is better to have something like below struct
   ```rust
   struct LexOrdering{
     inner: Vec<PhysicalSortExpr>
   }
   ```
   With this in the future we can extend the type without changing all the 
types. 
   Similar thing can be done for `LexRequirement` also.
   
   
   ### Describe the solution you'd like
   
   _No response_
   
   ### Describe alternatives you've considered
   
   _No response_
   
   ### Additional context
   
   _No response_


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