houqp edited a comment on issue #1372:
URL: 
https://github.com/apache/arrow-datafusion/issues/1372#issuecomment-984327500


   Doing a projection "push up" could be a quick workaround to enable this in 
datafusion. For example, in logical plan builder's `sort` method, we can detect 
whether any of the sort columns are missing in the input plan's schema, if it 
is, we rewrite downstream projection plans by adding the missing sort columns, 
then add a new projection plan after the sort plan to remove the injected sort 
columns.


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