adriangb commented on PR #20497:
URL: https://github.com/apache/datafusion/pull/20497#issuecomment-4061361812

   > This should make the incremental benefit of using a predicate on this 
column early in Late Materialization likely marginal in many workloads, given 
most of the pruning value was already captured earlier.
   
   So the point is that these columns (sorted columns) were likely well pruned 
by row group / page min/max stats -> they're unlikely to be selective for row 
pruning -> they should be evaluated last?


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