alamb commented on code in PR #12583:
URL: https://github.com/apache/datafusion/pull/12583#discussion_r1771810535


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datafusion/physical-expr-common/src/sort_expr.rs:
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@@ -264,9 +267,55 @@ pub type LexOrdering = Vec<PhysicalSortExpr>;
 /// a reference to a lexicographical ordering.
 pub type LexOrderingRef<'a> = &'a [PhysicalSortExpr];

Review Comment:
   BTW having a real struct will make printing these structures much easier -- 
e.g. I had to do some akward workarounds to implement `Display` or 
`LexOrdering` in https://github.com/apache/datafusion/pull/12590



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