MohamedAbdeen21 commented on code in PR #10868:
URL: https://github.com/apache/datafusion/pull/10868#discussion_r1638081964


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datafusion/optimizer/src/common_subexpr_eliminate.rs:
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@@ -166,6 +166,15 @@ impl CommonSubexprEliminate {
     ) -> Result<(Vec<Vec<Expr>>, LogicalPlan)> {
         let mut common_exprs = IndexMap::new();
 
+        input.schema().iter().for_each(|(qualifier, field)| {

Review Comment:
   Because we try to fill the gaps in the indexes. Check the new 
`get_next_alias` method.
   
   Passing them inside the common_expr to avoid adding extra arguments.



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