peter-toth commented on code in PR #10868:
URL: https://github.com/apache/datafusion/pull/10868#discussion_r1635225523
##########
datafusion/optimizer/src/common_subexpr_eliminate.rs:
##########
@@ -515,14 +522,15 @@ fn build_common_expr_project_plan(
let mut fields_set = BTreeSet::new();
let mut project_exprs = common_exprs
.into_iter()
- .map(|(expr_id, expr)| {
+ .enumerate()
+ .map(|(index, (expr_id, expr))| {
Review Comment:
Hmm, I'm not sure I get your comment. This issue is not
`try_optimize_aggregate` related and I don't see why the `as #1` alias gets
added.
But thanks, an example would be great. You can mimic the constant folding
step by manually modifying the plan.
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