neilconway commented on code in PR #21208:
URL: https://github.com/apache/datafusion/pull/21208#discussion_r3011686219
##########
datafusion/optimizer/src/decorrelate.rs:
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@@ -461,19 +461,30 @@ fn collect_local_correlated_cols(
}
fn remove_duplicated_filter(filters: Vec<Expr>, in_predicate: &Expr) ->
Vec<Expr> {
+ // We assume below that swapping the order of operands to an operator does
+ // not change behavior, which is true only if the operator is commutative.
+ debug_assert!(
Review Comment:
Thanks, fixed.
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