comphead commented on code in PR #17651:
URL: https://github.com/apache/datafusion/pull/17651#discussion_r2388420201
##########
datafusion/optimizer/src/decorrelate_predicate_subquery.rs:
##########
@@ -371,6 +371,50 @@ fn build_join(
(None, None) => lit(true),
_ => return Ok(None),
};
+
+ if matches!(join_type, JoinType::LeftMark | JoinType::RightMark) {
+ let right_schema = sub_query_alias.schema();
+
+ let mut needed = std::collections::HashSet::new();
Review Comment:
appreciate if you can added comment what is `needed` ?
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