viirya commented on code in PR #10304:
URL: https://github.com/apache/datafusion/pull/10304#discussion_r1592969741
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datafusion/physical-plan/src/joins/sort_merge_join.rs:
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@@ -991,6 +992,9 @@ impl SMJStream {
Ordering::Equal => {
if matches!(self.join_type, JoinType::LeftSemi) {
join_streamed = !self.streamed_joined;
+ // if the join filter specified there can be references to
buffered columns
+ // so its needed to join them
+ join_buffered = self.filter.is_some();
Review Comment:
Oh, I see. As the filter uses buffered columns, we need to access to it.
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