liukun4515 commented on code in PR #4327:
URL: https://github.com/apache/arrow-datafusion/pull/4327#discussion_r1029931175
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datafusion/core/src/physical_plan/joins/hash_join.rs:
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@@ -2329,6 +2332,63 @@ mod tests {
Ok(())
}
+ #[tokio::test]
+ async fn join_left_semi_with_filter() -> Result<()> {
+ let session_ctx = SessionContext::new();
+ let task_ctx = session_ctx.task_ctx();
+ let left = build_table(
+ ("a1", &vec![1, 2, 2, 3]),
+ ("b1", &vec![4, 5, 5, 7]), // 7 does not exist on the right
+ ("c1", &vec![7, 8, 8, 9]),
+ );
+ let right = build_table(
+ ("a2", &vec![10, 20, 30, 40]),
+ ("b1", &vec![4, 5, 6, 5]), // 5 is double on the right
+ ("c2", &vec![70, 80, 90, 100]),
+ );
+ let on = vec![(
+ Column::new_with_schema("b1", &left.schema())?,
+ Column::new_with_schema("b1", &right.schema())?,
+ )];
+
+ // build filter right.b2 > 4
Review Comment:
> Ah, the key is this filter. 👍
Yes, we can add `filter` to filter left row or right row, and get the new
result.
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