alamb commented on code in PR #4192:
URL: https://github.com/apache/arrow-datafusion/pull/4192#discussion_r1022671635
##########
datafusion/optimizer/tests/integration-test.rs:
##########
@@ -258,6 +258,15 @@ fn timestamp_nano_ts_utc_predicates() {
assert_eq!(expected, format!("{:?}", plan));
}
+#[test]
+fn propagate_empty_relation() {
+ let sql = "SELECT col_int32 FROM test JOIN ( SELECT col_int32 FROM test
WHERE false ) AS ta1 ON test.col_int32 = ta1.col_int32;";
+ let plan = test_sql(sql).unwrap();
+ // when children exist EmptyRelation, it will bottom-up propagate.
Review Comment:
👍
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