ygf11 commented on code in PR #4760:
URL: https://github.com/apache/arrow-datafusion/pull/4760#discussion_r1058870767
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datafusion/optimizer/src/extract_equijoin_predicate.rs:
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@@ -387,4 +357,33 @@ mod tests {
assert_plan_eq(&plan, expected)
}
+
+ #[test]
+ fn join_with_alias_filter() -> Result<()> {
+ let t1 = test_table_scan_with_name("t1")?;
+ let t2 = test_table_scan_with_name("t2")?;
+
+ let t1_schema = t1.schema().clone();
+ let t2_schema = t2.schema().clone();
+
+ // filter: t1.a + CAST(Int64(1), UInt32) = t2.a + CAST(Int64(2),
UInt32) as t1.a + 1 = t2.a + 2
+ let filter = Expr::eq(
+ col("t1.a") + lit(1i64).cast_to(&DataType::UInt32, &t1_schema)?,
+ col("t2.a") + lit(2i32).cast_to(&DataType::UInt32, &t2_schema)?,
+ )
+ .alias("t1.a + 1 = t2.a + 2");
+ let plan = LogicalPlanBuilder::from(t1)
Review Comment:
The `split_conjunction` will unalias the expr.
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