HuSen8891 commented on code in PR #12467:
URL: https://github.com/apache/datafusion/pull/12467#discussion_r1766014142
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datafusion/common/src/dfschema.rs:
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@@ -412,17 +412,32 @@ impl DFSchema {
}
}
+ /// Check whether the column reference is ambiguous
+ pub fn check_ambiguous_name(
Review Comment:
These two functions will check the ambiguous column reference, it's
necessary, or we could not identify the case below:
create table t1(v1 int);
select count(*)
from t1
right outer join t1
on t1.v1 > 0;
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