alamb commented on issue #5309:
URL:
https://github.com/apache/arrow-datafusion/issues/5309#issuecomment-1435083129
> Maybe we can use assert to assume that the "Ambiguous reference error"
should not happen in had_column?
How about returning an enum like
```rust
enum FoundColumn {
Found,
NotFound,
Ambiguous
}
pub fn has_column(&self, column: &Column) -> FoundColumn {...}
```
?
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