Asura7969 commented on issue #8374:
URL:
https://github.com/apache/arrow-datafusion/issues/8374#issuecomment-1842402521
My initial solution：
```rust
.find_map(|(index, (projected_expr, alias))| {
projected_expr.as_any().downcast_ref::<Column>().and_then(
|projected_column| {
(column.index() == projected_column.index() <--- and index
comparison
&& column.name().eq(projected_column.name()))
.then(|| {
state = RewriteState::RewrittenValid;
Arc::new(Column::new(alias, index)) as _
})
},
)
})
```
> and index comparison
```text
DataFusion CLI v33.0.0
❯ CREATE TABLE users AS VALUES('Alice',50),('Bob',100);
0 rows in set. Query took 0.022 seconds.
❯ CREATE TABLE employees AS VALUES('Alice','Finance'),('Bob','Marketing');
0 rows in set. Query took 0.008 seconds.
❯ SELECT u.* FROM users u JOIN employees e ON u."column1" = e."column1"
ORDER BY u."column1", e."column2";
+---------+---------+
| column1 | column2 |
+---------+---------+
| Alice | 50 |
| Bob | 100 |
+---------+---------+
```
The result is correct
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