jayzhan211 commented on PR #14812:
URL: https://github.com/apache/datafusion/pull/14812#issuecomment-2678065061
@zjregee How about wrapping with Expr::Cast?
The logic should be something similar to this
```rust
let data_type_a = complex_expr.get_data_type();
let data_type_b = complex_expr.get_data_type();
if data_type_a != data_type_a {
target type = determine_common_type()
Expr::Cast(complex_expr, target type)
}
```
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