goldmedal commented on code in PR #13240:
URL: https://github.com/apache/datafusion/pull/13240#discussion_r1831110002
##########
datafusion/sqllogictest/test_files/scalar.slt:
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@@ -1940,7 +1940,7 @@ select position('' in '')
----
1
-query error DataFusion error: Error during planning: Error during planning:
Int64 and Int64 are not coercible to a common string
+query error DataFusion error: Error during planning: Error during planning:
The signature expected NativeType::String but received Int64
Review Comment:
I think the error message could be confusing 🤔 . I'm not sure. If providing
both of them are `NativeType`, maybe better?
```suggestion
query error DataFusion error: Error during planning: Error during planning:
The signature expected NativeType::String but received NativeType::Int64
```
or
```suggestion
query error DataFusion error: Error during planning: Error during planning:
The signature expected NativeType::String but received ArrowType Int64
```
?
##########
datafusion/expr-common/src/signature.rs:
##########
@@ -109,7 +110,7 @@ pub enum TypeSignature {
/// For example, `Coercible(vec![DataType::Float64])` accepts
/// arguments like `vec![DataType::Int32]` or `vec![DataType::Float32]`
/// since i32 and f32 can be casted to f64
Review Comment:
I think we need to update the doc for the logic type.
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