comphead opened a new issue, #15817:
URL: https://github.com/apache/datafusion/issues/15817
### Is your feature request related to a problem or challenge?
In the test below the suggestion should not be shown
```
> select array_repeat(1, null);
Error during planning: Execution error: Function 'array_repeat' user-defined
coercion failed with "Execution error: count must be an integer type" No
function matches the given name and argument types 'array_repeat(Int64, Null)'.
You might need to add explicit type casts.
Candidate functions:
array_repeat(UserDefined)
```
The error and comment are self explanatory, and having
```
Candidate functions:
array_repeat(UserDefined)
``` is confusing
### Describe the solution you'd like
Its probably not easy to do, but we need to introduce some error type that
defines the function was found but the signature is not correct, in this case
we should list a function with a correct signature as a suggestion
### Describe alternatives you've considered
_No response_
### Additional context
_No response_
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