eliaperantoni opened a new issue, #14431:
URL: https://github.com/apache/datafusion/issues/14431
### Is your feature request related to a problem or challenge?
For a query like:
```sql
SELECT sum('a')'
```
The only message that the end user of an application built atop of
DataFusion is:
```
Error during planning: Execution error: User-defined coercion failed with
Execution("Sum not supported for Utf8") No function matches the given name and
argument types 'sum(Utf8)'. You might need to add explicit type casts.
Candidate functions:
sum(UserDefined)
```
We want to provide a richer message that _references and highlights
locations in the original SQL query_, and contextualises and helps the user
understand the error. In the end, it would be possible to display errors in a
fashion akin to:
See #14429 for more information.
### Describe the solution you'd like
Attach a well crafted `Diagnostic` to the `DataFusionError`, building on top
of the foundations laid in #13664. See #14429 for more information.
### Describe alternatives you've considered
_No response_
### Additional context
_No response_
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