hiltontj opened a new issue, #9738:
URL: https://github.com/apache/arrow-datafusion/issues/9738
### Is your feature request related to a problem or challenge?
Currently, when replacing `ParamValue`s during logical planning, if there
are missing parameters in what was provided, a `DatafusionError::Internal` will
be returned.
For example, in our service, we are passing query parameters via an HTTP
request along with a query string. Consider this query:
```
SELECT * FROM foo WHERE bar = $bar
```
We would expect that the user passes something like:
```json
{
"params": {
"bar": "baz"
}
}
```
in the request, along with the query string. But, if they do not, then we
would like to return a `4xx` error code, instead of a `5xx`.
### Describe the solution you'd like
It would be nice if a specific variant was returned, e.g.,
`DatafusionError::MissingParameters`, as this would allow us to handle this
error differently than other `Internal` errors.
### Describe alternatives you've considered
We could parse the `Internal` error message, but that is not very convenient.
### Additional context
n/a
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