andygrove opened a new issue, #21959:
URL: https://github.com/apache/datafusion/issues/21959
### Describe the bug
I wanted to add `base64` support in Comet using the expression from
`datafusion-spark`, but it has no implementation, so I had to implement a
custom version in Comet. This doesn't seem ideal.
```rust
fn invoke_with_args(&self, _args: ScalarFunctionArgs) ->
Result<ColumnarValue> {
exec_err!("invoke should not be called on a simplified {} function",
self.name())
}
```
### To Reproduce
_No response_
### Expected behavior
_No response_
### Additional context
_No response_
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