jayzhan211 commented on PR #14289:
URL: https://github.com/apache/datafusion/pull/14289#issuecomment-2613940212
Maybe we need yet another trait implementation
```rust
trait ScalarUDFImpl {
fn handle_nulls(&self, args: ScalarFunctionArgs) ->
Result<Option<ColumnarValue>> {
// most of the case if any null exist, we return null
}
}
for coalesce:
fn handle_nulls(&self, args: ScalarFunctionArgs) ->
Result<Option<ColumnarValue>> {
// handle it inside the funciton
None
}
```
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