tobixdev commented on PR #20312:
URL: https://github.com/apache/datafusion/pull/20312#issuecomment-4089151202
Thank you @paleolimbot ! From my limited experience this looks good!
> Another approach would be to register a CastExtension with both types
(to/from)...happy to experiment.
Maybe this could be interessting with an eye regarding `CREATE CAST`
support. Something akin to:
```rust
fn create_cast_extensions(&self) -> Vec<Box<dyn CastExtension>> {
Vec::new() }
```
And then the planner could consider i) the defaults from the extension types
and ii) any custom registered casting functions.
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