alamb commented on issue #7176:
URL: https://github.com/apache/arrow-rs/issues/7176#issuecomment-2676804271
@tustvold do you have any opinion on adding the ability to cast from one
struct type to another and filling the target struct type with nulls for
missing fields
For example supporting casting from `Struct(a: int)` to `Struct(a: int, b:
int)` would cast a row like
```json
{
"a": 1
}
```
to
```json
{
"a": 1,
"b": null // <-- missing field filled in with null
}
```
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