yujie.zhang (he/him)

@dojiong Discussion of support for extension type can be found at https://github.com/apache/arrow-rs/issues/4472

Current PR has some unresolved issues requiring collaboration for discussion. Once there is a consensus on all the issues among the team, I will reorganize the PR accordingly.

I've organized the logic for the mutual conversion between `DFSchema` and `Schema` in datafusion. In theory, there should be no conversion logic from `Schema` to `DFSchema`. I've outlined all the...

Please accept my apologies for the delay. Due to personal circumstances, I have been unable to attend to any work. I will now proceed to resume work on this PR.