Kun Liu

I can help to review it in the agg function.

cc @liukun4515 @kmitchener

> Also, how do you deal with the synchronization between the projects? for example, some DF issues are due to the decimal cast code in arrow-rs .. how do we...

@kmitchener if the casting feature is important for you, it's great to add it in the arrow-rs kernel.

> I'll submit a couple PRs to move the decimal kernels to arrow-rs. I have the code moved locally and it's mostly working -- enough that I'm confident I can...

Does the type coercion rule should be before there rules?

support the inlist type coercion in the logical phase https://github.com/apache/arrow-datafusion/issues/3468

Do we need make align the type coercion with arrow? The cast system should not be same with arrow, because the datafusion is the SQL system and has some special...

It's related to https://github.com/apache/arrow-datafusion/issues/3555 and fixed by a special path in the type coercion I think this fix is not grace, we can do it better.

I meet the issues, and all of them will be fixed for this issue - [x] https://github.com/apache/arrow-datafusion/issues/3583 - [x] https://github.com/apache/arrow-datafusion/issues/3565 - [x] https://github.com/apache/arrow-datafusion/issues/3568 - [x] https://github.com/apache/arrow-datafusion/issues/3557 - [x] https://github.com/apache/arrow-datafusion/issues/3556 -...