[C++] Decimal64/32 support?

[mjshare]

Describe the enhancement requested

Currently, the Arrow supports only decimal 128. When the Arrow is connected to an engine such as duckdb, the conversion is copied. Is there any plan to support 64/32?

Component(s)

C++

[kou]

Could you start a discussion on dev@arrow.apache.org with a concrete example/use-case?
See also:

• General mailing list information: https://arrow.apache.org/community/#mailing-lists
• dev@arrow.apache.org archive: https://lists.apache.org/list.html?dev@arrow.apache.org

[kou]

The discussion thread on dev@arrow.apache.org: https://lists.apache.org/thread/87h5l9n81qtw9qd04s3pw7vbxxqkhnck

[thisisnic]

This has now been implemented in #43957