[Feature][Sort] Support aggregate model for Doris

[Yizhou-Yang]

Description

refer to this link:https://doris.apache.org/docs/dev/data-table/data-model/

doris has 3 models, and aggregate model and duplicate model itself has no unique key.

In aggregate model, it is called aggregate key. Now, I need to support this, since it is essentially the same as unique key.

Use case

No response

Are you willing to submit PR?

• [X] Yes, I am willing to submit a PR!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[github-actions[bot]]

This issue is stale because it has been open for 60 days with no activity.