[Feature] Introduce version merge engine for primary key table

[wuchong]

[sunxiaojian]

@wuchong Please assign it to me, I want to try this, thanks

[wuchong]

Hi @sunxiaojian , did you start working on this issue? We are particularly in urgent need of this feature. If you have already started developing it, we can assist with reviewing and providing guidance. If you don't have time to work on it shortly, we can take it over for development.

[sunxiaojian]

Hi @sunxiaojian , did you start working on this issue? We are particularly in urgent need of this feature. If you have already started developing it, we can assist with reviewing and providing guidance. If you don't have time to work on it shortly, we can take it over for development.

@wuchong I have started developing this feature and will complete it as soon as possible.