[Feature] 现在或以后会支持分组列汇总吗

[fanjun123]

What problem does this feature solve?

分组列汇总

What does the proposed API look like?

分组也有每列的 aggregation 配置，默认和列汇总一样

[fangsmile]

目前没有这个计划！感谢你的反馈！
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