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Support 2-stage hash group-by #294

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BohuTANG opened this issue Apr 12, 2021 · 0 comments

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A-query C-feature prio: high

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BohuTANG commented Apr 12, 2021 •

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Summary

To support hash group by, impl in 2 stages,:

Partial hash group by
- create groups
- aggregate the values based on groups
- accumulate the aggregate result to partial state
Final hash group by
- accumulate the partial state to final state

BohuTANG added C-feature prio: high A-query labels

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BohuTANG changed the title ~~Support 2-stages hash group-by~~ Support 2-stage hash group-by

BohuTANG mentioned this issue

Group By transform #296

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BohuTANG closed this as completed

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