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Re:Show HN: Refine v3.97 – Open-source React framework for b... by revskill on Wednesday January 25, 2023 @04:36AM (#34516344)
It's about row grouping, not column grouping.
Re:Show HN: Refine v3.97 – Open-source React framework for b... by omeraplak on Wednesday January 25, 2023 @04:41AM (#34516386)
Perhaps this is what you are looking for? https://tanstack.com/table/v8/docs/examples/react/expanding