Disallow groupby aggs for `StructColumns`#8499

Merged

rapids-bot[bot] merged 2 commits intobranch-21.08from charlesbluca-patch-1

Jun 14, 2021

+22-1

Commits on Jun 11, 2021

Use _STRUCT_AGGS for struct dtype
charlesbluca
authored

Commits on Jun 14, 2021

Assert that list agg not supported for structs
charlesbluca
committed