Company or project name

ClickHouse

Use case

Build-side rows are stored via RowRef/RowRefList that hold pointers to build side columns. During probe, retrieving a matched row's projected columns requires touching each build side column separately. With many projected columns this might cause some overhead.

Describe the solution you'd like

Experiment with storing build-side rows inline in the hash table in row-major format, packing all projected column values into a single contiguous buffer per row. Evaluate if this could improve hash table probe performance.

Describe alternatives you've considered

No response

Additional context

No response