rmm::device_buffer concatenate_masks(host_span< column_view const > views, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Concatenates views[i]'s bitmask from the bits [views[i].offset(), views[i].offset() + views[i]....
std::unique_ptr< column > concatenate(host_span< column_view const > columns_to_concat, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Concatenates multiple columns into a single column.