Thanks. Lirong Jian HashData Inc.
Wes McKinney <wesmck...@gmail.com> 于2020年5月7日周四 下午10:44写道： > Feel free to follow ARROW-5002 > > On Thu, May 7, 2020 at 2:52 AM Lirong Jian <jianlir...@gmail.com> wrote: > > > > Any update of this task? > > > > We are very interested in this feature. Thanks. > > > > Lirong Jian > > HashData Inc. > > > > > > Chendi.Xue (Jira) <j...@apache.org> 于2019年11月14日周四 下午2:02写道： > > > > > Chendi.Xue created ARROW-7165: > > > --------------------------------- > > > > > > Summary: [C++] Arrow Compute Group By Support > > > Key: ARROW-7165 > > > URL: https://issues.apache.org/jira/browse/ARROW-7165 > > > Project: Apache Arrow > > > Issue Type: New Feature > > > Components: C++ - Compute > > > Reporter: Chendi.Xue > > > > > > > > > Not sure if there is any plan to support groupby in arrow? > > > > > > Here is some to do in my mind: > > > # To make current arrow/compute/kernels/hash supporting received a > > > memo_table as input, so multiple array will be able to get dictencode > and > > > valuecount based on same hashmap with a unified index. > > > # To add a split array function instead of using take multiple time to > > > split one array to several ones. > > > # so the output array can use current funcs under compute/kernels, > such > > > as sum/count/sort to support group by. > > > > > > But this is some of my basic idea, wanna know if there is a on going > plan > > > on this? > > > > > > > > > > > > -- > > > This message was sent by Atlassian Jira > > > (v8.3.4#803005) > > > >
