donghekang opened a new issue, #13967:
URL: https://github.com/apache/arrow/issues/13967
I would like to use the SetRel operator to union two datasets. I got the
error: `NotImplemented: conversion to arrow::compute::Declaration from
Substrait relation set{...}`. According to the `relation_internal.cc`, it looks
like we have not implemented this operator. Is there any way to address this
problem or any plan to implement the operator in the future?
The Substrait plan is as the following:
[myplan.txt](https://github.com/apache/arrow/files/9418427/myplan.txt)
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