thisisnic commented on code in PR #39542:
URL: https://github.com/apache/arrow/pull/39542#discussion_r1446781427
##########
r/src/compute-exec.cpp:
##########
@@ -302,6 +301,8 @@ std::shared_ptr<acero::ExecNode> ExecNode_Scan(
"make_struct", std::move(exprs),
compute::MakeStructOptions{cpp11::as_cpp<std::vector<std::string>>(field_names)});
+ options->dataset_schema =
GetProjectedSchemaFromExpression(options->projection, dataset->schema());
Review Comment:
I don't think we can actually do this this way as this function is internal,
but I think that we need to do something like what this does.
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