bkietz commented on a change in pull request #10705:
URL: https://github.com/apache/arrow/pull/10705#discussion_r668227228
##########
File path: cpp/src/arrow/compute/exec/exec_plan.h
##########
@@ -265,9 +271,15 @@ Result<ExecNode*> MakeFilterNode(ExecNode* input,
std::string label, Expression
/// this node to produce a corresponding output column.
///
/// If exprs are not already bound, they will be bound against the input's
schema.
+/// If names are not provided, the string representations of exprs will be
used.
ARROW_EXPORT
Result<ExecNode*> MakeProjectNode(ExecNode* input, std::string label,
- std::vector<Expression> exprs);
+ std::vector<Expression> exprs,
+ std::vector<std::string> names = {});
+
+ARROW_EXPORT
+Result<ExecNode*> MakeScalarAggregateNode(ExecNode* input, std::string label,
+ std::vector<internal::Aggregate>
aggregates);
Review comment:
At some point it may be promoted to public or replaced, but that's out
of scope for this PR
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