ozankabak commented on code in PR #8006:
URL: https://github.com/apache/arrow-datafusion/pull/8006#discussion_r1380501861
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datafusion/physical-plan/src/common.rs:
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@@ -373,6 +375,38 @@ pub fn batch_byte_size(batch: &RecordBatch) -> usize {
batch.get_array_memory_size()
}
+/// Constructs the mapping between a projection's input and output
+pub fn calculate_projection_mapping(
Review Comment:
For now `ProjectionMapping` is just a type alias, but we plan to promote it
to a full-fledged type in a follow on PR -- I agree that it makes sense to
convert this into a method then.
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