adriangb commented on code in PR #18719:
URL: https://github.com/apache/datafusion/pull/18719#discussion_r2535618182
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datafusion/physical-expr/src/projection.rs:
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@@ -396,6 +406,35 @@ impl ProjectionExprs {
))
}
+ /// Project a RecordBatch.
+ ///
+ /// This function accepts a pre-computed output schema instead of calling
[`ProjectionExprs::project_schema`]
+ /// so that repeated calls do not have schema projection overhead.
+ pub fn project_batch(
Review Comment:
The point is that users don't have to track `output_schema` and pass it in,
they can just keep track of a `Projector`
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