alamb commented on a change in pull request #9703:
URL: https://github.com/apache/arrow/pull/9703#discussion_r593901365
##########
File path: rust/benchmarks/src/bin/tpch.rs
##########
@@ -1636,7 +1636,7 @@ mod tests {
.file_extension(".out");
let df = ctx.read_csv(&format!("{}/answers/q{}.out", path, n),
options)?;
let df = df.select(
- &get_answer_schema(n)
Review comment:
this is a pretty good example -- the `answer_schema` was created and
immediately dropped after calling `df.select()`. Now the exprs don't need to be
copied
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