drusso commented on a change in pull request #9364:
URL: https://github.com/apache/arrow/pull/9364#discussion_r567507800
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File path: rust/datafusion/src/sql/utils.rs
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@@ -335,3 +336,35 @@ where
},
}
}
+
+/// Returns mapping of each alias (`String`) to the expression (`Expr`) it is
+/// aliasing.
+pub(crate) fn extract_aliases(exprs: &Vec<Expr>) -> HashMap<String, Expr> {
Review comment:
Thanks for the tip! I hadn't realized there's automatic deref coercion
from vectors to slices.
Updated in 3e52167.
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