adriangb commented on code in PR #16461:
URL: https://github.com/apache/datafusion/pull/16461#discussion_r2159712965
##########
datafusion/datasource-parquet/src/opener.rs:
##########
@@ -524,6 +539,84 @@ fn should_enable_page_index(
.unwrap_or(false)
}
+use datafusion_physical_expr::expressions;
+
+/// Given a [`PhysicalExpr`] and a [`SchemaRef`], returns a new
[`PhysicalExpr`] that
+/// is cast to the specified data type.
+/// Preference is always given to casting literal values to the data type of
the column
+/// since casting the column to the literal value's data type can be
significantly more expensive.
+/// Given two columns the cast is applied arbitrarily to the first column.
+pub fn cast_expr_to_schema(
Review Comment:
Sounds good to me, I will work on this next! Agreed on the unit tests 😄
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