jayzhan211 commented on code in PR #13756:
URL: https://github.com/apache/datafusion/pull/13756#discussion_r1888442933
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datafusion/functions-nested/src/extract.rs:
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@@ -993,3 +993,84 @@ where
let data = mutable.freeze();
Ok(arrow::array::make_array(data))
}
+
+#[cfg(test)]
+mod tests {
+ use super::array_element_udf;
+ use arrow_schema::{DataType, Field};
+ use datafusion_common::{Column, DFSchema, ScalarValue};
+ use datafusion_expr::expr::ScalarFunction;
+ use datafusion_expr::{cast, Expr, ExprSchemable};
+ use std::collections::HashMap;
+
+ #[test]
+ fn test_array_element_return_type() {
+ let complex_type = DataType::FixedSizeList(
Review Comment:
> the LogicalPlan & Expr, have two meanings: syntactic and semantic.
Is there example about the difference of this two, especially for function.
For Expr::ScalarFunction, it has no difference in LogicalPlan, we don't do
anything special, but I think this is what you don't expect. What should we
have in LogicalPlan, `Expr::ScalarFunction` but with coerced input?
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