krishvishal commented on code in PR #16203:
URL: https://github.com/apache/datafusion/pull/16203#discussion_r2124965299
##########
datafusion/functions-nested/src/extract.rs:
##########
@@ -225,44 +252,37 @@ where
return Ok(Arc::new(NullArray::new(array.len())));
}
+ // Check if we have a struct with null fields
+ let has_struct_with_null_fields = if let DataType::Struct(fields) =
values.data_type()
+ {
+ fields.iter().any(|field| field.data_type() == &Null)
+ } else {
+ false
+ };
+
+ // If we have problematic struct fields, we'll need to handle this
differently
+ if has_struct_with_null_fields {
+ return handle_struct_with_null_fields(array, indexes);
+ }
+
let original_data = values.to_data();
let capacity = Capacities::Array(original_data.len());
// use_nulls: true, we don't construct List for array_element, so we need
explicit nulls.
let mut mutable =
MutableArrayData::with_capacities(vec![&original_data], true,
capacity);
- fn adjusted_array_index<O: OffsetSizeTrait>(index: i64, len: O) ->
Result<Option<O>>
- where
- i64: TryInto<O>,
- {
- let index: O = index.try_into().map_err(|_| {
- DataFusionError::Execution(format!(
- "array_element got invalid index: {index}"
- ))
- })?;
- // 0 ~ len - 1
- let adjusted_zero_index = if index < O::usize_as(0) {
- index + len
- } else {
- index - O::usize_as(1)
- };
-
- if O::usize_as(0) <= adjusted_zero_index && adjusted_zero_index < len {
- Ok(Some(adjusted_zero_index))
- } else {
- // Out of bounds
- Ok(None)
- }
- }
-
for (row_index, offset_window) in array.offsets().windows(2).enumerate() {
let start = offset_window[0];
let end = offset_window[1];
let len = end - start;
- // array is null
- if len == O::usize_as(0) {
+ if array.is_null(row_index) || len == O::usize_as(0) {
Review Comment:
From my understanding
`is_null()` checks if an element at an index is `NULL`.
2nd condition checks if the element is an empty list.
They are checking different things right?
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