alamb commented on code in PR #12097:
URL: https://github.com/apache/datafusion/pull/12097#discussion_r1729194704
##########
datafusion/functions-nested/src/array_has.rs:
##########
@@ -251,75 +237,176 @@ impl ScalarUDFImpl for ArrayHasAny {
}
/// Represents the type of comparison for array_has.
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Clone, Copy)]
enum ComparisonType {
// array_has_all
All,
// array_has_any
Any,
- // array_has
- Single,
}
-fn general_array_has_dispatch<O: OffsetSizeTrait>(
+fn array_has_dispatch<O: OffsetSizeTrait>(
+ haystack: &ArrayRef,
+ needle: &ArrayRef,
+) -> Result<ArrayRef> {
+ let haystack = as_generic_list_array::<O>(haystack)?;
+ match needle.data_type() {
+ DataType::Utf8 | DataType::LargeUtf8 | DataType::Utf8View => {
+ array_has_string_internal::<O>(haystack, needle)
+ }
+ _ => general_array_has::<O>(haystack, needle),
+ }
+}
+
+fn array_has_all_and_any_dispatch<O: OffsetSizeTrait>(
haystack: &ArrayRef,
needle: &ArrayRef,
comparison_type: ComparisonType,
) -> Result<ArrayRef> {
- let array = if comparison_type == ComparisonType::Single {
- let arr = as_generic_list_array::<O>(haystack)?;
- check_datatypes("array_has", &[arr.values(), needle])?;
- arr
- } else {
- check_datatypes("array_has", &[haystack, needle])?;
- as_generic_list_array::<O>(haystack)?
- };
+ let haystack = as_generic_list_array::<O>(haystack)?;
+ let needle = as_generic_list_array::<O>(needle)?;
+ match needle.data_type() {
+ DataType::Utf8 | DataType::LargeUtf8 | DataType::Utf8View => {
+ array_has_all_and_any_string_internal::<O>(haystack, needle,
comparison_type)
+ }
+ _ => general_array_has_for_all_and_any::<O>(haystack, needle,
comparison_type),
+ }
+}
- let mut boolean_builder = BooleanArray::builder(array.len());
+fn array_has_string_internal<O: OffsetSizeTrait>(
+ haystack: &GenericListArray<O>,
+ needle: &ArrayRef,
+) -> Result<ArrayRef> {
+ let mut boolean_builder = BooleanArray::builder(haystack.len());
+ for (arr, element) in
haystack.iter().zip(string_array_to_vec(needle).into_iter()) {
+ match (arr, element) {
+ (Some(arr), Some(element)) => {
+ boolean_builder.append_value(
+ string_array_to_vec(&arr)
Review Comment:
Thanks @jayzhan211 -- when reviewing
https://github.com/apache/datafusion/pull/12125 and re-reading
https://github.com/apache/datafusion/issues/12062, I wonder if what would
really be useful is making specialized implementations when the second argument
is a constant?
Spefically, what I think what will happen now is `array_has(col, 'foo')`
will make a `StringArray` that has the string `'foo'` repeated many times
I wonder how much better implementing a special implementation for
`array_has(array: ArrayRef, val: ScalarValue)` would be? I bet *much* faster
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