jayzhan211 commented on code in PR #9656:
URL: https://github.com/apache/arrow-datafusion/pull/9656#discussion_r1527982956
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datafusion/functions-array/src/utils.rs:
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@@ -108,6 +111,107 @@ pub(crate) fn align_array_dimensions<O: OffsetSizeTrait>(
aligned_args
}
+/// Computes a BooleanArray indicating equality or inequality between elements
in a list array and a specified element array.
+///
+/// # Arguments
+///
+/// * `list_array_row` - A reference to a trait object implementing the Arrow
`Array` trait. It represents the list array for which the equality or
inequality will be compared.
+///
+/// * `element_array` - A reference to a trait object implementing the Arrow
`Array` trait. It represents the array with which each element in the
`list_array_row` will be compared.
+///
+/// * `row_index` - The index of the row in the `element_array` and
`list_array` to use for the comparison.
+///
+/// * `eq` - A boolean flag. If `true`, the function computes equality; if
`false`, it computes inequality.
+///
+/// # Returns
+///
+/// Returns a `Result<BooleanArray>` representing the comparison results. The
result may contain an error if there are issues with the computation.
+///
+/// # Example
+///
+/// ```text
+/// compare_element_to_list(
+/// [1, 2, 3], [1, 2, 3], 0, true => [true, false, false]
+/// [1, 2, 3, 3, 2, 1], [1, 2, 3], 1, true => [false, true, false, false,
true, false]
+///
+/// [[1, 2, 3], [2, 3, 4], [3, 4, 5]], [[1, 2, 3], [2, 3, 4], [3, 4, 5]],
0, true => [true, false, false]
+/// [[1, 2, 3], [2, 3, 4], [2, 3, 4]], [[1, 2, 3], [2, 3, 4], [3, 4, 5]],
1, false => [true, false, false]
+/// )
+/// ```
+pub(crate) fn compare_element_to_list(
Review Comment:
There are three duplicated code including this one, can you remove other two?
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