jayzhan211 commented on code in PR #9352:
URL: https://github.com/apache/arrow-datafusion/pull/9352#discussion_r1503682788
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datafusion/functions-array/src/kernels.rs:
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@@ -252,3 +253,67 @@ pub(super) fn array_to_string(args: &[ArrayRef]) ->
datafusion_common::Result<Ar
Ok(Arc::new(string_arr))
}
+
+use arrow::array::ListArray;
+use arrow::buffer::OffsetBuffer;
+use arrow::datatypes::Field;
+/// Generates an array of integers from start to stop with a given step.
+///
+/// This function takes 1 to 3 ArrayRefs as arguments, representing start,
stop, and step values.
+/// It returns a `Result<ArrayRef>` representing the resulting ListArray after
the operation.
+///
+/// # Arguments
+///
+/// * `args` - An array of 1 to 3 ArrayRefs representing start, stop, and
step(step value can not be zero.) values.
+///
+/// # Examples
+///
+/// gen_range(3) => [0, 1, 2]
+/// gen_range(1, 4) => [1, 2, 3]
+/// gen_range(1, 7, 2) => [1, 3, 5]
+pub fn gen_range(
Review Comment:
dont forget to delete the code in array_expression.rs
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