Function array_distinct_inner

datafusion/functions-nested/src/set_ops.rs:301–315

array_distinct SQL function example: from list [1, 3, 2, 3, 1, 2, 4] to [1, 2, 3, 4]

(args: &[ArrayRef])

/// array_distinct SQL function
/// example: from list [1, 3, 2, 3, 1, 2, 4] to [1, 2, 3, 4]
fn array_distinct_inner(args: &[ArrayRef]) -> Result<ArrayRef> {
    let [array] = take_function_args("array_distinct", args)?;
    match array.data_type() {
        Null => Ok(Arc::clone(array)),
        List(field) => {
            let array = as_list_array(&array)?;
            general_array_distinct(array, field)
        }
        LargeList(field) => {
            let array = as_large_list_array(&array)?;
            general_array_distinct(array, field)
        }
        arg_type => exec_err!("array_distinct does not support type {arg_type}"),
    }
}

#[derive(Debug, PartialEq, Copy, Clone)]
enum SetOp {