joroKr21 commented on code in PR #15149:
URL: https://github.com/apache/datafusion/pull/15149#discussion_r1996628218
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datafusion/functions-nested/src/extract.rs:
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@@ -200,6 +199,7 @@ fn array_element_inner(args: &[ArrayRef]) ->
Result<ArrayRef> {
let [array, indexes] = take_function_args("array_element", args)?;
match &array.data_type() {
+ Null => Ok(Arc::new(NullArray::new(array.len()))),
Review Comment:
I will write a test that shows the issue. But basically something like
`array_union(make_array(), ['x', 'y', 'z'])` will be an issue because we can't
union a list of ints and a list of strings.
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