pepijnve opened a new issue, #16459:
URL: https://github.com/apache/datafusion/issues/16459
### Describe the bug
When evaluating the expression `array_has(null, 'foobar')`, the result is
dependent on the runtime string array type. As demonstrated by the test case
below, when using a string view array `array_has` returns `false`. When using a
non-view string array `null` is returned instead.
### To Reproduce
Run the following test case once as is, and once with the variant string
builder uncommented. First run passes, second run fails.
```
#[test]
fn test_array_has() -> Result<(), DataFusionError> {
let haystack_field = Arc::new(Field::new_list(
"haystack",
Field::new_list(
"",
Field::new("", DataType::Utf8, true),
true,
),
true,
));
let needle_field = Arc::new(Field::new_list(
"needle",
Field::new("", DataType::Utf8, true),
true,
));
let return_field = Arc::new(Field::new_list(
"return",
Field::new("", DataType::Boolean, true),
true,
));
let string_builder = StringViewBuilder::new();
// Fails when using GenericStringBuilder
// let string_builder: GenericStringBuilder<i32> =
GenericStringBuilder::new();
let mut haystack_builder = ListBuilder::new(string_builder);
// Append null array
haystack_builder.append_null();
let haystack = ColumnarValue::Array(Arc::new(haystack_builder.finish()));
let needle =
ColumnarValue::Scalar(ScalarValue::Utf8(Some("foo".to_string())));
let result = ArrayHas::new().invoke_with_args(ScalarFunctionArgs {
args: vec![haystack, needle],
arg_fields: vec![haystack_field.clone(), needle_field.clone()],
number_rows: 1,
return_field: return_field.clone(),
})?;
match result.into_array(1)?.as_boolean_opt() {
None => {
assert!(false, "Expected boolean array");
}
Some(boolean_array) => {
for b in boolean_array {
match b {
None => {
assert!(false, "Unexpected null value");
}
Some(true) => {
assert!(false, "Unexpected true value");
}
Some(false) => {
// Ok
}
}
}
}
}
Ok(())
}
```
### Expected behavior
`array_has` returns consistent results wrt `null` arrays regardless of the
type of it's haystack argument.
### Additional context
_No response_
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