kosiew commented on code in PR #20787:
URL: https://github.com/apache/datafusion/pull/20787#discussion_r2972910775
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datafusion/functions/src/strings.rs:
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@@ -165,6 +187,12 @@ impl StringViewArrayBuilder {
self.block.push_str(array.value(i));
}
}
+ ColumnarValueRef::NullableBinaryArray(array) => {
Review Comment:
Nice catch fixing validation in the `StringArrayBuilder` and
`LargeStringArrayBuilder` finish paths.
I think there is still one case left here though.
`concat` still prefers `Utf8View` whenever any argument has that type. In
that branch, binary inputs are written through `StringViewArrayBuilder`, and
both binary array variants still call `std::str::from_utf8(...).unwrap()` on
the bytes. That means a query like `concat(arrow_cast('ok', 'Utf8View'),
binary_col)` can still panic on malformed UTF-8 instead of returning an
execution error.
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