Chen-Yuan-Lai commented on code in PR #14826:
URL: https://github.com/apache/datafusion/pull/14826#discussion_r1988897840
##########
datafusion/functions/src/crypto/sha512.rs:
##########
@@ -52,11 +56,16 @@ impl Default for SHA512Func {
impl SHA512Func {
pub fn new() -> Self {
- use DataType::*;
Self {
- signature: Signature::uniform(
- 1,
- vec![Utf8View, Utf8, LargeUtf8, Binary, LargeBinary],
+ signature: Signature::one_of(
+ vec![
+ TypeSignature::Coercible(vec![Coercion::new_exact(
Review Comment:
I met another error after I used `new_implicit` ðŸ˜
```
External error: query failed: DataFusion error: Arrow error: Compute error:
Internal Error: Cannot cast BinaryView to BinaryArray of expected type
[SQL] select sha512(ascii_1) from test_basic_operator;
at test_files/string/./string_query.slt.part:1732
at test_files/string/dictionary_utf8.slt:58
```
I think the error came from `arrow-rs`
https://github.com/apache/arrow-rs/blob/5b04ca7bf756c5ca9edfba220060017684e2ecc6/arrow-cast/src/cast/dictionary.rs#L107-#L128
```rust
BinaryView => {
// `unpack_dictionary` can handle Utf8View/BinaryView types, but
incurs unnecessary data copy of the value buffer.
// we handle it here to avoid the copy.
let dict_array = array
.as_dictionary::<K>()
.downcast_dict::<BinaryArray>()
.ok_or_else(|| {
ArrowError::ComputeError(
"Internal Error: Cannot cast BinaryView to
BinaryArray of expected type"
.to_string(),
)
})?;
let binary_view = view_from_dict_values::<K, BinaryViewType,
BinaryType>(
dict_array.values(),
dict_array.keys(),
)?;
Ok(Arc::new(binary_view))
}
_ => unpack_di
```
When the dictionary is coverted to `BinaryView`, it can't be cast to
`BinaryArray`
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