mapleFU opened a new issue, #43909:
URL: https://github.com/apache/arrow/issues/43909
### Describe the enhancement requested
Currently, a RowTable always get row by `encoded_row`, which returns an
`std::string`
We could supports an unsafe_encoded_row, like below:
```c++
/// Returns the encoded representation of the row at index i.
///
/// Note: this method is unsafe because it returns a string_view that
/// might be invalidated by subsequent calls to EncodeAndAppend or
/// Clear.
inline std::string_view unsafe_encoded_row(int32_t i) const {
if (i == kRowIdForNulls()) {
return {reinterpret_cast<const char*>(encoded_nulls_.data()),
encoded_nulls_.size()};
}
int32_t row_length = offsets_[i + 1] - offsets_[i];
return {reinterpret_cast<const char*>(bytes_.data() + offsets_[i]),
static_cast<uint32_t>(row_length)};
}
```
### Component(s)
C++
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