kumarUjjawal commented on issue #17964:
URL: https://github.com/apache/datafusion/issues/17964#issuecomment-3695479663
For Char > chr:
The core computation logic differs fundamentally, so only
documentation/structural sharing is feasible:
| Aspect | DataFusion `chr` | Spark `char`
|
|------------------|-------------------------------------|----------------------------------------|
| Value Range | Full Unicode (0 – 0x10FFFF) | Uses `value %
256` (Latin-1 behavior) |
| Negative Input | Returns error | Returns empty
string |
| Example | `chr(321)` → error (invalid) | `char(321)` →
`A` (`321 % 256 = 65`) |
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