[I] Spark `char` fails on a NULL scalar argument [datafusion]

["ranflarion (via GitHub)" <gi...@apache.org>]

ranflarion opened a new issue, #26125:
URL: https://github.com/apache/datafusion/issues/26125

   ### Describe the bug
   
   datafusion-spark's `char` fails on a NULL scalar argument with `Execution error: The argument must be an Int64 array or scalar.`, where Spark returns NULL. `spark_chr` (`datafusion/spark/src/function/string/char.rs`) handles `ScalarValue::Int64(Some(_))` and sends `Int64(None)` to that error. NULL rows of an array argument already return NULL.
   
   ### To Reproduce
   
   ```sql
   SELECT char(NULL::INT);
   ```
   
   ### Expected behavior
   
   `NULL`, as Spark returns for `char(NULL)`.
   


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Re: [I] Spark `char` fails on a NULL scalar argument [datafusion]

["neilconway (via GitHub)" <gi...@apache.org>]

neilconway closed issue #26125: Spark `char` fails on a NULL scalar argument
URL: https://github.com/apache/datafusion/issues/26125


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