Re: [I] panic: to_timestamp overflows converting large Decimal128 to nanoseconds [datafusion]

2026-05-24 Thread via GitHub 


Jefffrey closed issue #22213: panic: to_timestamp overflows converting large 
Decimal128 to nanoseconds
URL: https://github.com/apache/datafusion/issues/22213


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Re: [I] panic: to_timestamp overflows converting large Decimal128 to nanoseconds [datafusion]

2026-05-17 Thread via GitHub 


Sean-Kenneth-Doherty commented on issue #22213:
URL: https://github.com/apache/datafusion/issues/22213#issuecomment-4470321347

   take


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[I] panic: to_timestamp overflows converting large Decimal128 to nanoseconds [datafusion]

2026-05-15 Thread via GitHub 


Dandandan opened a new issue, #22213:
URL: https://github.com/apache/datafusion/issues/22213

   ### Describe the bug
   
   `to_timestamp` can panic during planning/constant folding for large 
`Decimal128` values. The decimal-to-nanoseconds conversion multiplies by a 
power of ten without checking for overflow.
   
   ### To Reproduce
   
   ```sql
   EXPLAIN SELECT to_timestamp(
 arrow_cast('99', 'Decimal128(38,0)')
   );
   ```
   
   ### Actual behavior
   
   ```text
   thread 'main' panicked at 
datafusion/functions/src/datetime/to_timestamp.rs:338:9:
   attempt to multiply with overflow
   ```
   
   ### Expected behavior
   
   Return an overflow error instead of panicking.
   
   ### Notes
   
   The panic is in `decimal_to_nanoseconds`.


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