[I] Question about Decimal Type Limitations in Iceberg [iceberg]

[via GitHub]

rice668 opened a new issue, #11920:
URL: https://github.com/apache/iceberg/issues/11920

   ### Query engine
   
   Spark
   
   ### Question
   
   Hello Iceberg Community,
   
   <img width="670" alt="image" 
src="https://github.com/user-attachments/assets/573a1a35-a3da-45a2-bb7e-10ec378dfd4c";
 />
   
   I would like to ask why Iceberg imposes the restriction on changing the 
scale for the decimal type. According to the SQL standard, the scale can indeed 
be changed. For instance, the SQL standard states that:
   
   
![WeChatWorkScreenshot_e28f4f34-1eca-42bf-b370-c96e335ff958](https://github.com/user-attachments/assets/283fe262-61af-487f-a5df-dd2e7ee60f22)
   
   Given this, I am curious about the rationale behind Iceberg's decision to 
restrict the change of scale for decimal types.
   
   Thank you!


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