zhiqiang-hhhh commented on code in PR #34391:
URL: https://github.com/apache/doris/pull/34391#discussion_r1590792224


##########
be/src/vec/functions/round.h:
##########
@@ -630,9 +630,9 @@ struct Dispatcher {
 
             return col_res;
         } else {
-            throw doris::Exception(ErrorCode::INVALID_ARGUMENT,
-                                   "Unsupported column {} for function 
truncate",
-                                   const_col_general->get_name());
+            LOG(FATAL) << "__builtin_unreachable";

Review Comment:
   Actually I prefer using Exception instead of `LOG(FATAL)`, because we have 
no reason to explicitly make BE crash unless this logical error will lead to 
data incomplete or other problem worse than cluster shut down.
   
   



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