Mryange commented on code in PR #36110:
URL: https://github.com/apache/doris/pull/36110#discussion_r1634526250


##########
be/src/vec/functions/function_timestamp.cpp:
##########
@@ -702,7 +702,7 @@ struct UnixTimeStampStrImpl {
         std::tie(col_right, format_const) =
                 unpack_if_const(block.get_by_position(arguments[1]).column);
 
-        auto col_result = ColumnDecimal<Decimal64>::create(input_rows_count, 
0);
+        auto col_result = ColumnDecimal<Decimal64>::create(input_rows_count, 
6);

Review Comment:
   > does FE have same assumption?
   
       private static final List<FunctionSignature> SIGNATURES = 
ImmutableList.of(
               FunctionSignature.ret(IntegerType.INSTANCE).args(),
               
FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DateTimeV2Type.SYSTEM_DEFAULT),
               
FunctionSignature.ret(IntegerType.INSTANCE).args(DateV2Type.INSTANCE),
               
FunctionSignature.ret(IntegerType.INSTANCE).args(DateTimeType.INSTANCE),
               
FunctionSignature.ret(IntegerType.INSTANCE).args(DateType.INSTANCE),
               FunctionSignature.ret(DecimalV3Type.createDecimalV3Type(16, 
6)).args(VarcharType.SYSTEM_DEFAULT,
                       VarcharType.SYSTEM_DEFAULT),
               FunctionSignature.ret(DecimalV3Type.createDecimalV3Type(16, 
6)).args(StringType.INSTANCE,
                       StringType.INSTANCE)
       );
   



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