yiguolei commented on code in PR #22801:
URL: https://github.com/apache/doris/pull/22801#discussion_r1292008022


##########
be/src/vec/data_types/data_type_decimal.h:
##########
@@ -407,10 +407,10 @@ constexpr bool IsDataTypeDecimalOrNumber =
         IsDataTypeDecimal<DataType> || IsDataTypeNumber<DataType>;
 
 template <typename FromDataType, typename ToDataType>
-std::enable_if_t<IsDataTypeDecimal<FromDataType> && 
IsDataTypeDecimal<ToDataType>,
-                 typename ToDataType::FieldType>
-convert_decimals(const typename FromDataType::FieldType& value, UInt32 
scale_from, UInt32 scale_to,
-                 UInt8* overflow_flag = nullptr) {
+    requires IsDataTypeDecimal<FromDataType> && IsDataTypeDecimal<ToDataType>

Review Comment:
   requires () ?



##########
be/src/vec/data_types/data_type_decimal.h:
##########
@@ -534,9 +534,9 @@ void convert_decimal_cols(
 }
 
 template <typename FromDataType, typename ToDataType>
-std::enable_if_t<IsDataTypeDecimal<FromDataType> && 
IsDataTypeNumber<ToDataType>,
-                 typename ToDataType::FieldType>
-convert_from_decimal(const typename FromDataType::FieldType& value, UInt32 
scale) {
+    requires IsDataTypeDecimal<FromDataType> && IsDataTypeNumber<ToDataType>

Review Comment:
   requires ()?



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