BiteTheDDDDt commented on code in PR #23677:
URL: https://github.com/apache/doris/pull/23677#discussion_r1310222374
##########
be/src/vec/data_types/data_type_decimal.cpp:
##########
@@ -210,6 +210,64 @@ Decimal128I
DataTypeDecimal<Decimal128I>::get_scale_multiplier(UInt32 scale) {
return common::exp10_i128(scale);
}
+template <typename T>
+typename T::NativeType max_decimal_value(UInt32 precision) {
+ return 0;
+}
+template <>
+Int32 max_decimal_value<Decimal32>(UInt32 precision) {
+ return 999999999 / DataTypeDecimal<Decimal32>::get_scale_multiplier(
+ (UInt32)(max_decimal_precision<Decimal32>() -
precision));
+}
+template <>
+Int64 max_decimal_value<Decimal64>(UInt32 precision) {
+ return 999999999999999999 /
DataTypeDecimal<Decimal64>::get_scale_multiplier(
+
(UInt64)max_decimal_precision<Decimal64>() - precision);
+}
+template <>
+Int128 max_decimal_value<Decimal128>(UInt32 precision) {
+ return (static_cast<int128_t>(999999999999999999ll) * 100000000000000000ll
* 1000ll +
+ static_cast<int128_t>(99999999999999999ll) * 1000ll + 999ll) /
+ DataTypeDecimal<Decimal128>::get_scale_multiplier(
+ (UInt64)max_decimal_precision<Decimal128>() - precision);
+}
+template <>
+Int128 max_decimal_value<Decimal128I>(UInt32 precision) {
+ return (static_cast<int128_t>(999999999999999999ll) * 100000000000000000ll
* 1000ll +
Review Comment:
use type_limit
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