yiguolei commented on code in PR #18627:
URL: https://github.com/apache/doris/pull/18627#discussion_r1166252568


##########
be/src/vec/data_types/serde/data_type_decimal_serde.h:
##########
@@ -0,0 +1,64 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include "data_type_serde.h"
+#include "vec/columns/column_decimal.h"
+
+namespace doris {
+
+namespace vectorized {
+
+template <typename T>
+class DataTypeDecimalSerDe : public DataTypeSerDe {
+    static_assert(IsDecimalNumber<T>);
+
+public:
+    Status write_column_to_pb(const IColumn& column, PValues& result, int 
start, int end) const override;
+    Status read_column_from_pb(IColumn& column, const PValues& arg) const 
override;
+};
+
+template <typename T>
+Status DataTypeDecimalSerDe<T>::write_column_to_pb(const IColumn& column, 
PValues& result,
+                                                   int start, int end) const {
+    int row_count = end - start;
+    const auto* col = check_and_get_column<ColumnDecimal<T>>(column);
+    if constexpr (std::is_same_v<T, Decimal<Int128>>) {

Review Comment:
   forget decimal32,64,128i



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