diff --git a/be/src/olap/tablet_schema.cpp b/be/src/olap/tablet_schema.cpp
index 36610f909748f2..6d462c974a6765 100644
--- a/be/src/olap/tablet_schema.cpp
+++ b/be/src/olap/tablet_schema.cpp
@@ -1000,12 +1000,15 @@ void TabletSchema::init_from_pb(const TabletSchemaPB& schema, bool ignore_extrac
         if (column->is_variant_type()) {
             ++_num_variant_columns;
         }
+
         _cols.emplace_back(std::move(column));
-        _vl_field_mem_size +=
-                sizeof(StringRef) + sizeof(char) * _cols.back()->name().size() + sizeof(size_t);
-        _field_name_to_index.emplace(StringRef(_cols.back()->name()), _num_columns);
-        _vl_field_mem_size += sizeof(int32_t) * 2;
-        _field_id_to_index[_cols.back()->unique_id()] = _num_columns;
+        if (!_cols.back()->is_extracted_column()) {
+            _vl_field_mem_size +=
+                    sizeof(StringRef) + sizeof(char) * _cols.back()->name().size() + sizeof(size_t);
+            _field_name_to_index.emplace(StringRef(_cols.back()->name()), _num_columns);
+            _vl_field_mem_size += sizeof(int32_t) * 2;
+            _field_id_to_index[_cols.back()->unique_id()] = _num_columns;
+        }
         _num_columns++;
     }
     for (auto& index_pb : schema.index()) {