diff --git a/src/oatpp-postgresql/QueryResult.cpp b/src/oatpp-postgresql/QueryResult.cpp
index a1cc670..a000b4c 100644
--- a/src/oatpp-postgresql/QueryResult.cpp
+++ b/src/oatpp-postgresql/QueryResult.cpp
@@ -97,6 +97,10 @@ v_int64 QueryResult::getKnownCount() const {
   return 0;
 }
 
+v_uint64 QueryResult::getRowsAffected() const {
+  return m_resultData.affectedRowCount;
+}
+
 bool QueryResult::hasMoreToFetch() const {
   return getKnownCount() > 0;
 }
diff --git a/src/oatpp-postgresql/QueryResult.hpp b/src/oatpp-postgresql/QueryResult.hpp
index 51a2852..f218031 100644
--- a/src/oatpp-postgresql/QueryResult.hpp
+++ b/src/oatpp-postgresql/QueryResult.hpp
@@ -71,6 +71,8 @@ class QueryResult : public orm::QueryResult {
 
   bool hasMoreToFetch() const override;
 
+  v_uint64 getRowsAffected() const override;
+
   oatpp::Void fetch(const oatpp::Type* const resultType, v_int64 count) override;
 
 };
diff --git a/src/oatpp-postgresql/mapping/ResultMapper.cpp b/src/oatpp-postgresql/mapping/ResultMapper.cpp
index f1054f3..6be2fbe 100644
--- a/src/oatpp-postgresql/mapping/ResultMapper.cpp
+++ b/src/oatpp-postgresql/mapping/ResultMapper.cpp
@@ -24,6 +24,7 @@
 
 #include "ResultMapper.hpp"
 #include "oatpp/base/Log.hpp"
+#include "oatpp/utils/parser/Caret.hpp"
 
 namespace oatpp { namespace postgresql { namespace mapping {
 
@@ -44,6 +45,9 @@ ResultMapper::ResultData::ResultData(PGresult* pDbResult, const std::shared_ptr<
     }
   }
 
+  char* rowsAffectedStr = PQcmdTuples(dbResult); // will be freed when the result is freed
+  affectedRowCount = oatpp::utils::parser::Caret(rowsAffectedStr).parseUnsignedInt();
+
 }
 
 ResultMapper::ResultMapper() {
diff --git a/src/oatpp-postgresql/mapping/ResultMapper.hpp b/src/oatpp-postgresql/mapping/ResultMapper.hpp
index b4e028f..d4d85cb 100644
--- a/src/oatpp-postgresql/mapping/ResultMapper.hpp
+++ b/src/oatpp-postgresql/mapping/ResultMapper.hpp
@@ -85,6 +85,11 @@ class ResultMapper {
      */
     v_int64 rowCount;
 
+    /**
+     * rows affected by the operation might be 0
+     */
+    v_uint64 affectedRowCount;
+
   };
 
 private: