diff --git a/libs/libcommon/include/common/LocalDate.h b/libs/libcommon/include/common/LocalDate.h
index dc6904ba7e6..088a872d870 100644
--- a/libs/libcommon/include/common/LocalDate.h
+++ b/libs/libcommon/include/common/LocalDate.h
@@ -89,19 +89,8 @@ public:
     {
     }
 
-    LocalDate(const LocalDate & x)
-    {
-        operator=(x);
-    }
-
-    LocalDate & operator= (const LocalDate & x)
-    {
-        m_year = x.m_year;
-        m_month = x.m_month;
-        m_day = x.m_day;
-
-        return *this;
-    }
+    LocalDate(const LocalDate &) noexcept = default;
+    LocalDate & operator= (const LocalDate &) noexcept = default;
 
     LocalDate & operator= (time_t time)
     {
diff --git a/libs/libcommon/include/common/LocalDateTime.h b/libs/libcommon/include/common/LocalDateTime.h
index 67124385676..8e7534f50b5 100644
--- a/libs/libcommon/include/common/LocalDateTime.h
+++ b/libs/libcommon/include/common/LocalDateTime.h
@@ -95,22 +95,8 @@ public:
         init(data, length);
     }
 
-    LocalDateTime(const LocalDateTime & x)
-    {
-        operator=(x);
-    }
-
-    LocalDateTime & operator= (const LocalDateTime & x)
-    {
-        m_year = x.m_year;
-        m_month = x.m_month;
-        m_day = x.m_day;
-        m_hour = x.m_hour;
-        m_minute = x.m_minute;
-        m_second = x.m_second;
-
-        return *this;
-    }
+    LocalDateTime(const LocalDateTime &) noexcept = default;
+    LocalDateTime & operator= (const LocalDateTime &) noexcept = default;
 
     LocalDateTime & operator= (time_t time)
     {
diff --git a/libs/libmysqlxx/include/mysqlxx/Null.h b/libs/libmysqlxx/include/mysqlxx/Null.h
index 5750870c348..5043c37ac74 100644
--- a/libs/libmysqlxx/include/mysqlxx/Null.h
+++ b/libs/libmysqlxx/include/mysqlxx/Null.h
@@ -25,6 +25,7 @@ public:
     bool is_null;
 
     Null() : is_null(true) {}
+    Null(Null<T> &&) noexcept = default;
     Null(NullType data) : is_null(true) {}
     explicit Null(const T & data_) : data(data_), is_null(false) {}
 
@@ -42,8 +43,9 @@ public:
         return data;
     }
 
+    Null<T> & operator= (Null<T> &&) noexcept = default;
+    Null<T> & operator= (const Null<T> &) = default;
     Null<T> & operator= (const T & data_) { is_null = false; data = data_; return *this; }
-    Null<T> & operator= (const Null<T> & other) { is_null = other.is_null; data = other.data; return *this; }
     Null<T> & operator= (const NullType other) { is_null = true; data = T(); return *this; }
 
     bool isNull() const { return is_null; }