def insertData(self, dataset):
        __dataset = list()
        for item in dataset:
            __dataset.append([item["firstName"], item["secondName"], item["password"], item["hash"], item["date"]])

        self.connect = mysql.connector.connect(user='root', password='qx5sf5zvfk', host='127.0.0.1', database='testdb')

        sql_insert_query = """ INSERT INTO test_table (first_name, second_name, password, hash, full_date) 
                            VALUES (%s,%s,%s,%s,%s) """

        cursor = self.connect.cursor(prepared=True)
        result = cursor.executemany(sql_insert_query, __dataset)
        self.connect.commit()

        cursor.close()
        self.connect.close()