title: Error in pyodbc: 'pyodbc.Cursor' object has no attribute 'commit'
body: <p>I want to connect to <code>SQL SERVER</code> database from Python with <code>pyodbc</code> and <code>freetds</code>.</p>
  
  <p>My connection is OK.</p>
  
  <p>My code:</p>
  
  <pre><code>class GetSystems(Resource):
  def get(self):
      try:
          cur = Connection.conn.cursor()
          cur.execute(
              "SELECT id,systemName,SystemDescription FROM MEFSystem")
          rows = cur.fetchall()
          objects_list = []
          for row in rows:
              d = collections.OrderedDict()
              d['id'] = row[0]
              d['systemName'] = row[1]
              d['systemDescription'] = row[2]
              objects_list.append(d)
          logger.info(objects_list)
          cur.commit()
          cur.close()
          logger.info(objects_list)
      except Exception as inst:
          cur.rollback()
          cur.close()
          print type(inst)
          print inst.args
          print inst
          logger.error(type(inst))
          logger.error(inst.args)
          logger.error(inst)
      return objects_list
  </code></pre>
  
  <p>This generates an error in <code>cur.commit()</code>:  <code>pyodbc.Cursor object has no attribute 'commit'</code> and returns unknown data:</p>
  
  <pre><code>[
  {
      "id": 2, 
      "systemDescription": "", 
      "systemName": "\uda00\udc53\ud940\udc41"
  }, 
  {
      "id": 3, 
      "systemDescription": "", 
      "systemName": "\uda00\udc53\ud800\udc47"
  }, 
  {
      "id": 4, 
      "systemDescription": "", 
      "systemName": "\ud900\udc52\ud8c0\udc4e\ud880\udc41"
  }
  ]
  </code></pre>
  
  <p>The data should be:</p>
  
  <pre><code>[
  {
      "id": 2, 
      "systemDescription": "", 
      "systemName": "SIAF"
  }, 
  {
      "id": 3, 
      "systemDescription": "", 
      "systemName": "SIGA"
  }, 
  {
      "id": 4, 
      "systemDescription": "", 
      "systemName": "RENTAS"
  }
  ]
  </code></pre>
  
  <p><strong>UPDATE</strong><br>
  I commented the commit, but return data unknown from database. look => "systemName": "\uda00\udc53\ud940\udc41", should be "systemName": "SIGA"</p>