title: How to map the query String result to a custom object(model) in sqlalchemy and django?
body: <p>I want to return result in to custom model(class) but I got this error message:</p>
  
  <blockquote>
    <p>SQL expression, column, or mapped entity expected </p>
  </blockquote>
  
  <p>I don't know where I went wrong.</p>
  
  <pre><code> connect = Connector()
   Session = sessionmaker(bind=connect.ConnectorMySql())
   ses = Session()
   query = u"""
        SELECT
             `reports`.ID As 'ID',
              reports.Title AS 'ReportTitle',
             `reports`.Text as 'ReporText',
             `reports`.Status as 'Status',
             `user`.ID AS 'ReporterID',
             `user`.Name as 'ReporterName' ,
             `user`.Username as 'ReporterUserName',
             `user`.ImageProfile as 'ReporterAvatar',
             `Clinet`.ID AS 'ClinetID',
             `Clinet`.SiteUserName AS 'ClinetUserName',
             `Clinet`.ImageProfile as 'ClinetAvatar'
        FROM reports
        JOIN Clinet  on reports.ClinetID = `Clinet`.ID
        JOIN users user on reports.UserID = `user`.ID
        where
             :pClinetID IS NULL OR reports.ClinetID=:pClinetID
        AND
             :pStatus IS NULL OR reports.Status=:pStatus;
   """
   QueryResult=CustomModel()
   QueryResult=ses.query(CustomModel).from_statement(query).all()   
  
   return QueryResult
  </code></pre>