title: sqlalchemy query: result column names
body: <p>I have a model (declared using Declarative base) called <code>DevicesGpsTelemetry</code>. I make query like this:</p>
  
  <pre><code>models = session.query(
      DevicesGps.ReceivedDateUtc, 
      DevicesGps.ReceivedTimeUtc,   
      DevicesGps.Latitude,                                 
      DevicesGps.Longitude)
  </code></pre>
  
  <p>And it renders as:</p>
  
  <pre><code>    SELECT   
      devices_gps."ReceivedDateUtc" AS "devices_gps_ReceivedDateUtc", 
      devices_gps."ReceivedTimeUtc" AS "devices_gps_ReceivedTimeUtc", 
      devices_gps."Latitude" AS "devices_gps_Latitude", 
      devices_gps."Longitude" AS "devices_gps_Longitude" 
          FROM devices_gps
  </code></pre>
  
  <p>My question: how to change the names which go after AS statement (like <code>"gps_telemetry_ReceivedDateUtc"</code>) to something I want?</p>
  
  <p>Background: these names are important for me because I do <code>pandas.read_sql</code> with this query and the names become DataFrame's column names</p>