title: Bigquery error: 400 No matching signature for operator BETWEEN for argument types: DATE, TIMESTAMP, TIMESTAMP
body: <p>I have deployed my webapp on Google Cloud Bigquery, when I query the data I get an error <code>"400 No matching signature for operator BETWEEN for argument types: DATE, STRING, STRING. Supported signature: (ANY) BETWEEN (ANY) AND (ANY) at [2:38]"</code>. Here is my sql:</p>
  
  <pre><code>"""SELECT 
     Record_Start_Time, Generator_Power 
  FROM 
     Furnace.FurnaceData
  WHERE 
     Record_Start_Time BETWEEN TIMESTAMP("2018-01-21")
  AND 
    TIMESTAMP("2018-07-21") 
  ORDER BY Record_Start_Time
  LIMIT 100""".format(request.form['start'],request.form['end'])
  </code></pre>