title: BigQuery: output ISO string for a timestamp field?
body: <p>I have a BigQuery table with a TIMESTAMP field.</p>
  
  <p>I have read through <a href="https://cloud.google.com/bigquery/docs/reference/legacy-sql#functions" rel="nofollow noreferrer">the available functions</a>, but I can't find a way to output the ISO string of the timestamp field.</p>
  
  <p>Is there a way to do this?</p>