title: How to return several values with Stored functions in BigQuery?
body: <p>Is there any way to return multiple results in bigquery (stored functions)
  I heard we should be able to do it with Array.
  Here is an example :</p>
  <pre><code>create function if not exists hw6.GetNumTherapistWorking(
      dateInput date
  )
  returns count1,count2,count3
  as
  (
      (select count1,count2,count3 from table....);
  )
  </code></pre>