title: Bigquery querying by time of event
body: <p>I use standard SQL for Bigquery. I need to find all events that happened in the morning, afternoon or evening. I can do something like this</p>
  
  <pre><code>WHERE TIMESTAMP_MICROS(event.timestamp_micros) BETWEEN '2017-04-01 12:00:00' AND '2017-06-01 16:00:00'
  </code></pre>
  
  <p>But I need only time without date. Is there some way to query only by time?</p>