title: Google BigQuery set limit on query size using estimates
body: <p>Google <code>BigQuery</code> has a dry-run feature by which we can get an estimate of the  total query size before running it.<br>
  Is there some hack/mechanism on the <code>BigQuery</code> by which we could set up an upper limit on the allowed size of queries, and automatically reject any queries that exceed that size?   </p>
  
  <p>This would be useful, so as to avoid making any queries accidentally that might possibly exceed the set limit (on <code>WEB UI</code>, <code>COMMAND-LINE</code> and <code>API</code>).</p>