title: BigQuery COUNT(DISTINCT value) vs COUNT(value)
body: <p>I found a glitch/bug in bigquery.
  We got a table based on Bank Statistic data under the
  starschema.net:clouddb:bank.Banks_token</p>
  
  <p>If i run the following query:</p>
  
  <pre><code>SELECT count(*) as totalrow,
  count(DISTINCT BankId ) as bankidcnt
  FROM bank.Banks_token;
  </code></pre>
  
  <p>And i get the following result:</p>
  
  <pre><code>Row totalrow    bankidcnt    
  1   9513    9903    
  </code></pre>
  
  <p>My problem is that if i have 9513row how could i get 9903row, which is 390row more than the rowcount in the table.</p>