title: Timestamps to date SQL
body: <p>I need to change timestamp like this:</p>
  
  <pre><code>1519152103659000     
  1519152113786000     
  1519152118754001     
  1519152118972002     
  1519152119026003
  </code></pre>
  
  <p>to a date in sql. This timestamp is a column in my table. I use timestamp command but I have a error: </p>
  
  <p>Error: No matching signature for function TIMESTAMP for argument types: INT64. Supported signatures: TIMESTAMP(STRING, [STRING]); TIMESTAMP(DATE, [STRING]); TIMESTAMP(DATETIME, [STRING]) at [2:1]</p>
  
  <p>Thanks!!</p>