title: BigQuery select multiple key values
body: <p>With a custom event in Firebase exported to BigQuery, multiple key-value params can exist within it. I can't seem to figure out how to select more than just one of these using "standard SQL".</p>
  
  <p><a href="https://i.stack.imgur.com/aH69s.png" rel="noreferrer"><img src="https://i.stack.imgur.com/aH69s.png" alt="How would I project both msg and succes values (string_value and int_value) into one record"></a></p>