In Google bigquery, where to find the returning user variable for visitor?

In Google BigQuery, I am trying to find if there is a variable, which tells if the visitor is returning visitor or not. In other words, I want to find out if a visitor already had a cookie placed in his browser or it is a new visitor?

Is it possible to do so? Does such a variable exist in Google BigQuery. In Google Analytics dashboard, I can see that such a variable exists.