title: BigQuery API Error: "The project ___ has not enabled BigQuery."
body: <p>I'm trying to use bigrquery from an interactive R session for the first time. I've installed the R bigrquery package and successfully established a connection. I've authenticated following a redirect from the interactive RStudio session to the web browser for login, so oauth seems to be working correctly. However, when I try to run a query, such as <code>DBI::dbReadTable(con, "A549_raw_merged_TADs")[1:6, ]</code>, I get the error <code>Error: The project variant-annotation has not enabled BigQuery. [invalid]</code>.</p>
  
  <p>I am sure I need to enable something else in the project on the Google side, but I'm not sure what I need to enable, or how to do that from the web console interface.</p>
  
  <p>Is this documented anywhere, or can anyone here give me instructions?</p>
  
  <p>Note: I have confirmed that the BigQuery API has <code>Activation status</code> of <code>Enabled</code> via the console at <a href="https://console.cloud.google.com/apis/api/bigquery-json.googleapis.com/overview" rel="nofollow noreferrer">https://console.cloud.google.com/apis/api/bigquery-json.googleapis.com/overview</a>, so although my question is the same as <a href="https://stackoverflow.com/questions/41448606/error-processing-job-project-has-not-enabled-bigquery/">Error processing job: Project has not enabled BigQuery</a>, the issue appears to be different.</p>
  
  <p>Additional information: when I check the BigQuery API status via the console link above, there's a notification that "To use this API, you may need credentials. Click 'Create credentials' to get started."</p>
  
  <p>So it may be that my assumption that oauth seems to be working is not correct.</p>