title: Access Big Query from other Project
body: <p>I am Managing two GCP projects by Terraform:</p>
  <p>Production and Test.</p>
  <p>There is an active Workflow running on <strong>Production</strong> which writes data in an Big Query Database. Now I want to create an Instance on <strong>Test</strong> to work with the data.</p>
  <p>How can I access the Data in the Production Big Query from Test?</p>
  <p>The service account has currently the roles  roles/bigquery.dataEditor, roles/bigquery.jobUser and  roles/bigquery.user but this seems project specific?</p>