text: 
  SELECT count(DISTINCT account.id)
  FROM account,
       site,
       so_user,
       question q,
       post_link pl,
       tag,
       tag_question tq
  WHERE NOT EXISTS
      (SELECT *
       FROM answer a
       WHERE a.site_id = q.site_id
         AND a.question_id = q.id)
    AND site.site_name = 'stackoverflow'
    AND site.site_id = q.site_id
    AND pl.site_id = q.site_id
    AND pl.post_id_to = q.id
    AND tag.name = 'go'
    AND tag.site_id = q.site_id
    AND q.creation_date > date('2016-01-01')
    AND tq.site_id = tag.site_id
    AND tq.tag_id = tag.id
    AND tq.question_id = q.id
    AND q.owner_user_id = so_user.id
    AND q.site_id = so_user.site_id
    AND so_user.reputation > 126
    AND account.id = so_user.account_id
    AND account.website_url != '';