text: SELECT 
      CASE
          WHEN age BETWEEN 0 AND 10 THEN '[0-10]'
          WHEN age BETWEEN 11 AND 20 THEN '[11-20]'
          WHEN age BETWEEN 21 AND 30 THEN '[21-30]'
          WHEN age BETWEEN 31 AND 40 THEN '[31-40]'
          WHEN age BETWEEN 41 AND 50 THEN '[41-50]'
          WHEN age BETWEEN 51 AND 60 THEN '[51-60]'
          WHEN age > 60 THEN '[61+]'
      END AS age_group,
      COUNT(id) AS wizard_count
  FROM
      wizzard_deposits
  GROUP BY age_group
  ORDER BY age_group