Listing 5: INTERSECT ALL Query
SELECT col1, col2
FROM (SELECT col1, col2, MIN(cnt) AS mincnt
      FROM (SELECT col1, col2, COUNT(*) AS cnt
            FROM U
            GROUP BY col1, col2
     
            UNION ALL
           
            SELECT col1, col2, COUNT(*)
            FROM V
            GROUP BY col1, col2) AS D1
      GROUP BY col1, col2
      HAVING COUNT(*) > 1) AS D2
  JOIN Nums
    ON n <= mincnt