Help on summing data

Question

I have below two tables:
         Table A
          col1 col2
          1     10
          1     10
          1     10
          Table b
          Col1 col2
          1    20
          Desired output:
          a.col1 sum(a.col2),sum(b.col2)
          1     30          20Please help..
Edited by: [email protected] on Apr 28, 2010 12:37 AM

Answer 1

Here is a try with full outer join:
SQL> WITH A AS (SELECT 1 col1, 10 col2 FROM DUAL UNION ALL
  2             SELECT 1 col1, 10 col2 FROM DUAL UNION ALL
  3             SELECT 1 col1, 10 col2 FROM DUAL UNION ALL
  4             SELECT 2 col1, 40 col2 FROM DUAL UNION ALL
  5             SELECT 4 col1, 140 col2 FROM DUAL),
  6       B AS (SELECT 1 col1, 10 col2 FROM DUAL UNION ALL
  7             SELECT 1 col1, 10 col2 FROM DUAL UNION ALL
  8             SELECT 2 col1, 50 col2 FROM DUAL UNION ALL
  9             SELECT 2 col1, 50 col2 FROM DUAL UNION ALL
10             SELECT 3 col1, 150 col2 FROM DUAL)
11  -- End of sample data
12  SELECT   NVL(s_a.col1, s_b.col1) AS col1, sum_a, sum_b
13      FROM (SELECT   col1, SUM(col2) AS sum_a
14                FROM a
15            GROUP BY col1) s_a
16           FULL OUTER JOIN
17           (SELECT   col1, SUM(col2) AS sum_b
18                FROM b
19            GROUP BY col1) s_b ON s_a.col1 = s_b.col1
20  ORDER BY 1;
      COL1      SUM_A      SUM_B
         1         30         20
         2         40        100
         3                   150
         4        140Urs