Using Subquery in Select with Rollup (or some way to get grand total)

Question

I am trying to do the following (simplified the query):
SELECT s.SYSTEM,
(SELECT COUNT(cp1.cid) FROM cfrs cp1, systems sp1, subsystems ssp1 where cp1.priority = 'P1' AND cp1.subsystem = ssp1.subsystem AND sp1.system = ssp1.system AND sp1.system = s.system) AS P1
FROM cfrs c, systems s, subsystems ss
WHERE c.subsystem = ss.subsystem
AND s.system = ss.system
GROUP BY ROLLUP(s.SYSTEM)
But the result of the Rollup on the P1 column is always 0 (it is not summing it up)
How can I accomplish a Rollup (or get a grand total) of the subquery result?
Thanks,

Answer 1

How about this then:
SQL > WITH SYSTEMS AS
  2  (
  3     SELECT 'A' AS SYSTEM FROM DUAL UNION ALL
  4     SELECT 'B' AS SYSTEM FROM DUAL UNION ALL
  5     SELECT 'C' AS SYSTEM FROM DUAL
  6  ),
  7  SUBSYSTEMS AS
  8  (
  9     SELECT 'A' AS SYSTEM, '1' AS SUBSYSTEM FROM DUAL UNION ALL
10     SELECT 'A' AS SYSTEM, '2' AS SUBSYSTEM FROM DUAL UNION ALL
11     SELECT 'A' AS SYSTEM, '3' AS SUBSYSTEM FROM DUAL UNION ALL
12     SELECT 'B' AS SYSTEM, '4' AS SUBSYSTEM FROM DUAL UNION ALL
13     SELECT 'B' AS SYSTEM, '5' AS SUBSYSTEM FROM DUAL UNION ALL
14     SELECT 'B' AS SYSTEM, '6' AS SUBSYSTEM FROM DUAL UNION ALL
15     SELECT 'C' AS SYSTEM, '7' AS SUBSYSTEM FROM DUAL UNION ALL
16     SELECT 'C' AS SYSTEM, '8' AS SUBSYSTEM FROM DUAL UNION ALL
17     SELECT 'C' AS SYSTEM, '9' AS SUBSYSTEM FROM DUAL
18  ),
19  CFRS AS
20  (
21     SELECT 10 AS CID, '1' AS SUBSYSTEM, 'HIGH' AS PRIORITY FROM DUAL UNION ALL
22     SELECT 11 AS CID, '1' AS SUBSYSTEM, 'LOW' AS PRIORITY FROM DUAL UNION ALL
23     SELECT 12 AS CID, '1' AS SUBSYSTEM, 'MED' AS PRIORITY FROM DUAL UNION ALL
24     SELECT 13 AS CID, '2' AS SUBSYSTEM, 'HIGH' AS PRIORITY FROM DUAL UNION ALL
25     SELECT 14 AS CID, '2' AS SUBSYSTEM, 'MED' AS PRIORITY FROM DUAL UNION ALL
26     SELECT 15 AS CID, '2' AS SUBSYSTEM, 'HIGH' AS PRIORITY FROM DUAL UNION ALL
27     SELECT 16 AS CID, '3' AS SUBSYSTEM, 'LOW' AS PRIORITY FROM DUAL UNION ALL
28     SELECT 17 AS CID, '3' AS SUBSYSTEM, 'HIGH' AS PRIORITY FROM DUAL UNION ALL
29     SELECT 18 AS CID, '4' AS SUBSYSTEM, 'MED' AS PRIORITY FROM DUAL UNION ALL
30     SELECT 19 AS CID, '5' AS SUBSYSTEM, 'HIGH' AS PRIORITY FROM DUAL UNION ALL
31     SELECT 20 AS CID, '5' AS SUBSYSTEM, 'LOW' AS PRIORITY FROM DUAL UNION ALL
32     SELECT 21 AS CID, '6' AS SUBSYSTEM, 'HIGH' AS PRIORITY FROM DUAL UNION ALL
33     SELECT 31 AS CID, '7' AS SUBSYSTEM, 'LOW' AS PRIORITY FROM DUAL UNION ALL
34     SELECT 41 AS CID, '8' AS SUBSYSTEM, 'HIGH' AS PRIORITY FROM DUAL UNION ALL
35     SELECT 51 AS CID, '9' AS SUBSYSTEM, 'MED' AS PRIORITY FROM DUAL UNION ALL
36     SELECT 61 AS CID, '9' AS SUBSYSTEM, 'MED' AS PRIORITY FROM DUAL
37  )
38  SELECT DECODE(SYSTEM,'ALL_SYSTEMS','Grand Total',SYSTEM) AS SYSTEM
39  ,  MAX(DECODE(PRIORITY,'LOW',CNT,0))       AS LOW
40  ,  MAX(DECODE(PRIORITY,'MED',CNT,0))       AS MED
41  ,  MAX(DECODE(PRIORITY,'HIGH',CNT,0))      AS HIGH
42  ,  MAX(DECODE(PRIORITY,'ALL_PRIOR',CNT,0)) AS SYSTEM_TOTAL
43  FROM
44  (
45     SELECT DECODE(GROUPING(SYSTEMS.SYSTEM),1,'ALL_SYSTEMS',SYSTEMS.SYSTEM) AS SYSTEM
46     , DECODE(GROUPING(CFRS.PRIORITY),1,'ALL_PRIOR',CFRS.PRIORITY) AS PRIORITY
47     , COUNT(*) AS CNT
48     FROM SYSTEMS
49     JOIN SUBSYSTEMS ON SYSTEMS.SYSTEM = SUBSYSTEMS.SYSTEM
50     JOIN CFRS ON SUBSYSTEMS.SUBSYSTEM = CFRS.SUBSYSTEM
51     GROUP BY CUBE(SYSTEMS.SYSTEM,CFRS.PRIORITY)
52     ORDER BY SYSTEMS.SYSTEM, CFRS.PRIORITY
53  )
54  GROUP BY DECODE(SYSTEM,'ALL_SYSTEMS','Grand Total',SYSTEM)
55  ORDER BY DECODE(SYSTEM,'ALL_SYSTEMS','Grand Total',SYSTEM)
56  /
SYSTEM             LOW        MED       HIGH SYSTEM_TOTAL
A                    2          2          4            8
B                    1          1          2            4
C                    1          2          1            4
Grand Total          4          5          7           16Oh, BTW, use "code" wrapped in "{}" on either side to post nicely formatted code.