Query simplification

Question

Hi Gurus,
i am trying to get the result data(only one records based on multiple record combination) for the following query from only one table where combination presents in records, can any one help me making the following query to simple
SELECT   result0.routing_group_id
  FROM   (SELECT   routing_group_id, routing_rule_id
            FROM   workflow_routing_assoc
           WHERE   routing_rule_value = 'test-example') result0,
         (SELECT   routing_group_id, routing_rule_id
            FROM   workflow_routing_assoc
           WHERE   routing_rule_value = '12') result1,
         (SELECT   routing_group_id, routing_rule_id
            FROM   workflow_routing_assoc
           WHERE   routing_rule_value = 'sep') result2,
         (SELECT   routing_group_id, routing_rule_id
            FROM   workflow_routing_assoc
           WHERE   routing_rule_value = '2010') result3
WHERE       result0.routing_rule_id = 8
         AND result1.routing_rule_id = 5
         AND result2.routing_rule_id = 2
         AND result3.routing_rule_id = 9
         AND result0.routing_group_id = result1.routing_group_id
         AND result1.routing_group_id = result2.routing_group_id
         AND result2.routing_group_id = result3.routing_group_idThanks in advance
Parthiban Kumar

Answer 1

hi all,
Thanks for the strict yet kindfull information and i hope the following information will be sufficent .
Version: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
/* Formatted on 10/11/2011 6:54:19 PM (QP5 v5.126) */
CREATE TABLE workflow_routing_assoc
    wf_routing_assoc_id   NUMBER,                                 -- unique id
    routing_group_id      NUMBER,        -- common id for the four combination
    routing_rule_id       NUMBER, -- this column differnciates the information provided eg: date,day,month,year
    routing_rule_value    VARCHAR2 (50 BYTE), -- this column contains the information for the routing_rule_id(third column) eg: 01(date),wed(day),month(sep),year(2011)
    created_by            VARCHAR2 (50 BYTE),              --created user name
    created_date          timestamp (6),                        --created date
    modified_by           VARCHAR2 (50 BYTE),           -- modifying user name
    modified_date         timestamp (6)
)                                                              --modified date
INSERT INTO workflow_routing_assoc (wf_routing_assoc_id,
                                    routing_group_id,
                                    routing_rule_id,
                                    routing_rule_value)
  VALUES   (1,
            55,
            8,
            'test-example');
INSERT INTO workflow_routing_assoc (wf_routing_assoc_id,
                                    routing_group_id,
                                    routing_rule_id,
                                    routing_rule_value)
  VALUES   (2,
            55,
            5,
            '12');
INSERT INTO workflow_routing_assoc (wf_routing_assoc_id,
                                    routing_group_id,
                                    routing_rule_id,
                                    routing_rule_value)
  VALUES   (3,
            55,
            2,
            'sep');
INSERT INTO workflow_routing_assoc (wf_routing_assoc_id,
                                    routing_group_id,
                                    routing_rule_id,
                                    routing_rule_value)
  VALUES   (4,
            55,
            9,
            '2010');
COMMIT;
SQL> SELECT   result0.routing_group_id
  2    FROM   (SELECT   routing_group_id, routing_rule_id
  3              FROM   workflow_routing_assoc
  4             WHERE   routing_rule_value = 'test-example') result0,
  5           (SELECT   routing_group_id, routing_rule_id
  6              FROM   workflow_routing_assoc
  7             WHERE   routing_rule_value = '12') result1,
  8           (SELECT   routing_group_id, routing_rule_id
  9              FROM   workflow_routing_assoc
10             WHERE   routing_rule_value = 'sep') result2,
11           (SELECT   routing_group_id, routing_rule_id
12              FROM   workflow_routing_assoc
13             WHERE   routing_rule_value = '2010') result3
14   WHERE       result0.routing_rule_id = 8
15           AND result1.routing_rule_id = 5
16           AND result2.routing_rule_id = 2
17           AND result3.routing_rule_id = 9
18           AND result0.routing_group_id = result1.routing_group_id
19           AND result1.routing_group_id = result2.routing_group_id
20           AND result2.routing_group_id = result3.routing_group_id;
op:
ROUTING_GROUP_ID
              55parthiban kumar