Dynamic Case Expression

Question

select  count(*)
  from  vwsr_all_merged_data s
where  sr_tio_priority in ('Level 0','CEO','TER','Priority Assistance','Enquiry')
   and  sr_status = 'Open'
   and  SR_BUS_UNIT IN ('Business Support and Improvement','Finance and Administration','Cust Sat Simplification and Productivity','Project New and Customer Experience','Corp Strategy and Customer Experience','Other')
  COUNT(*)
       126the same should be possible dynamically with Case expression ,before that i create the string as
SELECT
     CASE
        WHEN :name = 'BS&I' THEN ('('||''''||'Business Support and Improvement'||''''||','||''''||'Finance and Administration'||','||''''||'Cust Sat Simplification and Productivity'
                          ||''''||','||''''||'Project New and Customer Experience'||''''||','||''''||'Corp Strategy and Customer Experience'||''''||','||''''||'Other'||''''||')')
         ELSE null
     END 
FROM dual
CASEWHEN:NAME='BS&I'THEN('('||''''||'BUSINESSSUPPORTANDIMPROVEMENT'||''''||','||
('Business Support and Improvement','Finance and Administration,'Cust Sat Simplification and Productivity','Project New and Customer Experience','Corp Strategy and Customer Experience','Other')
SQL> var name varchar2(10)
SQL> exec :name:='BS&I'
PL/SQL procedure successfully completed.the same string query i put here within subquery to make above string , it does not work.
select  count(*)--sr_bus_unit,count(trunc(sr_open_date))
  from  vwsr_all_merged_data s
where  sr_tio_priority in ('Level 0','CEO','TER','Priority Assistance','Enquiry')
   and  sr_status = 'Open'
   and  SR_BUS_UNIT IN
              (   SELECT
                    CASE
                       WHEN :name = 'BS&I' THEN ('('||''''||'Business Support and Improvement'||''''||','||''''||'Finance and Administration'||','||''''||'Cust Sat Simplification and Productivity'
                          ||''''||','||''''||'Project New and Customer Experience'||''''||','||''''||'Corp Strategy and Customer Experience'||''''||','||''''||'Other'||''''||')')
                   ELSE null
               END 
                        FROM dual
COUNT(*)--SR_BUS_UNIT,COUNT(TRUNC(SR_OPEN_DATE))
                                               0Edited by: user13653962 on 24/01/2013 17:09
Edited by: user13653962 on 24/01/2013 17:10

Answer 1

No man , it is still no working , anyhow i really appreciate yours help , yours help drive me to find other way and you contributed 70% to achieve the result. Next query worked.
SQL> SET DEFINE OFF;
SQL> 
SQL> SELECT COUNT (*)
  2    FROM vwsr_all_merged_data s
  3   WHERE     sr_tio_priority IN
  4                ('Level 0', 'CEO', 'TER', 'Priority Assistance', 'Enquiry')
  5         AND sr_status = 'Open'
  6         AND SR_BUS_UNIT IN
  7                ('Business Support and Improvement',
  8                 'Finance and Administration',
  9                 'Cust Sat Simplification and Productivity',
10                 'Project New and Customer Experience',
11                 'Corp Strategy and Customer Experience',
12                 'Other')
13  UNION ALL
14  SELECT COUNT (*)                      --sr_bus_unit,count(trunc(sr_open_date))
15    FROM vwsr_all_merged_data s
16   WHERE     sr_tio_priority IN
17                ('Level 0', 'CEO', 'TER', 'Priority Assistance', 'Enquiry')
18         AND sr_status = 'Open'
19         AND SR_BUS_UNIT IN
20                (SELECT CASE
21                           WHEN 'BS&I' = 'BS&I'
22                           THEN
23                              (   ''''
24                               || 'Business Support and Improvement'
25                               || ''''
26                               || ','
27                               || ''''
28                               || 'Finance and Administration'
29                               || ''''
30                               || ','
31                               || ''''
32                               || 'Cust Sat Simplification and Productivity'
33                               || ''''
34                               || ','
35                               || ''''
36                               || 'Project New and Customer Experience'
37                               || ''''
38                               || ','
39                               || ''''
40                               || 'Corp Strategy and Customer Experience'
41                               || ''''
42                               || ','
43                               || ''''
44                               || 'Other'
45                               || '''')
46                           ELSE
47                              NULL
48                        END
49                   FROM DUAL)
50 
SQL> 
SQL>
SQL> /
  COUNT(*)
       126
         0Second Query
SQL> var name varchar2(10)
SQL> exec :name:='BS&I'
PL/SQL procedure successfully completed.
SQL> set define off
SQL> SELECT COUNT (*)                      --sr_bus_unit,count(trunc(sr_open_date))
  2    FROM vwsr_all_merged_data s
  3   WHERE     sr_tio_priority IN
  4                ('Level 0', 'CEO', 'TER', 'Priority Assistance', 'Enquiry')
  5         AND sr_status = 'Open'
  6         AND SR_BUS_UNIT IN
  7                (SELECT CASE
  8                           WHEN :NAME = 'BS&I'
  9                           THEN
10                              ('Business Support and Improvement')
11                           ELSE
12                              NULL
13                        END
14                 FROM DUAL
15                UNION
16                SELECT  CASE
17                 WHEN :NAME = 'BS&I'
18                           THEN
19                              ('Finance and Administration')
20                           ELSE
21                              NULL
22         END
23                   FROM DUAL
24                UNION
25                SELECT  CASE
26                 WHEN :NAME = 'BS&I'
27                           THEN
28                              ('Cust Sat Simplification and Productivity')
29                           ELSE
30                              NULL
31         END
32                 FROM DUAL
33                UNION
34                SELECT  CASE
35                 WHEN :NAME = 'BS&I'
36                           THEN
37                              ('Project New and Customer Experience')
38                           ELSE
39                              NULL
40         END
41                 FROM DUAL
42                UNION
43                SELECT  CASE
44                 WHEN :NAME = 'BS&I'
45                           THEN
46                              ('Corp Strategy and Customer Experience')
47                           ELSE
48                              NULL
49         END
50                 FROM DUAL
51                UNION
52                SELECT  CASE
53                 WHEN :NAME = 'BS&I'
54                           THEN
55                              ('Other')
56                           ELSE
57                              NULL
58         END
59                 FROM DUAL
60  )
61  /
COUNT(*)--SR_BUS_UNIT,COUNT(TRUNC(SR_OPEN_DATE))
                                             126
SQL>