Passing comma separated string

Question

1) This query works
select a.GSDB_SITE_CODE
from GFSTQ75_GSDB_SITE a
where a.IS_ASSEMBLY_PLANT_FLAG = 'Y'
and a.EFFECTIVE_OUT_DTS = '31-DEC-9999'
and a.ISO3_COUNTRY_CODE IN ('RUS','AUS','SA')
2) This query not working
select a.GSDB_SITE_CODE
from GFSTQ75_GSDB_SITE a
where a.IS_ASSEMBLY_PLANT_FLAG = 'Y'
and a.EFFECTIVE_OUT_DTS = '31-DEC-9999'
and a.ISO3_COUNTRY_CODE IN (SELECT value_text from GFSTU25_PARAMETER_VALUE
WHERE proj_acronym_code = 'CPM'
AND parameter_code ='W130'
AND parameter_qualifier_code='EU_COUNTRY_CODE3')
0 records
But the value_text returned is 'RUS','AUS','SA' from the below query.
SELECT value_text from GFSTU25_PARAMETER_VALUE
WHERE proj_acronym_code = 'CPM'
AND parameter_code ='W130'
AND parameter_qualifier_code='EU_COUNTRY_CODE3'
thanks,
vinodh

Answer 1

Try this way.
SELECT a.GSDB_SITE_CODE
  FROM GFSTQ75_GSDB_SITE a
WHERE a.IS_ASSEMBLY_PLANT_FLAG = 'Y'
   AND a.EFFECTIVE_OUT_DTS = '31-DEC-9999'
   AND a.ISO3_COUNTRY_CODE IN (SELECT REGEXP_SUBSTR (value_text, '[^,]+', 1, LEVEL)
                                 FROM (SELECT value_text
                                         FROM GFSTU25_PARAMETER_VALUE
                                        WHERE proj_acronym_code = 'CPM'
                                          AND parameter_code ='W130'
                                          AND parameter_qualifier_code='EU_COUNTRY_CODE3')
                                          CONNECT BY LEVEL <= regexp_count(value_text,',')+1)some sample check done on SCOTT schema.
SQL> SELECT *
     FROM emp
     WHERE deptno IN (SELECT REGEXP_SUBSTR ('10,20', '[^,]+', 1, LEVEL)
                        FROM dual
                        CONNECT BY LEVEL <= regexp_count('10,20',',')+1)
EMPNO ENAME      JOB         MGR HIREDATE          SAL      COMM DEPTNO
7369 SMITH      CLERK      7902 17/12/1980     800.00    200.00     20 
7566 JONES      MANAGER    7839 02/04/1981    2975.00    200.00     20 
7782 CLARK      MANAGER    7839 09/06/1981    2450.00               10 
7788 SCOTT      ANALYST    7566 19/04/1987    3000.00               20 
7839 KING       PRESIDENT                     5000.00               10 
7876 ADAMS      CLERK      7788 23/05/1987    1100.00               20 
7902 FORD       ANALYST    7566 03/12/1981    3000.00               20 
7934 MILLER     CLERK      7782 23/01/1982    1300.00               10 
8 rows selectedRegards,
Lokanath Giri
Edited by: Lokanath Giri on १६ मार्च, २०१२ ६:३१ अपराह्न