Operator IN and variable string

Question

Hello,
I have this sentence sql (it is a example):
select p.pa_cod_proyecto, p.pa_tit_proyecto
from spa_pa.pa_proyecto p, spa_pa.pa_rel_proyecto_persona rel
and rel.pa_cod_proyecto (+)= p.pa_cod_proyecto
and (rel.pa_prlogin in (:p21_participantes))
when I execute it, I put in variable :p21_participante for example:
amrodrig,dagarcia
but not operate.
Can you help me?
Thank you. Reggards,
Amparo

Answer 1

SQL> VAR str VARCHAR2(200)
SQL> EXECUTE :str:='20,30'
PL/SQL procedure successfully completed.
SQL> SELECT ename,deptno FROM emp
  2  WHERE deptno IN
  3                (SELECT REGEXP_SUBSTR (:str, '[^,]+', 1, rownum)
  4                 FROM dual
  5                 CONNECT BY level <= LENGTH (REGEXP_REPLACE (:str, '[^,]+'))  + 1
  6                 );
ENAME          DEPTNO
BLAKE              30
JONES              20
SCOTT              20
FORD               20
SMITH              20
ALLEN              30
WARD               30
MARTIN             30
TURNER             30
ADAMS              20
JAMES              30
11 rows selected.
SQL> EXECUTE :str:='10,40,50';
PL/SQL procedure successfully completed.
SQL> SELECT ename,deptno FROM emp
  2  WHERE deptno IN
  3                (SELECT REGEXP_SUBSTR (:str, '[^,]+', 1, rownum)
  4                 FROM dual
  5                 CONNECT BY level <= LENGTH (REGEXP_REPLACE (:str, '[^,]+'))  + 1
  6                 );
ENAME          DEPTNO
KING               10
CLARK              10
MILLER             10
SQL>