Function using "sql in" in select

Question

hi all...
I need a function that takes in a param that is a string of employee types. I can't figure out how to pass the comma delineated string to the function. something like "Manager","Director","Analyst".
CREATE or REPLACE....
FUNCTION findEmployeesByType(a_employee_types VARCHAR2) return reportref_type
IS
return_cur reportref_type;
l_sql varchar2(4000) :=
'select last_name, first_name, ssn
from employee
where employee_type in (:p_employee_types)'
END packageName;
the same query would be:
select last_name, first_name, ssn
from employee
where employee_type in ("Manager","Director","Analyst")
thanks..

Answer 1

thanks for the help. I doing this inside a package. I created the type outside the package declaration...
CREATE OR REPLACE TYPE mytabletype IS TABLE OF VARCHAR2 (255);
Then I created a new function within the package:
FUNCTION getList(p_string VARCHAR2) RETURN mytabletype;
When I try to call getList from another function, I'm getting an 'Invalid Identifier' for the string that's passed in.
Here's my function definition:
FUNCTION getPendingPmtsByTrial (a_trial_id NUMBER,
a_trialparty_id NUMBER DEFAULT NULL,
a_partyroles VARCHAR2 DEFAULT NULL) RETURN reportref_type
Then I make the call to the getList function as follows:
AND trialparty.partyrole_code IN (select cast (report.getList(a_partyroles) as mytabletype) from dual)
ideas ?...thanks
here's my getList function:
FUNCTION getList ( p_string IN VARCHAR2 ) RETURN mytabletype
IS
l_string LONG DEFAULT p_string || ',';
l_data mytabletype := mytabletype();
n NUMBER;
BEGIN
LOOP
EXIT WHEN l_string IS NULL;
n := INSTR(l_string, ',');
l_data.EXTEND;
l_data(l_data.COUNT) := TRIM(SUBSTR(l_string, 1, n-1));
l_string := SUBSTR(l_string, n + 1);
END LOOP;
RETURN l_data;
END;