passing sys_refcursor from function to sys_refcursor out parameter in procedure - sql

Question

I have problem with outputting results from the sys_refcursor returned from the function stored in the variable crs_scenarios. I then want to pass this collection of data to the output parameter pout_result. I get the error PLS-00487: Invalid reference to variable 'POUT_RESULT'. Can you advise me please, how to solve this issue?
Thanks a lot!
declare
pin_scenarioName scenarios.scen_name%TYPE := 'zz_berlin_testen';
pin_scenarioRegion inf_ausbaugebiete.ausg_name%TYPE DEFAULT NULL;
pin_scenarioCutOffDate scenarios.scen_cut_off_date%TYPE DEFAULT NULL;
pin_scenarioStatus scenario_status.scst_name%TYPE DEFAULT NULL;
pout_result SYS_REFCURSOR;
pout_strerrorcode VARCHAR2(1000);
pout_strerrormessage VARCHAR2(1000);
BEGIN
pout_result := funk30.pbi$capi_export_pck.cfn_getscenarios(pin_scenarioName => pin_scenarioName,
pin_scenarioRegion => pin_scenarioRegion,
pin_scenarioCutOffDate => pin_scenarioCutOffDate,
pin_scenarioStatus => pin_scenarioStatus,
pout_strerrorcode => pout_strerrorcode,
pout_strerrormessage => pout_strerrormessage);
dbms_output.put_line(pout_result.ID || ' ' ||pout_result.NAME || ' ' ||pout_result.CUT_OFF || ' ' ||pout_result.STATUS ||
' ' || pout_result.PRIORITY || ' ' ||pout_result.PARENT_SCENARIO|| ' ' ||pout_result.REGION|| ' ' || pout_result.REMARK);
END cpr_getscenarios;
Function:
FUNCTION mfn_getscenarios(pin_scenarioName IN scenarios.scen_name%TYPE DEFAULT NULL,
pin_scenarioRegion IN inf_ausbaugebiete.ausg_name%TYPE DEFAULT NULL,
pin_scenarioCutOffDate IN scenarios.scen_cut_off_date%TYPE DEFAULT NULL,
pin_scenarioStatus IN scenario_status.scst_name%TYPE DEFAULT NULL,
pout_strerrorcode OUT VARCHAR2,
pout_strerrormessage OUT VARCHAR2)
RETURN SYS_REFCURSOR IS
crs_scenarios SYS_REFCURSOR;
n_cnt_exists NUMBER;
ex_scennotexists EXCEPTION;
strprocedurename VARCHAR2(128) := package_name || '.mfn_getScenarios';
BEGIN
BEGIN
SELECT 1 INTO n_cnt_exists FROM scenarios WHERE rownum = 1;
EXCEPTION
WHEN no_data_found THEN
RAISE ex_scennotexists;
END;
OPEN crs_scenarios FOR
SELECT scen.scen_id id,
scen.scen_name NAME,
scen.scen_cut_off_date cut_off,
scst.scst_name STATUS,
scen.scen_priority PRIORITY,
parent.scen_name PARENT_SCENARIO,
ausg.ausg_name REGION,
scen.scen_comment REMARK
FROM scenarios scen,
scenarios parent,
scenario_status scst,
inf_ausbaugebiete ausg
WHERE scen.scen_scst_id = scst.scst_id
AND scen.scen_parent_scen_id = parent.scen_id(+)
AND scen.scen_ausg_id= ausg.ausg_id(+)
AND lower(scen.scen_name) like nvl(lower('%'||pin_scenarioName||'%'), lower(scen.scen_name))
AND NVL(ausg.ausg_name, 'xxxxx') = nvl(pin_scenarioRegion, NVL(ausg.ausg_name, 'xxxxx'))
AND scen.scen_cut_off_date = nvl(pin_scenarioCutOffDate, scen.scen_cut_off_date)
AND scst.scst_name = nvl(pin_scenarioStatus, scst.scst_name);
pout_strerrorcode := '0';
pout_strerrormessage := '';
RETURN crs_scenarios;
EXCEPTION
WHEN ex_scennotexists THEN
pout_strerrorcode := 'API-00239';
pout_strerrormessage := rtrim(api_err_pck.apierrormsg('API-00239', strprocedurename), ' #');
RETURN NULL;
WHEN OTHERS THEN
pout_strerrorcode := '-1';
pout_strerrormessage := substr(SQLERRM, instr(SQLERRM, 'ORA') + 11, length(SQLERRM));
RETURN NULL;
END mfn_getscenarios;

Answer 1

Sys_refcursor is only a SQL definition. If you want to run it, you have to FETCH data.
So pout_result varible has no data itself.
-------- function -----
create or replace FUNCTION mfn
RETURN SYS_REFCURSOR IS
crs_scenarios SYS_REFCURSOR;
BEGIN
OPEN crs_scenarios FOR
SELECT dummy from dual;
RETURN crs_scenarios;
END ;
-- execution
set serveroutput on
declare
pout_result SYS_REFCURSOR;
type pout_result_tab is table of dual%rowtype; -- cursor datatype
pout_result_t pout_result_tab;
BEGIN
pout_result := mfn;
fetch pout_result bulk collect into pout_result_t; -- bulk collect because I assume you have recordset, not one record
dbms_output.put_line(pout_result_t(1).dummy);
END ;
/
--- Result
X
PL/SQL procedure successfully completed.