Problem query inside a function

Question

Hi,
I'm trying to create a function that returns me a value after I pass 2 input parameters, a number and a string.
I've written the function in this way:
create or replace PACKAGE BODY WORKFLOW_STATISTICS AS
FUNCTION JOB_MEAN_TIME(workflowID IN NUMBER, object_type IN VARCHAR2) RETURN NUMBER
IS
MEAN_TIME NUMBER;
BEGIN
DBMS_OUTPUT.PUT_LINE('WORKFLOW_ID: ' || WORKFLOWID);
select round((avg(b.endtime-b.starttime)/1000), 3) INTO MEAN_TIME
from DPCTPFSGAIATOOLSWBJOB b, dpctwbjobmanagementinfo d
where b.dataspectext like '%'||object_type || '%'
and d.jobid=b.id
and d.workflowid=workflowID;
RETURN MEAN_TIME;
END JOB_MEAN_TIME;
END WORKFLOW_STATISTICS; The package is compliled correctly but I have 2 problems:
1) the MEAN_TIME value retrned is not correct
2) DBMS_OUTPUT.PUT_LINE does not write anything.
For the point 1 I think I make a mistake when I write this claluse:
b.dataspectext like '%'||object_type || '%' (e.g I try to obtain '%AstrObservation%' if object_type is "AstroObservation")
For the point 2 I think I forget to set something.
Could someone help me?
Thanks a lot, bye bye.

Answer 1

Abdujaparov wrote:
Hi,
I'm trying to create a function that returns me a value after I pass 2 input parameters, a number and a string.
I've written the function in this way:
create or replace PACKAGE BODY WORKFLOW_STATISTICS AS
FUNCTION JOB_MEAN_TIME(workflowID IN NUMBER, object_type IN VARCHAR2) RETURN NUMBER
IS
MEAN_TIME NUMBER;
BEGIN
DBMS_OUTPUT.PUT_LINE('WORKFLOW_ID: ' || WORKFLOWID);
select round((avg(b.endtime-b.starttime)/1000), 3) INTO MEAN_TIME
from DPCTPFSGAIATOOLSWBJOB b, dpctwbjobmanagementinfo d
where b.dataspectext like '%'||object_type || '%'
and d.jobid=b.id
and d.workflowid=workflowID;
RETURN MEAN_TIME;
END JOB_MEAN_TIME;
END WORKFLOW_STATISTICS; The package is compliled correctly but I have 2 problems:
1) the MEAN_TIME value retrned is not correct
2) DBMS_OUTPUT.PUT_LINE does not write anything.
For the point 1 I think I make a mistake when I write this claluse:
b.dataspectext like '%'||object_type || '%' (e.g I try to obtain '%AstrObservation%' if object_type is "AstroObservation")
For the point 2 I think I forget to set something.
Could someone help me?
Thanks a lot, bye bye.SQL must be static at compile time.