How to return rows from tmp table created inside function??

Question

Hi,
I'm trying to return rows from a cursor or table (created within
the function). How do I specify the return type?

Answer 1

Hi,
Here is the code that examples to create a function that can
return data from table.This is achieved using REFCURSOR concept.
Hope this helps you.I'm giving all stuff in single PL/SQL
block.You can break it and create a package and declare
refcursor type and function in that as well.
DECLARE
-- Declare generic cursor type
TYPE gencur_type IS REF CURSOR ;
-- Declare generic cursor varaible
gencur gencur_type;
-- Declare record type
TYPE rec_type IS RECORD(descr emp.ename%type) ;
-- Declare record type variable
rec rec_type;
--This how you declare a local function that returns gencrtype
data set
--This function is called in main block
FUNCTION call_refcur return gencur_type
AS
          rr gencur_type;
BEGIN
     OPEN rr FOR SELECT descr FROM emp;
     RETURN rr;
END;-- end of local function
-- Main block begins here
BEGIN
-- Call the local function so that gencur will have
-- the data set returned by select statement
gencur:= call_refcur;
-- Open a loop to test the stuff
LOOP
     FETCH gencur INTO rec;
     EXIT WHEN gencur%NOTFOUND;
     null;
     dbms_output.put_line(rec.ename);
END LOOP;
END;
Regards,
Sridhar