how to make an outer join with the calling of other procedure - sql

Question

I have a stored procedure :
procedure qr_get_dep_boss(...,...)
takes two params(year, main_code) and returning one record the boss_num and his name .
I want to create another procedure and make a loop on the previous procedure calling , making an outer join with the result of another query
SELECT
year,
main_code,
name,
CASE
WHEN father_code in(-1) THEN NULL
ELSE father_code
END AS father_code,main_code || '_' || year AS main_id,
(SELECT COUNT(*)
FROM sm_r_build
WHERE father_code = sc.main_code
AND year = (SELECT MAX(year)
FROM st_quit_info)) childcount,
main_code||'_'|| father_code AS serial
FROM sm_r_build sc
WHERE year=(SELECT MAX(year)FROM st_quit_info)
So I want the result:
year,main_code,name,father_code,main_id,childcount,serial,boss_num,boss_name
I try this :
create procedure new_get_alldepwithboss()
returning int as year , int as main_code ,nvarchar(100) as name,int as father_code,nvarchar(255) as main_id,int as childcount,int as ll_boss_num,nvarchar(100) as ll_boss_name
define ll_year int;
define ll_main_code int;
define ll_name nvarchar(100);
define ll_father_code int;
define ll_main_id nvarchar(255) ;
define ll_childcount int;
define ll_boss_num int;
define ll_boss_name nvarchar(100);
foreach
SELECT year,main_code,name,CASE WHEN father_code in(-1) THEN NULL ELSE father_code END AS father_code,main_code || '_' || year AS main_id, (SELECT COUNT(*)
FROM sm_r_build
WHERE father_code=sc.main_code AND year= (SELECT MAX(year)
FROM st_quit_info)) childcount ,a.emp_num,a.emp_name
INTO ll_year ,ll_main_code,ll_name ,ll_father_code ,ll_main_id ,ll_childcount ,ll_boss_num,ll_boss_name
FROM sm_r_build sc , TABLE(FUNCTION qr_get_dep_boss(ll_main_code, ll_year))AS a(emp_num,emp_name)
WHERE year=(SELECT MAX(year)FROM st_quit_info)
return ll_year , ll_main_code, ll_name,ll_father_code,ll_main_id, ll_childcount , ll_boss_num,ll_boss_name with resume;
end foreach
end procedure
but in vain !

Answer 1

In case of SQL server I would recommend using rather function than store procedure. Header of function should look:
CREATE FUNCTION qr_get_dep_boss( #year DATE, #main_code INT)
RETURN #t TABLE ( boss_num INT, boss_name VARCHAR(50))
AS
... ( here boss_num and boss_name should be set )
In your main query you can use this function by:
SELECT year, main_code, ... , t.bos_num , t.boss_name
FROM ...
CROSS APPLY
qr_get_dep_boss(year, main_code) t
But I am not sure if it is possible in Informix, in case not you can always define two functions that returns single value. GL!

Answer 2

If I understand right, you don't need the second procedure.
What you need to do is use the RETURN xxx WITH RESUME into the procedure qr_get_dep_boss()
A example copied from the manual .
CREATE FUNCTION series (limit INT, backwards INT) RETURNING INT;
DEFINE i INT;
FOR i IN (1 TO limit)
RETURN i WITH RESUME;
END FOR;
IF backwards = 0 THEN
RETURN;
END IF;
FOR i IN (limit TO 1 STEP -1)
RETURN i WITH RESUME;
END FOR;
END FUNCTION; -- series