How to write REF-CURSOR Query in Oracle Reports

Question

Hello Guys!!
I have a form in which you can select regions/divisions/locations etc by the use of check boxes. And the selected values will be inserted into a table, and based on the selected values of the table the report is run.
The issue I have is with the query inside the Oracle reports(attached to this file).
The query works fine until the last two EXISTS conditions.
IF a region exists In the table report_param then it works fine but if there are no divisions in it , then the query returns no values, which is not correct.
Someone has advised me to use a ref-cursor query inside reports tool, which I am not aware off. So, anykind of suggestions or advises are welcome. Please let me know about it as it is very urgent issue for me. Anykind of help would be greatly
appreciated.
Thanks,
Vishal
-------------------------------------------------------Query in Oracle Reports---------------------------------------------------------
select c.key_segment, p.supplier_id,
decode(:in_col_nm, 'BRAND',nvl(p.product_brand,'<Unknown Brand>'), 'PLN',nvl(p.product_legal_name,'<Unknown Legal Name>')) COL_NM,
sum(a.ext_price) sales_dols,
sum(comp_allow_pkg.get_comp_allow_stddiv(a.control_loc_id, a.product_id, a.sold_to_customer_id,
a.doc_dt, a.ext_price, a.units)) cust_reb_dols,
sum(a.units) units,
sum(a.ext_cost) cost_dols
from sales a, key_segment_plns c, product p, rep_wrtr_dw_cust h
where a.doc_dt between :in_start_dt and :in_end_dt
and a.customer_oc = h.control_loc_id
and a.sold_to_customer_id = h.sold_to_cust_id
and a.ship_to_customer_id = h.ship_to_cust_id
and ((:in_dg_cd = 'B' and h.dealer_grower_cd in ('D','G')) or h.dealer_grower_cd = :in_dg_cd)
and a.product_id = p.product_id
and p.product_gl_class_cd = 'CHEM'
and p.product_legal_name = c.product_legal_name
and c.key_segment in ('GLYPHOSATE','PLANT HEALTH/RUST FUNGICIDES','PYRETHROIDS','STROBI FUNGICIDES')--&IN_KEY_SEGMENTS
-- and (:in_oc = 'ALL' or (a.control_loc_id in (select control_loc from control_loc_comb_ocs where control_loc_comb = :in_oc)))
-- SALES DATA FILTERS TO MATCH ACCUM_SALES_DG_MV
and a.sale_type_cd in ('02','08')
and a.document_type_cd in ('I','C','D')
and (substr(a.product_id,-1) in ('0','1') OR nvl(upper(trim(p.product_brand)),'X') = 'TECH FEE')
and a.units <> 0
and a.unit_cost <> 0
and a.unit_price <> 0
-- NEW FILTERS ADDED 9/11/07: LOCATION(BRANCH), BUSINESS TYPE, RSM/ASM/REP
and ((:in_loc = 'ALL') or (nvl(a.warehouse_id,'<blank>') in (SELECT param_value
FROM report_param
WHERE report_id = :IN_REPORT_ID
AND session_id= :IN_SESSION_ID
AND USER_ID = :IN_USER_ID
AND param_name='LOCATION_TYPE')))
and ((:in_uhs_ag = 'ALL') or (:in_uhs_ag = 'NA' and p.product_uhs_ag != 'A') or (p.product_uhs_ag = :in_uhs_ag))
and ((:in_sales_rep = 'ALL') or (nvl(a.territory_id,'<blank>') in (SELECT param_value
FROM report_param
WHERE report_id = :IN_REPORT_ID
AND session_id= :IN_SESSION_ID
AND USER_ID = :IN_USER_ID
AND param_name='SALES_REP_TYPE')))
and EXISTS
(SELECT '1'
FROM locations l, report_param rp
WHERE rp.report_id = :IN_REPORT_ID
AND rp.session_id= :IN_SESSION_ID
AND rp.user_id = :IN_USER_ID
AND rp.param_value = l.region
AND rp.param_name = 'REGION_TYPE'
AND a.warehouse_id = L.ARS_LOCATION)
and EXISTS
(SELECT '1'
FROM locations l, report_param rp
WHERE rp.report_id = :IN_REPORT_ID
AND rp.session_id= :IN_SESSION_ID
AND rp.user_id = :IN_USER_ID
AND rp.param_value = l.region
AND rp.param_name = 'DIVISION_TYPE'
AND a.warehouse_id = L.ARS_LOCATION)
group by c.key_segment, P.supplier_id,
decode(:in_col_nm, 'BRAND',nvl(p.product_brand,'<Unknown Brand>'), 'PLN',nvl(p.product_legal_name,'<Unknown Legal Name>'))

Answer 1

Hi,
I need your help to create a report using Ref-Cursor. please see the below thread
Report using ref cursor or dynamic Sql