SQL Statement ignored - plsql

Question

I am writing this code in SQL and getting the following error:
LINE/COL ERROR
-------- -----------------------------------------------------------------
7/2 PL/SQL: SQL Statement ignored
Statement:
CREATE OR REPLACE FUNCTION GET_C_O(vretail_outlet_id int,
vtran_year varchar)
RETURN number
AS
stock number;
BEGIN
select vretail_outlet_id,
SUM(GET_C_O_STOCKFN_TEST(61, a.BATCHID, 1,
to_date('204-04-01','yyyy-mm-dd'),
vretail_outlet_id, vtran_year, 1) * QP.PRODUCTRATE) AS OPENING
From Promas
inner join Product A
on Promas.Pcode = A.Pcode and
vretail_outlet_id = A.Retail_outlet_id and
vtran_year = a.tran_year
inner Join QryProductrate Qp
on Qp.batchid = a.batchid and
QP.Retail_outlet_id = a.REtail_outlet_id and
Qp.Tran_year = a.tran_year
where a.tran_year = '2014_2015' and
1=1
group by vretail_outlet_id)
into stock
from dual;
Return Stock;
END;

Answer 1

The SELECT statement is not correct. Try:
select SUM(GET_C_O_STOCKFN_TEST(61, a.BATCHID, 1,
to_date('2014-04-01','yyyy-mm-dd'),
vretail_outlet_id, vtran_year, 1) * QP.PRODUCTRATE) AS OPENING
into stock
From Promas
inner join Product A
on Promas.Pcode = A.Pcode and
vretail_outlet_id = A.Retail_outlet_id and
vtran_year = a.tran_year
inner Join QryProductrate Qp
on Qp.batchid = a.batchid and
QP.Retail_outlet_id = a.REtail_outlet_id and
Qp.Tran_year = a.tran_year
where a.tran_year = '2014_2015';
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