URGENT:DECODE

Question

I'm facing problem with this stored procedure.the decode function is not working properly.However the same select statement when compiled seperately works fine. i'm confused.Please help me out.
CREATE OR REPLACE PROCEDURE sp_sel_basis_list
(v_fund NUMBER,
R1 OUT PKG_SP_MAINT_MAIN.RF1)
AS
BEGIN
OPEN R1 FOR
SELECT TBASIS.BASISID,TBASIS.BASISCD,TBASIS.DESCRIPTION,
DECODE(TBASIS.BASISID,(SELECT DISTINCT TBASISFND.BASISID FROM TBASISFND WHERE FUNDID = v_fund AND TBASISFND.BASISID = TBASIS.BASISID ),'Y','N') SELECT_FLAG
FROM TBASIS;
END;
It would be nice if somebody can reply to this.
regards
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Answer 1

TRY:
SELECT TBASIS.BASISID,
TBASIS.BASISCD,
TBASIS.DESCRIPTION,
DECODE(fnd.BASISID,NULL,
'N','Y') SELECT_FLAG
FROM TBASIS,
(SELECT DISTINCT BASISID
FROM TBASISFND
WHERE FUNDID = v_fund) fnd
WHERE TBASIS.BASISID = fnd.BASISID (+) ;
OR
SELECT T.BASISID,
T.BASISCD,
T.DESCRIPTION,
'N' SELECT_FLAG
FROM TBASIS t
WHERE NOT EXISTS
(SELECT 1
FROM TBASISFND
WHERE FUNDID = v_fund
AND BASIS_ID = t.BASIS_ID)
UNION
SELECT T.BASISID,
T.BASISCD,
T.DESCRIPTION,
'Y' SELECT_FLAG
FROM TBASIS t
WHERE EXISTS
(SELECT 1
FROM TBASISFND
WHERE FUNDID = v_fund
AND BASIS_ID = t.BASIS_ID) ;
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