ORA-01422

Question

hi
i am trying to create a function as follows
CREATE OR REPLACE FUNCTION T_NAME(PRD VARCHAR2,BR NUMBER)
RETURN VARCHAR2
IS
V_NAME VARCHAR2(50);
BEGIN
SELECT LONGNAME INTO V_NAME FROM ac_mast
WHERE TRIM(SUBSTR(PRD,1,8))=TRIM(SUBSTR(PRDACCTID,1,8))
AND LBRCODE=BR;
RETURN V_NAME;
END T_NAME;oracle creates it without any errors
but if i use the same in the below query
error is thrown by oracle (10g) as
ORA-01422: exact fetch returns more than requested number
select lbrcode,t_name(prdacctid,LBRCODE),cbldate,balance4,rnk from
(select bal_mast.*,rank() OVER(PARTITION BY LBRCODE,PRDACCTID ORDER BY CBLDATE DESC) AS RNK
FROM bal_mast
WHERE TRIM(SUBSTR(PRDACCTID,1,8))='PL'
AND CBLDATE<='31-MAR-2010'
AND FLOOR(SUBSTR(PRDACCTID,17,24))<>0
)WHERE RNK=1
ORDER BY LBRCODE,T_NAME(PRDACCTID,LBRCODE)
/However if i change *"WHERE TRIM(SUBSTR(PRD,1,8))=TRIM(SUBSTR(PRDACCTID,1,8))"* to
WHERE PRD=PRDACCTID
it works
Please explain.......
hemu

Answer 1

The error message tells it all:   SELECT LONGNAME
     INTO V_NAME
     FROM ac_mast
    WHERE TRIM(SUBSTR(PRD, 1, 8)) = TRIM(SUBSTR(PRDACCTID, 1, 8)) AND LBRCODE = BR;This query returns more than one record. SELECT INTO needs exactly one record, else it throws
TOO_MANY_ROWS.
Urs