oracle create function 行转列

CREATE OR REPLACE FUNCTION IMSC.f_ca_res_landmark_condition ( p_eesrbaseinfo_uuid IN VARCHAR2)
RETURN VARCHAR2
IS
RESULT VARCHAR2 (200);

--根据UUID关联的里程碑相关性
CURSOR cs
IS
(SELECT d.eesrbaseinfo_uuid,
e.type_nm
|| '['
|| DECODE (d.landmark_value,
'0', '非',
'1', '关键',
'2', '重要',
'3', '一般'
)
|| ']' AS landmark_name
FROM imsc.me_landmark d
LEFT JOIN
(SELECT d.type_nm, d.type_id
FROM ims.type_code_d d LEFT JOIN ims.type_code_m me
ON (d.type_code_m_uuid = me.type_code_m_uuid)
WHERE me.type_cd = 'EESR_LANDMARK') e
ON (d.landmark_type = e.type_id) where d.eesrbaseinfo_uuid=p_eesrbaseinfo_uuid
);

cstype cs%ROWTYPE;
BEGIN
OPEN cs;

LOOP
FETCH cs
INTO cstype;

EXIT WHEN cs%NOTFOUND;

IF (p_eesrbaseinfo_uuid=cstype.eesrbaseinfo_uuid)
THEN
RESULT := RESULT || cstype.landmark_name || ',';
END IF;
END LOOP;

CLOSE cs;

IF (RESULT IS NOT NULL)
THEN
RESULT := SUBSTR (RESULT, 0, LENGTH (RESULT) - 1);
END IF;

RETURN (RESULT);
END f_ca_res_landmark_condition;
/
grant execute on imsc.f_ca_res_landmark_condition to imsw;

grant execute on imsc.f_ca_res_landmark_condition to imsr;