oracle 将多条记录拼接成一个字符串

SELECT AJBH,
       --PARENTVALUE,
       LTRIM(SYS_CONNECT_BY_PATH(FPRY, ','), ',') VALUUES
  FROM (SELECT T.AJBH,
       NVL((SELECT a.yhxm FROM SWJCDB.Jc_Jl_Swjcryb a WHERE a.yhid=T.FPRY),T.FPRY) FPRY,
       (ROW_NUMBER() OVER(PARTITION BY AJBH ORDER BY SFZJRY DESC)) NUMID
  FROM SWJCDB.JC_JL_RYFPB T
  WHERE sshj='21')
 WHERE CONNECT_BY_ISLEAF = 1
 START WITH NUMID = 1
CONNECT BY NUMID - 1 = PRIOR NUMID
       AND AJBH = PRIOR AJBH;