实现字段以逗号连接，无字符长度限制

select
count(*)ct,

trim(both ',' from  sys.stragg(distinct to_char(T.FID) || nvl2(T.FID, ',',''))) d

from CP_ORDERLIFEHELP T group by T.FWORKERID

结果： ct d

1     23 

     2    33,55 

    5    666,777,333,444,23423