相关列上不能指定外连接

an outer join cannot be specified on a correlation column

select
(
   select nvl(sum(p.settle_pq),0)
          from pub_e_pq_amt p
           where
           p.prc_code != '00000000'
           and p.rcvbl_amt_id > 0
           and p.line_id=gl.line_id(+)
  ) as 用户用电量

from g_line