查询时出现ora-00980:同义词转换不再有效,该怎么处理

with tmp_a as(select distinct nvl(m.rdate, n.rdate),        max(case when m.rdate=n.rdate and m.userlevel = n.userlevel then m.rcnt_2+n.rcnt_2 else m.rcnt_2 end) "总数高级",        max(case when m.rdate=n.rdate and m.userlevel = n.userlevel then m.rcnt_1+n.rcnt_1 else m.rcnt_1 end) "总数初级"   from(select to_char(to_date(logindate,'yyyy-mm-dd hh24:mi:ss'),'yyyy-mm-dd') rdate,               userlevel,               count(decode(userlevel,10,1)) rcnt_1,               count(decode(userlevel,11,1)) rcnt_2          from ta          where userlevel in(10,11)         group by userlevel, to_char(to_date(logindate,'yyyy-mm-dd hh24:mi:ss'),'yyyy-mm-dd')       )m,      (select to_char(to_date(logindate,'yyyy-mm-dd hh24:mi:ss'),'yyyy-mm-dd') rdate,              userlevel,              count(decode(userlevel,10,1)) rcnt_1,              count(decode(userlevel,11,1)) rcnt_2         from tc n         where userlevel in(10,11)        group by userlevel, to_char(to_date(logindate,'yyyy-mm-dd hh24:mi:ss'),'yyyy-mm-dd')       )n  group by nvl(m.rdate, n.rdate)),tmp_b as(select to_char(to_date(logindate,'yyyy-mm-dd hh24:mi:ss'),'yyyy-mm-dd') rdate,       count(decode(userlevel,10,1)) rcnt_1,       count(decode(userlevel,11,1)) rcnt_2  from tb  where userlevel in(10,11)  group by to_char(to_date(logindate,'yyyy-mm-dd hh24:mi:ss'),'yyyy-mm-dd') )select nvl(a.rdate,b.rdate) "时间",       nvl(a.rcnt_2,0) "开户高级",       nvl(a.rcnt_1,0) "开户初级",       nvl(b.rcnt_2,0) "销户高级",       nvl(b.rcnt_2,0) "销户初级",       sum(a.rcnt_2)over(order by nvl(a.rdate,b.rdate))-nvl(sum(b.rcnt_2)over(order by nvl(a.rdate,b.rdate)),0) "总数高级",       sum(a.rcnt_1)over(order by nvl(a.rdate,b.rdate))-nvl(sum(b.rcnt_1)over(order by nvl(a.rdate,b.rdate)),0) "总数初级"  from tmp_a a full join tmp_b b    on a.rdate=b.rdate order by nvl(a.rdate,b.rdate);