内部联接不显示结果

Question

我想进行内部联接，但我没有任何结果：

select 
  t5.tcdv_id, t5.gps_coordx, t5.gps_coordy, 
  t6.status
from
(
  select 
    t3.tcdv_id tcdv_id, t3.reg_date reg_date, 
    t4.CONTROLLERCOMM_STATUS status 
  from 
    SCS_L_SCSCONTROLLERSTATUS t4
    inner join                  
    (
      select 
        t1.tcdv_id tcdv_id,
        max(reg_date) reg_date 
      from 
        SCS_L_SCSCONTROLLERSTATUS t2
      inner join 
      (
        select distinct 
          tcdv_id 
        from 
          SCS_L_SCSCONTROLLERSTATUS 
        where 
          tcdv_id not in('C1010000','C10100000')
      ) t1 
      on 
        t1.tcdv_id=t2.tcdv_id
    group by 
      t1.tcdv_id
  ) t3 
  on 
    t3.tcdv_id=t4.tcdv_id and 
    t3.reg_date=t4.reg_date 
) t6                   
inner join
(
  select 
    t.tcdv_id tcdv_id, t.int_ip int_ip, 
    b.gps_coordx gps_coordx, b.gps_coordy gps_coordy 
  from
    bits.tms_m_node b                     
  inner join  
    tscs.scs_m_intlc@"BITS_TSCS.CORE.TMC.LOCAL" t 
  on 
    t.node_id=b.node_id
) t5 
on 
  t5.tcdv_id=t6.tcdv_id;