oracle： column ambiguously defined

分页查询

column ambiguously defined 未明确定义的列

select *
from (select abc.*, rownum m
          from (select t.oid,
                       t.clues_code,
                       t.clues_name,
                       t.customer_name,
                       (select a.fullname
                          from ecc_prm_areainfo a
                         where a.ennable_flag = 'T'
                           and a.oid = t.area) area,
                       (select to_char(wmsys.wm_concat(o.name))
                          from ecc_tcm.ecc_prm_program o
                         where o.enable_flag = 'T'
                           and o.oid = t.industry) industry,
                       (select to_char(wmsys.wm_concat(p.product_name))
                          from ecc_tcm.ecc_prm_product p
                         where p.enable_flag = 'T'
                           and t.product = p.product_id) product,
                       t.flow_type,
                       cn.flow_oid
                  from ecc_tcm.table1 t,
                 where t.clues_state = 2
                   and t.enable_flag = 'T'

                 order by clues_code ASC) abc
         where rownum <= 10)
where m > 0

这句语句正常

select t.oid,
                       t.clues_code,
                       t.clues_name,
                       t.customer_name,
                       (select a.fullname
                          from ecc_prm_areainfo a
                         where a.ennable_flag = 'T'
                           and a.oid = t.area) area,
                       (select to_char(wmsys.wm_concat(o.name))
                          from ecc_tcm.ecc_prm_program o
                         where o.enable_flag = 'T'
                           and o.oid = t.industry) industry,
                       (select to_char(wmsys.wm_concat(p.product_name))
                          from ecc_tcm.ecc_prm_product p
                         where p.enable_flag = 'T'
                           and t.product = p.product_id) product,
                       t.flow_type,
                       cn.flow_oid
                  from ecc_tcm.table1 t,
                 where t.clues_state = 2
                   and t.enable_flag = 'T'

                 order by clues_code ASC

出错就在

select *
from (select abc.*, rownum m
from abc

where rownum <= 10)
where m > 0

多数是里面的列重复引起的，可以给相同列起别名

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