sql - 使用两个查询连接供应商名称和供应商编号

Question

我有两个疑问。

  select a.supplier_nbr
     from co_global_duns_xref_t a,
          co_global_duns_t b     
    where
     a.global_duns_nbr=b.global_duns_nbr(+)

和

select supplier_name_txt
from (
        select supplier_nbr,supplier_name_txt, source_system_id, 
               row_number() over (order by source_system_id) precedence_nbr
        from   er_supplier_t 
        where  source_system_id in (
                                        SELECT source_system_id
                                        FROM   co_source_system_t
                                        where  active_flag = 'Y' and
                                               erp_version_cd = '3.1' 
                                   ) and
              -- supplier_nbr = '211394790'   
      )
where precedence_nbr = 1  

从第一个查询我会得到供应商 nbr 。对于该供应商 nbr，我需要在第二个中搜索供应商名称并显示两者。请告诉我该怎么做？

Answer 1

select supplier_name_txt
from (
        select supplier_nbr,supplier_name_txt, source_system_id, 
               row_number() over (order by source_system_id) precedence_nbr
        from   er_supplier_t 
        where  source_system_id in (
                                        SELECT source_system_id
                                        FROM   co_source_system_t
                                        where  active_flag = 'Y' and
                                               erp_version_cd = '3.1' 
                                   ) and
               supplier_nbr = '211394790'  ---   
      ) a join co_global_duns_xref_t b on a.supplier_nbr = b.supplier_nbr
where precedence_nbr = 1 

Answer 2

我仍然对这个问题有点困惑，但我会尝试回答它。您应该能够将第一个查询放在第二个查询中，然后按供应商编号加入。

SELECT supplier_nbr,
       supplier_name_txt
  FROM (SELECT er.supplier_nbr,
               supplier_name_txt, 
               source_system_id, 
               row_number() over (PARTITION BY er.supplier_nbr ORDER BY source_system_id) precedence_nbr
          FROM er_supplier_t er,
               (SELECT a.supplier_nbr
                  FROM co_global_duns_xref_t a,
                       co_global_duns_t b     
                 WHERE a.global_duns_nbr=b.global_duns_nbr(+)
               ) a
         WHERE source_system_id IN (SELECT source_system_id
                                      FROM co_source_system_t
                                     WHERE active_flag = 'Y' 
                                       AND erp_version_cd = '3.1' 
                                   ) 
           AND er.supplier_nbr = a.supplier_nbr
  )
 WHERE precedence_nbr = 1  

我还必须将 row_number 分析函数更改为按供应商_nbr 分区