SQL 查询联接表

Question

我正在尝试 join 基于地址 1 的 primary key 的表格。但是，下面的问题会为同一地址创建重复记录。 003 78057911 (wpphtp !=F) 和 003 78057922 (wpphtp = F) 是 database 中的相同字段，但我想将其提取到不同的列中。我该怎么做？

 select ABAN8,'CREATE',ABALPH, '','', '','','','','','', EAEMAL,'',
                 CASE
                      WHEN wpphtp != 'F'
                         THEN WPAR1
          else ' '
                 END AS prefix ,'', CASE
                      WHEN wpphtp != 'F'
                         THEN WPph1
          else ' '
                 END AS phone, '',CASE
                      WHEN wpphtp = 'F'
                         THEN wpar1
          else ' '
                 END AS prefixfax,' ',CASE
                      WHEN wpphtp = 'F'
                         THEN wpph1
          else ' '
                 END AS fax  from PRODDTA.F0111 
    join PRODDTA.F01151 on proddta.f0111.wwan8 = PRODDTA.F01151.EAAN8   
    join PRODDTA.F0115 JOIN PRODDTA.F0101 ON PRODDTA.F0115.wpAN8 = PRODDTA.F0101.ABAN8  
    ON PRODDTA.F0115.wpAN8 = PRODDTA.F0111.wwAN8 where wwidln < 1
   order by wwan8

结果：

1 | CREATE | E-GLOBAL INNOVATIVE SDN BHD | kinki@hostpro2u.com   | 003 | 78057911
1 | CREATE | E-GLOBAL INNOVATIVE SDN BHD | billing@hostpro2u.com | 003 | 78057911
1 | CREATE | E-GLOBAL INNOVATIVE SDN BHD | kinki@hostpro2u.com   | 003 | 78057922
1 | CREATE | E-GLOBAL INNOVATIVE SDN BHD | billing@hostpro2u.com | 003 | 78057922

预期结果：

1   CREATE | E-GLOBAL INNOVATIVE SDN BHD | kinki@hostpro2u.com   | 003 | 78057911 | 003 | 78057922
1   CREATE | E-GLOBAL INNOVATIVE SDN BHD | billing@hostpro2u.com | 003 | 78057911 | 003 | 78057922

Answer 1

您可以使用条件聚合来获取不同列中不同 wpphtp 的值。没有看到 table 结构和样本数据，很难 100% 确定，但这应该有效：

select ABAN8,'CREATE',ABALPH, '','', '','','','','','', EAEMAL,'',
       MAX(CASE WHEN wpphtp != 'F' THEN WPAR1 END) AS prefix,'',
       MAX(CASE WHEN wpphtp != 'F' THEN WPph1 END) AS phone, '',
       MAX(CASE WHEN wpphtp = 'F'  THEN wpar1 END) AS prefixfax,' ',
       MAX(CASE WHEN wpphtp = 'F'  THEN wpph1 END) AS fax
from PRODDTA.F0111 
join PRODDTA.F01151 on proddta.f0111.wwan8 = PRODDTA.F01151.EAAN8   
join PRODDTA.F0115 JOIN PRODDTA.F0101 ON PRODDTA.F0115.wpAN8 = PRODDTA.F0101.ABAN8  
  ON PRODDTA.F0115.wpAN8 = PRODDTA.F0111.wwAN8 where wwidln < 1
GROUP BY -- add all the other column names here
order by wwan8

在 GROUP BY 子句中，您需要添加 all 其他列名称（即除 prefix、phone、prefixfax 和 fax).

SQL 查询联接表

SQL Query Join Tables

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sql-server

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