Question

我有以下查询

SELECT   Case 
           when  V.[Code Article] in 
              (SELECT   [Code Article]
              FROM     [Prix Revient MPX CMR]  c
              WHERE    CONVERT(DATE, V.[Date Time]) =  [DATE] and [CMR] = V.[Code Site] )
              then c.[Prix de revient réel] 
          ELSE     V.[Prix de Revient]  
        end as [Prix de Revient]
FROM     dbo.[Sales] V

我收到以下错误：

多部分标识符“c.Prix derevientréel”无法绑定

如何修改？

Answer 1

如果您将查询格式化为：

SELECT (Case when V.[Code Article] in (SELECT c.[Code Article]
                                       FROM [Prix Revient MPX CMR]  c
                                       WHERE CONVERT(DATE, V.[Date Time]) =  c.[DATE] and c.[CMR] = V.[Code Site]
                                     )
             then c.[Prix de revient réel] 
             ELSE V.[Prix de Revient]  
        end) as [Prix de Revient]
FROM  dbo.[Sales] V;

那么问题就很明显了。 c子句没有then。大概你想要一个join：

select coalesce(c.[Prix de revient réel], V.[Prix de Revient]) as [Prix de Revient]
from dbo.[Sales] V left join
     [Prix Revient MPX CMR]  c
     on CONVERT(DATE, V.[Date Time]) =  c.[DATE] and
        c.[CMR] = V.[Code Site] and
        V.[Code Article] = c.[Code Article]

Answer 2

您必须使用sub-query或join

尝试以下

SELECT CASE WHEN  V.[Code Article] IN (SELECT [Code Article] 
                                       FROM [Prix Revient MPX CMR]  c
                                       WHERE CONVERT(DATE, V.[Date Time]) =  [DATE] and [CMR] = V.[Code Site] 
                                       )
            THEN (SELECT [Prix de revient réel] FROM [Prix Revient MPX CMR] WHERE CONVERT(DATE, V.[Date Time]) =  [DATE] and [CMR] = V.[Code Site])
        ELSE     V.[Prix de Revient]  
        END AS [Prix de Revient]
FROM dbo.[Sales] V

子查询的情况

2 个答案: