Question

我遇到了下面写的sql行的问题。其中大部分是由Access的设计者完成的，我改变了一些像连接这样的东西。连接工作，但它似乎不想在本例中对周为tbl1的字段进行分组。

有人能看到我在这里失踪并指出答案吗？

SELECT tbl2.[name], 
       tbl1.[week], 
       tbl1.[production], 
       Sum(tbl3.[sales]) AS total sales, 
       (tbl1.[production]/tbl3.[sales]) AS Conversion
  FROM (tbl1 RIGHT JOIN tbl2 ON tbl1.[ID] = tbl2.[ID]) 
        RIGHT JOIN tbl3 ON tbl2.[ID] = tbl3.[ID]
  GROUP 
     BY tbl2.[name], 
        tbl1.[week], 
        tbl1.[production], 
        (tbl1.[production]/tbl3.[sales])
 HAVING (((tbl1.[week]) Between [Start week] And [end Week]))
 ORDER BY tbl1.[week];

Answer 1

根据我所知道的，当你通过你选择的相同字段进行分组时。所以，在你的情况下试试这个：

SELECT tbl2.[name], tbl1.[week], tbl1.[production], Sum(tbl3.[sales]) AS total sales, (tbl1.[production]/tbl3.[sales]) AS Conversion
FROM (tbl1 JOIN tbl2 ON tbl1.[ID] = tbl2.[ID]) JOIN tbl3 ON tbl2.[ID] = tbl3.[ID]
GROUP BY tbl2.[name], tbl1.[week], tbl1.[production], Sum(tbl3.[sales]), (tbl1.[production]/tbl3.[sales])
HAVING (((tbl1.[week]) Between [Start week] And [end Week]))
ORDER BY tbl1.[week];

希望它有效，我使用sql server，它可能会有所不同。

Answer 2

您的查询看起来合理，除了：

HAVING (((tbl1.[week]) Between [Start week] And [end Week]))

[Start week]和[end Week]需要在group by子句中进行汇总或汇总。我不确定你真正需要的是哪种解决方案。这是第一种方法：

HAVING tbl1.[week] Between MIN([Start week]) And MAX([end Week])

字段上的SQL分组不起作用

2 个答案: