ms Access sql：使用crostab子查询连接查询

Question

以当前形式查询：

SELECT
  sr,
  Iif([1]="Null", "", "; 1: "&[1])
& Iif([2]="Null", "", "; 2: "&[2])
& Iif([3]="Null", "", "; 3: "&[3]) AS all_parameters
from (
TRANSFORM first([value])
SELECT [id]
FROM [table]
GROUP BY [id]
PIVOT [value]);

1）我有一张桌子，桌子上有多对一的关系。

[id] | [values] 
   1 |  v1
   1 |  v2 
   2 |  v1
   2 |  v3

我想要看起来像：

1 | v1, v2
2 | v1, v3

2）我从交叉表查询开始：

TRANSFORM first([value])
SELECT [id]
FROM [table]
GROUP BY [id]
PIVOT [value];

它返回如下显示：

[id] | [v1] | [v2] | [v3]
 1   |   1  |   2  |
 2   |   1  |      |   3

由于值来自下拉选择菜单，因此它仅返回数字。

3）我想在丢弃Null的同时将v1，v2和v3值连接在一起，所以我使用以下方法： MS Access-将非空列值组合到（列名称：列值）文本字符串/字段中

要创建这个：

SELECT
  sr,
  Iif([1] is null, "", "; 1: "&[1])
& Iif([2] is null, "", "; 2: "&[2])
& Iif([3] is null, "", "; 3: "&[3]) AS all_parameters
from (
TRANSFORM first([value])
SELECT [id]
FROM [table]
GROUP BY [id]
PIVOT [value]);

4）当我运行它时，我得到一个语法错误，突出显示了TRANSFORM。

如何解决此问题，如何获得要显示的下拉引用？

编辑___________________

所以现在我有：

  SELECT
    [ID],
    Iif([1] is null, "", "; 1: "&[1])
  & Iif([2] is null, "", "; 2: "&[2])
  & Iif([3] is null, "", "; 3: "&[3]) AS all_parameters
  from [query]

它返回：

[id] | [all_parameters] 
 1   |   ;1: ; 2:  |  
 2   |   ;1: ; 3:  |  

Answer 1

你可能做不到。 尝试将交叉表查询另存为命名查询，并将其用作父查询的源。

看到：

• https://www.pcreview.co.uk/threads/crosstab-query-as-a-subquery-how-to-do-that.1176819/
• https://access-programmers.co.uk/forums/showthread.php?t=186465