ms Access sql：使用crostab子查詢連接查詢

Question

以當前形式查詢：

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）我有一張桌子，桌子上有多對一的關系。

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

我想要看起來像：

1 | v1, v2
2 | v1, v3

2）我從交叉表查詢開始：

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

它返回如下顯示：

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

由於值來自下拉選擇菜單，因此它僅返回數字。

3）我想在丟棄Null的同時將v1，v2和v3值連接在一起，所以我使用以下方法： MS Access-將非空列值組合到（列名稱：列值）文本字符串/字段中

要創建這個：

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）當我運行它時，我得到一個語法錯誤，突出顯示了TRANSFORM。

如何解決此問題，如何獲得要顯示的下拉引用？

編輯___________________

所以現在我有：

  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。 嘗試將交叉表查詢另存為命名查詢，並將其用作父查詢的源。

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