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）我的一张桌子有多对一的关系。

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

我想要的样子：

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];

它返回这样的显示：

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

它只返回数字，因为值来自下拉选择菜单。

3）我想在丢弃Null的同时将v1，v2和v3值连接在一起，所以我使用的是：MS Access - combine non-null column values into a (column name: column value) text string / field

要创建此文件：

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，出现突出显示TRANSFORM的语法错误。

如何解决此问题，如何获得要显示的下拉引用？

EDIT ___________________

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

您可能无法做到这一点。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。

请参阅：

ms Access sql：使用crostab子查询连接查询

1 个答案: