通过 PIVOT TRANSFORM 进行 MS Access Rotate 查询

Question

我在 MS Access 2013 中开发了一个数据库。 我需要从两个表中生成报告：inventory_type、inventory（以及一些 T-SQL 经验）

库存表：

id
inv_type(FK of inventory_type.id)
inv_name, etc.

inventory_type 表：

id
type_name

我用 GROUP BY 做了简单的查询：

SELECT it.type_name AS [Inventory name], Count(i.ID) AS Quantity
FROM inventory_type AS it INNER JOIN inventory AS i ON it.ID = i.inv_type
GROUP BY it.type_name;

这个查询的结果是：

Inventory Name | Quantity
VideoCamera         3
PC                  5
.....

但是结果应该是这样的：

Quantity | VideoCamera | PC
Quantity |     3          5

我试过这样做：

TRANSFORM Count(it.ID) AS Quantity
SELECT "Quantity"
FROM inventory_type AS it INNER JOIN inventory AS i ON it.ID = i.inv_type
GROUP BY it.type_name
PIVOT it.type_name;

但结果并不如我所愿：

Quantity | VideoCamera  |  PC
Quantity        3              
Quantity                    5

有人可以帮我解决这个问题吗，我真的无法理解 ms 访问语义。

Answer 1

只需从GROUP BY 子句中删除type_name：

TRANSFORM Count(it.ID) AS CountOfQuantity 
SELECT 'Quantity' AS Quantity
FROM inventory_type AS it INNER JOIN inventory AS i ON it.ID = i.inv_type 
GROUP BY 'Quantity' 
PIVOT it.type_name;