需要澄清"q.type"对平均值/最小值/最大值的交叉表/聚合

Question

这是我上一个问题的后续问题：sql - 最少 9 周 最多 15 周 平均 16 周

当我执行冻糕的真棒答案时，我得到"输入q.Type的参数值"。

有人可以解释为什么以及如何替换/指定它吗？

我不想一直手动输入值。

以下是他的暗语答案：

交叉表2 查询

TRANSFORM SUM(q.AggDetailQty)
SELECT q.ItemCode
FROM UnionAggQuery q
GROUP BY q.ItemCode
PIVOT **q.Type** IN ('AVG 16 WEEKS', 'MIN 9 WEEKS', 'MAX 15 WEEKS');

UnionAggQ Query（连接两个交叉表）

下一个交叉表需要另一个查询作为源，特别是按 ItemCode 使用分类指标列的聚合的联合查询：

SELECT Detail.ItemCode,
       'AVG 16 WEEKS' AS Metric,
       AVG(Detail.Quantity) AS AggDetailQty
FROM Detail INNER JOIN Header ON Detail.SalesOrderNo = Header.SalesOrderNo
WHERE Header.OrderDate >= DATEADD("ww",-16, Date())
GROUP BY Detail.ItemCode
UNION ALL
SELECT Detail.ItemCode,
       'MIN 9 WEEKS' AS Metric,
       MIN(Detail.Quantity) AS AggDetailQty 
FROM Detail INNER JOIN Header ON Detail.SalesOrderNo = Header.SalesOrderNo
WHERE Header.OrderDate >= DATEADD("ww",-9, Date())
GROUP BY Detail.ItemCode
UNION ALL
SELECT Detail.ItemCode,
       'MAX 15 WEEKS' AS Metric,
       MAX(Detail.Quantity) AS AggDetailQty
FROM Detail INNER JOIN Header ON Detail.SalesOrderNo = Header.SalesOrderNo
WHERE Header.OrderDate >= DATEADD("ww",-15, Date())
GROUP BY Detail.ItemCode

最终查询

SELECT t1.*, t2.*
FROM CrossTab1 t1 
INNER JOIN CrossTab2 t2
ON t1.ItemCode = t2.ItemCode

Answer 1

试试这个：

TRANSFORM SUM(q.AggDetailQty)
SELECT q.ItemCode
FROM UnionAggQuery q
GROUP BY q.ItemCode
PIVOT q.Metric IN ('AVG 16 WEEKS', 'MIN 9 WEEKS', 'MAX 15 WEEKS');