分组依据... SQL查询执行不正确

Question

我想查看某个日期范围内的总销售产品数量，即

 -------------------------
 |  PRODUCT   | QUANTITY |
 -------------------------
 |   A        |    120   |
 -------------------------
 |   B        |     75   |
 -------------------------

我在MS Access 2003中有以下sql查询：

SELECT Product, Sum(PurchaseQuantity) AS Quantity
FROM tblInvoice
GROUP BY Product
HAVING PurchaseDate BETWEEN #3/19/2013# and #3/22/2013#;

但这没有执行。 MS Access给我这样的错误：

“您试图执行不包含指定表达式'PurchaseDate BETWEEN＃3/19/2013＃和＃3/22/2013＃'作为聚合函数一部分的查询。”

到目前为止，我知道我需要在Group By子句中添加PurchaseDate。 但是有没有办法在不将PurchaseDate放在Group By子句中的情况？

先感谢您。

Answer 1

您应该在“ WHERE”子句中使用purchaseDate条件：

SELECT Product, Sum(PurchaseQuantity) AS Quantity 
FROM tblInvoice
WHERE PurchaseDate BETWEEN #3/19/2013# and #3/22/2013#
GROUP BY Product