我有一个数据库,有产品,成本和销售价格。
我想编写一份简单的报告,将列出类似的成本计算,并列出数额。
然后,我将利用这一标记对新产品进行标识。
因此,我的数据库希望:
productid, costPrice, sellingPrice
123, 9.99, 14.99
www.un.org/Depts/DGACM/index_spanish.htm 我的新产品只有成本价格,因此,我要说明平均销售价对成本相同的产品,并将其应用于新产品。
我有一个数据库,有产品,成本和销售价格。
我想编写一份简单的报告,将列出类似的成本计算,并列出数额。
然后,我将利用这一标记对新产品进行标识。
因此,我的数据库希望:
productid, costPrice, sellingPrice
123, 9.99, 14.99
www.un.org/Depts/DGACM/index_spanish.htm 我的新产品只有成本价格,因此,我要说明平均销售价对成本相同的产品,并将其应用于新产品。
首先,你的标记是(Selling/Cost)。
页: 1
如果你希望检查一下,那就应该像现在这样。
SELECT CostPrice, AVG(SellingPrice/CostPrice)
FROM Table
GROUP BY CostPrice
除非你使用价格范围,否则,这不会在意义上产生许多成果。
某些产品可能比其他产品有更大的标记,但价格仍然不变。 你可能希望以稍微不同的方式对待这一问题。
为了与你的工作范围相配合,我也许会去掉像我这样的东西。
DECLARE @Range INT
SET @Range = 5
SELECT CEILING(CostPrice / @Range) * @Range,
AVG(SellingPrice / CostPrice)
FROM @Table
GROUP BY CEILING(CostPrice / @Range)
或形成一个含有你价格幅度的表格,并按这些幅度分类。
类似于
DECLARE @Table TABLE(
CostPrice FLOAT,
SellingPRice FLOAT
)
INSERT INTO @Table SELECT 0.99, 14.99
INSERT INTO @Table SELECT 4.99, 9.99
INSERT INTO @Table SELECT 9.99, 14.99
INSERT INTO @Table SELECT 19.99, 9.99
DECLARE @Ranges TABLE(
StartVal FLOAT,
EndVal FLOAT
)
INSERT INTO @Ranges SELECT 0, 5
INSERT INTO @Ranges SELECT 5, 10
INSERT INTO @Ranges SELECT 10, 15
INSERT INTO @Ranges SELECT 15, NULL
SELECT ISNULL(r.EndVal, r.StartVal),
AVG(t.SellingPRice / t.CostPrice)
FROM @Ranges r LEFT JOIN
@Table t ON t.CostPrice > r.StartVal AND (t.CostPrice <= r.EndVal OR r.EndVal IS NULL)
GROUP BY ISNULL(r.EndVal, r.StartVal)
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