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试图显示某些日期的销售。列应该是那些说日期。写更好的方法来写这个SQL Server查询?
得到它的工作,但代码是如此混乱和复杂,我的直觉告诉我必须有一个简单的方法来写这个。
任何人都可以指向正确的方向或想出更优雅的解决方案吗?
查询
SELECT
(SELECT Jul10.TotalSales
FROM
(SELECT sale.SaleDate, SUM (sale_bow.Qty * bow.Price) As TotalSales
FROM sale
INNER JOIN sale_bow ON sale_bow.SaleID = sale.SaleID
INNER JOIN bow ON bow.BowID = sale_bow.BowID GROUP BY sale.SaleDate) As Jul10
WHERE Jul10.SaleDate ='1999-07-10') AsJul10,
(SELECT Jul11.TotalSales
FROM (SELECT sale.SaleDate, SUM (sale_bow.Qty * bow.Price) As TotalSales
FROM sale
INNER JOIN sale_bow ON sale_bow.SaleID = sale.SaleID
INNER JOIN bow ON bow.BowID = sale_bow.BowID
GROUP BY sale.SaleDate) As Jul11
WHERE Jul11.SaleDate ='1999-07-11') As Jul11,
(SELECT Jul12.TotalSales
FROM
(SELECT sale.SaleDate, SUM (sale_bow.Qty * bow. Price) As TotalSales
FROM sale
INNER JOIN sale_bow ON sale_bow.SaleID = sale.SaleID
INNER JOIN bow ON bow.BowID = sale_bow.BowID GROUP BY sale.SaleDate)
As Jul12 WHERE Jul12.SaleDate = '1999-07-12')
As Jul12, (SELECT Jul13.TotalSales
FROM (SELECT sale.SaleDate, SUM (sale_bow.Qty * bow.Price) As TotalSales
FROM sale
INNER JOIN sale_bow ON sale_bow.SaleID = sale.SaleID
INNER JOIN bow ON bow.BowID = sale_bow.BowID
GROUP BY sale.SaleDate) As Jul13 WHERE Jul13.SaleDate ='1999-07-13') As Jul13
也许尝试codereview.se – codenheim 2014-10-19 22:46:59