我需要过去24小时,7天的结果。我想要的结果需要采用以下格式:
2011-11-05 11 orders $12354.94
2011-11-04 12 orders $12555.72
2011-11-03 5 orders $1000.24
在尝试一些查询时,我不断返回不同的行数。例如,此查询:
SELECT CAST(Left(OrderDate,10) as smalldatetime) as PurchaseDate,
COUNT(Orders.WebOrderNumber) as "Rows",
SUM(cast(Orders.Total_Lines_Net AS money)) as Total
FROM Orders
WHERE OrderDate BETWEEN getdate() - 7 AND getdate()
GROUP BY cast(Left(OrderDate,10) as smalldatetime)
ORDER BY cast(Left(OrderDate,10) as smalldatetime)
返回此数据:
PurchaseDate Rows Total
2011-12-01 00:00:00 1539 404798.85
2011-12-02 00:00:00 1572 324963.604
2011-12-03 00:00:00 970 119244.93
2011-12-04 00:00:00 1092 120888.244
2011-12-05 00:00:00 1201 337646.952
2011-12-06 00:00:00 1309 287609.243
2011-12-07 00:00:00 1555 315223.22
我认为12月1日的行似乎很低,所以我尝试了另一个查询:
SELECT SUM(cast(Orders.Total_Lines_Net AS money)) as Total,
COUNT(Orders.WebOrderNumber) as "Rows",
CAST(Left(OrderDate,10) as smalldatetime) as PurchaseDate
FROM Orders
WHERE OrderDate between '2011-12-01 00:00:00' AND + '2011-12-01 23:59:59'
GROUP BY cast(Left(OrderDate,10) as smalldatetime)
返回2597行。第一个查询是否没有返回整个24小时的时间段?此数据库中的日期字段为varchar(255)
,其中包含日期,小时,分钟和秒。什么是正确的方法呢?
答案 0 :(得分:9)
;WITH [cteOrders] AS
(
SELECT CONVERT(DATE, [OrderDate]) AS [OrderDate],
CONVERT(MONEY, [Total_Lines_Net]) AS [Total_Lines_Net]
FROM [dbo].[Orders]
)
SELECT [OrderDate],
COUNT(*) AS [Rows],
SUM([Total_Lines_Net]) AS [Total]
FROM [cteOrders]
WHERE DATEDIFF(DAY,[OrderDate],GETDATE()) <= 7
GROUP BY [OrderDate]
ORDER BY [OrderDate]
答案 1 :(得分:2)
此数据库中的日期字段是varchar(255),其中包含日期,小时,分钟和 秒。什么是正确的方法呢?
这里你的问题是。这太荒谬了;)
从一开始就将OrderDate字段设为DATE。
您的方法会触发表扫描和其他不良内容。