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我有这个SQL语句,除了OrderCountPercentage计算以外工作正常。我不明白为什么它不计算这些公式是正确的。我只能认为它与使用COUNT函数的事实有关。任何帮助赞赏。SQL Server百分比计算没有正确计算
SELECT Table2014.OrderDate AS December2014OrderDate,
ISNULL(Table2014.Total, 0) AS December2014DailySales,
ISNULL(Table2013.Total, 0) AS December2013DailySales,
ISNULL(Table2014.Total, 0) - ISNULL(Table2013.Total, 0) AS DailySalesDifference,
(ISNULL(Table2014.Total, 0) - ISNULL(Table2013.Total, 0))/NULLIF(Table2013.Total, 0) * 100 AS SalesPercentage,
ISNULL(Table2014.OrderCount, 0) AS December2014DailyOrderCount,
ISNULL(Table2013.OrderCount, 0) AS December2013DailyOrderCount,
ISNULL(Table2014.OrderCount, 0) - ISNULL(Table2013.OrderCount, 0) AS DailyOrderCountDifference,
(ISNULL(Table2014.OrderCount, 0) - ISNULL(Table2013.OrderCount, 0))/Table2013.OrderCount * 100 AS Percentage
FROM (SELECT Sum(order_header_total.oht_net) AS Total,
Dateadd(DAY, 0, Datediff(D, 0, order_header.oh_datetime)) AS OrderDate,
Count(order_header.oh_order_number) AS OrderCount
FROM dbo.order_header_total
INNER JOIN dbo.order_header
ON order_header_total.oht_oh_id = order_header.oh_id
WHERE order_header.oh_datetime BETWEEN '12/01/2014 00:00:00' AND '12/31/2014 23:59:59'
AND order_header.oh_os_id IN (1, 6, 4)
AND order_header.oh_cd_id = 76
GROUP BY Dateadd(DAY, 0, Datediff(D, 0, order_header.oh_datetime))) Table2014
LEFT OUTER JOIN (SELECT Sum(order_header_total.oht_net) AS Total,
Dateadd(YEAR, 1, Dateadd(DAY, 0, Datediff(D, 0, order_header.oh_datetime))) AS OrderDate,
Count(order_header.oh_order_number) AS OrderCount
FROM dbo.order_header_total
INNER JOIN dbo.order_header
ON order_header_total.oht_oh_id = order_header.oh_id
WHERE order_header.oh_datetime BETWEEN '12/01/2013 00:00:00' AND '12/31/2013 23:59:59'
AND order_header.oh_os_id IN (1, 6, 4)
AND order_header.oh_cd_id = 76
GROUP BY Dateadd(YEAR, 1, Dateadd(DAY, 0, Datediff(D, 0, order_header.oh_datetime)))) Table2013
ON Table2013.OrderDate = Table2014.OrderDate
ORDER BY Table2014.OrderDate
完美,工作! – TowelsRus