我想找到供应商组的总成本,在12个月滚动平均值上计算 .
SELECT
sum(AEBill.[TotalCost])
,AEEnc.ProviderID
,AEEnc.Date
INTO #TotalCostAccuteCareAE
FROM EncDetail AEEnc
INNER JOIN [EncBilling] as AEBill
ON AEBill.[SK_EncID] = AEEnc.[SK_EncID]
AND AEBill.ProviderID = AEEnc.ProviderID
WHERE AEEnc.Date <= reportDate
GROUP BY AEBill.ProviderID
此查询仅选择小于或等于报告日期的所有记录的总和 . 但我希望从给定月份开始的12个月的平均成本 .
1 回答
看看这个问题SQL Server: Get data for only the past year