我的订阅可以持续到任何地方（就我的输出而言应该关注）从1到4个财政季度（也可以看作是四个日期范围）
我正在使用亚利桑那州财政部：
根据订阅的开始和结束日期，我需要弄清楚每个季度有多少订阅活动。
例如，使用（YYYY-MM-DD），我有：
以下是我当前的SQL Server脚本，此处位于SQL Fiddle：
WITH SubscriptionInfo AS
(
SELECT
[Subscriptions].[Customer_Id]
,[DistributorTypes].[Name] AS [Distributor Type]
,[Customers].Zip_Id
,[Subscriptions].[UnsubscribeReason_Id]
,[Subscriptions].[Id] AS [Subscription ID]
,CONVERT(DATE, [Subscriptions].[StartDate]) AS [Subscription Start Date]
,CONVERT(DATE, [Subscriptions].[EndDate]) AS [Subscription End Date]
,[PriorityLevels].PriorityLevel AS [Priority Level]
,CONVERT(DATE, [SubscriptionPriorityLevels].StartDate) AS [Priority Level Start Date]
,CONVERT(DATE, [SubscriptionPriorityLevels].EndDate) AS [Priority Level End Date]
,[FundingSources].[Name] AS [Funding Source]
,CONVERT(DATE, [SubscriptionFundingSources].StartDate) AS [SubscriptionFundingSources Start Date]
,CONVERT(DATE, [SubscriptionFundingSources].EndDate) AS [SubscriptionFundingSources End Date]
FROM [Subscriptions]
LEFT JOIN [SubscriptionPriorityLevels]
ON [SubscriptionPriorityLevels].Subscription_Id = Subscriptions.Id
LEFT JOIN [PriorityLevels]
ON [PriorityLevels].Id = SubscriptionPriorityLevels.PriorityLevel_Id
LEFT JOIN [SubscriptionFundingSources]
ON [SubscriptionFundingSources].Subscription_Id = Subscriptions.Id
LEFT JOIN [FundingSources]
ON [FundingSources].Id = [SubscriptionFundingSources].FundingSource_Id
LEFT JOIN [Customers]
ON [Customers].Id = [Subscriptions].Customer_Id
LEFT JOIN [DistributorTypes]
ON [DistributorTypes].Id = Customers.DistributorType_Id
WHERE
([Subscriptions].StartDate >= '2016-07-01') -- Dummy dates, would later be parameters
AND ([Subscriptions].EndDate <= '2017-06-30'
OR [Subscriptions].EndDate IS NULL)
AND ([PriorityLevels].PriorityLevel IN (2, 3)) -- Only care about these two levels
AND ([Customers].DistributorType_Id = 1) -- Distributor Type: Number One Distrubition
AND ([SubscriptionFundingSources].FundingSource_Id = 2) -- Funding Source: First Bank
)
SELECT
[SubscriptionInfo].Customer_Id
,[SubscriptionInfo].[Subscription ID]
,MAX([SubscriptionInfo].[Priority Level]) AS [Highest Priority Level]
,CASE -- Determine which fiscal quarter each Subscription Start Date belongs to
WHEN MONTH([SubscriptionInfo].[Subscription Start Date]) IN (7, 8, 9) THEN 1 -- July, August, September
WHEN MONTH([SubscriptionInfo].[Subscription Start Date]) IN (10, 11, 12) THEN 2 -- October, November, December
WHEN MONTH([SubscriptionInfo].[Subscription Start Date]) IN (1, 2, 3) THEN 3 -- January, Feburary, March
ELSE 4 -- April, May, June
END AS [Fiscal Quarter Start Date]
,CASE -- Determine which fiscal quarter each Subscription Start Date belongs to
WHEN MONTH([SubscriptionInfo].[Subscription End Date]) IN (7, 8, 9) THEN 1 -- July, August, September
WHEN MONTH([SubscriptionInfo].[Subscription End Date]) IN (10, 11, 12) THEN 2 -- October, November, December
WHEN MONTH([SubscriptionInfo].[Subscription End Date]) IN (1, 2, 3) THEN 3 -- January, Feburary, March
ELSE 4 -- April, May, June
END AS [Fiscal Quarter End Date]
FROM [SubscriptionInfo]
GROUP BY
[SubscriptionInfo].Customer_Id
,[SubscriptionInfo].[Subscription ID]
,CASE -- Group Subscription Start Date's into Fiscal Quarters
WHEN MONTH([SubscriptionInfo].[Subscription Start Date]) IN (7, 8, 9) THEN 1 -- July, August, September
WHEN MONTH([SubscriptionInfo].[Subscription Start Date]) IN (10, 11, 12) THEN 2 -- October, November, December
WHEN MONTH([SubscriptionInfo].[Subscription Start Date]) IN (1, 2, 3) THEN 3 -- January, Feburary, March
ELSE 4 -- April, May, June
END
,CASE -- Group Subscription End Date's into Fiscal Quarters
WHEN MONTH([SubscriptionInfo].[Subscription End Date]) IN (7, 8, 9) THEN 1 -- July, August, September
WHEN MONTH([SubscriptionInfo].[Subscription End Date]) IN (10, 11, 12) THEN 2 -- October, November, December
WHEN MONTH([SubscriptionInfo].[Subscription End Date]) IN (1, 2, 3) THEN 3 -- January, Feburary, March
ELSE 4 -- April, May, June
END
ORDER BY
[SubscriptionInfo].Customer_Id
到目前为止，我能够确定订阅开始的财政季度以及结束的财政季度。
我希望能够计算每个季度有多少订阅活动。
期望输出：
| FirstQuarter | SecondQuarter | ThirdQuarter | FourthQuarter |
|--------------|---------------|--------------|---------------|
| 2 | 1 | 3 | 3 |
答案 0 :(得分：2)
一旦你有一张描述宿舍开始和结束日期的表格，就像@Sean Lange所建议的那样，你只需要将你的订阅的开始和结束日期与季度的开始和结束日期进行比较，然后将它们计算在重叠的位置。 。基本上，如果A.Start＆lt;两个范围有一些重叠。 B.End和A.End＆gt; B.Start。
这是模式的完整示例。
-------------------------
-- construct the quarters table (taken from the SQL Fiddle in comments above)
DECLARE @FiscalDate Table
(
Id INT NOT NULL,
FiscalYear INT NOT NULL,
FiscalQuarter INT NOT NULL,
QuarterStartDate DATE NOT NULL,
QuarterEndDate DATE NOT NULL
PRIMARY KEY(Id)
);
INSERT INTO @FiscalDate
(Id, FiscalYear, FiscalQuarter, QuarterStartDate, QuarterEndDate)
VALUES
( 1, 2016, 1, '2016-07-01', '2016-09-30')
,(2, 2016, 2, '2016-10-01', '2016-12-31')
,(3, 2017, 3, '2017-01-01', '2017-03-31')
,(4, 2017, 4, '2017-04-01', '2017-06-30')
;
-------------------------
--Get some random test data to imitate subscriptions ranges
DECLARE @tempSet Table(a date, b date)
INSERT INTO @tempSet SELECT TOP 15
dateadd(dd, ROUND(365 * RAND(convert(varbinary, newid())), 0), '2016-07-01') as a
, dateadd(dd, ROUND(365 * RAND(convert(varbinary, newid())), 0), '2016-07-01') as b
FROM sysobjects
-------------------------
-- Fix our random data a little (start date needs to be before end date)
DECLARE @DateRanges Table(StartDate date, EndDate date)
INSERT INTO @DateRanges
SELECT a, b FROM @tempset WHERE a <= b UNION SELECT b, a FROM @tempset WHERE b < a
-------------------------
-- Show our Date ranges in a useful order for review
SELECT * FROM @DateRanges ORDER BY StartDate, EndDate
-------------------------
-- Show our by-quarter counts.
SELECT
fd.FiscalQuarter
, count(*) as ActiveSubsCount
FROM
@FiscalDate fd
JOIN
@DateRanges dr
on fd.QuarterStartDate < dr.EndDate
and fd.QuarterEndDate >= dr.StartDate
GROUP BY
fd.FiscalQuarter
-------------------------
-- and in your desired output (without your quarters table)
SELECT
COUNT(CASE WHEN '2016-07-01' < dr.EndDate AND '2016-09-30' >= dr.StartDate THEN 1 ELSE NULL END) AS FirstQuarter
, COUNT(CASE WHEN '2016-10-01' < dr.EndDate AND '2016-12-31' >= dr.StartDate THEN 1 ELSE NULL END) AS SecondQuarter
, COUNT(CASE WHEN '2017-01-01' < dr.EndDate AND '2017-03-31' >= dr.StartDate THEN 1 ELSE NULL END) AS ThirdQuarter
, COUNT(CASE WHEN '2017-04-01' < dr.EndDate AND '2017-06-30' >= dr.StartDate THEN 1 ELSE NULL END) AS FourthQuarter
FROM
@DateRanges dr