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11216273
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0
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2012-06-26T21:33:28.597
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2012-06-26T21:33:28.597
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11214927
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Body
To make this a little more interesting I added another segment that would have the same price as an earlier segment to make sure I was separating them: <pre><code>INSERT INTO prices(productKey, PriceType,BeginDate,EndDate, price) VALUES (1, 'DISCOUNT', '5-2-2010', '5-8-2010', -15) </code></pre> Also I have a table called <code>tblDates</code> that is populated by the following: <pre><code>INSERT dbo.tblDates (date1) SELECT TOP(65536) ROW_NUMBER()OVER(ORDER BY v1.number)-1 FROM master.dbo.spt_values v1 CROSS APPLY master.dbo.spt_values v2 WHERE v1.type='p' and v2.type='p' GO </code></pre> The script I'm giving here doesn't require that. But having it couldn't hurt speed and doesn't really take up that much room. Here is my answer: <pre><code>DECLARE @InitialBeginDate DATE , @FinalEndDate DATE; SELECT @InitialBeginDate = MIN(BeginDate) , @FinalEndDate = MAX(EndDate) FROM prices WHERE productKey = @ProductKey CREATE TABLE #Dates ( DateValue DATE NOT NULL ) INSERT #Dates (DateValue) SELECT DATEADD(DAY, V.number, @InitialBeginDate) FROM master..spt_values V WHERE V.[type] = 'P' AND V.number BETWEEN 0 AND DATEDIFF(DAY, @InitialBeginDate, @FinalEndDate) ;WITH MergedDays AS ( SELECT ListedDates.DateValue , SUM(P.price) PriceOnDate , DATEDIFF(DAY, @InitialBeginDate, ListedDates.DateValue) - DENSE_RANK() OVER(PARTITION BY SUM(P.price) ORDER BY ListedDates.DateValue, SUM(P.price)) DateGroup FROM #Dates ListedDates INNER JOIN prices P ON P.BeginDate <= ListedDates.DateValue AND P.EndDate >= ListedDates.DateValue AND P.productKey = @ProductKey GROUP BY ListedDates.DateValue ) SELECT MIN(DateValue) AS SegmentBeginDate , MAX(DateValue) AS SegmentEndDate , MAX(PriceOnDate) AS SegmentPrice -- This is just to collapse it, it'll be the same for all records. FROM MergedDays GROUP BY DateGroup ORDER BY SegmentBeginDate DROP TABLE #Dates </code></pre> There are a couple other answers now, so this is just another way of doing things; there are many.
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Title
singulars
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1. This table or related slice is empty.
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1. PODates and timespans with SQL
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 PTQuestion
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1. PTAnswer
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1. This table or related slice is empty.
UserOwnerUserId
1. USJeremy Pridemore
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1. This table or related slice is empty.
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1. This table or related slice is empty.

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