Thanks for the response.
It would be get the value for each date with the next date then average those values
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Question
Average difference between a group of dates
Hello,
I need to calculate the average minutes between a group of dates. I have a table that has an id and date.
There can be any number of dates per id. I need to find some way to group by the id and return the difference in minutes between each date, then average that. Here is an example of the data.
0205b60a-2ba8-49de-8aad-9e
0205b60a-2ba8-49de-8aad-9e
0205b60a-2ba8-49de-8aad-9e
0205b60a-2ba8-49de-8aad-9e
I can deal with a solution/ideas in TSQL , C# or VB,
Thanks for any help
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Answers
DDL:
Create Table Test(
Id UniqueIdentifier Not Null,
[Date] DateTime)
DML:
Select id, Cast(Avg(Cast(dateb as Float)-Cast(datea as Float)) as DateTime)
From ( Select id, date as datea, (Select Top 1 date from Test b
Where b.id = a.id And b.Date > a.Date) as dateb
From test a ) dates
Where dateb is not Null
Group by id
Order By id
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by: stopher2475Posted on 2007-05-17 at 08:45:39ID: 19109125
Are you averaging the space each date has with the next date or each date has with every date?