SQL SERVER - Group records by n minutes interval

Question

I have a table like this:

     [SDate - DateTime]              [Value - Decimal]
    2010-11-16 10:32:22                     1
    2010-11-16 10:58:08                     2

and I need a query to group records by n minutes interval.

Output can be for example(grouped by 60 minutes):

    2010-11-16 10:10:00   avg(Value)
    2010-11-16 10:11:00   avg(Value)
    2010-11-16 10:12:00   avg(Value)

Up to now, I have been using this query to group by 10 minutes interval because intervals were between 0 and 60 minutes:

...
GROUP BY
DATEPART(YEAR, SDate),
DATEPART(MONTH, SDate),
DATEPART(DAY, SDate),
DATEPART(HOUR, SDate),
(DATEPART(MINUTE, SDate) / 10)

But now the interval can be 125436758 minutes, for example.

I can not create new tables and the user-defined interval must be n minutes. I am using SQL SERVER 2012. Thanks.

score 4 · Accepted Answer · answered Nov 06 '14 at 20:29

4

GROUP BY 
...
(DATEDIFF(MINUTE, 0, SDate) / @n)

answered Nov 06 '14 at 20:29

Tab Alleman

It works, but how can I get an output like 2010-11-16 10:10:00? Thanks – Álvaro Ruiz Nov 06 '14 at 22:17
Look at the different output options of the FORMAT() function. – Tab Alleman Nov 07 '14 at 13:49
Consider [this](http://stackoverflow.com/questions/9814930/group-datetime-into-5-15-30-and-60-minute-intervals) answer if you need to format the n-minutes period as a date in the output – Jose Parra Nov 29 '16 at 06:32

1 Answers1