get max value occurred within every 10 minute of a day.

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hello...

i have a table named pointdb containing SOLAR_ACTIVE_POWER_G_VAL0,LOAD_ACTIVE_POWER_G_VAL0, timestamp columns. it contains every second wise data. i wanted to display max of SOLAR_ACTIVE_POWER_G_VAL0 and max of LOAD_ACTIVE_POWER_G_VAL0 occurred within every 10 minute of intereval. for that i have written a query as follows

SQL

SELECT max(SOLAR_ACTIVE_POWER_G_VAL0) AS Solar,max(LOAD_ACTIVE_POWER_G_VAL0) AS Load, (DATEPART(MINUTE, [timestamp]) % 10) AS [Minutes]
FROM pointdb WHERE CONVERT(varchar,[timestamp],101) in('03/07/2014')
GROUP BY (DATEPART(MINUTE, [timestamp]) % 10)

but it is not giving right output.
plz give me right solution.

Posted 10-Mar-14 18:46pm

TAUSEEF KALDANE

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Bernhard Hiller · Accepted Answer · 2014-03-10T23:26:00

Solution 1

(DATEPART(MINUTE, [timestamp]) % 10) will be the same for any hour of the day. That means, you have to get the hour into that value somehow. I'd suggest to use

(DATEPART(HOUR, [timestamp]) * 10 + DATEPART(MINUTE, [timestamp]) % 10)

(both in SELECT and GROUP BY).

Posted 10-Mar-14 23:26pm

Bernhard Hiller

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TAUSEEF KALDANE 11-Mar-14 5:52am

it gives only minute wise data. It should give data occurred whithin 10 minutes of interval