Question

I have a table with 3 columns StartDate, EndDate, ElapsedTimeInSec.

I use an AFTER INSERT trigger to calculate the ElapsedTimeInSec.

I would like to do this:

• If my start date is 2011-11-18 07:30:00 and my end date 2011-11-18 9:30:00 which give me a ElapsedtimeInSec of 7200 I would like to be able to split it this way.

• Row 1 : 2011-11-18 07:30:00 / 2011-11-18 08:00:00 / 1800

• Row 2 : 2011-11-18 08:00:00 / 2011-11-18 09:00:00 / 3600
• Row 3 : 2011-11-18 09:00:00 / 2011-11-18 09:30:00 / 1800

How can I achieve this result ?

I dont think I made my explaination clear enough.

I have an actual table with data in it which as 2 field one with a StratDowntime and one with a EndDowntime and I would like to create a view of hours per hour base on a production shift of 12 hours (07:00:00 to 19:00:00) of the downtime.

So If I have a downtime from 2011-11-19 06:00:00 to 2011-11-19 08:00:00 I want in my report to see from 07:00:00 so the new rocrd should look like 2011-11-19 07:00:00 to 2011-11-19 08:00:00.

Another example if I do have downtime from 2011-11-19 10:30:00 to 2011-11-19 13:33:00 I should get in my report this
– 2011-11-19 10:30:00 to 2011-11-19 11:00:00
– 2011-11-19 11:00:00 to 2011-11-19 12:00:00
– 2011-11-19 12:00:00 to 2011-11-19 13:00:00
– 2011-11-19 13:00:00 to 2011-11-19 13:33:00

I hope this will clarify the question because none of the solution down there is actually doing this it is close but not on it.

thanks

Answer 1

You could try something like:

DECLARE @StartDate  DATETIME    = '11/18/2011 07:30:00',
        @EndDate    DATETIME    = '11/18/2011 09:30:00',
        @Runner     DATETIME


IF DATEDIFF (mi, @StartDate, @EndDate) < 60

    BEGIN

        SELECT  @StartDate,
                @EndDate,
                DATEDIFF (s, @StartDate, @EndDate)

        RETURN  

    END     

SET @Runner = CONVERT (VARCHAR (10), @StartDate, 101) + ' ' + CAST (DATEPART(hh, @StartDate) + 1 AS VARCHAR) + ':00:00'

WHILE   @Runner <= @EndDate

    BEGIN

        SELECT  @StartDate,
                @Runner,
                DATEDIFF (s, @StartDate, @Runner)

        SET @StartDate  = @Runner
        SET @Runner     = DATEADD(hh, 1, @Runner)

    END

SET @Runner = CONVERT (VARCHAR (10), @EndDate, 101) + ' ' + CAST (DATEPART(hh, @EndDate) AS VARCHAR) + ':00:00'

SELECT  @Runner,
        @EndDate,
        DATEDIFF (s, @Runner, @EndDate)