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Adding Seconds to Time field


Adding Seconds to Time field

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celayne
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I have a field that contains a time (i.e. 16:40:27) and I have a field of "SecondsAtStatus" (i.e. 734).
I need to add the "SecoundsAtStatus" to the Time field to come up with an End Time. Any help is appreciated.
Lynn Pettis
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celayne (8/29/2012)
I have a field that contains a time (i.e. 16:40:27) and I have a field of "SecondsAtStatus" (i.e. 734).
I need to add the "SecoundsAtStatus" to the Time field to come up with an End Time. Any help is appreciated.


Is this an actual time field or is it defined as a varchar?

Cool
Lynn Pettis

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celayne
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It is a time field
Lowell
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As Lynn was asking, it's a real TIME datatype, you can add values via dateadd.


/*
(No column name) (No column name)
16:40:27.0000000 16:52:41.0000000
*/
declare @time time
SET @time = '16:40:27'
SELECT @time,DATEADD(ss,734,@time)



Lowell

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This:



declare @TimeStr time = '16:40:27',
@SecondsAtStatus int = 734;
select @TimeStr, dateadd(ss, @SecondsAtStatus, @TimeStr);




Cool
Lynn Pettis

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celayne (8/29/2012)
It is a time field


Then you actually have a potentially serious problem. What do you want to do when adding the seconds takes you over 24 hours???

--Jeff Moden

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Jeff Moden (8/30/2012)
celayne (8/29/2012)
It is a time field


Then you actually have a potentially serious problem. What do you want to do when adding the seconds takes you over 24 hours???


Doesn't overflow, just rolls around.




declare @TimeStr time = '16:40:27',
@SecondsAtStatus int = 86399;
select @TimeStr, dateadd(ss, @SecondsAtStatus, @TimeStr)
go

declare @TimeStr time = '16:40:27',
@SecondsAtStatus int = 86400;
select @TimeStr, dateadd(ss, @SecondsAtStatus, @TimeStr)
go

declare @TimeStr time = '16:40:27',
@SecondsAtStatus int = 86401;
select @TimeStr, dateadd(ss, @SecondsAtStatus, @TimeStr)
go




Cool
Lynn Pettis

For better assistance in answering your questions, click here
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For Running Totals and its variations, click here or when working with partitioned tables
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Jeff Moden
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Like I said... serious problem.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
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dwain.c
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Jeff Moden (8/30/2012)
Like I said... serious problem.


Jeff - I don't get it (no coffee yet this morning).

If it starts at 23:59:00 and ends at 00:01:00 (120 seconds), what is the problem?


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dwain.c (8/30/2012)
Jeff Moden (8/30/2012)
Like I said... serious problem.


Jeff - I don't get it (no coffee yet this morning).

If it starts at 23:59:00 and ends at 00:01:00 (120 seconds), what is the problem?


It depends... on whether or not that's the desired effect. If you're trying to aggregate time (for example) then the wrap at 24 hours is a killer on a TIME "field".

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
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