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In this short snippet, let us see how to find the Hours, Minutes and Seconds in between two Datetime.
-- Find Hours, Minutes and Seconds in between two datetime
DECLARE @First datetime
DECLARE @Second datetime
SET @First = '04/02/2008 05:23:22'
SET @Second = getdate()
SELECT DATEDIFF(day,@First,@Second)*24 as TotalHours,
DATEDIFF(day,@First,@Second)*24*60 as TotalMinutes,
DATEDIFF(day,@First,@Second)*24*60*60 as TotalSeconds
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11 Responses to "Find Hours, Minutes and Seconds in between two Datetime"I disagree.
DECLARE @First datetime
DECLARE @Second datetime
SET @First = '04/17/2008 08:00:00'
SET @Second = getdate()
SELECT DATEDIFF(hour,@First,@Second) as TotalHours,
DATEDIFF(minute,@First,@Second) - (DATEDIFF(hour,@First,@Second) * 60) as TotalMinutes,
DATEDIFF(second,@First,@Second) - (DATEDIFF(minute,@First,@Second) * 60) as TotalSeconds
would give a meaningful hours (plus) minutes (plus) seconds.
Leaving the subtraction out of the second and third columns would give independent totals, like 2 hours 178 minutes rather than 2 hours 58 minutes (with the subtraction).
Hi,
Thanks for sharing the comment.
The sql snippet calucates hours, minutes and seconds irrespective of each other. That's why the column names are written as TotalHours, TotalMinutes, TotalSeconds. As you mentioned, if anyone wants to get independent totals, he should not subtract.
Hi,
Thanks it helps me lots. i whichever was searching i got it from this.
if this is independent, it wont work. example is 1:59 am and 2:15 am
I do not think the author intended to make it work on just the time. I guess the sample as a whole works out quiet well!!
If you want the difference between two datetimes calculated into different columns, here is a much faster way:
floor(DATEDIFF(ss,date1,date2)/3600) as Hours,
floor(DATEDIFF(ss,date1,date2)/60)- floor(DATEDIFF(ss,date1,date2)/3600)*60 as Minutes,
floor(DATEDIFF(ss,date1,date2))- floor(DATEDIFF(ss,date1,date2)/60)*60 as TotalSeconds
Try this UDF to calucalte the exact difference:
http://www.sqlmag.com/Article/ArticleID/48764/sql_server_48764.html
did anyone understand the code at http://www.sqlmag.com/Article/ArticleID/48764/sql_server_48764.html ??
the code has something called callout A, B, C etc...
does anyone know what this is
What is that link got to do with this post?
Why not just use the ss parameter or any of the other valid options and use date1 / date 2 in a single select am I mising something, like the point to all the FLOOR and math?
DATEDIFF(ss, [CreateDateTime],[ActionUpdateDateTime]) AS [ExecutionSeconds]
year
yy, yyyy
quarter
qq, q
month
mm, m
dayofyear
dy, y
day
dd, d
week
wk, ww
hour
hh
minute
mi, n
second
ss, s
millisecond
ms
microsecond
mcs
nanosecond
ns
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