How I sum or aggregate time data in SQL server

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 How i sum or aggregate time data in sql server  

hh:mm:ss
00:01:03
00:00:30
00:00:31
00:00:34
00:00:33
00:00:31
00:00:57
00:00:36
--------------
0:01:39

What I have tried:

sql server return error:
"Msg 8117, Level 16, State 1, Line 4
Operand data type time is invalid for sum operator."

Posted 24-Aug-21 20:19pm

midree

Updated 24-Aug-21 23:44pm

v3

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2 solutions

Solution 1

You can't add time any more than you can add telephone numbers: convert it to seconds by extracting the hours and multiplying by 60, then add in the minutes and multiply that by 60, then add in the seconds.

You can then sum those to get a total in seconds.
Then convert that back to hour, minute, and second counts using the divide and modulus operators.

Posted 24-Aug-21 20:38pm

OriginalGriff

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Maciej Los · Accepted Answer · 2021-08-24T23:44:00

Sorry, but your calculations are wrong:

hh:mm:ss
00:01:03
00:00:30
00:00:31
00:00:34
00:00:33
00:00:31
00:00:57
00:00:36
--------------
00:01:39
00:05:15

I'd suggest to use DATEPART[^] and DATEADD[^] functions, as follow:

SQL

CREATE TABLE toj
(
  jobtime time
);

INSERT INTO toj (jobtime)
VALUES('00:01:03'),
('00:00:30'),
('00:00:31'),
('00:00:34'),
('00:00:33'),
('00:00:31'),
('00:00:57'),
('00:00:36');

SELECT DATEADD(hh, t.TotalHours, DATEADD(n, t.TotalMinutes, DATEADD(ss, t.TotalSeconds, CAST('00:00:00' AS time)))) AS TotalTime
FROM (
  SELECT SUM(DATEPART(hh, jobtime)) AS TotalHours, 
    SUM(DATEPART(n, jobtime)) AS TotalMinutes, 
    SUM(DATEPART(ss, jobtime)) AS TotalSeconds
  FROM toj
) AS t;

Result:

TotalTime
00:05:15.0000000

See: SqlFiddle[^]