How to find the difference between two dates in same column? - sql

Question

I have a table SO_STATUS that writes a record for each status change for a service order (we'll call the Service_Order_ID "Job_ID"). Job_ID references SERVICE_ORDER table. When the service order is initialized, a record is written for that status type of "open" (StatusType 2) which shows the datetime. Then another record is written in the status table for when it is "in progress" (StatusType 1). And also when the service order is "closed", another record written in the status table (StatusType 3). There are also other status types that may happen, but these are the most common. The data in the SO_STATUS table looks like this:
id Date Job_ID StatusTypeID EmployeeID
1 2012-01-01 09:05:00.000 51 2 5
2 2012-01-01 10:00:00.000 52 2 12
3 2012-01-01 10:01:00.000 51 1 5
4 2012-01-01 12:15:00.000 53 2 8
5 2012-01-01 12:16:00.000 51 3 5
6 2012-01-01 13:00:00.000 52 1 12
7 2012-01-01 14:00:00.000 52 3 12
8 2012-01-01 14:15:00.000 53 1 8
9 2012-01-01 15:00:00.000 54 2 11
10 2012-01-01 16:30:00.000 53 3 8
11 2012-01-01 15:00:00.000 54 1 11
12 2012-01-01 16:30:00.000 54 3 11
I need to be able to find the time elapsed between each status change of each Job_ID. Essentially, the duration of time spent from open to close for the job.
Output would look something like (EmployeeName would be referenced from the EMPLOYEE table):
Job_ID Duration EmployeeName
51 03:11:00 Kyle
52 04:00:00 Chris
53 04:15:00 Fred
54 01:30:00 John
How would I go about getting this type of output? Thank you.

Answer 1

Why dont you use:
SELECT DATEDIFF (anyparticularunit, ' 2012-01-01 09:05:00.000', ' 2012-01-01 15:00:00.000')
Go through following link for datediff:
http://msdn.microsoft.com/en-us/library/ms189794.aspx
Also follow this link to get different exmples:
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=56126
Hope you will put further where conditions.

Answer 2

This this one -
SET NOCOUNT ON;
DECLARE #duration TABLE
(
id BIGINT IDENTITY
, [date] DATETIME
, job_id INT
, [status] VARCHAR(10)
, employee_id INT
)
INSERT INTO #duration ([date], job_id, [status], employee_id)
VALUES
('2012-01-01 09:05:00.000', 51, 'open', 5),
('2012-01-01 10:00:00.000', 52, 'open', 12),
('2012-01-01 10:01:00.000', 51, 'inprogress', 5),
('2012-01-01 12:15:00.000', 53, 'open', 8),
('2012-01-01 12:16:00.000', 51, 'closed', 5),
('2012-01-01 13:00:00.000', 52, 'inprogress', 12),
('2012-01-01 14:00:00.000', 52, 'closed', 12),
('2012-01-01 14:15:00.000', 53, 'inprogress', 8),
('2012-01-01 15:00:00.000', 54, 'open', 11),
('2012-01-01 16:30:00.000', 53, 'closed', 8),
('2012-01-01 15:00:00.000', 54, 'inprogress', 11),
('2012-01-01 16:30:00.000', 54, 'closed', 11)
SELECT
job_id
, employee_id
, work_time = CONVERT(VARCHAR(12), MAX([date]) - MIN([date]), 114)
FROM #duration
GROUP BY job_id, employee_id

Answer 3

You can use DATEDIFF to return the count (signed integer) of the specified datepart boundaries crossed between the specified startdate and enddate (see http://msdn.microsoft.com/en-us/library/ms189794.aspx)
SELECT Job_ID,
DATEDIFF(day, (SELECT MIN(Date) FROM YOUTABLE WHERE Job_ID=k.Job_ID),(SELECT MAX(Date) FROM YOUTABLE WHERE Job_ID=k.Job_ID)),
(SELECT EmployeeName FROM EmployeeTABLE WHERE EmployeeID=k.EmployeeID)) FROM YOUTABLE k

Answer 4

If your database is Oracle, you can do like this
SELECT DISTINCT JOB_ID, MAX(DATE) OVER(PARTITION BY JOB_ID)-MIN(DATE) OVER(PARTITION BY JOB_ID) AS Duration FROM TA JOIN TB .....

Answer 5

I have created some custom code to create dat and time difference, using datediff function and dividing with certain numbers to generate hours, minutes and seconds:
SELECT
Job_ID,
CAST(DATEDIFF(second, MIN(Date), MAX(Date)) / 3600 AS VARCHAR)
+ ':' + CAST((DATEDIFF(second, MIN(Date), MAX(Date)) % 3600) / 60 AS VARCHAR)
+ ':' + CAST(((DATEDIFF(second, MIN(Date), MAX(Date)) % 3600) % 60) AS VARCHAR)
FROM YOUTABLE
GROUP BY Job_ID

Answer 6

Try query given below:
Select t1.Job_ID,
Convert(varchar(5),DateDiff(HH,Min(t1.JobDate),tbl.MaxDate))+' : '+convert(varchar(5),DateDiff(s,Min(t1.JobDate),tbl.MaxDate) % 3600/60)+' : '+Convert(varchar(5),DateDiff(s,Min(t1.JobDate),
tbl.MaxDate) % 60) MinDate,t1.EmployeeName From SO_STATUS t1
Inner join (Select Max(JobDate) MaxDate, job_id From SO_STATUS Group By Job_Id)tbl on t1.Job_ID=tbl.Job_ID
Inner Join EMPLOYEE e On e.EmployeeID=t1.EmployeeID
Group By t1.EmployeeName,tbl.MaxDate,t1.Job_ID
Order By t1.Job_ID

Answer 7

Difference between two dates of different tables which has datetime format.
SELECT t1.Column_Names,
CONVERT(varchar(10),t1.CreatedOn,103)
AS CreatedOn FROM table1 t1 INNER JOIN table2 t2
ON t1.id = t2.id
WHERE CAST (t1.CreatedOn as Date)
BETWEEN #fromdate and #todate.
i have taken t1.CreatedOn as my table attribute which holds date.
#fromdate and #todate to pass dates.