SQL Query to find start date time, end date time, time difference and last row of a particular ID

Question

I have a table as below

ID	DateTime	Summary
1	2022-06-21 19:03:30.783	XSR
1	2022-06-21 19:04:40.763	GKE
1	2022-06-21 19:05:35.483	ERE
2	2022-07-20 11:01:20.783	BMR
2	2022-07-20 12:03:39.142	PER

It should produce an output as below. ie start datetime and end datetime of every ID. Also output the end time's Summary value.

Expected Result :

ID	Start DateTime	End DateTime	Summary
1	2022-06-21 19:03:30.783	2022-06-21 19:05:35.483	ERE
2	2022-07-20 11:01:20.783	2022-07-20 12:03:39.142	PER

Code I tried

select MIN (t1.DateTime) as StartTime, MAX (t1.DateTime) as EndTime, datediff(MINUTE, min(t1.DateTime), max(t1.DateTime)) as 'RunTime (Mins)'
,max (t1.Summary)
from table t1

Answer 1

Try this:

SELECT 
  t1.id, 
  MIN(t1.[datetime]) AS [Starttime],
  MAX(t1.[datetime]) AS [Endtime],
  MAX(t2.summary) AS [Summary]
FROM Table t1, Table t2
WHERE t1.id = t2.id
  AND t2.[datetime] = (SELECT 
                         MAX([datetime]) 
                       FROM Table t3
                       WHERE t2.id = t3.id)
GROUP BY t1.id
;