sql datediff hours and minutes
Small change like this can be done
SELECT EmplID
, EmplName
, InTime
, [TimeOut]
, [DateVisited]
, CASE WHEN minpart=0
THEN CAST(hourpart as nvarchar(200))+':00'
ELSE CAST((hourpart-1) as nvarchar(200))+':'+ CAST(minpart as nvarchar(200))END as 'total time'
FROM
(
SELECT EmplID, EmplName, InTime, [TimeOut], [DateVisited],
DATEDIFF(Hour,InTime, [TimeOut]) as hourpart,
DATEDIFF(minute,InTime, [TimeOut])%60 as minpart
from times) source