Question

I have a table like this:

NAME, SURNAME, TIME_SESSION

John, White, Morning
John, White, Evening
Alexander, Black, Morning
Carl, Yellow, Morning
Carl, Yellow, Afternoon
James, Red, Morning
James, Red, Evening

I have to pick up all the elements from this table where time_session = ‘Morning’ but without to pick up the records which also have the time_session=’Evening’ or time_session = ‘Afternoon’. The result must be in this example:

Alexander, Black, Morning.

Any advices are welcome.

Answer 1

Or alternatively (a different approach than Guffa’s reply), you can use a single query with an IF EXISTS():

SELECT Name, Surname, Time_Session
FROM dbo.YourTable t1
WHERE t1.Time_Session = 'Morning'
AND NOT EXISTS (SELECT * FROM dbo.YourTable t2 
                WHERE t1.NAME = t2.Name AND t1.Surname = t2.Surname 
                  AND t2.Time_Session IN ('Afternoon', 'Evening'))