Question : NVL, case statement, or another way?

I am running nested queries with NVL but not getting the results I want.  I want the reason to show why someone didnt take a test, but if they did then show their score. I am getting the reason, but the score isnt showing when the reason is blank. Is there another way to achieve this or am I using NVL wrongly?

select
nvl((select justify from tech b where a.emplid=b.emplid),(select score from tech2 b where a.emplid =b.emplid) )as Score
from
employees a

Answer : NVL, case statement, or another way?

You can use coalesce to retrieve the first non-null value. See attached.