help with subquery! returns more than 1 row

Question

i dont understand the problem with returning multiple rows:

here is my table BBC:

name    region  area    population  gdp
Afghanistan South Asia  652225          


        

Answer 1

This is because you are trying to compare region to a table of values. Instead, try using in:

select name 
from bbc 
where region in 
    (select region from bbc where name='India' or name='Iran')