Question

Lets say I have a table that is like this

 x      y  
10    5  
10    8  
10    12  
11    9  
11    14  
11    12  
14    12  
14    5  
14    11    

I need to return all the x group that has the same value if y = 5
So I would need a query that would return me the x group that has the value 10 or 14.
Query:

select x, y from table ...

Should return me something like this :

x y  
10 5  
10 8  
10 12  
14 12  
14 5  
14 11

Answer 1

select x, y
from your_table
where x in 
(
  select distinct x
  from your_table
  where y = 5
)