How do I combine 2 select statements into one?

Question

I am a noob when it comes to SQL syntax.

I have a table with lots of rows and columns of course :P Lets say it looks like this:

      AAA BBB CCC DD         


        

Answer 1

select t1.* from 
(select * from TABLE Where CCC='D' AND DDD='X') as t1,
(select * from TABLE Where CCC<>'D' AND DDD='X') as t2

Another way to do this!