TSQL and case when with multiple whens?

Question

I have several conditions and the result for those should be the same. I searched the net and found stuff like this:

CASE ProductLine
     WHEN 'R' THEN 'Road'
     WHEN 'M' THEN 'Mountain'
     WHEN 'T' THEN 'Touring'
     WHEN 'S' THEN 'Other sale items'
     ELSE 'Not for sale'
  END

That's nice, but not what I need, for me its more like R,M,T and S all have the same result and A,B,C,D for example don't have. How would I do this? I cant connect with OR, or at least I did not manage to :). Something like this maybe?

CASE ProductLine
     WHEN 'R' OR 'M' OR ... THEN 'Road'
     ELSE 'Not for sale'
  END

Answer 1

Change to a "searched" CASE expression. You have a "simple" CASE expression above

CASE
   WHEN  ProductLine IN ('R', 'M', ...) THEN 'Road'
   ELSE 'Not for sale'
END

From the MSDN link above:

Simple CASE expression: 
CASE input_expression 
     WHEN when_expression THEN result_expression [ ...n ] 
     [ ELSE else_result_expression ] 
END 

Searched CASE expression:
CASE
     WHEN Boolean_expression THEN result_expression [ ...n ] 
     [ ELSE else_result_expression ] 
END