Trying to write a tricky query

Hello,

   I have a list of values,

('a', 'b', 'c', 'd')

and I am trying to find out which of those values is NOT in the list returned from this query

SELECT LETTER FROM LETTER_TABLE Is there a way I can write a query to extract this information? To complicate things, I'm using Oralce 8 on Solaris.

Thanks for your help, - Dave Received on Tue Jun 28 2005 - 09:47:11 CDT