select sum(case when id = 'C' then value else -value end) as total from mytable
>>> "Ezequias Rodrigues da Rocha" <[EMAIL PROTECTED]> 2007-02-12 16:41 >>> Hi list, I would like a little help from you to get the sum value of various subsets of my table. My table is like this id | type | value 1 C 10.00 2 C 15.00 3 W 5.00 4 W 3.00 Where C is credit and w is witdraw. How do I sum all records with C and subtract with all records with type W ? Is it possible ? Ezequias