It sounds like you are doing the kind of thing that table inheritance is
supposed to solve.  If you use inheritance in your DB tables, you could get
exactly what you are asking for from slony right now.

-Dan

Daniel J. Wright                           wright at pair.com
Lead Software Developer, pairNIC   https://www.pairnic.com
pair Networks, Inc.                    http://www.pair.com

On Thu, 22 Jul 2004, David Parker wrote:

> In one area of our application, we would like to be able to capture an
> update to a master table, and select the target replication table based
> on some key value in the update data, e.g. "if key_field == A, replicate
> to table X on host A; if key_field == B, replicate to table X on host
> B", etc.