ssinger_pg at sympatico.ca wrote:
>
> Once you start performing execute scripts only on some nodes then your 
> data and/or schema won't be the same everywhere in the cluster and in 
> any master/slave replication system if you don't do this very 
> carefully your going to get burned.
>
> Maybe we should start with trying to decide what the purpose of 
> execute script is.

My original purpose why I used EXECUTE ONLY ON was similar to this case 
by Jeff Frost:

http://lists.slony.info/pipermail/slony1-general/2006-November/005216.html

To summarize, I had a non-replicated table which had a foreign key to a 
replicated table on a subscriber node. When trying to drop the 
non-replicated table, I run into problems with Slony's "catalogue 
fiddling", and EXECUTE ONLY ON was the only (reasonable) way to fix 
things. Fortunately I had up-to-date backups when I discovered that the 
table was dropped at both nodes.. :)

Regards,

MP