Two things that could be changed from this example to make it more useful:
-Document at least a little bit more how this is different from the
"all/all" rule. I can imagine users wondering "do I use this instead of
the other one? In addition? Is it redundant if I have 'all' in there?
A little more description here aiming at the expected FAQs here would
make this much more useful.
-The default database is based on your user name, which is postgres in
most packaged builds but not if you compile your own. I don't know
whether it's practical to consider substituting that into this file, or
if it's just enough to mention that as an additional doc comment.
--
Greg Smith 2ndQuadrant US greg@2ndQuadrant.com Baltimore, MD
PostgreSQL Training, Services, and 24x7 Support www.2ndQuadrant.us