That doesn't look terribly hard to rewrite as a legal Postgres query,
I'll take a look at it sometime in the next few days.
It may be that no one bothered to translate it because the feature
wasn't really implemented in the equivalent ACS Classic version, so
that's one thing I'd check first. aD has a history of issuing
releases with incomplete snippets of not-fully-implemented features,
which in some cases were just ignored in the porting effort.
But then again this might've just been an oversight by whoever ported
this particular page, probably me...
