Is there any PostgreSQL function, that, given an OID and a table (class) name, would true true (or the OID) if the OID is a member of that class? I want to write something like: create function ISA(oid, name) returns oid as ' select oid from $2* where oid = $1 ' language 'sql'; (But, of course, this doesn't work). -- Will Fitzgerald I/NET, Inc.
