qualified column names

jdbc and I suspect odbc have a requirement to return the table, and
schema of a column in a result set.

for jdbc at least a possible solution is to return

schema.table.column for each column returned. This could be turned
off/on using  GUC variable.

functions, and computed fields can just return the column name as they
don't belong to a schema or table.

Does anyone have any other requirments?
-- 
Dave Cramer 
Cramer Consulting