# File lib/dbi/handles/database.rb, line 125
        def select_all(stmt, *bindvars, &p)
            sanity_check(stmt)
            rows = nil
            execute(stmt, *bindvars) do |sth|
                if block_given?
                    sth.each(&p)
                else
                    rows = sth.fetch_all 
                end
            end
            return rows
        end