create or replace function pgq.quote_fqname(i_name text)
returns text as $$
-- ----------------------------------------------------------------------
-- Function: pgq.quote_fqname(1)
--
--      Quete fully-qualified object name for SQL.
--
--      First dot is taken as schema separator.
--
--      If schema is missing, 'public' is assumed.
--
-- Parameters:
--      i_name  - fully qualified object name.
--
-- Returns:
--      Quoted name.
-- ----------------------------------------------------------------------
declare
    res     text;
    pos     integer;
    s       text;
    n       text;
begin
    pos := position('.' in i_name);
    if pos > 0 then
        s := substring(i_name for pos - 1);
        n := substring(i_name from pos + 1);
    else
        s := 'public';
        n := i_name;
    end if;
    return quote_ident(s) || '.' || quote_ident(n);
end;
$$ language plpgsql strict immutable;