Error en mysql: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-25, 25' at line 8select f.id, f.usuari_id, f.pare_id, f.titol, UNIX_TIMESTAMP(f.data_creacio) data_creacio, f.pare_inicial_id
    from rec_forum f, rec_usuaris u
    where f.pare_id=0
    and f.pare_inicial_id!=0
    and u.id = f.usuari_id
    and u.estat = 'A'
    order by f.data_creacio desc
    limit -25, 25