upgrade 8.1.4 -> latest, sort order subquery

i decide this weekend to upgrade to the latest stable version from an
8.1.4 . Upgrade went smootly, as usual, but today, i've got some
phonecalls of something weird. The query is as follows :


registratie=# select * from module_info where type_module_id = 1;
   naam  | korte_beschrijving |  kolom_naam   |   xul_opties    |
type_veld_id | lengte | is_verplicht | type_module_id
--------+--------------------+---------------+-----------------+--------------+--------+--------------+----------------
  alg_02 | naam               | naam          |                 |

3 |      0 | f            |              1
  alg_03 | voornaam           | voornamen     |                 |

3 |      0 | f            |              1
  alg_01 | anoniem            | anoniem       |                 |

2 |      0 | f            |              1
  cl_01  | geslacht           | geslacht      |                 |

1 |      0 | t            |              1
  cl_19  | geboortedatum      | geboortedatum | hide_clock,true |

7 |      0 | f            |              1
  cl_02  | leeftijd           | leeftijd      |                 |

1 |      0 | t            |              1
  cl_15  | origine            | origine       |                 |

1 |      0 | f            |              1
(7 rows)


i combine this with the next query in a subquery

registratie=# select * from get_parent_type_modules(1);
NOTICE:   first query
  get_parent_type_modules
-------------------------
                        1
(1 row)


The resulting query , which should return the same result as the first one

registratie=# select * from module_info where type_module_id in
             (select * from get_parent_type_modules(1));
NOTICE:   first query
   naam  | korte_beschrijving |  kolom_naam   |   xul_opties    |
type_veld_id | lengte | is_verplicht | type_module_id
--------+--------------------+---------------+-----------------+--------------+--------+--------------+----------------
  cl_15  | origine            | origine       |                 |

1 |      0 | f            |              1
  cl_02  | leeftijd           | leeftijd      |                 |

1 |      0 | t            |              1
  cl_19  | geboortedatum      | geboortedatum | hide_clock,true |

7 |      0 | f            |              1
  cl_01  | geslacht           | geslacht      |                 |

1 |      0 | t            |              1
  alg_01 | anoniem            | anoniem       |                 |

2 |      0 | f            |              1
  alg_03 | voornaam           | voornamen     |                 |

3 |      0 | f            |              1
  alg_02 | naam               | naam          |                 |

3 |      0 | f            |              1
(7 rows)


The order is completely ignored, although there is an order by in the view
'module_info'



jef peeraer