TABLE FUNCTION CAST TYPE DATAWINDOW POWERBUILDER 12.5

Hi, i have the following pl/sql Oracle function:

  FUNCTION fun_vir_anti_detail (

    av_id_codct  IN cl_strutture.id_codct%type,

    an_id        IN cl_anagrafiche.id_anag%type

  ) RETURN wa_typ_epn_talk_vir_ant_tab;

END;

the return type 'wa_typ_epn_talk_vir_ant_tab' is define as:

CREATE OR REPLACE TYPE EMOINT.wa_typ_epn_talk_vir_ant_tab AS TABLE OF wa_typ_epn_talk_vir_ant_row

and 'wa_typ_epn_talk_vir_ant_row' is:

CREATE OR REPLACE TYPE EMOINT.wa_typ_epn_talk_vir_ant_row AS object (

  vir_pazs_list    wa_typ_epn_talk_vir_pazs_tab,

  rich_ant_list    wa_typ_epn_talk_rich_ant_tab,

  test_coombs_list wa_typ_epn_talk_coombs_tab,

  cod_errore       VARCHAR2(50),

  descr_errore     VARCHAR2(200)

)

I need to get data using PB datawindow from the 'wa_typ_epn_talk_vir_ant_row' field, for example 'rich_ant_list' define as this type:

CREATE OR REPLACE TYPE EMOINT.wa_typ_epn_talk_rich_ant_tab AS TABLE OF wa_typ_epn_talk_rich_ant_row

where 'wa_typ_epn_talk_rich_ant_row' is:

CREATE OR REPLACE TYPE EMOINT.wa_typ_epn_talk_rich_ant_row AS object (

  id_ric_abdy     NUMBER(9),

  id_anag         NUMBER(7),

  id_typc         VARCHAR2(4),

  rc_typc         VARCHAR2(3),

  id_unita        NUMBER(9),

  dtesecuz        DATE,

  esito_ric_abdy  VARCHAR2(3),

  operat          VARCHAR2(8),

  dtoperat        DATE,

  dtmedico        DATE,

  proven          VARCHAR2(30 BYTE),

  dtprel          DATE,

  dtstoriciz      DATE,

  tipo_storicz    VARCHAR2(1),

  note            VARCHAR2(500),

.

.

.

.

.

)

i would like to retrieve data from the 'rich_ant_list' field of the 'wa_typ_epn_talk_rich_ant_row' type

but i don't know if it's possibile.

I could write this DW SQL :

SELECT

    rich_ant_list

FROM TABLE ( CAST (emoint.wa_pkg_epn_int_talk.fun_vir_anti_detail (

                              '0201',

                              1)

AS EMOINT.wa_typ_epn_talk_vir_ant_tab))

but when i try to retrieve data the error is:

" Select Error: ORA-00932: inconsistent datatypes: expected %s got %s"

and the reason is clear, it's beacuse it tried to retrieve data from the field "rich_ant_list"

that is a table-field with different type.

I don't know if it's possible to write a subquery and cast the result type as 'wa_typ_epn_talk_rich_ant_tab'.

I tried many times and different ways but it doesn't works.

Any suggestions?

I'm using PB12.5

Thanks a lot

Luca