Обсуждение: Calling a function via ODBC

Hi,

I have postgres installed on my Machine (MacOSX) and connect to it via
ODBC from my C app.

All works ok (select, insert, update and so on).


Now I made the following simple function:

CREATE OR REPLACE FUNCTION concat_text (TEXT, TEXT) RETURNS TEXT AS '

    BEGIN

        RETURN $1 || $2;

    END;

' LANGUAGE 'plpgsql';


and called it succesfully doing:

SQLExecDirect(... ""select concat_text('val', 'erio')"" ...)

and fetching the result with SQLFetchScroll etc..., all works ok.


SO WHICH IS THE QUESTION?

THE QUESTION IS:

Is there a way to call my func using the ODBC syntax:

{? =  CALL concat_text(?, ?)}

using SQLBindParameter to bind variable (input/output) to '?' and
getting return value directly in a bound var (without any Fetch) (see
http://www.ddart.net/mssql/sql70/odbcht10_1.htm )?


Does someone have an example in using SQLBindParameter to set
parameter IN and get return value OUT?


Thanks for help

<fontfamily><param>Geneva</param>==================================================================

Valerio Ferrucci                        Tabasoft Sas

ferrucci@tabasoft.it                    http://www.tabasoft.it

</fontfamily>
Hi,
I have postgres installed on my Machine (MacOSX) and connect to it via
ODBC from my C app.
All works ok (select, insert, update and so on).

Now I made the following simple function:
CREATE OR REPLACE FUNCTION concat_text (TEXT, TEXT) RETURNS TEXT AS '
    BEGIN
        RETURN $1 || $2;
    END;
' LANGUAGE 'plpgsql';

and called it succesfully doing:
SQLExecDirect(... ""select concat_text('val', 'erio')"" ...)
and fetching the result with SQLFetchScroll etc..., all works ok.

SO WHICH IS THE QUESTION?
THE QUESTION IS:
Is there a way to call my func using the ODBC syntax:
{? =  CALL concat_text(?, ?)}
using SQLBindParameter to bind variable (input/output) to '?' and
getting return value directly in a bound var (without any Fetch) (see
http://www.ddart.net/mssql/sql70/odbcht10_1.htm )?

Does someone have an example in using SQLBindParameter to set parameter
IN and get return value OUT?

Thanks for help
==================================================================
Valerio Ferrucci                        Tabasoft Sas
ferrucci@tabasoft.it                    http://www.tabasoft.it

Valerio Ferrucci wrote:
>
> Hi,
> I have postgres installed on my Machine (MacOSX) and connect to it via ODBC from my C app.
> All works ok (select, insert, update and so on).
>
> Now I made the following simple function:
> CREATE OR REPLACE FUNCTION concat_text (TEXT, TEXT) RETURNS TEXT AS '
> BEGIN
> RETURN $1 || $2;
> END;
> ' LANGUAGE 'plpgsql';
>
> and called it succesfully doing:
> SQLExecDirect(... ""select concat_text('val', 'erio')"" ...)
> and fetching the result with SQLFetchScroll etc..., all works ok.
>
> SO WHICH IS THE QUESTION?
> THE QUESTION IS:
> Is there a way to call my func using the ODBC syntax:
> {? = CALL concat_text(?, ?)}
> using SQLBindParameter to bind variable (input/output) to '?'
> and getting return value directly in a bound var (without any
> Fetch) (see http://www.ddart.net/mssql/sql70/odbcht10_1.htm )?

Yes. As for your example, bind the 1st parameter
as SQL_PARAM_OUTPUT and 2nd/3rd paramters as SQL_
PARAM_INPUT.

regards,
Hiroshi Inoue
    http://w2422.nsk.ne.jp/~inoue/

Can you point me to some C examples?
Thanks

>?Valerio Ferrucci wrote:
>>
>>  Hi,
>>  I have postgres installed on my Machine (MacOSX) and connect to it
>>via ODBC from my C app.
>>  All works ok (select, insert, update and so on).
>>
>>  Now I made the following simple function:
>>  CREATE OR REPLACE FUNCTION concat_text (TEXT, TEXT) RETURNS TEXT AS '
>>  BEGIN
>>  RETURN $1 || $2;
>>  END;
>>  ' LANGUAGE 'plpgsql';
>>
>>  and called it succesfully doing:
>>  SQLExecDirect(... ""select concat_text('val', 'erio')"" ...)
>>  and fetching the result with SQLFetchScroll etc..., all works ok.
>>
>>  SO WHICH IS THE QUESTION?
>>  THE QUESTION IS:
>>  Is there a way to call my func using the ODBC syntax:
>  > {? = CALL concat_text(?, ?)}
>>  using SQLBindParameter to bind variable (input/output) to '?'
>>  and getting return value directly in a bound var (without any
>>  Fetch) (see http://www.ddart.net/mssql/sql70/odbcht10_1.htm )?
>
>Yes. As for your example, bind the 1st parameter
>as SQL_PARAM_OUTPUT and 2nd/3rd paramters as SQL_
>PARAM_INPUT.
>
>regards,
>Hiroshi Inoue
>    http://w2422.nsk.ne.jp/?inoue/


--
==================================================================
Valerio Ferrucci                        Tabasoft Sas
ferrucci@tabasoft.it                    http://www.tabasoft.it