Обсуждение: resultset metadata libpq

On 27 July 2010 13:43, Ravi Katkar <Ravi.Katkar@infor.com> wrote:
>
> From: Ravi Katkar
> Sent: Tuesday, July 27, 2010 5:45 PM
> To: 'pgsql-general@postgresql.org'; 'pgsql-odbc@postgresql.org'
> Subject: resultset metadata libpq
>
> I wanted to retrieve the below metadata information for a column from
> resultset.
>
> Column name,  ( PQfname )
>
>  type, (PQftype )
>
>  precision, ( ?)
>
>  scale, (?)
>
> nullability(?)

Take a look at http://www.enterprisedb.com/documentation/libpq-concepts.html.
 You can find the number of columns of a PGresult then iterate over
the columns to get column names, data types etc.

Will

Hi,

I had referred below link
I could not able to locate or identify api to retrieve information like precision, scale, nullability.

Thanks,
Ravi Katkar

-----Original Message-----
From: willfurnass@googlemail.com [mailto:willfurnass@googlemail.com] On Behalf Of William Furnass
Sent: Tuesday, July 27, 2010 6:21 PM
To: Ravi Katkar
Cc: pgsql-general@postgresql.org
Subject: Re: [ODBC] resultset metadata libpq

On 27 July 2010 13:43, Ravi Katkar <Ravi.Katkar@infor.com> wrote:
>
> From: Ravi Katkar
> Sent: Tuesday, July 27, 2010 5:45 PM
> To: 'pgsql-general@postgresql.org'; 'pgsql-odbc@postgresql.org'
> Subject: resultset metadata libpq
>
> I wanted to retrieve the below metadata information for a column from
> resultset.
>
> Column name,  ( PQfname )
>
>  type, (PQftype )
>
>  precision, ( ?)
>
>  scale, (?)
>
> nullability(?)

Take a look at http://www.enterprisedb.com/documentation/libpq-concepts.html.
 You can find the number of columns of a PGresult then iterate over
the columns to get column names, data types etc.

Will