resultset metadata libpq

________________________________
From: Ravi Katkar
Sent: Tuesday, July 27, 2010 5:45 PM
To: 'pgsql-general@postgresql.org'; 'pgsql-odbc@postgresql.org'
Subject: resultset metadata libpq

Hi List,

I am using libpq c api to connect postgresql server.

I wanted to retrieve the below metadata information for a column from resultset.

Column name, ( PQfname )
type, (PQftype )
precision, ( ?)
scale, (?)
nullability(?)

Thanks in advance

Regards,
Ravi Katkar

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