Re: ECPG and dynamic SQL

The app GtkSQL does what you need, but it is implimented in libpq. It will
give you a general idea of how to do it.

Do a google search.

There is another app that is similar (libpq also) a little less complex, so
easier to follow, called dbui-0.4.0 A Google search will give you a URL

cheers
Jim Parker

On 29 Jul 2002, Cliff Wells wrote:
> Date: 29 Jul 2002 15:23:30 -0700
> To: pgsql-interfaces <pgsql-interfaces(at)postgresql(dot)org>
> From: Cliff Wells <LogiplexSoftware(at)earthlink(dot)net>
> Sender: pgsql-interfaces-owner(at)postgresql(dot)org
> Subject: [INTERFACES] ECPG and dynamic SQL
>
> I'm porting an application from a proprietary database format to
> PostgreSQL using ECPG. My problem is that the application uses a single
> function to get a record from the database. Based upon which table is
> being accessed, it dynamically calculates column sizes and returns the
> record in a structure. Creating the query itself is fairly
> straightforward, but I am unable to figure out how to retrieve the
> _results_ of the query as I have no place to store them (since I don't
> know what they will be until the function is called I can't use a EXEC
> SQL DECLARE section).
>
> It seems Oracle's sqlda would be a possible solution, but I understand
> that isn't implemented in PostgreSQL.
>
> What is the best way to store the results of a dynamic query without
> knowing what the results will be beforehand (using ECPG, if possible)?
>
> I'm using PostgreSQL 7.2.1 on SCO OpenSwerver.
>
> --
> Cliff Wells, Software Engineer
> Logiplex Corporation (www.logiplex.net)
> (503) 978-6726 x308 (800) 735-0555 x308
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 1: subscribe and unsubscribe commands go to majordomo(at)postgresql(dot)org