Re: Database connectivity using ECPG

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От Shoaib Mir
Тема Re: Database connectivity using ECPG
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Msg-id bf54be870607131059x10b12e82s8093c5a1f0f55ab7@mail.gmail.com
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Ответ на Re: Database connectivity using ECPG  (John Purser <jmpurser@gmail.com>)
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Hi Jasbinder,

You will have to build the libecpg lib from source first and then you can build your C source (got from .pgc file using ecpg) using something like this:

cc -I <postgres include folder> -c sample.c
cc -o sample sample.o -L <folder where libecpg is located> -lecpg

Thanks,

Shoaib Mir
EnterpriseDB

On 7/13/06, John Purser < jmpurser@gmail.com> wrote:
On Thu, 13 Jul 2006 13:22:49 -0400
"Jasbinder Bali" < jsbali@gmail.com> wrote:

> Hi,
>
> I'm using ECPG to connect to my postgres database. Doing it for the
> very first time in my life.
>
> The name of my database is postgres and uses a trusted connection.
> So, i don't think it needs any authentication parameteres like a
> user name and password.
>
> I have the follwoing line of code in my .pgc file for the database
> connectivity:-
>
> EXEC SQL CONNECT TO postgres;
>
> after compiling my .c file, i get the following error
>
> In function `main':ecpg_test.c:(.text+0x5d): undefined reference to
> `ECPGconnect'
>
> Can any1 tell me wot is this all about???
>
> EXEC SQL CONNECT TO postgres; gets converted to
> { ECPGconnect(__LINE__, 0, "postgres" , NULL,NULL , NULL, 0); }
> after ECPG does its internal conversion from .pgc to .c
>
> Regards,
> ~Jas
>

It has been my impression that PosgreSQL REALLY likes to know who it's
talking to.  I'd include a user name with my connection string at the
least.

John Purser

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