Re: [INTERFACES] ECPG and sqlda

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От Michael Meskes
Тема Re: [INTERFACES] ECPG and sqlda
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Msg-id 20000107211647.A420@fam-meskes.de
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Ответ на ECPG and sqlda  (Tim Kane <timk@hotgames.com>)
Список pgsql-interfaces
On Thu, Jan 06, 2000 at 06:46:52PM +1100, Tim Kane wrote:
> There doesn't seem to be any support for the SQLDA...

Correct. ECPG does not support SQLDA. AFAIK SQLDA is not standard anyway.

> Does this mean that I can't do proper dynamic queries?
> 
> eg:    select * from :table where :field = :result

You can. How about this?

exec sql prepare STMT from "select * from ? where ? = ?";

exec sql declare cur cursor for STMT;

exec sql open cur using :table, :field, :result;

> Somebody please tell me that I'm wrong!
> The test files in the source don't seem to utilize this feature at all.

test[2|3].pgc do use prepare.

> ECPGstatus() seems to have changed to ECPGstatus (int, const char);
> What exactly am I supposed to pass to this function?

The first argument is the line-number (i.e. __LINE__). The second is the
connection name. If you do not have different connections you can use NULL
as connection name or just use "CURRENT".

Michael
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