Date: Sat, 24 Apr 1999 17:28:51 +0200
From: Michael Meskes <meskes@postgresql.org>
To: Pavel PaJaSoft Janousek <janousek@fonet.cz>
Cc: PgSQL Interfaces <pgsql-interfaces@postgresql.org>
Subject: Re: [INTERFACES] ecpg cursors and scope
Message-ID: <19990424172851.E790@gmx.net>
Mail-Followup-To: Pavel PaJaSoft Janousek <janousek@fonet.cz>,
	PgSQL Interfaces <pgsql-interfaces@postgresql.org>
References: <00bb01be8d61$ad46e040$0200a8c0@server.fonet2.cz>
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In-Reply-To: <00bb01be8d61$ad46e040$0200a8c0@server.fonet2.cz>;
	from Pavel PaJaSoft Janousek on Fri, Apr 23, 1999 at 10:17:03AM
	+0200

On Fri, Apr 23, 1999 at 10:17:03AM +0200, Pavel PaJaSoft Janousek wrote:
>     Thanks, but in PostgreSQL or ECPG manual isn't this... and I forgot

Shame on me. :-( Yes, the docs need much more work.

> syntax from Oracle...Could you put some example (the best is the contruction
> below)?

Please check the test source under .../ecpg/test.

How about this

if (cond)
     strcpy(query, "select count (*) from tpm");
 else
     strcpy(query, "select count (*) from tpm where col1 = ?");

 exec sql prepare MM from :query;
 exec sql declare prep cursor for MM;

 exec sql open prep using :cislo1;

 exec sql whenever not found break;
 while (1)
 {
     exec sql fetch in cur into :cislo2;
 }
 
But speaking of this. It appears ecpg cannot do prepares without variables
at the moment. This is a bug. I just didn't see this so far.

Michael
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