From: Pavel PaJaSoft Janousek <janousek@fonet.cz>
To: Dave Broudy <shaggy@broudy.net>
Cc: PgSQL Interfaces <pgsql-interfaces@postgresql.org>
Subject: Re: [INTERFACES] ecpg cursors and scope
Date: Wed, 21 Apr 1999 12:36:59 +0200
Message-ID: <00ab01be8be2$e4581480$0200a8c0@server.fonet2.cz> (raw)
>A) In seperate functions:
>
>func1() {
> exec sql declare test_cur for ...
>}
>func2() {
> exec sql declare test_cur for ... /* same or different sql */
>}
>
>B) In an if:
>
>if(...) {
> exec sql declare test_cur for ...
>} else {
> exec sql declare test_cur for ... /* same or different sql */
>}
>
>These both yield "cursor test_cur already defined"
I try this too, but I got the same error... )ECPG distributed with
PostgreSQL 6.4.2)
I think, that principly is correct contructions like this:
if (condition)
{
exec sql declare cur cursor for select count (*) from tmp where
col1 - :num;
}
else
{
exec sql declare cur cursor for select count (*) from tmp;
}
exec sql whenever not found continue;
exec sql open cur;
exec sql whenever not found do break;
while (1)
{
exec sql fetch in cur into :num1;
}
But this isn't allow too, because second exec sql declare.... - in this
line I got the same message...:-(
One time I wrote this exec<space><space>sql - and ECPG say parse error
too, but I forgot, that bad was only this two spaces between 'exec' and
'sql'....
Next, some 'interesting' situations I got when I use exec sql
whenever... - scope for this is not as the program running, but as the
source is parsing... - this is ...'-)
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To: pgsql-interfaces@postgresql.org
Cc: janousek@fonet.cz, shaggy@broudy.net
Subject: Re: [INTERFACES] ecpg cursors and scope
In-Reply-To: <00ab01be8be2$e4581480$0200a8c0@server.fonet2.cz>
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