Re: CURSOR OR OFFSET/LIMIT

On Apr 6, 2006, at 10:48 AM, Kaloyan Iliev wrote:

> If I use cursors it's better but my problem is that cursors live  
> only in the current transaction.
> So when the Web Server finish I've lost the transaction and the  
> cursor.


Cursors can live outside the transaction if you declare them WITH  
HOLD specified. But that still may not help you in a web environment  
if you want to break the results into pages served on separate  
requests (and possibly different connections).

http://www.postgresql.org/docs/8.1/interactive/sql-declare.html

> Is there a way to save the cursor between separe Browser request  
> (and to give it time to live)?

Sure, but you need to add a lot of connection management to do this.  
You would need to keep track of the cursors and make sure a  
subsequent request uses the right connection.






John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL