Peter Geoghegan escribió:
> > It is possible to code set-returning functions in a suspend-and-resume
> > style, but none of the available PLs do that; you have to get down to
> > the C level.
>
> Aren't my requirements sufficiently common to justify developing a
> mechanism to report progress back to client applications during batch
> operations and the like? This seems like a nice thing to have, that
> would be broadly useful, perhaps as a contrib module. Obviously I have
> no idea of the amount of effort developing such a feature would
> entail.
We've had several requests for progress reporting thingies of all kinds.
The amount of effort is not insignificant, which is probably why nothing
has gotten done yet ...
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.