Josh Berkus wrote:
> All,
>
> > I'll note that we currently prevent adding RETURNING to a *conditional* DO
> > INSTEAD rule. This means that if we have a conditional DO INSTEAD rule
> > which inserts into a different table than the final unconditional rule,
> > we'll be RETURNING wrong or empty values. Mind you, that's a pretty
> > extreme corner case.
>
> FYI, after some tinkering around, I've found that RETURNING is 100%
> incompatible with any table which has conditional DO INSTEAD rules; there's
> just no way to make it work and return any intelligible data. This would be
> a completely corner case, except that people use conditional DO INSTEAD rules
> heavily with partitioning (and yes, real users are complaining).
>
> I don't see this as super-urgent to fix for 8.3, but can we put it up as a
> TODO?
>
> -- Make it possible to use RETURNING together with conditional DO INSTEAD
> rules, such as for partitioning setups.
Added to TODO:
* Make it possible to use RETURNING together with conditional DO INSTEAD rules, such as for partitioning setups
http://archives.postgresql.org/pgsql-hackers/2007-09/msg00577.php
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +