Tom Lane wrote:
> It would be simple enough to fix nodeSubplan.c to copy the data into
> an upper-level Slot rather than a bare tuple. But this makes me wonder
> how many other places are like this. In the past there wasn't that much
> benefit to pulling data from a Slot instead of a bare tuple, so I'm
> afraid we might have a number of similar gotchas we'd have to track
> down.
I compare this to adding CHECK_FOR_INTERRUPTS(): let's declare that
every usage of bare tuples is a not-very-serious bug, and we can fix
them one by one as we come across them.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.