Gaetano Mendola <gmendola@mbigroup.it> writes:
> I can immagine a case when a lower module exports a view to upper layer stating
> the interface as list of fields:
> first_name, last_name, ....
> with an *hidden* field that is a function call that updates the statistics on
> how many time a given record was selected, then this technique can not be used
> anymore starting with 8.2.x.
You're living in a dream world if you think that works reliably in *any*
version of Postgres. But for starters, what is your definition of
"selected" --- pulled from the physical table? Accumulated into an
aggregate? Delivered as a recognizable row to the client? Delivered N
times to the client due to joining N times to some other table?
regards, tom lane
