> > > When the parallel safety of some of these objects is changed, it's costly to
> reflect it on the parallel safety of tables that depend on them. So, we don't do
> it. Instead, we provide a utility function pg_get_parallel_safety('table_name')
> that returns records of (objid, classid, parallel_safety) that represent the
> parallel safety of objects that determine the parallel safety of the specified
> table. The function only outputs objects that are not parallel safe.
> > >
> >
> > So, users need to check count(*) for this to determine
> > parallel-safety? How about if we provide a wrapper function on top of
> > this function or a separate function that returns char to indicate
> > whether it is safe, unsafe, or restricted to perform a DML operation
> > on the table?
>
> Such wrapper function make sense.
Thanks for the suggestion, and I agree.
I will add another wrapper function and post new version patches soon.
Best regards,
houzj
