Re: Have psql show current sequnce values - (Resubmission)

Dhanaraj M <Dhanaraj(dot)M(at)Sun(dot)COM> writes:
> Sorry for resubmitting this patch.
> Just now I found a problem.
> Instead of assigning initial sequence value to 1,
> I assign LLONG_MAX to avoid the buffer overflow problem.
> Please find the current version here.

This patch is a mess. In the first place, it's completely unkosher for
an application to scribble on a PGresult's contents, even if you do take
steps like the above to try to make sure there's enough space. But said
step does not work anyway -- LLONG_MAX might not exist on the client, or
might exist but be smaller than the server's value.

Another problem with it is it's not schema-aware and not proof against
quoting requirements for the sequence name (try it with a mixed-case
sequence name for instance). It also ought to pay some attention to
the possibility that the SELECT for last_value fails --- quite aside
from communication failure or such, there might be a permissions problem
preventing the last_value from being read.

regards, tom lane