Re: pgsql/src/backend/nodes (copyfuncs.c outfuncs.c print.c)

Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp> writes:
> How would be the behavior of the following command sequence ?

> begin;
> declare myc cursor for select * from t1 limit 1;
> fetch in myc;
> fetch in myc;

> Could the last fetch return a row ?

As the code now stands, the second fetch would return nothing.
I think this is clearly what any reasonable person would expect
given the LIMIT 1 clause.

LIMIT ALL is a different story, because there's no semantic difference
between writing LIMIT ALL and writing no limit clause at all. We have
the option to create a distinction for planning purposes, however.
Question is do we need one?

regards, tom lane