Tom Lane wrote:
> Hiroshi Inoue <Inoue@tpf.co.jp> writes:
> > For example,LIMIT ALL means LIMIT 1 for optimizer and means
> > no LIMIT for executor.
> > Comments ?
>
> I don't see the point. In the context of a regular SELECT, optimizing
> that way would be wrong, because we are going to fetch all the data.
> In the context of a DECLARE CURSOR, we already have a bias for fast-
> start plans, so why do we need another?
>
Hmm,I missed somthing ?
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 ?
Regards, Hiroshi Inoue.