Re: [GENERAL] Fun with Cursors- how to rewind a cursor

"Postgres User" <postgres(dot)developer(at)gmail(dot)com> writes:
> On 3/1/07, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> "Postgres User" <postgres(dot)developer(at)gmail(dot)com> writes:
>>> <before opening cursor> ref_entry = 'c_entry';
>>> <after looping thru cursor> MOVE Backward All In c_entry;
>>
>> You have to use EXECUTE for the latter.

> I had tried several variations of MOVE Backward inside an Execute
> statement earlier. And now, I'm seeing this error appear again:
> ERROR: 0A000: cannot manipulate cursors directly in PL/pgSQL

Hm, you're right. This arises from the fact that _SPI_execute_plan
rejects cursor-related utility statements. While I'd never stopped
to question that before, it does seem like this restriction is a
bit pointless. Does anyone remember why it's like that?

regards, tom lane