Does anyone know what the "correct" behaviour for a scroll cursor should be
when you've scrolled past the end ?
If you take this SQL for example :
create temp table sometab ( a integer); insert into sometab values(1); insert into sometab values(2); insert into
sometabvalues(3); begin work;
declare c1 scroll cursor for select * from sometab; fetch next from c1; fetch next from c1; fetch next from c1;
fetchnext from c1; fetch prior from c1; fetch prior from c1; fetch prior from c1;
The first 4 fetches work as expected and return 1,2,3, and the 4th fetch
returns no rows as its at the end of the list...
** But ** - when I do the fetch prior, I would have expected it to go back to
the '2' row, not the '3' row...
ie - under postgresql it appears we've scrolled *past* the last row and need
an additional fetch to get back to our last row..
For reference - heres what I get as output :
CREATE TABLE
INSERT 32429 1
INSERT 32430 1
INSERT 32431 1
BEGIN
DECLARE CURSORa
---1
(1 row)
a
---2
(1 row)
a
---3
(1 row)
a
---
(0 rows)
a
---3
(1 row)
a
---2
(1 row)
a
---1
(1 row)
TIA
--
Mike Aubury
Aubit Computing Ltd is registered in England and Wales, Number: 3112827
Registered Address : Clayton House,59 Piccadilly,Manchester,M1 2AQ
