Ron Johnson wrote:
> No, but slightly ambiguous, at least for my old brain.
I will try to by more unequivocal this time :)
Shridhar Daithankar wrote:
> select oid,name from a;
I know it, but i have to have not oid's but row numbers :) such like :
table "test"
offset | value
-----------+------------
1 | AC43
2 | AC4X
3 | AX43
4 | ACX3
....
n | XC4A
the best will be without using sequence :)
Shridhar Daithankar wrote:
> I didn't get that.. could you please elaborate?
Franco Bruno Borghesi wrote:
> And about the rows before and after that you ask, I don't understand...
based on what you mean
> *before* and *after*? you don't have an order by clause.
> And what do you mean with "I know that in result is record with e.g.
uid='AC13A1'"?
> You know this uid *before* sending the query? is it part of your <where
statement>? can you use
> this value as a hard coded condition for a subquery?
Ok, so its goes something like that:
lets say i have select query: select a,b,uid from foo where c='bar' order by a;
with results like that:
a | b | uid
----+----+------
2 |x | AC01
2 |w | AC43
4 |d | AC88
4 |a | AC13
...
7 |c | AC22
and lets say I selected this before and I know that there is uid='AC88';
and in another connection (in lets say next requested www php script )
without selecting all
this data or even full list of only uid`s and making sequence scan row by
row I wont to get
something like that from select I have write above:
a | b | uid
----+----+------
2 |w | AC43
4 |d | AC88
4 |a | AC13
(3 rows)
if there is row before and row next of uid='AC88' or
a | b | uid
----+----+------
2 |w | AC43
4 |d | AC88
(2 rows)
if uid='AC88' is last one row
or
a | b | uid
----+----+------
4 |d | AC88
4 |a | AC13
(2 rows)
if uid='AC88' is first row
I hope its more understandable than before :)
regards
Robert 'BoBsoN' Partyka
