Re: Automatic row numbering / sequence in view ?
| От | Arnaud Lesauvage |
|---|---|
| Тема | Re: Automatic row numbering / sequence in view ? |
| Дата | |
| Msg-id | 452BB37B.6030503@freesurf.fr обсуждение исходный текст |
| Ответ на | Re: Automatic row numbering / sequence in view ? ("Merlin Moncure" <mmoncure@gmail.com>) |
| Список | pgsql-general |
Merlin Moncure a écrit :
> On 10/10/06, Arnaud Lesauvage <thewild@freesurf.fr> wrote:
>> Hi List !
>>
>> I need to add a column to a view, which would contain an automatically
>> generated sequence.
>> An automatic row numbering would do the trick (I only need unique
>> numbers, that's all), but I don't even know how to achieve this.
>> Does anybody have a solution for this problem ?
>
> sure a sequence works. try this:
>
> create sequence foo;
>
> create view foobar as select *, nextval('foo') from bar;
>
> If your query is complex, i would consider it to be good style to push
> the real view into a subquery, such as:
>
> select q.*, nextval('foo') from
> (
> [complex query here]
> ) q;
>
> merlin
How, great !
I did not know that way to use a sequence ! Still learning ! ;)
The query is quite complex indeed, so I will try with a subquery !
Thanks a lot Merlin !
--
Arnaud
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