No, the result will be ordered by the window functions order clause so no
additional ordering is nessesary.
You can try this by changing it to OVER(ORDER BY product_name)
KR
Mikael
________________________________
Från: Durumdara <durumd...@gmail.com>
Skickat: den 10 mars 2023 08:41:06
Till: Gustavsson Mikael
Kopia: Postgres General
Ämne: Re: Onfly, function generated ID for Select Query
Dear Mikael!
Wooooow... that is it!
Thank you!
SELECT product_id, product_name, group_id, ROW_NUMBER () OVER (ORDER BY
product_id) FROM products;
Does this mean that I have to duplicate the order by clause?
SELECT product_id, product_name, group_id, ROW_NUMBER ()
OVER (ORDER BY product_id, product_name, group_id)
FROM products
ORDER BY product_id, product_name, group_id
To get the same sequence in the ROW_ID-s, and the Query rows?
BR
dd
Gustavsson Mikael <mikael.gustavs...@smhi.se<mailto:mikael.gustavs...@smhi.se>>
ezt írta (időpont: 2023. márc. 10., P, 8:33):
Hi,
Is it something like row_number() you want?
https://www.postgresql.org/docs/current/functions-window.html
KR
Mikael
________________________________
Från: Durumdara <durumd...@gmail.com<mailto:durumd...@gmail.com>>
Skickat: den 10 mars 2023 8:12
Till: Postgres General
Ämne: Onfly, function generated ID for Select Query
Dear Members!
I'm searching for a simple solution, like this:
select GetIDForThisSelect(1, 1) as UID, * from anytablehasdoublestringkey
join othertablehasnotuniqueintegerkey ...
where ....
Ok, I can make a sequence, but I don't want to use persistent data.
It is enough to get 1...N as UID for this select.
Like generate_series, but that is generating rows.
Maybe you have some trick to do this.
Thank you for any assistance!
Best regards
dd
