Re: sql questions

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От
Thiemo Kellner
Тема
Re: sql questions
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Msg-id
20180720150753.817240u65vouisis@www.gelassene-pferde.biz
Ответ на
sql questions (hamann.w@t-online.de)
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sql questions hamann.w@t-online.de
Re: sql questions Laurenz Albe <laurenz.albe@cybertec.at>
Re: sql questions Thiemo Kellner <thiemo@gelassene-pferde.biz>
Re: sql questions hamann.w@t-online.de
Re: sql questions Brian Dunavant <brian@omniti.com>
Zitat von hamann.w@t-online.de:

> a) I am running some select query
> select ... order by ....
> Now, I would like to preserver the ordering through further  
> processing by adding a sequence number
> Of course I can do:
> create temp sequence mseq;
> select xx.*, nextval('mseq') as ord from (select ... order by ....) xx;
> drop sequence mseq;
> Is there a simpler way (avoiding the create/drop parts)

Can't you just do the ordering at the end of the processing? Maybe you  
need to drag along the order by columns and just dump them at the very  
end if applicable.

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