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Re: FW: SQL rolling window without aggregation

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On Monday, December 8, 2014, Huang, Suya <Suya.Huang@xxxxxxxxxxxxxxx> wrote:
-----Original Message-----
From: pgsql-general-owner@xxxxxxxxxxxxxx [mailto:pgsql-general-owner@xxxxxxxxxxxxxx] On Behalf Of David G Johnston
Sent: Monday, December 08, 2014 1:18 PM
To: pgsql-general@xxxxxxxxxxxxxx
Subject: Re: FW: SQL rolling window without aggregation

Huang, Suya wrote
> It seems like it's not been sent to the SQL group, so I'm trying with
> this group.

Asked and answered...online archives follow

http://postgresql.nabble.com/rolling-window-without-aggregation-td5829344.html#a5829345
http://www.postgresql.org/message-id/1417764928965-5829345.post@xxxxxxxxxxxxx

David J.



============================================================================================================
Thanks Dave. I was trying to avoid UNION...



Instead of avoiding things get something that works then ask whether there is a better way to do things.  At least that way you can provide a working query that others can look at and know exactly what you need.

In this case you have a single table and want the result to have more rows than the input - I'm not sure how anything but a union will accomplish that goal.  You have to generate those rows somehow.  There may be better ways of looking at your problem but you only gave us a toy model to play with.

David J.

 

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