| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | ian link <ian(at)ilink(dot)io> |
| Cc: | Craig Ringer <craig(at)2ndquadrant(dot)com>, Hitoshi Harada <umi(dot)tanuki(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Support for RANGE ... PRECEDING windows in OVER |
| Date: | 2013-07-01 04:56:18 |
| Message-ID: | 51D10BF2.6040701@agliodbs.com |
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| Lists: | pgsql-hackers |
On 06/30/2013 08:54 PM, ian link wrote:
> I found some time and I think I am up to speed now. I finally figured out
> how to add new operator strategies and made a little test operator for
> myself.
>
> It seems pretty clear that assuming '+' and '-' are addition and
> subtraction is a bad idea. I don't think it would be too tricky to add
> support for new operator strategies. Andrew Gierth suggested calling these
> new strategies "offset -" and "offset +", which I think describes it pretty
> well. I assigned the operator itself to be "@+" and "@-" but that can
> obviously be changed. If this sounds like a good path to you guys, I will
> go ahead and implement the operators for the appropriate types. Please let
> me know if I am misunderstanding something - I am still figuring stuff out
> :)
>
> Aside from the opclass stuff, there were some other important issues
> mentioned with the original RANGE support. I think I will address those
> after the opclass stuff is done.
Are these things you plan to get done this week, or for next CommitFest?
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
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