From: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
---|---|
To: | Josh Berkus <josh(at)agliodbs(dot)com> |
Cc: | "David E(dot) Wheeler" <david(at)kineticode(dot)com>, lembark(at)wrkhors(dot)com, pgsql-hackers(at)postgresql(dot)org, pgsql-www(at)postgresql(dot)org |
Subject: | Re: [HACKERS] Mentors needed urgently for SoC & PostgreSQL Student Internships |
Date: | 2009-04-02 18:19:46 |
Message-ID: | 49D501C2.8060208@enterprisedb.com |
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Lists: | pgsql-hackers pgsql-www |
Josh Berkus wrote:
> On 4/2/09 8:48 AM, David E. Wheeler wrote:
>> On Apr 2, 2009, at 7:20 AM, Steven Lembark wrote:
>>
>>>>> Note that since the Internships are not required to be project code,
>>>>> we can also take student projects to contribute to our WWW
>>>>> infrastructure and other areas the project needs some work.
>>>
>>> Would introducing a Duration (i.e., time-series
>>> a'la Date, et al)) data type be considered useful?
>
> Jeff Davis has already done a lot of this work; it's on pgFOundry
> somewhere.
The data type itself is quite trivial. It's all the operators that are
more difficult to implement, and also immensely useful. That part is
still incomplete. I'd recommend a book called Temporal Data and the
Relational Model by C.J. Date, Hugh Darwen and Nikos Lorentzos for
anyone interested in this topic. That book gives a guideline on how the
data type and operators should behave.
I'd love to see that implemented. I volunteer to mentor if someone wants
to tackle it.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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