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From: Heikki Linnakangas <[email protected]>
To: Josh Berkus <[email protected]>
Cc: David E. Wheeler <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Subject: Re: [HACKERS] Mentors needed urgently for SoC & PostgreSQL Student Internships
Date: Thu, 02 Apr 2009 21:19:46 +0300
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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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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