Re: Another question about Range types

Done. Bug #1011216

On Fri, Aug 3, 2012 at 1:11 PM, Francisco Figueiredo Jr.
<francisco(dot)figueiredo(dot)jr(at)gmail(dot)com> wrote:
>
> Regarding npgsql, range types have no direct mapping so they will be treated
> like strings. Sorry for that.
>
> I'll work to add support to it. Would you mind to fill a feature request
> about that on our feature requests project page? http://project.npgsql.org
>
> Thanks in advance.
>
> Em 03/08/2012 17:01, "Mike Christensen" <mike(at)kitchenpc(dot)com> escreveu:
>>
>> There's another ongoing thread about range types, which was great
>> because I wasn't familiar with the feature (guess it's new in 9.2?).
>>
>> I run a recipe website and was looking for *exactly* this sort of
>> feature a few weeks ago when I was adding in support for ranges of
>> ingredients (such as "1-2tsp salt"). In the end, I implemented it
>> using two columns (QtyHigh and QtyLow). In the salt example, QtyHigh
>> would be 2 and QtyLow would be 1. I also have some CHECK constraints
>> to make sure high is always higher, and they're not the same, and not
>> negative or anything.
>>
>> Now, for 99% of the ingredients, QtyHigh would have a value and QtyLow
>> would just be null. For example, "2tsp salt" would have a QtyHigh of
>> 2 and a QtyLow of null, which would indicate there is no range.
>>
>> I'm curious if I could combine these columns into one using a RANGE
>> type. Obviously, if the column only stored ranges, it would be easy.
>> However, can a range also be one-dimensional? Can I have a High value
>> and no low value? Or would the recommended design be to have high/low
>> be the same? Overall, would this scenario be an appropriate use case
>> for this RANGE type, since only some of the data are ranges?
>>
>> BONUS Question:
>>
>> How are RANGE types represented in Npgsql, or are they even supported yet?
>>
>> Mike
>>
>> --
>> Sent via pgsql-general mailing list (pgsql-general(at)postgresql(dot)org)
>> To make changes to your subscription:
>> http://www.postgresql.org/mailpref/pgsql-general