I'm not sure how Temperature and Humidity are related as types beyond
"extends float". i.e. What tuple definition could alternatively have a
Temp or a Humidity value? (I do understand their physical relationship :) )
Gianvito Pio wrote:
> Hi all,
> I just want to ask you if it's possible to define sub types in
> PostgreSQL (Type inheritance). I found that table inheritance is
> possible...but I'd like to do it on types.
>
> Example:
> define a type Value and two subtypes Temperature and Humidity and then
> define a table that has an attribute of Value type (that can accept
> both specialized types).
>
> Thanks