Forgot to include the group.. On Wed, Feb 24, 2010 at 5:38 PM, Gokulakannan Somasundaram < gokul...@gmail.com> wrote:
> I am not familiar with this term "broken data types", and I just looked for >> it in the source code and couldn't find it. >> >> What exactly are you referring to? >> >> cheers >> >> andrew >> > > Sorry i missed this. Actually if we create a function A which uses > functions like time(), date() and random(), then this function A won't give > the same output, even if we give the same input. So if a person has created > a data type, which uses these functions, then it can't be made as a primary > key in an Index organized table, because i need to reach the same tuple by > applying the function on the supplied values. But since the function is > mutable, we can't reach the same tuple. > > If we decide to support only datatypes containing immutable functions, then > there might be people who have created these kind of functions and marked it > as immutable( while they are mutable functions). So those functions will > result in index-corruption / failed operation. Only if we resolve this issue > we can have data structures like IOT. > > Hope, i was clear. > > Thanks, > Gokul. > >
