Re: Test for array slice?

On Jun 3, 2005, at 12:32 PM, Joe Conway wrote:

> Peter Fein wrote:
>> I want to do something like this (pardon my pseudocode):
>> A=ARRAY[4, 5, 6, 7, 8]
>> B=ARRAY[5, 6]
>> is_sliceof(A, B), i.e., there exists a slice of A that equals B.  My
>> best thought ATM is to convert both to strings and use pattern
>> matching
>> - any better ideas?
>
> I can't think of a really good way to do that directly in Postgres,
> but I'd bet (still not sure though) there is a way in R.
>   http://www.r-project.org/index.html
> If so, you could use PL/R:
>   http://www.joeconway.com/plr/

This is probably also easy in perl and python as well.

Sean