changed behaviour of textptr sp122, sp134/sp135

Hello,

I have noticed that the behaviour of textptr has been changed between ASE versions sp122 and sp135.

If you have a table

create table tt(i int, j text null)

and insert a null value for t

insert tt(1, null)

and then execute

select textptr(j) from tt

then you get the following result in sp122 :

----------------------------------
NULL                              

and the following result in sp134/135 :

----------------------------------

0x51030000011000000000000000000000

What's the reason behind this change ? And how do I check if a page has been allocated to a text column or not ?

Thanks,

Luc.