Re: NULL safe equality operator

> test=# select null_safe_cmp (NULL,NULL);
> ERROR:  could not determine anyarray/anyelement type because input  has 
> type "unknown"
> test=# select null_safe_cmp (NULL::integer,NULL::integer);
> null_safe_cmp
> ---------------
>              1
> (1 row)
> 
> Same casting problem due to anyelement, of course.

Yes - I wonder what the trick to getting around that is?

Chris