Hi Alexander!
>How this function could handle this case?
>
>list1: (NULL)
>list2: whatever containing NULL
>
>The outer loop will just quit after iterating the only element of
>list1 without even iterating list2.
Thanks for the case!
Patches with the fix are attached to email.
--
With best regards,
Dmitry Koval
Postgres Professional: http://postgrespro.com