cubicweb #6143903 Can't write != NULL [open]

If we want only specified value for an attribute, the two following RQL queries won't work:

Any A WHERE X attr A, X attr != NULL
Any A WHERE X attr A HAVING A != NULL

The only query to work is: Any A WHERE X attr A, NOT X attr NULL

priorityminor
typebug
done in<not specified>
closed by<not specified>