select string_value | |
from args | |
where string_value = NULL | |
UNION | |
select string_value | |
from args | |
where string_value != NULL | |
UNION | |
select string_value | |
from args | |
where string_value < NULL | |
UNION | |
select string_value | |
from args | |
where string_value <= NULL | |
UNION | |
select string_value | |
from args | |
where string_value > NULL | |
UNION | |
select string_value | |
from args | |
where string_value >= NULL | |
UNION | |
select string_value | |
from args | |
where string_value LIKE NULL | |
UNION | |
select string_value | |
from args | |
where string_value GLOB NULL |