select 'true'
from dual
where (1) not in (2,null)
no data found
select 'true'
from dual
where (1) not in (null, 2)
no data found
select 'true'
from dual
where (1,2) not in ((2,null))
| 'TRUE' | true |
|---|
select 'true'
from dual
where (1,2) not in ((null,2))
no data found