Postgres NOT IN (null) gives no result

Question

I\'m using Postgres with this query

select 
*
from Entity this_ 
where 
(this_.ID not in (null))

Why does this give me no results? I would expe

Answer 1

I have had similar in problem and eventually came up with the following solution;

select * from public."Employee_11" where (COALESCE("Name",'@'),"Surname") 
    in (
        ('@','dummy')
    )

It does return the records which Name column has null values. You can also use this for not in clause which will return not null records of Name;

  select * from public."Employee_11" where (COALESCE("Name",'@'),"Surname") 
        not in (
            ('@','dummy')
        )