IN Operator SQL

Question

I have a table called NUMS with a single column n.
And I fill values 1,2,3,4,5,null in it.

Now a query

SELECT n FROM Nums 
 WHERE n IN (1, 2,         


        

Answer 1

null is not returning, although included in IN operator

Because of the n = NULL evaluation; NULL can't equal NULL. It would need to be handled as n IS NULL (or similar appropriate syntax) to return the NULL row/record.