The DBMS is Postgres. Is it possible to use NULL in an IN clause? example:
WHERE id_field IN ('value1', 'value2', 'value3', NULL)
To these four values only, please. The aforementioned statement executes but fails to add the records with NULL id fields when I run it. I've also attempted to include an OR condition, however, doing so merely makes the query keep running indefinitely.
Can someone please help me with this?