NULL is a special Oracle value that may be applied to all data types.  It means that the value is unknown.

Therefore:
* Any IF condition evaluation with NULL will always return False
* a NULL value must be tested for explicity, in SQL, as thus:  IS NULL or IS NOT NULL
* Oracle provides for functions to handle Null conditions like [NVL]


----
![Notes|Edit:Internal.NULL] 	
[{InsertPage page='Internal.NULL' default='Click to create a new notes page'}]