2 meaningless values can't be compared against one another : NULL « Data Type « Oracle PL / SQL






  1. Oracle PL / SQL
  2. Data Type
  3. NULL

2 meaningless values can't be compared against one another

 
SQL> select 12 from dual where null = null;

no rows selected

SQL>
SQL>








Related examples in the same category

1.This in the only way to do it properly to get the desired results
2.using the nvl function