hive <=> operator

Human being learns all the time … I’ve just found out that there is a wonderfully simple way of writing equal conditions including NULL values in Hive: the <=> operator. I used to write something like this:

...
WHERE 
  column1 = column2 OR (column1 IN NULL AND column2 IS NULL) 

Now it boils down to:

WHERE
  column1 <=> column2

For reference: NULL = NULL is false by definition in SQL