[MonetDB-users] Is there IF(), IFNULL() in SELECT?

Sorry if it was asked before, I can't find a comprehensive list of functions available. Is it possible to somehow implement something like this: SELECT IF(col1>0,'Negative','Positive') as Sign, IFNULL(col2,'Empty',col2) as col2 FROM table; // it's just an example, not the exact query :)

Thanx!