42 return new Max(*
this);
TE_DEFINE_VISITABLE Max(Expression *arg)
Constructor.
A base class for unary functions.
Max statistical function.
UnaryFunction & operator=(const UnaryFunction &rhs)
Max statistical function.
This is an abstract class that models a query expression.
Max & operator=(const Max &rhs)
Expression * clone() const
It creates a new copy of this expression.