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