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