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