SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier v1
    Identifier v2
    Function greater (children 1)
     ExpressionList (children 2)
      Identifier v1
      Identifier v2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier v1
    OrderByElement (children 1)
     Identifier v2
