SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function tuple (alias key) (children 1)
     ExpressionList (children 2)
      Identifier x
      Identifier y
    Function dictGetOrDefault (children 1)
     ExpressionList (children 4)
      Literal \'polygon_dictionary\'
      Literal \'name\'
      Identifier key
      Function intDiv (children 1)
       ExpressionList (children 2)
        Literal UInt64_1
        Identifier y
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier points
