SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Function lambda (alias lambda) (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList (children 2)
        Identifier functor
        Identifier x
      Function functor (children 1)
       ExpressionList (children 1)
        Identifier x
    Function lambda (alias functor_1) (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList (children 1)
        Identifier x
      Function plus (children 1)
       ExpressionList (children 2)
        Identifier x
        Literal UInt64_1
    Function lambda (alias functor_2) (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList (children 1)
        Identifier x
      Function toString (children 1)
       ExpressionList (children 1)
        Identifier x
   ExpressionList (children 2)
    Function lambda (children 1)
     ExpressionList (children 2)
      Identifier functor_1
      Literal UInt64_1
    Function lambda (children 1)
     ExpressionList (children 2)
      Identifier functor_2
      Literal UInt64_1