SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function lambda (alias lambda) (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList (children 1)
        Identifier x
      Function plus (children 1)
       ExpressionList (children 2)
        Function lambda (children 1)
         ExpressionList (children 1)
          Literal UInt64_1
        Identifier x
   ExpressionList (children 1)
    Function lambda (children 1)
     ExpressionList (children 1)
      Literal UInt64_1048576