SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function arrayMap (alias x) (children 1)
     ExpressionList (children 3)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 2)
          Identifier x
          Identifier y
        Function plus (children 1)
         ExpressionList (children 2)
          Identifier x
          Identifier y
      Literal Array_[UInt64_1, UInt64_2, UInt64_3]
      Literal Array_[UInt64_4, UInt64_5, UInt64_6]
    Function isConstant (children 1)
     ExpressionList (children 1)
      Identifier x
