SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayMap (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function arrayJoin (children 1)
         ExpressionList (children 1)
          Literal Array_[UInt64_1, UInt64_2, UInt64_3]
      Literal Array_[UInt64_1, UInt64_2, UInt64_3]
