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 tupleElement (children 1)
         ExpressionList (children 2)
          Identifier x
          Literal UInt64_1
      Function array (children 1)
       ExpressionList (children 1)
        Function tuple (children 1)
         ExpressionList (children 1)
          Literal UInt64_1
