SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayMax (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function toFixedString (children 1)
         ExpressionList (children 2)
          Literal \'.\'
          Literal UInt64_1
      Function array (children 1)
       ExpressionList
