SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function arraySort (children 1)
     ExpressionList (children 1)
      Function groupUniqArray (children 1)
       ExpressionList (children 1)
        Identifier x
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function CAST (alias x) (children 1)
            ExpressionList (children 2)
             Function arrayJoin (children 1)
              ExpressionList (children 1)
               Literal Array_[UInt64_1, UInt64_2, UInt64_3, UInt64_2, UInt64_3, UInt64_3]
             Literal \'Enum(\\\'Hello\\\' = 1, \\\'World\\\' = 2, \\\'Упячка\\\' = 3)\'