SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function arraySort (children 1)
     ExpressionList (children 1)
      Function groupArray (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)\'
