SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function max (children 1)
     ExpressionList (children 1)
      Function arrayJoin (children 1)
       ExpressionList (children 1)
        Identifier arr
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 1)
           Function arrayEnumerateUniq (alias arr) (children 1)
            ExpressionList (children 2)
             Function groupArray (alias nums) (children 1)
              ExpressionList (children 1)
               Function intDiv (children 1)
                ExpressionList (children 2)
                 Identifier number
                 Literal UInt64_54321
             Function groupArray (children 1)
              ExpressionList (children 1)
               Function toString (children 1)
                ExpressionList (children 1)
                 Function intDiv (children 1)
                  ExpressionList (children 2)
                   Identifier number
                   Literal UInt64_98765
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 1)
                SelectQuery (children 3)
                 ExpressionList (children 1)
                  Identifier number
                 TablesInSelectQuery (children 1)
                  TablesInSelectQueryElement (children 1)
                   TableExpression (children 1)
                    TableIdentifier system.numbers
                 Literal UInt64_1000000
          ExpressionList (children 1)
           Function modulo (children 1)
            ExpressionList (children 2)
             Function intHash32 (children 1)
              ExpressionList (children 1)
               Identifier number
             Literal UInt64_100000