InsertQuery   (children 2)
 Identifier null_00549
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 3)
     Identifier k
     Identifier a
     Identifier b
    TablesInSelectQuery (children 2)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Subquery (alias js1) (children 1)
        SelectWithUnionQuery (children 1)
         ExpressionList (children 1)
          SelectQuery (children 3)
           ExpressionList (children 2)
            Identifier number (alias k)
            Function toString (alias a) (children 1)
             ExpressionList (children 1)
              Identifier number
           TablesInSelectQuery (children 1)
            TablesInSelectQueryElement (children 1)
             TableExpression (children 1)
              TableIdentifier system.numbers
           Literal UInt64_2
     TablesInSelectQueryElement (children 2)
      TableExpression (children 1)
       Subquery (alias js2) (children 1)
        SelectWithUnionQuery (children 1)
         ExpressionList (children 1)
          SelectQuery (children 4)
           ExpressionList (children 2)
            Identifier number (alias k)
            Function toString (alias b) (children 1)
             ExpressionList (children 1)
              Identifier number
           TablesInSelectQuery (children 1)
            TablesInSelectQueryElement (children 1)
             TableExpression (children 1)
              TableIdentifier system.numbers
           Literal UInt64_1
           Literal UInt64_2
      TableJoin (children 1)
       ExpressionList (children 1)
        Identifier k
    ExpressionList (children 1)
     OrderByElement (children 1)
      Identifier k