SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function min (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier ts
        Function toUInt32 (children 1)
         ExpressionList (children 1)
          Function toDateTime (children 1)
           ExpressionList (children 1)
            Function toString (children 1)
             ExpressionList (children 1)
              Identifier ts
   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 plus (alias ts) (children 1)
            ExpressionList (children 2)
             Literal UInt64_1000000000
             Function multiply (children 1)
              ExpressionList (children 2)
               Literal UInt64_1234
               Identifier number
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_1000000