Row number SQL without order by column

 SELECT

    ROW_NUMBER() OVER(ORDER BY (Select 0)) AS Row_Num,

    Employee_Name

    FROM MTB_Table_A







SELECT actid, tranid, val,
 ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) AS rownum
FROM dbo.Transactions;

reference:- https://www.mytecbits.com/microsoft/sql-server/row-number-without-using-order-by

https://stackoverflow.com/questions/44105691/row-number-without-order-by